Forum List  |  New Topic  |  Go to Top  |  Go to Topic  |  Flat View  |  Search   Next Post »

Is This a Head Leak?

  • Author: Andy (---.dsl.pltn13.pacbell.net)
  • Verified User: akpasta
  • Date Posted: 07-03-09 21:24

Just rebuilt my stock moby 50v. Running great, compression around 180 psi when cold, slightly less warmed up. I’m running without a head gasket. I decked my head and sanded down the top of the cylinder ever so slightly just to flatten it out so I could put the two together without a gasket.

Thing is, there’s oil between the head and the cylinder, I see it after I ride, it appears to be coming from where the head and cylinder meet. But, I’ve tested with carb cleaner extensively at idle, even after it’s warmed up. If there’s a leak here, it can only be happening at a particular RPM. But performance doesn’t seem to be affected.

Take a look, what do you think? Should I run a paper thin aluminum can gasket here just to be safe? I guess I could use RTV just to be sure. Should I just ignore it?

Jet is 68 (rich on purpose for break-in), and plug is dark dark brown, almost black.


and…


Caveat question…. does the exhaust look screwed in enough? It’s tight, but every so often, after warming up, I can inch it in a little bit more.
Reply To This Message  
 Topics Author  Date
 
 Is This a Head Leak?  
Andy 07-03-09 21:24
 Re: Is This a Head Leak?  new
PT 07-03-09 22:13


You must be logged in to reply to this post.

Creating an account takes only a moment, and not only lets you post, but automatically puts you in the Moped Owners Directory. This the best way to get to know others in the moped community.
Username or
Email Address:
Password:
Remember Me:
 
Do you need to create an account?
Forgot your password? We'll reset it.




Red Arrow   Swarming and Destroying since 1997   |   Contact Us   |   Back to the top