Author Topic: 1972 CB750K2 (start from scratch) project. Cases back together (Read 100704 times)

Davez134 · « **Reply #150 on:** January 14, 2015, 08:31:54 AM »

Quote from: iron_worker on January 14, 2015, 07:50:32 AM

What did you end up doing to sort it out?

IW

After a day and a half messing with it, I was starting to get so far off, things were just getting worse. My head hurt. Realized that at one point while adjusting I jumped a tooth on chain as well (long story) So I went back, double checked I still had TDC right (using piston stop), then started from scratch again, lining up marks on cam like stock cam. I called webcam and started going over numbers with them. Turns out, with my engine, lined up dead straight cam was about 7 degrees advanced. So I kept retarding cam until I reached my numbers. Now I really understand it though. Learned a lot.

MRieck · « **Reply #151 on:** January 14, 2015, 05:30:30 PM »

All that matters is you got it right and will get it right in future....just a lot faster.

I think now you understand what I meant with the opening and closing #'s on the valves. You can see how close they are.
That is going to be a nice engine.....it will definitely will let you know it isn't a 45 or 50 HP stock thing.

Davez134 · « **Reply #152 on:** January 14, 2015, 07:23:12 PM »

Quote from: MRieck on January 14, 2015, 05:30:30 PM

All that matters is you got it right and will get it right in future....just a lot faster.

Yeah, as soon as I started getting closer, a light just came on and I "got it." Glad I didnt just settle, with all the time I put in to the rest of the motor to make it right. Should be easy from here on out, as everything else on the bike I have done before.

Davez134 · « **Reply #153 on:** January 15, 2015, 10:59:38 AM »

Installed all balls steering bearings, not too hard. Quick question about adjustment/tightness. I know it's hard to quantify, but (without forks installed) should the triple stay in place or easily move back and forth? Right now I can move easily with my hands but it stays in place if I move frame around. (Hope this makes sense)

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edwardmorris · « **Reply #154 on:** January 15, 2015, 11:30:50 AM »

Lester wheels?? I see lester wheels! Sorry I get excited

Davez134 · « **Reply #155 on:** January 15, 2015, 11:45:27 AM »

Quote from: edwardmorris on January 15, 2015, 11:30:50 AM

Lester wheels?? I see lester wheels! Sorry I get excited

I just have a front

iron_worker · « **Reply #156 on:** January 15, 2015, 11:47:35 AM »

A tooth out on the cam sprocket ... makes sense now. Your engine will thank you later for getting it right.

IW

edwardmorris · « **Reply #157 on:** January 15, 2015, 12:07:37 PM »

Quote from: Davez134 on January 15, 2015, 11:45:27 AM

Quote from: edwardmorris on January 15, 2015, 11:30:50 AM
Lester wheels?? I see lester wheels! Sorry I get excited
I just have a front

Save it for the next one

As for your bearing thing, I do recall that's exactly how it moved with the stock bearings, free with hand but in place when I was moving the frame, so it's probably fine if you have everything torqued down on the stem...

Davez134 · « **Reply #158 on:** January 15, 2015, 04:26:48 PM »

Ok one more progress pic from today. Done till tomorrow. Would do the front but I accidentally bought 2 rear spoke kits!! Oops. Anybody need rear spokes

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calj737 · « **Reply #159 on:** January 15, 2015, 04:46:11 PM »

Only if they come with that gorgeous wheel attached?

Riceman · « **Reply #160 on:** January 15, 2015, 06:28:27 PM »

Quote from: Davez134 on January 15, 2015, 10:59:38 AM

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So the fat washer worked with the stock stem?
I'm getting ready to do this tomorrow.

Davez134 · « **Reply #161 on:** January 15, 2015, 06:33:43 PM »

Quote from: Riceman on January 15, 2015, 06:28:27 PM

So the fat washer worked with the stock stem?
I'm getting ready to do this tomorrow.

Yeah fat washer worked for me. Frame is a 71, triple is from '74. My kit instructions said how to measure before installing.

Davez134 · « **Reply #162 on:** January 17, 2015, 05:30:37 PM »

Well, I was going to install oil pump with new stopper and spring, but after looking it over from just the outside, I don't even want to put this pump back in the motor. Housing has obviously been taken apart, most screws are stripped out. One is missing between body and base, and appears not even a gasket in there. How do people think this is OK!?

MRieck · « **Reply #163 on:** January 17, 2015, 05:49:23 PM »

Quote from: Davez134 on January 15, 2015, 10:59:38 AM

Installed all balls steering bearings, not too hard. Quick question about adjustment/tightness. I know it's hard to quantify, but (without forks installed) should the triple stay in place or easily move back and forth? Right now I can move easily with my hands but it stays in place if I move frame around. (Hope this makes sense)

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With no forks the trees should not move freely

calj737 · « **Reply #164 on:** January 18, 2015, 03:31:07 AM »

Dave - just a reminder to clean the powder cost off the frame where the battery NEG cable attaches. There, and near the head stock where the HORN and LIGHT will ground. The powder coat can prevent a good, solid GROUND from occurring and you can have difficulties with the proper operation.

Frame looks very pretty in that gloss finish.

Davez134 · « **Reply #165 on:** January 18, 2015, 09:09:48 AM »

Quote from: calj737 on January 18, 2015, 03:31:07 AM

Dave - just a reminder to clean the powder cost off the frame where the battery NEG cable attaches. There, and near the head stock where the HORN and LIGHT will ground. The powder coat can prevent a good, solid GROUND from occurring and you can have difficulties with the proper operation.

Frame looks very pretty in that gloss finish.

Thanks! I knew about the spot where the Battery negative goes but would have overlooked horn/light.

Davez134 · « **Reply #166 on:** January 18, 2015, 09:12:47 AM »

Brought some stuff to work today to get done. Got bronze bushings installed in freshly powder coated swingarm. Froze bushings, heated swingarm with 500w work light, installed with some all thread. Went waaaay too easy. Now I don't know what to do with myself

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Vinhead1957 · « **Reply #167 on:** January 20, 2015, 04:33:53 PM »

That's sexy

Davez134 · « **Reply #168 on:** January 20, 2015, 06:59:51 PM »

Made some adjustments to all balls steering bearings/triple to close gap on fork ears after reading a recent thread in another section.

Thin washer on bottom, ground down top cap. Kept upper dust seal.
Also front spoke kit arrived...

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Davez134 · « **Reply #169 on:** January 26, 2015, 02:44:13 PM »

Uh oh! S#!t just got real!

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edwardmorris · « **Reply #170 on:** January 26, 2015, 05:34:01 PM »

300s or 341s?

Davez134 · « **Reply #171 on:** January 26, 2015, 05:41:21 PM »

Quote from: edwardmorris on January 26, 2015, 05:34:01 PM

300s or 341s?

No number from yamiya

edwardmorris · « **Reply #172 on:** January 26, 2015, 05:48:10 PM »

Do the nonos have chambers or straight through? I've been considering that option too after reading around here. Many seem to love the 300s for an agressive street 836...

Davez134 · « **Reply #173 on:** January 26, 2015, 06:02:32 PM »

I'll take the ends off and check for ya in a bit when I get back home. Heading to play some hockey right now. Quality of these seems great!

goldarrow · « **Reply #174 on:** January 26, 2015, 06:09:04 PM »

Those are nice! Can you also post pics of the other sides of pipes? Would like to see The chamber welding spots

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Author Topic: 1972 CB750K2 (start from scratch) project. Cases back together (Read 100704 times)