Razr2

I ran this test because I thought I may have had a blown headgasket.

I was pleasantly suprised however. I let it crank exactly 5 times for each cylinder and ran all at WOT.

What do you guys think?

1 - 222
2 - 219
3 - 216
4 - 225

Motor is a full bolt on (I/H/E) b16a2 with a CTR Intake Cam and a FPR. 90k miles on it.

Should this kill any thought of me having a blown headgasket? With results like this is it still possible to have a blown HG?

Thanks guys!

civtic

figures look ok to me but i'm no expert. I put the head back on my B18 and i'm getting 215 - 220 all round, too.

What makes you think you may have had a blown gasket?.. should do a leakdown test too just to make sure the health of your motor is ok.

Civic Hybrid

yeah first off what makes you think you have a blown head gasket.......im pretty sure thos numbers are up to par tho.

Razr2

My car was pushing coolant into my overflow tank, and I had a bit of white smoke at startup. That is what made me think I had a blown HG.

IanB

You want your compression test results to be within 10% of each other, yours are within 1%. Is there any oil in your coolant, or vice versa?

civtic

yeah well i can see why you may be worried.

i would get a leakdown test done and that will tell you, or should do, will be bubbles coming out of your radiator cap with a leakdown test if that's the case (or so i believe).

it could just be condensation on startup?But yeah pushing coolant into the overflow doesn't sound too good either..

Razr2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civtic &raquo;</TD></TR><TR><TD CLASS="quote">yeah well i can see why you may be worried.

i would get a leakdown test done and that will tell you, or should do, will be bubbles coming out of your radiator cap with a leakdown test if that's the case (or so i believe).

it could just be condensation on startup?But yeah pushing coolant into the overflow doesn't sound too good either..</TD></TR></TABLE>

Well it's not doing it so much anymore.. It was when I first changed my radiator..

boosted92hatch

i told u thatr tester would help u, that motor looks damn strong if u ask my opinion. nice numbers. i doubt your gasket is bad

boosted92hatch

but one thing u did do wrong, when doing a compression test u are supposed to lodge the throttle wide open

boosted92hatch

take the rad cap off and turn your heat way up, let it idle for 10 minutes or til its warm and then fill it back up when it gets down. then u should be good.

Razr2

Thanks and yea the throttle was all the way open when I did the test. Those pictures were taken after testing each cylinder.

If the headgasket was bad the compression would be significantly lower in 1 or 2 cylinders, correct?

IanB

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Razr2 &raquo;</TD></TR><TR><TD CLASS="quote">Thanks and yea the throttle was all the way open when I did the test. Those pictures were taken after testing each cylinder.

If the headgasket was bad the compression would be significantly lower in 1 or 2 cylinders, correct?</TD></TR></TABLE>

Yup.

boosted92hatch

yes i would definitly think it would be lower unless your boosted, my y8 engine wouldnt run hot or anything and compression was perfect. once i put the car under boost it would get hot, what was happening is the pressure was blowing passed one of the seems in the headgasket and it was blowing heat into the water jacket and made it hot as hell. so i got a new gasket and ARP studs and never had the problem again

93egSLEEPER

i think 225 is what they are supposed to come from the factory stock.

killercannible

180-220 is considered healthy, your motor seems brand spankin new. If you just changed radiators you probably just had extra coolant in the system so it went into the overflow. Also a little white smoke is normal alot is an issue and if it was real bad you would either have low cylinder psi, oil in the coolant, or even coolant leaking out of the block. I say your motors fine

Hardedge

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Razr2 &raquo;</TD></TR><TR><TD CLASS="quote">If the headgasket was bad the compression would be significantly lower in 1 or 2 cylinders, correct?</TD></TR></TABLE>


No. When my head wasn't sealing and I was burning coolant, I still ran 200psi+ across all cylinders, and all within 5 pounds of each other.

As for your main concern, your motor is absolutely fine.

ariza034

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by killercannible &raquo;</TD></TR><TR><TD CLASS="quote">180-220 is considered healthy, your motor seems brand spankin new. If you just changed radiators you probably just had extra coolant in the system so it went into the overflow. Also a little white smoke is normal alot is an issue and if it was real bad you would either have low cylinder psi, oil in the coolant, or even coolant leaking out of the block. I say your motors fine </TD></TR></TABLE>

yah he is right the motor is fine u changed teh rad that means when you pored the coolent you might of had an air bubble or something in your cooling system thats why it when to the overflow u should take of the rad cap let it idle 10 min heat all teh way and you should be fine

mikeycivic

^^^^ is right. You had an air pocket in your system after you changed the radiator. burp the system to get the air out and you'll be fine

Razr2

Thanks everyone. I'm glad my motor is in good condition.

What started this whole thing about me thinking that I had a blown headgasket was that after I put in my new radiator and followed HT instructions to bleed the system. Everyone said to run with the cap off for 10 or so minutes and to let it bleed. I posted that the coolant would immediatly start to overflow out of the radiator when I did so. Lots of people said it might be the headgasket.

Razr2

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


No. When my head wasn't sealing and I was burning coolant, I still ran 200psi+ across all cylinders, and all within 5 pounds of each other.

As for your main concern, your motor is absolutely fine. </TD></TR></TABLE>

So how did you figure out it was your headgasket, and what made you think it was that?

mikeycivic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Razr2 &raquo;</TD></TR><TR><TD CLASS="quote">

So how did you figure out it was your headgasket, and what made you think it was that?</TD></TR></TABLE>

Your looking into this way too much. your motor is fine buddy!

Hardedge

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Razr2 &raquo;</TD></TR><TR><TD CLASS="quote">

So how did you figure out it was your headgasket, and what made you think it was that?</TD></TR></TABLE>

Well, I knew that there was no chance in hell my block or head were cracked, and I was pluming white smoke out of the tailpipe (your little bit is just condensation). So I resurfaced the cylinder head and replaced the gasket and everything is fine.