bad23591

Having a little problem. I have done a full b18c swap in a 93 ej. Bought full swap from hmotoronline and been very reliable. It is pretty much my track car and every other day I will drive it to work. My issue is when I take a hard turns on the track it smokes pretty bad. Running 275/35 Hoosier r6 so it has some serious grip in the corner. First noticed it at nccar in North Caroline. Taking the long sweeping turn, was going clockwise so it was a long left turn that sweeps almost 360°. I know its burning the oil cause after about 3 lap I'm about 1 to 1.5 quarts low and quites smoking. No leaks. Drove it to work for awhile to make valve seals or rings bad. Burns about a quart between oil changes 3000 miles. Doesn't smoke when I fire it up in the morning. Small puff of black smoke if I down shift and romp on it but no blue smoke. I'm am stumped. No oil in intake either where valve cover port connects to intake.

Calif_Kid

You mentioned going clockwise in a long left turn. Did you mean counter clockwise?? I've also got a B18C type R, and I used to have issues with it smoking during long left turns. The smoking was reduced with thicker oil (Royal Purple 10-30 to 10-40 to 20-50), but was still an issue. A longtime racer took a look, and noticed that although my valve cover was vented from the front to an oil catch can, that the rear port (near the oil cap) still had the factory line connected to the intake just before the throttle body, so the oil was pooling/getting sucked out to the intake during long left turns. He rerouted the line to the oil catch can, and then capped off the original port. Here's a picture of that braided line going to the catch can, plus the original port (in upper left part of the picture) before the throttle body capped off and with a yellow zip tie.



and here is an overall picture showing the extra vent lines from the front of the valve cover plus the new one from the rear etc...

- Jim

bad23591

Jim thanks a bunch. I thought it might be the valve cover vent but I seen diagrams where that vent actually sucks air in. But it makes sence why only in a left turn the oil would be pushed in the direction of the vent.

bad23591

And to answer your qustion about the left hand turn. It would be turn 6 that it smoked in. http://www.n2td.org/wp-content/uploads/2014/03/nccar1.jpg

GSaura

I've had 2 cars smoke at the track, a b18c and a b18c1. Valve seals both times. Cars both smoked the worst in one particular left hand, sustained hi g, hi rpm, part throttle turn. I don't think the turn being left handed had much to do with it - I think the other characteristics of the turn were the most important. The motor that smoked the worst didn't smoke at all on the dyno.

bad23591

I would think that if it were the the valve seals it would smoke on first start after sitting from oil seepage. It only does it on the particular corner turning left. Idk if you clicked the link to view the photo but it is a long turn. Yet to run it in the opposite direction which would make it a right hand turn. But I will find out in October 12 when I go back.

iwannarace

Had same problem - turn 6 at sears point, turn 2 at thunderhill - both long, higher-speed left-handers.

bad23591

Ever find out what the problem was. Don't want to go spending money where I don't need to be.

GSaura

The only other time I'm sure these motors smoked was during decel in gear right after a downshift. Not sure about start up. Hopefully your problem is something simple.

iwannarace

Officially, no, but I'm pretty confident it was due to lack of venting. I had no catch can and was running the OE PCV system. The oil was either going through the cylinders via valve cover to IM, or being blown out the black box seal onto my header - probably both. Pretty much had to go 6/10ths around both those turns to keep it from happening. Was actually black flagged once at each track for it. Route the VC to a catch can and see if it goes away.

mrrobertle113

In for ideas.. I smoke at turn 1 at button willow (left turn)

Lo-Buck EF

how are all of your pcv systems run?

GSaura

Valvecover vented with a breather. Otherwise stock. What's the setup you use?

bad23591

Thanks. I think I'm going to try a catch can. From what you said and couple other people sounds to be the issue. Never thought about it coming out the black box and blowing onto my header. And I had same issue. Black flagged me and said I was leaking oil on track. Never showed me where I was leaking oil I think they just thought from all the smoke

bad23591

I'm not downshifting before the corner. I down shift in turn one and it doesn't smoke. Staying in third pretty much whole crack except for couple straits.

bad23591

Stock setup. Changing to catch can

96dxB16

I had the same problems in turn 2 at THill, did a setup similar to Calf_Kid but I needed mine to drain back to the oil pan as I was puking too much oil into the catch can.

iwannarace

Stock setup. Not even a vc breather...