What to do with PCV system on a L92 drag application?
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What to do with PCV system on a L92 drag application? Ok...I figured I'd bring this up so once the motor goes in the car, I'm not out more time trying to decide what to do with the PVC system. I have a '00 Camaro SS that I will be converting to a L92. I've already got the L92 block and conversion parts. The valley cover is the same as the LS2. I was just looking at it and comparing it to my LS1 valley cover. There is a threaded bung on the backside of the LS2 valley cover which I have no clue what it is. Then there's a tube on the front side of the cover and some type of box on the bottom side that it routes to. Neither one of these is on the LS1 valley cover. So I don't know what I'm suppose to do there with either one of those. This will be a drag only car that will see nothing but high rpms. What do you think my best option is for the PCV system? Thank you.
Originally Posted by wyndzer
Cap everything off and run breathers on both valve covers.
MANY people dump the PCV on street cars....
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So what's the threaded bung on the backside of the valley cover? What's the pipe in the front with the box on the bottom side of the cover that its routed to? If I cap everything off and run breathers, won't oil come out of the breathers? If I did do that, wouldn't I need to do both sides?
The threaded bung on the top of the rear of the valley cover is for the oil pressure sender. On the LS2+ motors, it's screwed into the valley cover instead of directly into the block.
The pipe on the front of the valley cover goes to the PCV valve.It goes from there on all LS6's as well. It doesn't come from the valve covers like on the LS1's. This was to try and help so that it didn't suck as much oil through the PCV. It still will do so though.
Oil won't spew from the breathers. You will see a lil smoke ventilation from the crankcase when the motor runs. The entire motor is all vented together, so technically you only need to vent one side with like a Metco breather. You can run a crossover pipe or a 2nd breather if you really want to..
The pipe on the front of the valley cover goes to the PCV valve.It goes from there on all LS6's as well. It doesn't come from the valve covers like on the LS1's. This was to try and help so that it didn't suck as much oil through the PCV. It still will do so though.
Oil won't spew from the breathers. You will see a lil smoke ventilation from the crankcase when the motor runs. The entire motor is all vented together, so technically you only need to vent one side with like a Metco breather. You can run a crossover pipe or a 2nd breather if you really want to..
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Thanks for the info on the bung and pipe on the valley cover. Now I just need to figure out what valve covers to use. I may even consider relocating the coil packs for easy access to the heads. So do I cap off the small pipe as well on the front of the valley cover?
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From: detroit, Mi
put a vacuum pump on it and run 10lbs of vacuum and you will be good to go. I ran an aerospace one for 3 years.
http://www.aerospacecomponents.com/vacuum_systems.htm
Matt
http://www.aerospacecomponents.com/vacuum_systems.htm
Matt
This is what I run as I have crap for a budget.
http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
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So what does a vacuum pump do? I know a lot people who just ditch the system all together and run breather(s) which is what is being suggested to me now. What's the beneifit or advantage of running a vacuum pump?
Yes it does, if you look at all the fast guys they have vacuum pumps, I'm a broke *** so I run the setup I showed you which is good for maybe 3-4inches of vacuum where you would get 10 or more from the pump.
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Is a vacuum pump worth any power? If so, how much? If I did consider doing this, I would like to run a nice setup. But keep in mind as well, I don't have tons of money to spend on a setup either. So I guess my question is, what vacuum pump/system would be best bang for the buck?
Originally Posted by ONEBADWS6
At least run a scavenge system to your headers from the valve covers (what I run) or a vacuum pump.
If your not running an extremely free flowing exhaust then I wouldnt waist the time with a header mount system.
You will have less high RPM ring flutter, less mixture contamination, cleaner burning plugs ect. Every time I ran the car hard I noticed I had some slight oil leaks on the floor, the system eliminated that problem also. Eventually I want to do the pump set up on the new car.
The vacuum pump is the only way to go though...IMO
i thought i heard of ppl doing this and sucking oil out hte motor cause of too much vaccum. i heard old schoolers use LT1 air pumps for this, some how using them for the vaccum pump
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From: detroit, Mi
Originally Posted by Quik
i thought i heard of ppl doing this and sucking oil out hte motor cause of too much vaccum. i heard old schoolers use LT1 air pumps for this, some how using them for the vaccum pump
Matt