i did a comp tes the other day right after driving it ....i got upwards of 270psi..some 260...i though it must be my shitty gauge...

so i went to my buddies work and they have a snap on gauge so i drove it down the block and just did one cylinder and i peged the gauge at 250.....

what is going on here...and why has my compression gone up since i got the motor....used to be around 220-230....

on that note with that much compression why is my car so dam slow


im hoping it could be build up on the valves cause the pistons look pretty clean since i got the motor

 

yeah sounds to me like sticky valves. I would take care of that ASAP!

 

You could have a lot of carbon in the combustion chambers. Does it burn oil?

 

no.not really...i valve seals are if but only do it seldomly.....

other than that i run 5 w 20 moblie 1 and it seems to "use oil"...doesnt burn any while driving

 

sorry i run 5w30 mobile 1


any other thoughts on this ....thats pretty high reading and im starting to worry about detonation i havent heard any but you never know

 

have you checked the valve lash? i know when mine were too tight, i had way low compression.

maybe there too loose and not opening all the way.(just taking a guess here)

 

did you pull the fuel pump fuse so it doesnt spray fuel inside and raise your compression?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TraKtioN &raquo;</TD></TR><TR><TD CLASS="quote">did you pull the fuel pump fuse so it doesnt spray fuel inside and raise your compression?</TD></TR></TABLE>

That wouldn't raise it too much....I have done it both ways, and it wasn't that much different either way, so I just keep the fuse in for ease.

 

yes ive done that (the ecu fuse)
this worrys me cause i plan on going turbo this winter ...

 

LOL The name of this thread made me laugh. I thought you had a health related issue. LOL

 

hehehe
next project topic....ive got gas

 

any other thoughts on this