Recent content by John Luke

So, you are correct. But I did remove all the nuts and bolts before getting the cylinders off. The locating pins on the cylinder were so oxidized that it literally was frozen together. Eventually I got to the point where I could use liquid wrench hoping it would free it and it did. But those...

That’s potentially one of the reasons I had a real hard time removing the head due to the dowel pins being rusty after I got it off and tried to remove the dowels I probably and most definitely bent them a bit probably causing it to not seat properly. Well time to buy new gaskets and new dowel...

I used new oil seals.

I’m going to attempt to fix it. I can’t even think about selling a bike that’s leaking oil. Is there a possibility that I over torqued the head? I torqued it to spec then did a 10+ mile ride to break it in. Let it cool overnight then retorqued it. Like maybe when I re-torqued it could I have...

Lol u fine. My main question is if I remove the head and the cylinders will it cause the rings to not seat properly due to removing the pistons? Because at some point I’ll need to replace the gasket. I’ll probably use a copper spray to help seal the new gasket.

Yes I’m talking about the base gasket.

If I remove the cylinder heads to replace the gasket will it decrease the compression when I put it back together? My thinking is the rings are seated and if I remove the head it will mess up the seal. Are there any ways I can fix the leak without removing the head? I’ve heard of people using...

Still a bit frustrating because it seems you said that you've done multiple bikes with like say a 75/115 set up and had absolutely no problem.

[emoji23] I'm ordering some air boots. Gonna throw her back together with the airbox on and see if that solves my problem.

I guess my question is which jet controls WOT? I have totally rebuilt my 1981 CB750C. I have done the timing and the valve clearances. I have 4into1 delkevic exhaust and individual K&N pod filters. The current jetting I have is a 135 secondary main and a 80 primary main. With 3 turns out on...

Technically it’s 135 secondary and 80 mains.

So......... I have rebuilt the top end and now I have great compression. Jetting is 135 mains and 80 secondary jets. Pulls great all the way to 60 mph and then kinda Boggs a bit. Any ideas? Thanks!

Alrighty then. I’ll degrease the mating surfaces and start assembling.

With no gasket

Okay. Well currently when I put the head on the cylinder no gasket and I put a light on the other side I can see a little light. I’m not sure if the head flexes after you torque it down but I was worried that that could cause some problems. Thanks!