bigjacksauto

I got to thinking that since in our carbureted race engines especially with our Supercharged motors any sign of oil that comes in from the PCV valve
(Positive crank case ventilation valve) will cause a reduction in octane
which in turn can and will detonate a motor.

I noticed people on the internet installing these and some claiming they are picking up et in the quarter since the oil catch can is catching the oil before it hits the intake and then therefore creates detonation by reducing the octane.
At this point the newer engines start to pull timing and reduce horsepower

Anyone on here install one yet with so many projects going on I never got around to install mine but since the LNf motors are famous for bringing in oil
I was curious if anyone here has installed one if so lets see some pics and
if you have picked up oil .
Here is a thread from the Solstice guys note a gm tech puts his point of view on this.
I really see no reason not to put one on

http://www.solsticeforum.com/forum/f...f-kappa-71640/

prod

For the lnf its more a matter of carbon buildup on the valves. Powell sells a PCV upgrade.

ATLsilverSS

You will not gain any horsepower or quicker times. On direct injection engines the oil blow by does not get washed away by gasoline as with port injected engines, thus the vslve coking. A catch can will simply catch the blow by if your engine produces much (some produce much more than others). If you race and your engine spends a great deal of time at high rpms then you will most likely benefit more than an average commuter.

I have a mpx catch can that i have mounted on the passesnger strut tower via a strut bolt. I changed the silicone lines and barbed fittings for braided stainless lines and AN fittings. It hasnt been on long enough to catch any blow by yet.

colodude18

The Powell PCV solution works very well in the Cobalts. I have one myself. Here is an good read:
http://www.cobaltss.net/forums/7007089-post55.html

bigjacksauto

Colo dude
Thanks for the info I looked all over before and never found
That write up I will have to read it later and digest.the info.
Then maybe build my own setup $350 is a bit steep.

colodude18

You're welcome. $350 is a lot compared to the price of a universal catch can, but I've used one of those (Moroso, ~#135) and it didn't capture a single drop of oil. Powell uses quality components and in my experience their price is always fair in relation to the parts and work they have invested. But if you want to try and put one together yourself, power to you :)

bigjacksauto

You are probably write I am guessing $350 is fair considering everything has gone up.

donbrew

Just a question for my info; Isn't the huge air space in the intake manifold under the throttle body a PCV catch can? Or, am I missing something?

ATLsilverSS

No. There is a pvc valve there but no catch can of sorts

donbrew

Ain't no pcv valve on mine, just a tube. I was speaking about the large "drop zone" under the throttle body where the condensed oil drops.