Author Topic: K1 Hot Rod the Rat Race, new/old stuff.  (Read 26930 times)

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Offline Don R

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Re: K1 Hot Rod back together. The Rat Race runs! Again!
« Reply #225 on: April 16, 2023, 09:14:29 AM »
  The clutch seemed to be draggy, it goes into gear OK but under power it's a little crunchy on the shifts. Clutchless shifting seems much smoother so I'm guessing it's the plates dragging. I can't work in the shop for a while due to a no lifting rule my surgeon gave me. I think I have a clutch pack with stock plates and the GL double disc.  when I can I plan to put that one in.
No matter how many times you paint over a shadow, it's still there.
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 You don't need a weatherman to know which way the wind blows.

Offline grcamna2

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Re: K1 Hot Rod back together. The Rat Race runs! Again!
« Reply #226 on: April 16, 2023, 10:13:37 AM »
You need your R&R Don  ;) and walking(when you're up for that)helps to circulate the blood to heal you faster.
« Last Edit: April 16, 2023, 10:15:26 AM by grcamna2 »
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Don R

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Re: K1 Hot Rod back together. The Rat Race runs! Again!
« Reply #227 on: April 16, 2023, 03:17:29 PM »
 I walked just now, I caught a face full of sleet coming back but did it anyway.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline HondaMan

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Re: K1 Hot Rod back together. The Rat Race runs! Again!
« Reply #228 on: April 16, 2023, 06:20:33 PM »
I walked just now, I caught a face full of sleet coming back but did it anyway.
We had that yesterday. Today is fine! :)
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

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Offline Don R

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Re: K1 Hot Rod back together. The Rat Race runs! Again!
« Reply #229 on: April 24, 2023, 10:32:57 PM »
 The doc OK'd me to mow. Next Thursday I may be done with him. I'm hoping to swap out the clutch during my down time but I'll have to work off the floor. I'm not risking trying to get it on the lift. Maybe I can get a son in law to stop here.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline PeWe

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #230 on: April 25, 2023, 03:34:04 AM »
Lift is not needed for home use. I have not, take too much space.
I have 2 foldable plastic stools.
Ca 450 vs 220 mm high.
Parts and tools never placed on the floor, plastic things for boots.
No dirt nor sand to stick on parts or tools. Old oven trays work fine too. Deeper model for oil.
« Last Edit: April 25, 2023, 08:04:53 AM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline grcamna2

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Re: K1 Hot Rod back together. The Rat Race runs! Again!
« Reply #231 on: April 25, 2023, 07:09:51 AM »
The doc OK'd me to mow. Next Thursday I may be done with him. I'm hoping to swap out the clutch during my down time but I'll have to work off the floor. I'm not risking trying to get it on the lift. Maybe I can get a son in law to stop here.

I'm in a 2nd story apartment;I have to work out on the pavement of my parking space in the dusty wind.
I miss my shop And the lift. Don,I hope you have more than one lift  :)
You have a nice shop Don;I enjoyed seeing it and your bikes back in 2018'.  ;)
« Last Edit: April 28, 2023, 08:38:32 AM by grcamna2 »
75' CB400F/'bunch o' parts' & 81' CB125S modded to a 'CB200S'
  I love the small ones too !
Do your BEST...nobody can take that away from you.

Offline Don R

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #232 on: April 25, 2023, 07:23:24 AM »
 Thanks guys, I'm just thinking out loud about how to best accomplish something with current limitations. It's been two weeks already and I want to move forward but can't lift anything heavier than my coffee cup. That rules out my battery impact but I need to be active also. 
 My wife worked at a gas station and broke down split rims when she was in high school so I'm betting she'll give me a hand.










No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline PeWe

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #233 on: April 25, 2023, 08:04:28 AM »
Forgot to mention that I often sit when working on the bike. Plastic stools for those lower jobs.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Don R

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #234 on: April 27, 2023, 12:59:57 PM »
  My wife got me a Vyper stool for the shop. I'll have to try to find a way to use it, I'm usually an on the floor or feet kind of worker.

https://www.vyperindustrial.com/
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline newday777

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #235 on: April 27, 2023, 02:05:59 PM »
That seat looks pretty comfy with the backrest Don
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Don R

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #236 on: April 28, 2023, 08:34:20 AM »
 It is, I've considered raising it a bit but so far, it's a challenge getting used to working while seated.

 After some thought during my surgery induced down time, I concluded that I often jump to conclusions based on a bit of information that I know and a few things I assume. When I assumed the motor was tight/stuck, it had a dead battery and the struggle kicking it is normal high compression kick starting and my lack of experience doing it. That led me to do a ring job which it for sure, needed anyway. 
 I've thought about a new wiring harness, but it may be fine if I can get it moved forward where it belongs. I hesitate to remove the original unused ignition wiring because who knows if the Gerex will hold up long term?
 I agree with CycleX where Ken mentioned the 17/48 sprockets may be replaced with higher ratios if the engine makes enough power to pull it. I have a new 18 tooth front I'll swap onto it.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #237 on: April 30, 2023, 12:56:31 PM »
 I ordered a morgan carbtune, it's hard to believe I never had one. My brother gave me a mercury tube manometer once but it was broken and the mercury is in his garage. I handed it back.
 The Sandcast needs adjusted badly, I may learn on another bike before checking it out though.
« Last Edit: April 30, 2023, 01:06:24 PM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #238 on: May 01, 2023, 05:31:46 PM »
 I bought 8 clutch discs off of Ebay today. The seller posted the Honda part number, I'm hoping that's what they are. I got 8 because that's how many he had.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #239 on: May 02, 2023, 10:39:35 AM »
 Saved for reference, clutch cover ID.
http://forums.sohc4.net/index.php/topic,181804.msg2105714.html#msg2105714

 I did a search and found the needed early to late clutch swap info that I needed. Once again Scottly has already done what I am considering.
« Last Edit: May 02, 2023, 10:47:45 AM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline BenelliSEI

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Re: K1 Hot Rod the Rat Race is freshened.
« Reply #240 on: May 02, 2023, 06:32:50 PM »
I ordered a morgan carbtune, it's hard to believe I never had one. My brother gave me a mercury tube manometer once but it was broken and the mercury is in his garage. I handed it back.
 The Sandcast needs adjusted badly, I may learn on another bike before checking it out though.

Don..... I had to read that twice! Will be interested what you think when you try it (Carbtune)?
My old MotionPro unit is getting well used and the regular cleaning, drying and fluid replacement (after my sonand various friends borrow it), is a pain. Like the look of the Morgan unit... Get better fast!
John D.

Offline Don R

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #241 on: May 02, 2023, 10:25:23 PM »
 I also bought two of the wide top slant cork discs, shipping was a dollar more so, I realize I have the late model clutch basket and a set of steels that still have the dimples in them, I seem to be missing the wider clutch body., the one I have is gl1000.  I got a pretty good offer for a full clutch and K7 transmission on ebay. That would make an entire late clutch for the Rat Race and trans parts for repairing the F'nK, although I really don't want to split the cases on it.     
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline newday777

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #242 on: May 03, 2023, 12:31:50 AM »
Don
I thought I had read it was the 77/78 that had the longer baskets and different clutch covers?
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline PeWe

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #243 on: May 03, 2023, 01:43:47 AM »
I gave my K6 an F2 clutch.
No problem since the primary hub is the same, circlip that lock the steel basket in place.

Maybe possible to do this upgrade on an earlier primary hub without circlip? (K5 and earlier). Only a wider splined washer.

The later clutch with the double riveted metal disc with springs is an upgrade.

Clutch feels more stable than my K6 that used same setup of clutch discs, slanted outer with wider tabs. (EBC)

I use the K6 cover. It look as the F2 cover I had prepared removing the black paint and added vent nipple for hose, 1/8 NPT thread. Saved for another build.
« Last Edit: May 03, 2023, 03:38:46 AM by PeWe »
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline Don R

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #244 on: May 03, 2023, 08:14:33 AM »
 I have the longer basket and cover, the aluminum hubs are deeper I'm not positive that it can be swapped without changing the cush drive. I have the F2 clutch in a k6 case, I need to re-visit that one.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #245 on: May 03, 2023, 08:33:41 AM »
http://forums.sohc4.net/index.php/topic,189382.msg2201077.html#msg2201077

 Clutch info for easy reference.
 My Morgan carbtune that was listed as being in Ca. shipped from Hawaii. I'm hoping it isn't a China made clone like my Chibson Les Paul guitar.
« Last Edit: May 05, 2023, 08:21:41 AM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #246 on: May 05, 2023, 11:39:27 AM »
 Today it got 18/48 sprockets, I should have left the chain a bit longer, I lost a little of the longer swingarm. I plugged the chain oiler with a case plug from a junk and waterlogged T350 Suzuki. It got a dose of blue Loctite gel in place of the lock tab. The aftermarket chain guard also got the customary shock clearance notch.
 Next up is a clutch examination. I have new Honda clutch discs on the way.
 The Morgan carbtune is out for delivery so hopefully I'll be a balance guru in no time flat.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #247 on: May 06, 2023, 04:38:57 PM »
 Today my "Honda" clutch discs came. 8 were in a Ziplock bag with the Honda number on it, the other two from a different dealer are the late type wide tab genuine slant cork discs. I noticed on the 8 the clutch material or adhesive has squeezed out onto the tabs and they won't go into the F2 clutch basket. Of course in my haste to assemble it I had already oil soaked them. I had to sand the outside diameter of 72 tabs and 144 edges and clean the grit off of each one. They do fit into the F2 basket now. I left them in the oil and came back in.
 Update, the F2 clutch is in, with the K6 clutch cover, all new discs and some really nice plates. I used the small spline washer that usually sits behind the snap ring on a late clutch. It's odd, the basket appears to be the same depth except the tabs stick out more, the lifter is the same but the clutch hub is deeper as is the side cover. The lever pull is harder, I may take out the plug washers that are under the springs.
 Test ride #3 soon. I'll take the same route and see if it makes it now that the charging system is connected.
« Last Edit: May 06, 2023, 09:58:05 PM by Don R »
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Don R

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #248 on: May 12, 2023, 12:03:47 PM »
 I swapped the sticky caliper for a rebuilt one. I realized I had forgotten the piece between the piston and the pad. Then I also noticed I had a mixed set of pads. I opened the bleeder and put a drain hose on it into the brake fluid disposal bottle but when I compressed the piston, fluid still shot out of the M/C. I did think to cover the tank with a towel but DANG. What a mess. I got the spray wax out and wiped everything down.
  I hate brake fluid, you would think there would be a good paint safe replacement, and yes, I know about silicone, been there and didn't like that. 
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline newday777

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Re: K1 Hot Rod the Rat Race is getting dialed in.
« Reply #249 on: May 12, 2023, 12:49:37 PM »
Have a spray bottle of water to hit any spills
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A