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Could be that the rubber boots have lost their elasticity over the years, mine were the same when I tried to remove the carbs. I pointed my shop heater directly at the boots for an hour or so (a hair dryer will do the job too) until the boots are nice and warm. This should make them more...

You painted those rims with what? They look really great - what exactly is that paint you used? Great job!

Are the rubber tank mounts installed on either side of the front of the frame? If not your tank might be sitting too far forward and this could result in the bars hitting the tank Hope things are going well mate - riding season is here and man I'm jonesing to get my CB on the road... Could...

How you getting on with the cylinders? The deepest I've gotten in to the engine is the valve head to check the valve clearances, but would like to change the piston rings as well. Looking at Clymers I think I can do it, have to remove the overhead cams, timing chains etc. Little daunting!

Did you have a crack at those carbs yet? I finally got the engine out of the frame yesterday and onto the workbench - now that it's out I'm going to look at the pistons and rings and probably change all of them. I have low compression on cylinder #1 and it might be down to the rings.

Hey man, nice ride! Working on something similar - 1981 Honda CB750K and having a blast. Welcome!

It's an intricate job but I really enjoyed it. I had Mike's booklet, and the rebuild kit from Randakk.com which has gaskets, o rings and other assorted gubbins that are considered amongst the best you can get. Followed the booklet to a t - I dismantled the rack as well which made getting to...

Hey man, looks like those compression numbers are on the up, that must be encouraging - here's to onwards and upwards :thumbsup:

Ah, there's a man who knows what he's talking about! What do you think might be giving him his low compression? Rings?

I'd get the carbs on the bike for sure. Otherwise you've got a big hole on each of the cylinders where the carbs should be - that'll surely affect the compression. Try the test again, with the carbs connected to the cylinders, clamped on nice and tight. Soften up the rubbers first by warming...

Carbs were on when you ran the compression test?

By the way, dotheton.com is worth joining if u haven't already. Busy forum, lots of help. I have a thread over there which may help you out as well, under Member Introductions. Just an idea

Otherwise (and I'm no expert) it could be u need new piston rings, or you could try blasting some sea foam into each carb's air intake with the engine running. You'll see a drop in rpm but throttle past that (around 5000rpm) - the sea foam might knock off carbon deposits in the cylinders and...

When u were cranking the engine for the compression test, did u have the throttle wide open? Doing so could give u a better reading

Read it, and bought his booklet =) I've emailed him loads too and he's always really quick to help. Great guy. Good to hear your bearings are in great shape - getting those things out sucked.

Yeah, getting those clearances right was a heck of a job. Mine came in pretty good but it took a while. Good luck =) I'm still waiting on a carb rebuild kit to arrive so working on the wheel bearings. Man, getting those suckers out was - how shall I say this - challenging? Let me know if...

Hey man, how you getting on with your build?

Thanks again mate, you're always here to help. I appreciate that a lot I'll have a crack at this today - also need to remove the bearings which I think I have a plan of attack for...watch this space...

Got the rear wheel off yesterday and opened up the hub and drum. According to the Clymers, this bearing retainer is supposed to unscrew, but mine is not moving for love or money, at least not by hand. Here's a photo of the wheel - The bearing retainer is looking a bit beaten up as well...

That's hilarious! Haven't got a saw in the shop so drilled out some slots for the clevis and another hole 14" down the 2x4 and hey presto - That's what I'm talking about Height looks a million times better, frame looks straight and man, I'm digging Rhonda even more with her Jimbomatic rear...

Here's how it looks now - A previous owner chucked some 11¾" shocks on the back which is all fine and dandy but they ain't gonna cut it for the build I have in mind. I want to raise the rear to give the bike a straighter look, thinking 14" - 15", but trying to figure out which size to...

My ride is the 1981 CB750K - still waiting to hear from the local shop if the piston is salvageable or not. Looks like I can pick up a complete caliper rebuild kit for $50 - $60 which isn't bad I guess, but that doesn't include pads. Anyone know who makes the best replacement brake pads?

Thanks man, do you know anything about these rebuild kits? - http://www.ebay.com/itm/FRONT-BRAKE-CALIPER-STAINLESS-STEEL-PISTON-SEAL-KIT-1979-1981-HONDA-CB750K-/222311035590?fits=Year%3A1981%7CMake%3AHonda%7CModel%3ACB750K&hash=item33c2c532c6:g:bLcAAOSwNRlYJL~j&vxp=mtr I can't find an OEM...

Evening one and all, Looking online for some fairly obscure parts for the front brake caliber (dust boots, piston, brake pads plus a few other random parts) - anyone recommend some well-stocked online sites? I've had a good look around (bikebandit, houseofhonda, partzilla, hondapartshouse...

Hope you get everything worked out bud

I used whatever my local Napa could get for me. I'm not planning on holding on to it forever however - once I get started on the brat build I'll be looking for a much, much smaller battery to hide out of the way somewhere

Cool, glad you got them sorted. My guy has a bunch but they're pretty random

Any luck contacting a local mechanic Surfer to see if they had any shims?

Just finished a valve clearance check, replaced a few shims and now have 0.005" clearances across the board. Emptied a can of Honda's carb/combustion chamber cleaner into the carb intakes and compression check now looks better - #1 - 140 (130 before) #2 - 150 (same) #3 - 165 (150 before) #4 -...

Thanks again amc - sadly looks the damage has already been done by a precious owner on several of the threads. Can chain tensioner bolt thread? Stripped. Bolt securing the tach to the cylinder cover? Stripped. Wonder what else I'll find the deeper I go... Incidentally, replaced the...