Author Topic: 1976 CB750F Restoration  (Read 19264 times)

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Offline Restoration Fan

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Re: 1976 CB750F Restoration
« Reply #50 on: December 23, 2015, 06:22:28 PM »
Dang, John....you don't play around do you?  This is one of the quickest paces I've seen.  And your work is fantastic!

Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #51 on: December 27, 2015, 01:36:58 PM »
Just after Christmas and the engine is just about prepped. The head and cylinder will be dropped off at the machine shop tomorrow. I will be away for a week so those parts should be ready when I get back. The cases and other parts got painted, the cylinder got bead blasted, the head will be done by the machine shop. The parts that needed to be polished got polished and the "Honda" logo surround painted in VHT Gloss Black on the alternator cover. Nothing more has been assembled but this is another great milestone for a resto, lots a prep in these 3 pics. I am still waiting on some seals to come in to assemble the engine and they should be here by time I get back. Happy New Year Everyone.










I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #52 on: January 08, 2016, 02:37:39 PM »
While the Wife is away we shall bake away. This double oven thing was a hard sell to me, I mean, who needs 2 ovens? Well, I now see their value. These cases just barely fit in there, ain't no CBX cases getting done in a regular house oven, I can see that. The head and cylinder are still at the machine shop and will also need to be baked when they get back. Tomorrow though, the bottom end assembly can begin.



For any of you Bakers, or Future Bakers out there, I do have one tip learned the hard way. Don't use the Pot Holder/Hanger Dealios that your Wife's Grammy made for rags.  :o



I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline SOHC4 Cafe Racer Fan

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Re: 1976 CB750F Restoration
« Reply #53 on: January 08, 2016, 03:35:50 PM »
Do NOT EVER show these pictures to your wifey!!  :o :o
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #54 on: January 09, 2016, 03:56:58 PM »
Got the cases just about ready to assemble tomorrow, also got some general maintenance done around the shop, sweeping, cleaning, stuff like that. The top end isn't ready yet so I will probably move back to the chassis barring some unforeseen problem with the cases.



This K/Start Return Spring proved worthy of it's name. Many are a biatch but these have a special place in Hell. Both Hondaman's book and the generic manual give no special tip on how to reinstall this assembly. I finally got it by using a screwdriver to pull the spring up while getting the pawl below it's stop and then using my third arm to pull the spring to it's locator. I really think that kicking the bench twice, and yelling at the top of my lungs, "Get in There You Mutha....." is what eventually pulled it together. This is one of those jobs that definitely has a, " Oh My God it Just Popped in, Nobody Move........." moment.


« Last Edit: January 09, 2016, 04:09:54 PM by przjohn »
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #55 on: January 09, 2016, 04:00:40 PM »
Do NOT EVER show these pictures to your wifey!!  :o :o

No kidding, that would be worse than having her catch me checking out a non family site.  ;D ;D ;D
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #56 on: January 11, 2016, 07:34:46 AM »
Got the cases together today, they are sealed with Hondabond, twice. As good luck would have it, after the cases were sealed and set together one of these little Bastids fell off one of the 8mm lower crank bolts and fell through the open hole where the oil pan is, WTF. Though the cases had not been bolted together the Hondabond had started to set and the whole shebang had to come apart and get cleaned up again.



A pic of the bottom, the oil pan is on in this shot, I will cover that opening with a rag next time. The bike gets a new Neutral Switch and all the bolts have been replated. I know you will never see these bolts on the bottom but it makes for a nice clean reassembly.



Left side is complete. Being a 2 stroke guy you would never see a Smoker sitting on the bench with covers on and no top end, that's what a frame is for. Still thinking about putting it back in the frame. Luckily I know a few guys who will do almost anything for beer to give me a hand.



I've had this kit for quite awhile now and it is great for bikes like this that have lots of O Rings that don't come with a gasket set.

And, by the way, who is the guy that figures what goes into a gasket set and what doesn't?
Ya know, if somebody wanted to make a few bucks they would find out what all the O Rings and seals are that don't come with the so called, "Kits" and sell them, I know I would buy them.



« Last Edit: January 11, 2016, 07:44:36 AM by przjohn »
I like poetry, long walks on the beach, and poking at dead things with a stick.

Online Jerry Rxman Griffin aka MuthaF'er

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Re: 1976 CB750F Restoration
« Reply #57 on: January 11, 2016, 09:48:45 AM »
Great job on those side covers.
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #58 on: January 16, 2016, 04:24:16 PM »
While waiting for top end parts for the motor the chassis got some attention. The front end is where we went today. This bike has had the headlight assembly off before, can't fool me I went to College for 2 weeks.

This is a pic of the headlight bracket and you can see at the bottom 2 different types of rubber mounts. These mounts just slide into holes in the lower triple clamp. My best bet is the OEM one is the one with a flange and the one that looks like a crutch bottom came from the arrow tip bought at some Arizona Tourist Trap, kid's love 'em but they ain't that good for headlights . The assembly was loose and needed some tightening up.



I found this expanding plug at the hardware store in the "Nut, Bolt, Washer, and Other Stuff" aisle. Took out the guts, burned it through with a hot 5/16 drill bit and it worked like a charm. The headlight frame is just as solid as a rubber mounted frame can be.




This is why you don't throw good stuff away. When I finish a bike the remains get archived upstairs. One of the headlight reflector mounts on this bike had the reflector screw broken off inside. I could have drilled it out and tapped it but I went through the stuff in the 400F Archive, (Just a Cardboard Box Marked 400F Really but Archived Sounds Professional) and found one.




Lots of stuff got plated today too. These are the carb to engine side clamps. I have carb to air box clamps from another resto that will be being used, big cost savings there. The other pic is of all the engine mount bolts. This should be all the plating that needs to be done, yeah, right. Whenever I think the plating is done some oddball thing-a-ma-bob comes up and the whole set up has to come out again. When I was out in the field doing HVAC Work we had a saying, "Never put the torch away" If you put the torch away, sure as hec you will have a leak. I do the same thing with the plating, the set up stays assembled for the whole resto, just needs to be plugged in.











One of the non stock changes made to this bike was the bars. Back in the glory days of these bikes one of the most popular mods were Low Bars. I think they will look, and work well. These bars have a few hours in them as they have all the wiring running through them. The bars I purchased were not pre machined. I ain't no machinist but got a pretty good eye and a decent Black Magic Marker. That, with a Dremel tool and a Step Drill got it done.






The low bars are going to require a few mods. I took a chance and ordered a 400F upper hose from David Silver that fit perfect. Here is a pic of the reproduction master and the DSS upper hose compared to the stock Honda hose. Oh, and these reproduction Masters are great. I have used them on both Kawasaki and Honda restos. For the money it is so much easier and cleaner than a rebuild kit with paint. I already have some ideas for the cables when the time comes for these bars, we'll make 'em work.











I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline Stev-o

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Re: 1976 CB750F Restoration
« Reply #59 on: January 16, 2016, 05:44:59 PM »
Where did you get that MC?

DSS makes a nice one too, about $45.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #60 on: January 16, 2016, 06:05:41 PM »
That's where I got it. It is the same one that is sold for the Kaws too.
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Offline NobleHops

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Re: 1976 CB750F Restoration
« Reply #61 on: January 17, 2016, 07:24:25 AM »
This is the best resto thread I've seen in a long time John, way to represent.

N.
Nils Menten * Tucson, Arizona, USA

I have a motorcycle problem.

My build thread: NobleHops makes a 400F pretty for his wife: http://forums.sohc4.net/index.php?topic=131210.0

Offline SOHC4 Cafe Racer Fan

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Re: 1976 CB750F Restoration
« Reply #62 on: January 17, 2016, 08:48:38 AM »
I like the profile of the low bars.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #63 on: January 17, 2016, 03:37:28 PM »
Time for one step forward and two steps back. Or, as I like to call it, I am an idiot.

The cases sat assembled since last weekend. Like a proud parent I would show them to friends who stopped by until one made a comment, " Is that seal suppose to stick out like that?" The Countershaft seal was sticking out on about the lower third portion outside the flush case about 1/8". I am sure that measurement has a metric counterpart but I was to dumbfounded and pizzed to figure it out. Well, I thought, "Maybe just tap it back in" and that's what I did and went onto other stuff. Went to work on the carbs for awhile and this uneasy feeling kept with me. It was like the feeling you have a day or two later when you're in your early twenties and forget to use protection. Here is the seal after I tapped it back in.



Here is a pic after removed and I think you can see how it is bent slightly. This seal has almost no meat to grab on the countershaft as it is and I am glad I retrieved it.





So now we are back to this. I will order a new seal and some gaskets that headed South. Hopefully this can come together for next weekend.












« Last Edit: January 17, 2016, 04:03:45 PM by przjohn »
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #64 on: January 17, 2016, 04:00:11 PM »
Anyway, got the carbs all apart and they will be heading out to Nils and get Vapor Blasted. Never did this before but am going to try the look on this bike. A before pic,




Got to work on the meters, before.






I use to use this paint can tool for opening meters and started doing the same thing with the tach on this bike. And, then it hit me, 750 Faces gives you NEW rings. You don't have to re use the old ones. Well, once that thought was processed these rings were like spokes with the wire cutter. Clipped them right off.



And the after pics. The meter cases are still drying so they are not completely assembled, but this 750Faces kit is Da Bomb. They give you the whole plate, no wet sanding your plate, chuck that biatch. They give you new glass too which makes a big difference. Top notch product IMO compared to just getting some decals. I use Fluorescent Spray Paint sprayed into a cup and an Artiste's Brush for the needle tip. I use to have all these hobby paints, but they never last. Spray paint seems to last forever, though you may have more than you will ever use.











I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline madmtnmotors

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Re: 1976 CB750F Restoration
« Reply #65 on: January 17, 2016, 04:42:54 PM »
Time for one step forward and two steps back. Or, as I like to call it, I am an idiot.


So now we are back to this. I will order a new seal and some gaskets that headed South. Hopefully this can come together for next weekend.




 ???  ???  ???

Ummmm.... I have installed half a dozen or so output shaft seals...

without splitting the cases...

without leaks...
« Last Edit: January 17, 2016, 07:22:15 PM by madmtnmotors »
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #66 on: January 17, 2016, 06:32:54 PM »
I must be Googling it wrong because I  only found a few hits on this site about not splitting the cases and nothing that gave me a warm fuzzy about it. All in all I feel better about resplitting at the point the project was at, it was only a few hours added and gave me piece of mind.
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline seanbarney41

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Re: 1976 CB750F Restoration
« Reply #67 on: January 17, 2016, 06:41:46 PM »
I have changed that seal with cases together, motor in the bike, and all...just pretend you didn't read that, and be proud that you did things correct. ;)
If it works good, it looks good...

Offline madmtnmotors

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Re: 1976 CB750F Restoration
« Reply #68 on: January 17, 2016, 07:23:41 PM »
Definitely better than having to remove the engine from the bike and then opening it back up!
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #69 on: January 18, 2016, 10:10:28 AM »
Definitely better than having to remove the engine from the bike and then opening it back up!

Oh, if the motor was in the bike I would have definitely tried pulling it out and changing it before going through all the work of getting it out of the frame. That was my dilemma. I figured better to take a few hours now and be sure.
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #70 on: January 23, 2016, 04:13:42 PM »
Had a little bit of a Now WTF did I do? moment this week.

I had thought the gauges were good to go once the cases dried and were a non issue, well not so. A few days after the pics of the meters were posted I found this,





They were fine when I left them. I contacted Marcel at CB750faces.com. He had never seen this happen before but we both think I must have over torqued the faces, and here is why. I used my new Vessel JIS screwdriver that looks like a monster alongside of the screwdriver I normally use for fine stuff like this.




The Vessel tip fit perfect and I got a good grip on those screws, too good a grip I figure. But, like any good Politician or Weatherman I have an excuse;

 I bought a 1972 Kawasaki H2 and the PO had done the gauges himself. The bike had about 150 miles before the 2 screws in both meters started to back out and the meters were farked. That was the bike I learned how to disassemble meters, try to fix them without asking questions, and then pay BOO COO Bucks for NOS Clocks. So, I figured now, tighten the Bejsus out of them and Loctite the screws. This has worked well for me when I used the Craftsman Driver, but The Vessel, it could clamp a Polka Dot into a Fly's Azz.

CB750faces.com Owner Marcel, being the excellent guy he is, offered to send me new faces no charge or would rebuild my clocks, and do it minus what I and already spent with him for the parts. I told him I would take the faces and that if I screwed it up again I would pay him in full to restore the meters. This is the kind of guy you want to do business with, Thank You Marcel.
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #71 on: January 23, 2016, 04:15:42 PM »
Other things happening too. The Head and Cylinders are back so they got painted. I should say they got Taped and then say they got painted cause these guys take a bit of taping and prep before paint. The plan is to bake them tomorrow morning 'cause the Wife is away till Tuesday.



Oh, and the Countershaft Seal has been changed. I figure, if you ain't splittin cases twice or thrice you ain't bein thorough.




They say a big storm comin tonight? We'll see how much can get done tomorrow.
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline madmtnmotors

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Re: 1976 CB750F Restoration
« Reply #72 on: January 23, 2016, 04:23:48 PM »

Oh, and the Countershaft Seal has been changed. I figure, if you ain't splittin cases twice or thrice you ain't bein thorough.




They say a big storm comin tonight? We'll see how much can get done tomorrow.


I hope you mean that the "countershaft seal has been changed" from what is shown in the picture? At first glance that seal appears to be inside out...  :o
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!

Offline przjohn

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Re: 1976 CB750F Restoration
« Reply #73 on: January 23, 2016, 05:05:53 PM »

Oh, and the Countershaft Seal has been changed. I figure, if you ain't splittin cases twice or thrice you ain't bein thorough.




They say a big storm comin tonight? We'll see how much can get done tomorrow.



I hope you mean that the "countershaft seal has been changed" from what is shown in the picture? At first glance that seal appears to be inside out...  :o

That is a new seal. It is on correctly too. Rule of thumb when it comes to seals is that the spring side is always toward the sealing surface. This seal has a metal backing but is still the same dimensions as stock. Metal backing, Is it better? I don't know.
I like poetry, long walks on the beach, and poking at dead things with a stick.

Offline madmtnmotors

  • When did I get to be a
  • Really Old Timer ...
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  • Posts: 6,112
  • Sunny Central Florida
Re: 1976 CB750F Restoration
« Reply #74 on: January 23, 2016, 05:11:38 PM »
That is a new seal. It is on correctly too. Rule of thumb when it comes to seals is that the spring side is always toward the sealing surface. This seal has a metal backing but is still the same dimensions as stock. Metal backing, Is it better? I don't know.

Whew! I couldn't remember if some of the earlier models had a seal with the metal plate on the outside. The only later model seals I've ever seen always had the rubber surface on the outside, with the spring on the inside.

Carry on!  8)
TAMTF...


Wilbur



Projects:
"Evolution": http://forums.sohc4.net/index.php?topic=100352.0
"P.O. Debacle": http://forums.sohc4.net/index.php/topic,126692.msg1441661.html#msg1441661
F2/F3 O-rings: http://forums.sohc4.net/index.php?topic=113672.msg1300721#msg1300721
Cam Tower Studs: https://www.mcmaster.com/#93210a017/=t19sgp
Clean up that nasty harness: http://forums.sohc4.net/index.php?topic=137351.msg1549191#msg1549191
http://forums.sohc4.net/index.php/topic,148188.msg1688494.html#msg1688494
http://forums.sohc4.net/index.php/topic,139544.msg1579364.html#msg1579364
                                          
Charging system diagnosis: http://forums.sohc4.net/index.php?topic=1012.msg8345#msg8345
Get the manuals: http://manuals.sohc4.net/cb750k/
The Dragon: http://forums.sohc4.net/index.php?topic=45183.msg1571675#msg1571675
Headlight Switch: http://forums.sohc4.net/index.php?topic=113986.msg1283236#msg1283236
Branden's leak free top end thread: http://forums.sohc4.net/index.php?topic=107040.0
Engine Lifting Made Easy: http://forums.sohc4.net/index.php/topic,58210.msg1684742.html#msg1684742
                                      http://forums.sohc4.net/index.php/topic,100352.msg1675840.html#msg1675840
Static and Dynamic Timing: http://www.hondachopper.com/garage/carb_info/timing/timing1.html
Airbox Gasket Replacement: http://forums.sohc4.net/index.php/topic,114485.msg1290000.html#msg1290000
"Café" : http://forums.sohc4.net/index.php/topic,84697.msg953814.html#msg953814
PD Carb Choke Linkage: http://forums.sohc4.net/index.php/topic,100352.msg1669248.html#msg1669248
                                    http://forums.sohc4.net/index.php/topic,110931.msg1248354.html#msg1248354
                                    http://forums.sohc4.net/index.php/topic,48858.msg515204.html#msg515204
Follow up on your damn posts: http://forums.sohc4.net/index.php/topic,144305.msg1791605.html#msg1791605
Taiwanese Cam Chain Tensioners:  http://forums.sohc4.net/index.php/topic,155043.msg1774841.html#msg1774841
Gumtwo Seat Cover: http://forums.sohc4.net/index.php/topic,164440.msg1897366.html#msg1897366
Primary Drive: http://forums.sohc4.net/index.php/topic,166063.msg1919278.html#msg1919278
Tank Latch: http://forums.sohc4.net/index.php/topic,165975.msg1919495.html#msg1919495
Shorten your forks: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-shorten-forks-td4042465.html DO NOT CUT THE SPRINGS!
Clutch How To: http://vintage-and-classic-honda-s.456789.n3.nabble.com/How-to-change-and-adjust-a-clutch-SOHC-td4040391.html
Late model K7/K8/F2/F3 front sprocket cover removal: http://forums.sohc4.net/index.php/topic,178428.msg2072279.html#msg2072279
630 to 530 conversion: http://forums.sohc4.net/index.php/topic,180710.msg2094423.html#msg2094423

Sent from my Tandy TRS-80!