Author Topic: 74 CB750 Navy Style  (Read 80465 times)

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Offline thekidd76

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Re: 74 CB750 Navy Style
« Reply #75 on: June 13, 2012, 05:23:07 AM »
Looking great...subscribed.

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #76 on: June 14, 2012, 10:21:12 PM »
Picked up my rotors from my buddy who is a machinist at NASA Langley.  He surfaced them and drilled the holes for me.



Now to tape them off for powder coating.

Somehow I have managed to lose three sets of piston rings.  So I will have to re-order those before I can completely re-assemble the engine.  I say completely, but I haven't even begun.  I just keep feeling like there is something I am forgetting to do before I re-assemble it.

Offline lucky

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Re: 74 CB750 Navy Style
« Reply #77 on: June 14, 2012, 11:24:21 PM »
How do you lose 3 sets of piston rings????
Here is the photo without all the blue.
CLICK on the photo for a larger version.
« Last Edit: June 14, 2012, 11:44:31 PM by lucky »

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #78 on: June 14, 2012, 11:39:29 PM »
Hell if I know, but they aren't anywhere to be found in the garage.  Not like I wanted to have to re-buy them.

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #79 on: June 26, 2012, 04:15:05 PM »
So I started to assemble the engine today.  Getting the kickstart spring locked onto the pin was a pain in the arse.  Also found out that my Cycle X complete gasket kit isn't so complete.  So far I have found that the o ring for the neutral switch and the o ring that goes in the front oil gallery isn't included.  They are both 18x3 o rings so hopefully I can find them locally.  The red on the bearing is Redline assembly lube.  I thought it would be more of a paste, but it was fairly runny.


One question...what side does the o ring for the front oil gallery go on, the lower case or the upper case?





Offline brandEn

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Re: 74 CB750 Navy Style
« Reply #80 on: June 26, 2012, 04:46:16 PM »
The oil gallery dowel and o-ring sit on the top case. Lower the bottom case onto the top.

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #81 on: June 26, 2012, 04:55:01 PM »
Thanks.  Wouldn't it be easier to lower the top case onto the bottom?

Offline brandEn

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Re: 74 CB750 Navy Style
« Reply #82 on: June 26, 2012, 05:03:20 PM »
No, I thinks its pretty much accepted practice to set the top case upside down and install all your parts. Then lower the bottom case onto the top and install your fasteners.

Offline lucky

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Re: 74 CB750 Navy Style
« Reply #83 on: June 26, 2012, 05:08:32 PM »
Well here is everything that will be receiving powder coat.  I meet up with the guy doing the work tomorrow to go over things.  My stomach is in knots just thinking about it.



What about the embezzelment fund???

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #84 on: June 26, 2012, 05:25:58 PM »
No, I thinks its pretty much accepted practice to set the top case upside down and install all your parts. Then lower the bottom case onto the top and install your fasteners.

hmm.  I guess I will have to take apart what I have already assembled then.  I really don't see the difference other than it being more difficult to line up the transmission gears and the arms, but there are smarter people here than me.


What embezzlement fund are you talking about Lucky?
« Last Edit: June 26, 2012, 05:28:43 PM by Harsh »

Offline brandEn

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Re: 74 CB750 Navy Style
« Reply #85 on: June 26, 2012, 07:38:39 PM »
No, I thinks its pretty much accepted practice to set the top case upside down and install all your parts. Then lower the bottom case onto the top and install your fasteners.

hmm.  I guess I will have to take apart what I have already assembled then.  I really don't see the difference other than it being more difficult to line up the transmission gears and the arms, but there are smarter people here than me.

I don't know the difference either. I have only assembled one set of crankcase's and that was on my 78 rebuild. I did it that way because that's the way my Hondaman book recommended doing it as well as a few other threads I used as a reference. I am sure its possible to do it your way but it may just be easier assembling it upside down. I am curious to see what you end up doing so keep us posted.

Offline marknpb

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Re: 74 CB750 Navy Style
« Reply #86 on: June 26, 2012, 09:28:01 PM »
I'm an amateur photographer, the blue tint is usually due to a white balance issue. Most point and shoot cameras can't adjust white balance, but you can compensate fairly well with the mode dial or the scene modes. Try using either the night portrait or the dusk/dawn scene modes. If you list your camera model, I can probably help more. Great build so far!
Picked up the powder coated parts today.  They look good.  I think he sprays a little thick which is going to cause a problem on the top of the fork lowers.  I taped in the grooves so I could come back later and pc the grooves in the blue.  Because his spray is so thick it is extremely difficult to remove the tape without pulling the powder coat off the top of the groove.  It is going to require lots of patience when removing the tape.  I am going to having to very carefully cut through the edge of the pc to get a clean line down to the tape in order to remove it.

Not sure what is up with my camera.  Every time I took a pic it had this strange blue hue to it.
1974 CB750
too nice to cafe, going to make it nice and ride it,
looking for second frame with title to cafe out

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #87 on: June 28, 2012, 12:50:29 AM »
I stopped by my local dealership today and picked up the o-ring that was missing from the gasket set.  They only had one in stock so I had to order the other one for the neutral switch, but I can at least continue with the engine assembly now.

I think I am going to give it a shot assembling the two halves of the case the way I have it setup.  I will do a dry and and see if anything rears it's ugly head.  If it goes smoothly I will then seperate the halves, apply the Hondabond, and give her a go.  I doesn't bother me if I have to lay on the floor and put in some bolts to attach the two halves together.


About the blue hue in the pic.  My point and shoot camera is an old pos.  It has only done that the one time.  Every picture I have taken since then has been clear.  I think it just had an old timers moment.

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #88 on: June 29, 2012, 02:43:39 PM »
I have had to take a break for the past couple of days.  It seems the Navy has decided to promote me to Senior Chief Petty Officer.

Wife and kids pinning me this morning.




Offline Stev-o

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Re: 74 CB750 Navy Style
« Reply #89 on: June 29, 2012, 02:49:35 PM »
Congrats!
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline brandEn

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Re: 74 CB750 Navy Style
« Reply #90 on: June 29, 2012, 03:44:10 PM »
Nice! Only one more to go. I am curious, what year did you enlist? I enlisted in the AF in 95' and got out in 00'. I always wondered where I would be if I had stayed in. Not Seattle that's for sure!

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #91 on: June 29, 2012, 04:17:26 PM »
I enlisted July 3rd 1990. Next week will be my 22 year anniversary.

Offline sniper1

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Re: 74 CB750 Navy Style
« Reply #92 on: June 29, 2012, 07:15:53 PM »
Congrats on the promotion Harsh. Once you get done we'll have to get together for a ride. Here is my build so far. Just have to get seat upholstered, hook up fuel lines, fire it up and pray, maybe synch carbs, paint the decals, etc. etc.I'm almost there. Hopefully this weekend I'll have it running, next week getting seat upholstered.

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Re: 74 CB750 Navy Style
« Reply #93 on: June 30, 2012, 10:18:38 AM »
Congratulations Senior Chief Petty Officer!  That's awesome!  A raise in pay grade is always a good thing!  I'm sure the wife thinks so anyway... :)

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #94 on: July 02, 2012, 11:57:39 PM »
I don't know the difference either. I have only assembled one set of crankcase's and that was on my 78 rebuild. I did it that way because that's the way my Hondaman book recommended doing it as well as a few other threads I used as a reference. I am sure its possible to do it your way but it may just be easier assembling it upside down. I am curious to see what you end up doing so keep us posted.

Well I did a dry fit tonight and had zero issues.  I tied some string to the rods and looped the string on a dowl rod to keep them upright while I set the top half onto the bottom half.  Just a little shimmy to set the guide pins and bearing keepers and she was together.

Tomorrow I plan on cleaning the mating surfaces one last time and apply a thin layer of Hondabond and bolt everything together.

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #95 on: July 03, 2012, 02:04:20 PM »
Well crap...Today was put the two halves of the engine together day.  I applied the case sealant, got the rods through the top half of the case without disturbing the sealant, and started to torque everything down.  I got to the last bolt on the front (forward left hand corner in the last pic of the engine I posted) and snap.

So I unlbolt everything and separate the case halves.  Luckily the remaining portion of the bolt was above the case mating surface and back out very easily.  So I guess I will head on up to the dealership and see if the have one.
« Last Edit: July 03, 2012, 02:06:08 PM by Harsh »

Offline brandEn

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Re: 74 CB750 Navy Style
« Reply #96 on: July 03, 2012, 05:13:53 PM »
oh man! Sorry to hear. As a tip, triple check ALL your threads in the jugs and head and heli coil any suspect ones. Those bastards strip real easy!!!! I learned the hard way. I helicoiled every hole in the head just to be safe. That 40 year old aluminum is way soft.

Offline Stev-o

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Re: 74 CB750 Navy Style
« Reply #97 on: July 04, 2012, 02:41:34 AM »
You broke the bolt? No torque wrench??
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Harsh

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Re: 74 CB750 Navy Style
« Reply #98 on: July 04, 2012, 04:04:44 AM »
Oh I was using a torque wrench.  I was almost able to remove the broken piece with my fingers so I guess the bolt was just that fatigued.  I am going to replace all of those front 6mm bolts just to be on the safe side.

Offline lucky

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Re: 74 CB750 Navy Style
« Reply #99 on: July 07, 2012, 11:17:56 PM »
Well here is everything that will be receiving powder coat.  I meet up with the guy doing the work tomorrow to go over things.  My stomach is in knots just thinking about it.



Thinking about the powdercoating or the bill?? LOL...lol