i just take a compression test and here the #

1-120
2-180
3-180
4-180

add little oil

1-140
2-200
3-200
4-200

i m bit worried that my ringland is shot.. but i thought it s was headgasket. Can somebody tell me what s wrong with the #? by the way it s jdm b16a

Help me with this before i m buying the new headgasket.

thanks

 

i'm pretty sure it's your ringlands. if it were your head gasket...you would of noticed a major decrease in antifreeze/coolent with that much of a difference in compression.

 

head gasket- milky oil, white smoke out exhaust and low comp. #'s
rings- black smoke at higher rpm and low comp. #'s

 

i m really hope that it s was not ringland. i never see any smoke or anything come out of my exhaust... the only thing i have problem with overheat and the coolant kept ran out and i have to pour again.

Is there anything else where i can test and see if it s is really ringland?

 

well since you put it that way...then i'm leaning more towards blown gasket. over heating and coolent overflowing is a sign of a blown head gasket.

 

alrite let s pray it s was not ringland. i m going to remove the head tomorrow and check it out.. but i have one more question to ask. Is it possible to check if i have the bad ringland while process to replace the headgasket?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dutchman5 &raquo;</TD></TR><TR><TD CLASS="quote">i just take a compression test and here the #

1-120
2-180
3-180
4-180

add little oil

1-140
2-200
3-200
4-200

i m bit worried that my ringland is shot.. but i thought it s was headgasket. Can somebody tell me what s wrong with the #? by the way it s jdm b16a

Help me with this before i m buying the new headgasket.

thanks</TD></TR></TABLE>

Im guessing a bad ring. You would have to do a leak down test to see where the leak is coming from. (Its either a bad headgasket, bad ring, or bad valve seal) But most likley its a bad ring.

If its a bad ring your gonna need a new headgasket anyways to fix it. So its not a total lost to buy one.

liam

 

I would guess that its ring. Second guess would be a valve seal

 

Is that motor stock or built, those numbers all seem very low for a jdm b16, my stock d15b vtec pulls 200 per cylinder.....

 

im leaning more towards your rings dude, like you said yourself when you add alittle oil the comp # go up, in other words momentarily sealing the rings. but like others said you got to do a headgasket to change the rings anyway.

 

leakdown test it before u pull it apart. unless u want to pull that one piston and ring out because theres no way to tell when the head is off...

 

yeah but he also said that he needs to keep adding coolant and it keeps overheating which is usually a sign of a blown head gasket.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtekthis &raquo;</TD></TR><TR><TD CLASS="quote">im leaning more towards your rings dude, like you said yourself when you add alittle oil the comp # go up, in other words momentarily sealing the rings. but like others said you got to do a headgasket to change the rings anyway. </TD></TR></TABLE>

 

When I've seen bad rings on other cars, I've seen the compression test results roughly double after adding a small amount of oil to the cylinder... the #s didn't go up that much, to me that says it's not the rings. As for what the problem is, maybe a leakdown would help.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Devine &raquo;</TD></TR><TR><TD CLASS="quote">Is that motor stock or built, those numbers all seem very low for a jdm b16, my stock d15b vtec pulls 200 per cylinder.....</TD></TR></TABLE>

yes it s complete stock and the number seem fine to me.



<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtekthis &raquo;</TD></TR><TR><TD CLASS="quote">im leaning more towards your rings dude, like you said yourself when you add alittle oil the comp # go up, in other words momentarily sealing the rings. but like others said you got to do a headgasket to change the rings anyway. </TD></TR></TABLE>
does that mean i have 4 pistons rings are shot already??

how much does shop usually charge to do leakdown test??

 

it seems that all of your # are low. around 200 is pretty normal. ringlands never blow perfectly together so your tester may be off and the 180 cyl may be good while the cyl with 140 is the dead cyl. if your going to do a set of rings, you dont rering one cyl you do all four. rings are cheap enough to replace so i would go ahead, throw a fresh hone in each cyl (cause the one with the bad ring land is probly scored a little) rering the pistons and throw on a new headgasket.

 

oh and a leakdown test is cheap, if they charge more than 30 bucks you might as well buy your own tester

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RYAN_SJ &raquo;</TD></TR><TR><TD CLASS="quote">head gasket- milky oil, white smoke out exhaust and low comp. #'s
rings- black smoke at higher rpm and low comp. #'s </TD></TR></TABLE>

Black smoke indicates a rich condition. White smoke is oil. How would a ringland cause black smoke?

 

It's gotta be your ring lands man.

My B16 compression # are about 190-195psi on all 4 cylinders, but these are with 9:1 low compression slugs.

Either way you will have to start pulling parts off to fix it so just do it.

The longer you drive with bad ring lands the more the hone ***** up(not that i matters much if your overboring)

If your valves are bad you still have pull the head off, if your ring lands are bad guss what...head comes off.

REBUILD TIME (More power but you'll waste money)

 

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

Black smoke indicates a rich condition. White smoke is oil. How would a ringland cause black smoke?</TD></TR></TABLE>

yeah i did not get that one either, rings cause black smoke at high rpm's??? you deff got them mixed up