i just did a compression test and it got:
#1 - 135, 135
#2 - 140, 140
#3 - 130, 130
#4 - 135, 135

i pull the oil cap while its running and can feel the air a foot above the valve cover. time for a rebuild or a new JDM motor? what would be the better bet? its a 92 b16a



Modified by Frickr at 12:09 PM 11/11/2007

 

put a dop of oil in the cylinders and then see what you get have all plug wires disconnected. it should raise a lil

 

o and the air out the valve cover is ok but tht depends weather you have the hose connected to your intake

 

theres a hose connected to the intake. ill go back out in a little while and try it with a litle oil, its to damn cold to be sitting out there for an hour right now.

 

o yeah your in dakota....snow drifting????

 

pretty damn close

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Frickr &raquo;</TD></TR><TR><TD CLASS="quote">i just did a compression test and it got:
#1 - 135, 135
#2 - 140, 140
#3 - 130, 130
#4 - 135, 135

i pull the oil cap while its running and can feel the air a foot above the valve cover. time for a rebuild or a new JDM motor? what would be the better bet? its a 92 b16a

Modified by Frickr at 12:09 PM 11/11/2007</TD></TR></TABLE>

every compression tester is different, the thing to look at is the variance between cylinders

For Example,

#1 cyl=150
#2 cyl=145
#3 cyl=100
#4 cyl=150

you would then have a problem, with cylinder 3.

 

you did do the test a wide open throttle?? right?

 

i went out and checked again, and it was 170 acrost the board.

 

So you did'nt do your first test at wide open throttle?

Did you use oil in the cylinder?

looks like a pretty big jump.