Raptor Forum banner
1 - 7 of 7 Posts

·
Registered
Joined
·
93 Posts
Discussion Starter · #1 ·
Can anyone explain why your compression would be 100 psi. Even after a perfect leak down test. I would think that it would be about 180 psi with a 12.5:1 piston. :unsure:
 

·
Registered
Joined
·
93 Posts
Discussion Starter · #3 ·
no, did not know you had to do that. will that make a drastic diff.
 

·
Registered
Joined
·
93 Posts
Discussion Starter · #5 ·
??? :banghead:
 

·
Registered
Joined
·
130 Posts
YES THEY DO HAVE AUTO DECOMPRESSION.
 

·
Super Moderator
Joined
·
17,063 Posts
If I remember correctly a stock 660 was around 180psi w/o decomp, around 130psi w/ decomp.

So the answer to your question is the decompression mechanism.
 
1 - 7 of 7 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top