pcv ?

[i8av8]

is it completely necessary to have the second pcv valve? can i eliminate the pcv and cap it off with a small valve cover breather filter? i would still use the one to the tb.

just asking because i see some engines with a filter on turbo set-up and i see no second pcv. no appointment necessary.

 

[Don W.]

Re: pcv ?

The problem as I see it is you have no crankcase ventilation under boost. This could lead to some crankcase pressure venting someplace where you don't want.

I had actually thought of rigging up a vent into the turbo DP like dragsters use. Crankcase pressure needs someplace to go and the exhaust seemed like a good spot.

All my :2cents:

 

[i8av8]

Re: pcv ?

The problem as I see it is you have no crankcase ventilation under boost. This could lead to some crankcase pressure venting someplace where you don't want.

I had actually thought of rigging up a vent into the turbo DP like dragsters use. Crankcase pressure needs someplace to go and the exhaust seemed like a good spot.

All my :2cents:

sounds interesting. could you possibly elaborate with detailed pics? a set-up like that is ok to do? i currently have mine ran in the air intake tube just after the air filter.

 

[Don W.]

Re: pcv ?

Sorry I missed your post. Here's what I was thinking. How well it would actually work I don't know but it seems like it would work...

http://www.jegs.com/i/JEGS/555/52210/10002/-1

 

[i8av8]

Re: pcv ?

yeah, i think i would need to see how that is set up. looks simple, yet complicated. i guess what is missing on that set up is the hose to connect the breather to the tube? i don't see how or where the tube goes.

 

[s_blazin]

Re: pcv ?

you would have either one or 2 bungs welded into the exhaust pipe or maybe even into the header or crossover, a fitting in the bung(s) and then the breathers in the valve covers with hose running to the fitting with check valve(s) in the exhaust point of your choice. that way your pressure is sent straight into the exhaust just like the dragsters.

would probably be best to put it into the down pipe so you are not coating the inside of the turbo and crossovers with oil with blowby.

we had a dragster in the shop last week and i was looking at it, so my memory is fresh.

although dragsters have no exhaust it just dumps out of the headers, so if you have alot of blowby you might be coating the exhuast with oil, which if you were running a cat could clog it or the muffler up after time, but maybe not.

just a thought.

been also trying to decide what to do with my pcv's, i might try this.

 

[It's just a six]

Re: pcv ?

If you put it into your downpipe or exhaust system,the downpipe or exhaust system cannot have any backpressure,like a muffler,small pipes,long exhaust runs, etc.
These are mostly made for open header setups. IIRC?

 

[i8av8]

Re: pcv ?

i'm not running a cat and i have a straight thru race muffler w/3" down pipe back to the rear roll pan. i tried to put my exhaust as straight as i could get it.