sup guys, did a compression check on my gsr...ran a 150 across all 4 cylinders...looking to boost on stock internals...around 6-7 psi...let me know if you think i should do it..with my compression results

 

they're consistent but low. you might want to do a leakdown test before you even consider turbo. those numbers dont look good

 

low numbers.. gsr should be 200-210, get a leakdown.

either that or try doing the test again and make sure you do it COMPLETELY right.. engine is warm, throttle is wide open, etc etc.. also make sure the gauge is accurate

 

yep, make sure you crank it over til the gauge stops moving, but no more than 10 times. you might not have cranked it enough times

 

we cranked it enough, and we did a ring test also.....the numbers stayed the same when we poured the oil in each hole...

 

my buddy says its not my rings...the numbers are low..but consistent.. and that it could be a vavle job...adjustment needed...what do you think? should i just not turbo?....help help

 

Most people crank the motor till the gauge stops. But you can get a general idea by. Warm up the engine until the fans kick on and perform compression test with igintion disabled, throttle fully opened, and crank each cylinder 5 times.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiR831 &raquo;</TD></TR><TR><TD CLASS="quote">Most people crank the motor till the gauge stops. But you can get a general idea by. Warm up the engine until the fans kick on and perform compression test with igintion disabled, throttle fully opened, and crank each cylinder 5 times. </TD></TR></TABLE>

exactly... motor should be to normal operating temp , this way everything has fully expanded and creates an optimal seal.

i did a cold test to get difference and i got 170, 173, 172, 175 and then warm and i got 185 straight across b18b motor

 

we did the compression test right, thats not my concern.my concern is my numbers...should i even BOOST with these numbers..that is my question.....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cu3tip &raquo;</TD></TR><TR><TD CLASS="quote">we did the compression test right, thats not my concern.my concern is my numbers...should i even BOOST with these numbers..that is my question.....</TD></TR></TABLE>

i think the best answer is no.

 

i was told that it is possible with a vavle job....compression results will go up if its not ur rings...?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cu3tip &raquo;</TD></TR><TR><TD CLASS="quote">i was told that it is possible with a vavle job....compression results will go up if its not ur rings...?</TD></TR></TABLE>

yes it will go up if your rings are good.

 

well my rings are good...so i think ill be ok with boost

 

I suggest you figure out whats wrong with your engine before you even consider boost.

 

my results on a stock gsr were 240,235.240.240

 

bump...replies!!

 

wow thats gay. my 96k b18b is 210, 195, 200, 210. i got erronous results the first time i did it so i tighted the fittings on my tester then wehn i screwed it in i made sure it was really tigh in there by twisting the hose. no tools. then i got those results which i'm happy with.