davidc1

Safer perhaps, but you create a lip pointing up/vertical which would create a barrier to the oil dropping down thru the hole.

RedCelica

Not as much as if you use a roofing nail with 4 sides...will create partitions for the oil to run down

RAIN H8R

For the 2 valve covers I did, I noticed a very small amount of oil accumulated compared to no modifications. However, the real test will come in early October as I am doing one for a local owner tomorrow. He will be running Gingerman and turn 10 is notorious for S2k smoke screens.

Generally, you will still get some oil in the catch can, but it is extremely minimal compared to what you see when the valve cover is not modified.

Theoretically you could recirculate everything, but I highly recommend a catch can for cars driven on the track. Being able to look into a catch can is a priceless option for diagnosing issues related to the health of the engine.

The SOS kit has a hole in the intake arm for the valve cover breather fitting. For SC/Turbo high boost pressure/weak compression engines with more than normal blowby, I recommend ditching the PCV and replacing it with the fitting I mention in the first post as you want to avoid pressurized air inside the engine. A single 1/2 hose on the valve cover doesn't cut it in these conditions, and this is when you lose HP and the oil dip stick will pop out (worn out o rings do not help either)

RAIN H8R

Not as much as if you use a roofing nail with 4 sides...will create partitions for the oil to run down


[/quote]

I think this is something to avoid doing.

RedCelica

https://www.s2kca.com/S2000/showthre...38#post1020038

Was more gearing towards the "fragmentation" side of things, and with the roofing nailing having 4 sides, it still leaves room for the oil to run down. If you're removing the baffle entirely and going to ensure there's no fragments, by all means drill.

s2000Junky

There seems to be some discrepancy on the need for addressing this issue based on cars modification level and the specific track. I have yet to run a catch can or any provisions at the Ridge in WA being N/A on big street tires with an F22/valve cover. I have always bypassed the front valve cover breather because I don't like the idea of getting hot oil vapor circulating through the intake no matter what, and I just leave the factory pcv in place. I never dealt with any oil blow out of the breather filter/valve cover. The valve cover is always clean and after 4-5 20min sessions I see 1-2 x marks on dipstick at most lost. I imagine that is just purely evaporation from the high oil temp. I see no smoke clouds behind me and if there is it must be very minimal because ive never been blacked flagged yet.

I think for those that do have have an issue, the valve cover mod looks to be a worthy one to address the majority of the problem and id consider doing it if i needed.

scottdh20

best i could find, i know i have some better ones out there showing the smoke screen. here is what it looks like for those who havent seen how bad it really is. that is me in the silver s2k

fast forward to 14:10

https://www.youtube.com/watch?v=I3o6sCvFcpw

RAIN H8R

I agree. For me at Blackhawk Farms with continental slicks I had trouble, but not on street tires. At Gingerman it will smoke for an S2k even on street tires. It is very obvious when it happens.

For cars/track this happens at/to, you need to do this modification. Lets start a list of track people have the issue at:




The S2000 smokescreen track list (with details when available):
Blackhawk Farms Raceway South Beloit, IL (on Slicks)
Gingerman Raceway South Haven, MI (On street tires at Turn 10)
Buttonwillow Track @ Riverside corner (mostly stock CR with Michelin Pilot Super Sport tires)

loserwill

Had this issue in Riverside corner at Buttonwillow this weekend. We were in a mostly stock CR running Michelin Pilot Super Sports.

shind3

Not as much as if you use a roofing nail with 4 sides...will create partitions for the oil to run down


[/quote]

I think this is something to avoid doing.
[/quote]

Why?