kayle666
NAXJA Forum User
- Location
- Temecula C.A.
Hi peeps!
92 sport 2 door 4.0 stick
my XJ has 204,xxx on it so i was considering a head rebuild vs a new motor and checked the compression to give me an idea of what direction to go in.
im posting the results to see what you all think. evidently if you rebuild the head with bad or weak rings you will cause further damage. i have searched all around and it seems that stock compression should be between 120-150 psi. that seems like a wide range to me.
# dry wet
1-146 170
2-150 160
3-148 161
4-151 180
5-150 158
6-146 158
so far all i can think of is
1. carbon build up
2. the motor has been replaced by the P.O. and its fine leave it alone
3. the rings arent seating correctly/oil didnt spread wet test again
so im gonna wet test again and compare the numbers
what do you all think?
cheers!
92 sport 2 door 4.0 stick
my XJ has 204,xxx on it so i was considering a head rebuild vs a new motor and checked the compression to give me an idea of what direction to go in.
im posting the results to see what you all think. evidently if you rebuild the head with bad or weak rings you will cause further damage. i have searched all around and it seems that stock compression should be between 120-150 psi. that seems like a wide range to me.
# dry wet
1-146 170
2-150 160
3-148 161
4-151 180
5-150 158
6-146 158
so far all i can think of is
1. carbon build up
2. the motor has been replaced by the P.O. and its fine leave it alone
3. the rings arent seating correctly/oil didnt spread wet test again
so im gonna wet test again and compare the numbers
what do you all think?
cheers!