I have a 95 Integra GSR B18C1, I just replaced the engine my self (mechanic but still learning more and more) w/ a used long block w/ around 160,000 miles on it because i sucked water into my cold air intake and put 4 holes in the block on cylinder #1.... yeah, that sucked!!!! So bought this used long block for $1200 our cost (shop) The engine runs great, but when in vtec comes in under acceleration, the is smoke from the exhaust (oil). Is it possible for the leak to be something other than rings? I have exactly 175 psi compression on all four cylinders. Is that the normal compression rating for these motors? I have heard that vtec uses oil.... idk.... if it was a non vtec i would say it needs a set of rings, but since it is vtec I am confused! Can someone whom is knowledgeable please give me some advise or some test that i can run?

 

i done a leakdown test yesterday and 2 3 and 4 have massive leaks.... on 4 the leak is coming from 3's spark plug hole and on 3 the leak is from 2's hole and on 2 the leak is from 3's hole... what the heck? Any ideas? Valve guides maybe?

 

175 is kinda low,i would say your rings are going bad....time for a rebuild

 

That motor has had better days. Rebuild it.

VTEC does NOT burn off oil like people think, a worn out motor does though.
VTEC uses oil to operate, but when it is not engaged that oil it uses goes right back into the motor.....LOL....

My B16 gets the **** beat out of it regularly, and it loses NO oil. Maybe half a quart between changes at 5K.

 

The crossover can also be a head gasket problem.

 

if it were a headgasket wouldn't i have white smoke and oil in coolant and be overheating? Mitchell OnDemand5 says 200 is max comp on stock internals and like 110 is service limit. So I guess what I am asking is what would cause the leakdown test to show that leakage between cylinders. The is no air coming from the dipstick, so it is not the rings!

 

I'd second either the headgasket or a crack in the sleeves.

Head gasket failures do not always expose either the coolant or oil passages.

You can still burn oil even with good compression, when your oil control rings are bad.

175 is fine really, and not that bad considering there is a LEAK. It should come up more when the leak is fixed.

You need to pull the head and find out whats going on in there.

Janos

 

I had same issue lsvetc. Had perferct compression on all four cylinders but valve seals in head were shot I mean you could see a space between the valve. and it would smoke like crazy when it hit vtec. Im not a Honda mechanic but I did stay at a holiday inn last night

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90lsvcrxva &raquo;</TD></TR><TR><TD CLASS="quote">I had same issue lsvetc. Had perferct compression on all four cylinders but valve seals in head were shot I mean you could see a space between the valve. and it would smoke like crazy when it hit vtec. Im not a Honda mechanic but I did stay at a holiday inn last night</TD></TR></TABLE>

he doesnt have perfect compression though...175 is low,its supposed to be 210 to around 230 his rings are definitely going bad..sorry to have to say it but its time for a rebuild

 

hotrod is right compression is kinda low sorry does sound like a bottom end prob. needs rings

 

While I agree with everyone else that the only thing that will fix it is probably new rings, i have one more question..

The block you bought, is it another c1 block? or is it just an ls bottom end? The reason i ask is that if you are running some hybrid, your compression might actually be ok depending on the bottom end you chose. if it IS a c1, then yeah, it sounds like ring time to me.

 

b18c1... if this is true, then why is the service limit 130 and max 200 for stock? comp rings and oil rings are 2 totally diff things! You can have good comp and bad oil control rings.....

 

back to the leakdown test..... what would make it come from corresponding spark plug holes and not have hissing from dipstick? Since there is no hissing really from dipstick rings are out of the question!

 

if the head's warped from say... over heating, or the head gasket is cracked between cylinders where coolant isn't at then it could cause leakage in other areas... my hg on my d15 is cracked like that... doesn't smoke or steam, but exhaust gets into the cooling system and boils it slowly till it over heats.

 

thanks man! I bet that the head is warped now that you mention that.... the motor that i have I got from salvage yard and has new headgasket and water pump... it prob got hot

 

bad valve guide seals it sounds like, also check did u check your spark plug tube seals?

 

yes that is what i first suspected... well i still have the head from my original motor.... so i guess that I will put new seals and springs and retainers in it and then swap the 2 on a nice saturday.

 

spark plug tube seals??????

 

4 O-rings under the valve cover that seal the spark plug holes from letting oil in.

they aren't the cause of any of your problems though I wouldn't think.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 90lsvcrxva &raquo;</TD></TR><TR><TD CLASS="quote">I had same issue lsvetc. Had perferct compression on all four cylinders but valve seals in head were shot I mean you could see a space between the valve. and it would smoke like crazy when it hit vtec. Im not a Honda mechanic but I did stay at a holiday inn last night</TD></TR></TABLE>

This is what it is on mine. My valve seals are going, so I only smoke in VTEC.

 

yeah my first hunch was valve seals, Pull head and put new valve seals in it with a new headgasket and then have one of these

 

Valve seals does not explain why there is a leak between cylinders. That leak needs to be fixed first before anything else. You can check the guide to stem clearences and pop in fresh seals if you like while the head's off, but that leak needs to be fixed first.

Janos