I already know my car is set to run rich, but I havn't gotten on it in a few days, when I did, I got it up to around redline, looked back and theres a cloud of smoke behind me that I think was pretty blue.
Compression - 200,200,200,205
Vac at idle - 20-22
Vac on decel - 24-25

Mods -
DC 4-2-1 header w/ 2.5in collector, 2.5in high flow cat, 2.5in catback exhaust
Vortech supercharger @ 10psi
Other then that the car is pretty stock. Is the Vortech supposed to have some blowby at higher RPMs, is that just normal for a Honda when you havn't gotten on it for awhile (I know the S2000 did it if you didn't get on it for a few weeks). I'm just wondering what all would cause this.

Thanks!

 

my teg will blow a little oil out the exhaust if i run it at low rpm's all the time. but, it does have 120k miles on it(and those have been well-maintained, easy-driven). maybe there was a little too much oil in the sump or it was filled to the full point?

 

Just got back from another compression test and it was 215-215-215-215 (Give or take a couple PSI), I went ahead and ordered a new leakdown tester. We'll find out tomorrow if its just a little too much oil pressure or what

 

Kook, you've got the same problem as i do. When i take my car passed 8K it smokes a lot. I've basically got the same mods as you except mine is an LsVtec and yours is SC.
Can this occur since i use my car only one day out of the week? I usually put like 9K miles on it a year, and since it sits in the garage for most of the time can this be a cause?
Some people have told me it's due to the high flow cat i have on (2.5") but i have trouble beleiving this. Please help me, I keep telling people it doen't burn oil it's because it run's too rich but they don't think it's true.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mart_It &raquo;</TD></TR><TR><TD CLASS="quote">Some people have told me it's due to the high flow cat i have on (2.5") but i have trouble beleiving this. Please help me, I keep telling people it doen't burn oil it's because it run's too rich but they don't think it's true. </TD></TR></TABLE>

FYI if your using a high flow cat, and your car is running rich, that will destroy the internals of any high flow cat very fast.

this is not saying that is exactly what your individual problems are but that is a fact

 

my b18c1 was blowing madd smoke at any rmp over 3g replace the piston rings and it stop even on vtec but a week latter it blew up

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by phyz &raquo;</TD></TR><TR><TD CLASS="quote">my b18c1 was blowing madd smoke at any rmp over 3g replace the piston rings and it stop even on vtec but a week latter it blew up</TD></TR></TABLE>

Yeah... When you start smoking that low, something tends to be wrong normally

I checked my oil because I changed it today, it was actually about 1/6th inch over the full mark (maybe 1/8th), I drained some back out and I think its better, I'll have to check tomorrow during the day.

 

I had the same problem with mine under full boost. Turned out to be the piston rings. I had the same compression numbers as you, but a compression test only tests the top ring and there are 3 more underneath that scrape the oil off. I'll bet a leakdown will confirm blown rings.

Once I replaced my piston rings, not a puff of smoke whatsoever.

 

I don't remember nor have my helms manual with me. But, which ring is the compression ring and which ring is the oil ring?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by =p &raquo;</TD></TR><TR><TD CLASS="quote">I don't remember nor have my helms manual with me. But, which ring is the compression ring and which ring is the oil ring?</TD></TR></TABLE>

The compression ring is the top one and the two on the bottom that have the zig-zag spacer between them are the oil control rings.

 

There is only one oil ring. The two top one are compression rings. The one bottom with the zig zags i the oil ring. You should do a leak down tests to check out whats wrong. Does your car ever blow out blue smoke when you start it in the morning? If so it could be worn valve guides.

Just do the leakdown test and that will give you a good idea of whats going on in that engine.

 

my 90 integra smokes a little bit at redline, one day i seen smoke when i shifted at 6500 rpm, i dont know if its normal or not but i hope its nothing big

 

could be anything at this point

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaevo &raquo;</TD></TR><TR><TD CLASS="quote">There is only one oil ring. The two top one are compression rings. The one bottom with the zig zags i the oil ring. You should do a leak down tests to check out whats wrong. Does your car ever blow out blue smoke when you start it in the morning? If so it could be worn valve guides.

Just do the leakdown test and that will give you a good idea of whats going on in that engine.</TD></TR></TABLE>

Only the top ring is the compression ring. The second ring catches any blowby from the compression ring. There are two oil control rings (one above and one below the spacer). Trust me, I've replaced the piston rings before.

 

Leakdown test results, engine w/ 91k miles.

107psi

4% - 4% - 5% - 4%

Not bad for an engine thats been supercharged for a few years.

Edit :

110psi

All readings were below 5%. I must have had the pistons positioned a little weird when I put them at TDC. This is the first time I've done a leakdown on anything.


Modified by KooK at 12:34 PM 11/18/2005