Author Topic: Dorothy III - CB750 (Read 104494 times)

MoMo · « **Reply #300 on:** September 21, 2015, 05:43:06 AM »

Quote from: 70CB750 on September 14, 2015, 03:38:49 AM

There is nothing visibly wrong with the valve train, but the cover had me puzzled. Looks like the aftermarket tappet hole caps need to be removed to get the cover off.

Hole caps also scraped some of the beautiful blue frame paint, as you can see. I am devastated

I certainly would be. You must be heart broken, maybe time for a couple Pilsner Urquells?...Larry

70CB750 · « **Reply #301 on:** September 22, 2015, 04:04:38 AM »

Scored engine stand on local CL for $20, now I need to make a CB750 adapter for it.

SOHC4 Cafe Racer Fan · « **Reply #302 on:** September 22, 2015, 07:29:29 AM »

It's a rare occasion for me to stop at a garage sale but that's how I got mine for $15!

70CB750 · « **Reply #303 on:** September 25, 2015, 03:42:13 AM »

Changed the stand to rotisserie, need access to the top and bottom of the engine.

calj737 · « **Reply #304 on:** September 25, 2015, 04:16:00 AM »

A couple of triangular braces on that would make it feel completely rigid.... Just saying, that many inexpensive engine stands suffer from the wobbles once they have an engine hanging off it.

The opposed upright is a good idea too!

70CB750 · « **Reply #305 on:** September 25, 2015, 04:19:27 AM »

I will see how it goes, will be changing the bottom tube - the "I" of the "T" - for a longer one today to have more space getting the engine on.

But when the time comes for the 258 inline six to hang on it, I will definitelly brace it some more.

MoMo · « **Reply #306 on:** September 25, 2015, 04:54:26 AM »

nice work as always...Larry

70CB750 · « **Reply #307 on:** September 25, 2015, 04:56:33 AM »

Thank you, Larry

70CB750 · « **Reply #308 on:** September 30, 2015, 03:34:25 AM »

So it starts, yesterday we had several hours long rainstorm and I used it to work on the engine.

The rottisserie works somewhat, but because of the angle of the original side, it should have actually a U-joint to turn over better.

But it will do for now.

70CB750 · « **Reply #309 on:** September 30, 2015, 03:52:44 AM »

Valve train and camshaft off.

70CB750 · « **Reply #310 on:** September 30, 2015, 03:53:40 AM »

Single notch rocker shaft, she is old

calj737 · « **Reply #311 on:** September 30, 2015, 03:55:06 AM »

I recall you divulging the story about the floor boards, but seriously, don't you want to put a full catch cloth underneath for the disassembly?

70CB750 · « **Reply #312 on:** September 30, 2015, 03:56:28 AM »

Yes, I got that covered and stay off the booze - makes me drop much less parts

calj737 · « **Reply #313 on:** September 30, 2015, 04:01:16 AM »

Quote from: 70CB750 on September 30, 2015, 03:56:28 AM

Yes, I stay off the booze - makes me drop much less parts

The Heresy!!!!

70CB750 · « **Reply #314 on:** September 30, 2015, 04:12:43 AM »

Ha! I discovered Myers's Spicy Rum not so long ago

will not hurt to sober up little bit.

70CB750 · « **Reply #315 on:** September 30, 2015, 04:14:14 AM »

Honest, that's the way I found it

Crappy picture, but the lift plate had missing corner. There was nothing wrong with the clutch function either.

Some aluminum grit in the oil pan, that's all I found.

calj737 · « **Reply #316 on:** September 30, 2015, 04:17:50 AM »

Quote from: 70CB750 on September 30, 2015, 04:12:43 AM

Ha! I discovered Myers's Spicy Rum not so long ago

I'm on my way!!!!!!!!!! Please unlock the door

70CB750 · « **Reply #317 on:** September 30, 2015, 04:19:27 AM »

70CB750 · « **Reply #318 on:** September 30, 2015, 05:01:52 AM »

Head looks good, or does it? Planning to do a leak test just like this to have a benchmark.

70CB750 · « **Reply #319 on:** September 30, 2015, 05:28:10 AM »

The clutch basket looks different.

RAFster122s · « **Reply #320 on:** September 30, 2015, 07:47:39 PM »

Nice progress. Some scary P.O. surprises I see you have uncovered.
It is disappointing to find poor maintenance and hack jobs.
David

RAFster122s · « **Reply #321 on:** September 30, 2015, 07:52:40 PM »

Did you manage to install the new support so it was directly opposite the center of the shaft for the rotation.
Nice work.

70CB750 · « **Reply #322 on:** October 01, 2015, 03:18:06 AM »

Yes, I did, but the top of the original stand is angled up, I may figure some ball joint from the pile of scrap I have to make it work better.

Anyway, I suspect the clutch lifter was installed cracked and gave in after a while. There is some damage to the cover, but nothing excessive, it will hold. You can see the little notches in reinforcement ribs.

70CB750 · « **Reply #323 on:** October 01, 2015, 03:22:08 AM »

How do you get out the spring pin that holds the kickstart shaft? Number 9.

70CB750 · « **Reply #324 on:** October 01, 2015, 03:42:01 AM »

I wish I knew the history, like how many miles on the engine. Some of the dogs are worn a bit.

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Author Topic: Dorothy III - CB750 (Read 104494 times)