TYSON1997

Anybody running a vacuum pump or a diffrent type of pcv setup than stock. I got some ideas of my own, But just trying to see if anybody else has anything they have come up w/.

AVB

Yup... Moroso Crankcase EVAC

http://store.summitracing.com/egnsea...5&autoview=sku

Tony @ MPH

I used to think the more vacuum, the better... but beware. Those of us experimenting with some check valves that work awesome, and are seeing 15-20inHg of vacuum in the crank case know... some vacuum is OK, too much vacuum is a problem.

Just be sure that whatever you go with is not capable of drawing too much vacuum or you will have other issues to contend with.

TYSON1997

I bought the newer style valve covers w/ only one vent on each side. Then im going to run the 2 lines to a catch can w/ no pcv valves inline. Then coming out of the catch can you will have the 2 pcv valves inline w/ 2 lines going to throttle body and intake. Then in the catch can will be an adjustable minature vacuum relief valve. This way I can maintain 10-12" hg in the bottom end. And with the extra volume of the catch can it will almost act like a vacuum resevoir.

AVB

Just in case you hadn't tried this yet.. 12-14in seems to be what has gotten good results. Dont know for sure if that applies to our LSx motors.

http://www.gzmotorsports.com/vacuum-control.html


Arnel

TYSON1997

Hopefully the intake will be enough to draw 10-12" w/o a fresh air vent, But IDK anybody have any thoughts on that.

0C_Williams@RPM

These Pumps can easily draw up to 25" of vacuum but are regulated, thius allowing control of vacuum from 4" to 25".



4 Vane Pump...........3 Vane Pump


4 Vane Front View....4 Vane Pump Side View



4 Vane pump monted, Plumbed and atttached to a the appropriate sized oil evac/seperator -

TYSON1997

I have a maggie and they replace the stock tensioner so I cant get rid of it. And I cant find a vacuum pump that either doesnt mount right there or is compatible. Any ideas?

Bill Reid

Nice stuff... PM me manu please? Thanks

Mr. Lucky

Those 4 vane pumps get the job done. PM me if anyone needs details or has questions.

LRD VDR

Funny ya'll mentioned this now but I just finished installing an electric vacuum pump that's triggerd by a hobbs switch. As soon as it see's boost at 2psi or more, triggers my vacuum pumps to come on. I'm trying to come up with a way to run one the vacuum pump at all times by lowering the voltage to it until it see's boost!! I'm all ears if someone has an idea to do that with. I'm still in the R&D research phase and have just a few bugs to work out. The only question I have for you guys is that where are you guys measuring the vaccum at?? I'm running a vented oil breather cap also but when the pumps come on, you can feel the draw on the oil filler neck pretty well. And the pumps are mounted in the battery tray area and looks pretty clean.

Shahram

PS...I didn't mean to hi-jack the thread.

0C_Williams@RPM

If I install a gage in the car, I measure the vacuum at the valve cover area, For a temp measuring point, slip a hose over the dipstick tube.

0Rob@ChampionMotors

I've wanted one of these á while back. You said you would send me a gutted unit to trial fit because one of my intake pipes from the TTI X kit might be in the way. I am still waiting.
Rob.

0C_Williams@RPM

Rob, resend the address and I'll send the gutted pump and bracket...sorry.

Charlie

Bill Reid

Doesn't the passenger charge pipe come up and over the heater core and rad hoses? Like the Stage1 kit? I'm pretty sure it does... and judging by an old pic I have... I would say a pump in the position Charlie puts them in would not work. Maybe a redesigned bracket... assuming there is enough hood clearance? I would think as long as the pump (including the hose ends on top) doesn't mount higher than, say, the coolant reservoir, you might have something(?)

AVB

Could the alternator/pwr steering layout of the GTO be made to work on a C5? It may just open up a location for the evac pump...


Arnel

TYSON1997

Sounds cool post some pictures. You could leave the pump on all the time and put an adjustable vacuum relief valve inline w/ system. I bought newer style valve covers w/ only 1pcv vent on both sides. no fresh air breather. Also seales oil neck, This way the motor will seal. Then you can put a vacuum gauge in a valvecover or anywhere in sys thats sees pressure. Gauge is a good idea, If your over 15"hg or so you could be adversly affecting the oiling of wrist pins! Not worth a motor for the little gains youll see.

LRD VDR

I'll take a temporary reading at the dipstick and post later this wkend.

Shahram

C6dude

Pics and details of my electric crankcase evac system.... scroll down for pics

http://www.digitalcorvettes.com/foru...t=62128&page=2

http://www.digitalcorvettes.com/foru...t=62128&page=4