did a compression test on my car, setup:b18c5 motor, 9:1 comp pistons, skunk 2 turbo cams,t3/t4, results were 90-95-95-90......is that normal for my setup, just started blowing white smoke out exhaust only but still runs ok till it hits v-tec then has a slight stutter....any help would be awesome thx

 

verry verry low comp. numbers, even for a 9:1 engine. Your rings must be shot, how many miles on the motor?

 

were you holding the throttle wide open while you were cranking it over?

 

yeah that's very low. it's hard to think that all your rings went at the same time but it could be a possibilty.

 

keep the throttle open and crank the car till the gauge does not go up anymore.

 

my 9:1 gsr motor is about 185-190 if that helps u any. I don't think not holding the throttle open is gonna make a 100 point difference.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kuja &raquo;</TD></TR><TR><TD CLASS="quote">my 9:1 gsr motor is about 185-190 if that helps u any. I don't think not holding the throttle open is gonna make a 100 point difference.</TD></TR></TABLE>

It makes a significant difference. I forgot to go WOT once and was like wtf, then i went wot and the numbers came back alot better.

Plus, each gauge is different

 

ok well i figured out it was just the compressiontester itself, it was fucked up, did it again and got 175-155-155-155, and i warmed up thae car a little more......but the car still smokes, (white smoke), and i was reading that ur oil rings can go bad but u can still keep ur compression, is that true? dont think its the head gasket car doesnt overheat or anything, and turbo is fine no shaft play or oil in charge pipes......any help would be awesome thx

 

if your burning oil it should have a bluish tint to the smoke. Your compression numbers def arent the best.

 

its only blowing white, not blue tint, and if its not that then i donno what it would be, and all these problems happend after my last run at the track last week

 

then its coolant

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">then its coolant</TD></TR></TABLE>

x2