I dont know where else to put this, but my b16b laid down-

1- 195
2- 165
3- 178
4- 185

Are these good/bad/average?.

stock motor

 

depends on the compression tester but the numbers seem to vary alot but i would do a leakdown also if i were you

 

what would that tell me?

rings?

it smokes on accel and decell(worse)

 

yeah that would tell you if you loosing compression thru the rings or if its the valves....and if it has leakage then add cap full of oil to the cyl if it then has barely any leak then it rings if nothing change its the valves

 

pretty sure my B16B put out ~220psi averaged across.

but i would be more concerned about that low 165 hole

but like was already said, compression testers are all of different quality/age/calibration/etc. i just use the same one for all my motors, and compare them against each other and mainly look that all the cylinders are within ~5psi.


ps: always down to point out the obvious, but the throttle was held wide open right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EFsSuck &raquo;</TD></TR><TR><TD CLASS="quote">pretty sure my B16B put out ~220psi averaged across.

but i would be more concerned about that low 165 hole


ps: always down to point out the obvious, but the throttle was held wide open right?</TD></TR></TABLE>

even if it wasnt he tested them all the same and those numbers def reveal the need for a bottom end rebuild, while doing the bottom end i would replace the valve seals in the head as its not worth it having the motor apart and putting it back together to reveal that they needed replacement as well

 

true agree^.

i guess i will be bumping my rebuild date sooner than i had thought.

 

yes the average b16b puts out 220 but guages vary.... is the guage new test someone elses car also to if its the same or lower i have used a craftsman before that said my motor had 220 and then used a snap-on that said my motor had 180 so do that and a leakdown and go from there

 

its just one they had around the shop.. nothing fancy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ITR.#1446 &raquo;</TD></TR><TR><TD CLASS="quote">yes the average b16b puts out 220 but guages vary.... is the guage new test someone elses car also to if its the same or lower i have used a craftsman before that said my motor had 220 and then used a snap-on that said my motor had 180 so do that and a leakdown and go from there</TD></TR></TABLE>

yes but the fact is the numbers arent even close to each other, i would do it again, add a cap full of oil to the lower cylinders and if the #'s go up it needs rings, chances are with the numbers its in need of a rebuild

 

yeah, the gauge is calibrated the same, i take the % in change of the numbers, not the amount.

 

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

yes but the fact is the numbers arent even close to each other, i would do it again, add a cap full of oil to the lower cylinders and if the #'s go up it needs rings, chances are with the numbers its in need of a rebuild</TD></TR></TABLE>

i already stated for him to this above