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Low Compression Readings. I Think the Rings Are Shot

  • Thread starter Thread starter MadCapsule
  • Start date Start date
Nessism said:
It's critical to always torque the cylinder head and check the valve clearances after a brief break in period, 600 miles or less, after performing engine work.
Click to expand...

Ah. Wasn't aware of that.

Well, here's hoping I haven't burned up any of the valves. Is there a way of spotting a burnt valve without removing the head?
 
MadCapsule said:
Is there a way of spotting a burnt valve without removing the head?
Click to expand...

You probably haven't hurt it yet. The fact that your compression numbers are more or less even hopefully means nothing is burnt. A burnt valve would give very low compression if any. Just check the compression after the valves are adjusted correctly.
 
tkent02 said:
You probably haven't hurt it yet. The fact that your compression numbers are more or less even hopefully means nothing is burnt. A burnt valve would give very low compression if any. Just check the compression after the valves are adjusted correctly.
Click to expand...


Good to know.

I'll report back after I've gotten the clearance numbers.
 
Keep us in the loop. If you need another set of eyes, let me know. The gang is going to Union Grove to race on Thursday. If by Sunday you are no closer, give me a call. My house visits are very reasonable...(fuel).
IF its a big problem, I will call Mr. Wizard(Trippivot)
Curt
 
Just got home from work and I'm about out of usable sunlight (I really want a garage). This may have to be a Saturday morning project.

I don't want to start and then leave the bike sitting outside with the valve cover off, even if I do have a bike cover.

Thanks for the offer, bellucci. I'll give you a shout if I need more help.
 
After valve seals and a lap i adjusted my valves 3 times before they settled in.And retorqued 2 times.
 
Wait a minute. You took the bike to a shop to do the cylinder head!?!

Dude, you should have called me. We could have done that here in an afternoon.

If you end up needing parts for the top end, I have fresh rings and some valves for the 750.

Shoot me a text.
 
Text sent. Looks like I'll be taking the bike over to Mr. C's place soon.

My new 530 chain and sprockets arrived today as well. I have some questions about the installation, so I'll start a new thread in the appropriate section.
 
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