crx1856

i took my car to the dyno today and made a miserable 178whp @10 psi. the tuner new something was wrong from the low #'s. my setup is b16 84mm bore on ge sleeves.je 9.5:1 cr probe rods gsr cams, portflow 3 angle head/springs/retainers,all new pumps/bearings/seals.(import builders built). after checking everything else, he did a leakdown test and got these results.
#1 7%
#2 19%
#3 9%
#4 10%
i broke in the motor for 500 miles fairly easy but not babying it. any ideas what the problem could be?

Teg4e

i dunno if that's really the problem. I had a 35% leak on one of my cylinders and still pulled 192whp @ 6.5 psi.

Blown90hatcH

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by crx1856 &raquo;</TD></TR><TR><TD CLASS="quote">i took my car to the dyno today and made a miserable 178whp @10 psi. the tuner new something was wrong from the low #'s. my setup is b16 84mm bore on ge sleeves.je 9.5:1 cr probe rods gsr cams, portflow 3 angle head/springs/retainers,all new pumps/bearings/seals.(import builders built). after checking everything else, he did a leakdown test and got these results.
#1 7%
#2 19%
#3 9%
#4 10%
i broke in the motor for 500 miles fairly easy but not babying it. any ideas what the problem could be?</TD></TR></TABLE>

I dont know man. That #2 is kinda scary. I built my engine and did my leakdown and I got 3% across the board after 1500 miles and 200 miles boosting.

Jason

crx1856

do you think it could be a headgasket? the thing is, my car runs fine. the only time i saw smoke is when it was on the dyno at full throttle(black smoke). if my rings were fried, wouldn't all the cylinders have a high leak percentage? what should i look for when i pull the head?

SuperSH

Where was the air coming out when you did the leakdown? The intake, oil fill cap, in radiator or the exhaust?

crx1856

i remember him saying he didn't think it was coming out the exhaust. i'm not sure if he found out exactly where but he did say he thought it was coming out the cylinder.