Author Topic: CB750 K3F - AKA The Red (Read 122078 times)

70CB750 · « **Reply #350 on:** May 10, 2015, 03:21:09 AM »

Yes, Chris, I have the same gut feeling.

Stev-o · « **Reply #351 on:** May 10, 2015, 06:03:55 AM »

Good to hear you (hopefully) have it solved.

70CB750 · « **Reply #352 on:** May 15, 2015, 01:33:15 PM »

SOHC4 Cafe Racer Fan · « **Reply #353 on:** May 15, 2015, 01:56:16 PM »

Now we're talking!

70CB750 · « **Reply #354 on:** May 15, 2015, 02:19:05 PM »

Quote from: CB750 Cafe Racer Fan on May 15, 2015, 01:56:16 PM

Now we're talking!

It was one of those weeks, took the pictures last Sunday, posted them today.

SOHC4 Cafe Racer Fan · « **Reply #355 on:** May 15, 2015, 02:28:52 PM »

It looks much better up close.

MoMo · « **Reply #356 on:** May 15, 2015, 06:06:48 PM »

very nice Prokop...Larry

rtbmrgl · « **Reply #357 on:** May 15, 2015, 08:26:53 PM »

Very sharp!

Stev-o · « **Reply #358 on:** May 20, 2015, 07:40:44 PM »

+1 very nice. The 1 thing I like most about this bike is the uniqueness.

70CB750 · « **Reply #359 on:** May 21, 2015, 04:58:36 AM »

Quote from: Stev-o on May 20, 2015, 07:40:44 PM

+1 very nice. The 1 thing I like most about this bike is the uniqueness.

Thank you

It's not like I dreamed it up, it kinda shaped itself by parts availability.

One thing I want to find are wheels from 79 SuperSport. I believe they are tubeless Comstars and that's what I really want to have.

rtbmrgl · « **Reply #360 on:** May 21, 2015, 08:38:15 PM »

very nice, i like it!!!

70CB750 · « **Reply #361 on:** June 03, 2015, 04:02:56 AM »

With the engine split on the bench, I am going over the transmission step by step.

The clutch looks like it was messed with before, the tab washer does not look factory bent. Oh well, done the top end, I can as well rebuild the low end

Looks like Partzilla has tab washers: 90431292000

Restoration Fan · « **Reply #362 on:** June 03, 2015, 04:29:20 AM »

What happened? Why did you have to pull the engine?

70CB750 · « **Reply #363 on:** June 03, 2015, 04:32:04 AM »

This:

http://forums.sohc4.net/index.php/topic,147098.msg1688991.html#msg1688991

Basically the shifting problem never went really away. It seemed like I sorted it out, and it was good for ~100 miles or so, but it kept coming back.

SOHC4 Cafe Racer Fan · « **Reply #364 on:** June 03, 2015, 06:35:27 AM »

What a bummer - right during Summer riding season. I hope you get it buttoned up and back out on the road soon.

70CB750 · « **Reply #365 on:** June 07, 2015, 03:46:23 PM »

The tool can be bought for twenty or so bucks on ebay and other places, I spent several hours making it from chunk of 4140.

But it makes me happy

MoMo · « **Reply #366 on:** June 07, 2015, 08:22:20 PM »

Quote from: 70CB750 on June 07, 2015, 03:46:23 PM

The tool can be bought for twenty or so bucks on ebay and other places, I spent several hours making it from chunk of 4140.

But it makes me happy

Handy tool to have, I am fortunate enough to have one left over from my days of wrenching...Larry

70CB750 · « **Reply #367 on:** June 29, 2015, 11:36:14 AM »

Engine still open on the bench, working on the house instead.

70CB750 · « **Reply #368 on:** June 30, 2015, 03:47:11 AM »

The second tool for the clutch.

70CB750 · « **Reply #369 on:** July 30, 2015, 04:42:06 AM »

Careful optimism is in order.

Assembled the bottom yesterday, the drum movement and shifting is silky smooth.

Could not find anything wrong with it, only took it apart, polished the shifting drum and the rod forks slide on, soaked it all in 20W50 and put back together.

MoMo · « **Reply #370 on:** July 30, 2015, 04:12:04 PM »

Quote from: 70CB750 on June 29, 2015, 11:36:14 AM

Engine still open on the bench, working on the house instead.

Get your priorities straight, Prokop

Actually, I am in the same predicament....Larry

70CB750 · « **Reply #371 on:** August 12, 2015, 06:21:38 AM »

The engine is back in, installed carburetors and air box.

The headers went in much easier than the first time, must have moved a bit when installed.

Stev-o · « **Reply #372 on:** August 12, 2015, 03:39:37 PM »

Quote from: 70CB750 on August 12, 2015, 06:21:38 AM

The engine is back in...

Thats a good feeling, isnt it!

70CB750 · « **Reply #373 on:** August 12, 2015, 04:12:25 PM »

Yeah. Scary too. There was nothing wrong with the transmission. Not sure it will shift this time.

Stev-o · « **Reply #374 on:** August 12, 2015, 04:14:45 PM »

Quote from: 70CB750 on August 12, 2015, 04:12:25 PM

Yeah. Scary too. There was nothing wrong with the transmission. Not sure it will shift this time.

I hate having an issue but not finding the cause. Good luck...

News:

Author Topic: CB750 K3F - AKA The Red (Read 122078 times)