What are your thoughts about this and is anybody having any proof that it works? Have heard that there could be up to 20 hp in this.
Yes it works. I've had it pick up more like 25-30 HP on the dyno, and while the gains on the strip aren't huge, they are noticeable. Also, you no longer have oil leaks. :TU:
You got that right. In my opinion a must for nitrous and boosted motors. Like you said best of all no oil leaks from boost going past the rings.
I agree on a boosted motor. Problem for me is not a lot of room left for a belt drive system. Just went with the exhaust evac that does not pull enough for HP boost. Helps with oil control though.
You can stuff one on the passenger side of the motor down low. I'm not sure but did the last years of the 455 did they have a smog pump? If they did maybe it's possible to use the brackets for mounting it. On a SBF with a serpentine belt I was able to use the smog pump bracket to mount the pump and a longer belt. I've always used GZ motorsport pumps with good results and they last.
Don't really know. I can notice when I blow one of the check valves out. That has not happened since I switched to FI. I know it helps with the oil leaks, eliminates the PVC valve, and you can feel it working when you pull them off. When I get everything back together I guess I should do a data log and pop off the the hose and see if there is a difference in vacuum. Cheap to do and does help.
That would be possible, but there is not much room left under my hood. Maybe someday... when I run out of stuff to do on the car. ou:
Lot's of shuffling stuff around with ProCharged and intercooled car under the hood. I get it but you won't regret it if you run big boost. On my own car I tried to nickle and dime a evac system all I did was increase my used parts inventory. I'm 55 and never even knocked on the door of "when I run out of stuff to do on the car". lol :TU:
belt only I tried using electric evac system did not work well enough. As far as using a motor like old style electric water pump to drive I don't think that will work. It draws more vacuum with the rpm of the motor. I think about about 10-12" inches of vacuum is about the max you want to run. You don't want to take all the oil mist out of the crank case or you'll starve the wrist pins I've been told.
Yes they work. A must on a boosted engine. Without one I would have oil leaks all over the place. Since I had manual steering, I put it where the pump was. The people that did not know better thought it was a power steering pump and I did not tell them any different.
I am running a Peterson oil pump setup on the race car. Anyone running that with a vacuum pump too? Cant see how I can get another belt hooked up there.
You may want to contact Steve Reynolds as he has engineered some niffty mandrels for others set-ups. Larry
Need to add a mandrel to your crank pulley (s). First and most importantly ratio as the diameter will be much smaller as you do not need to turn the crank case as fast as the factory accessories. Hard to say the one you need without knowing what you have now. The type I had fit inside of the BBC modified pulley I used on my BBB with a Procharger. Here is one Steve Reynolds made for Royden Hardcastle in Australia.
Around 9-10". I had 13-14" on a previous engine and that extra 4-5" would help on this one but I can't seem to get it that high. We smoke tested it and found a couple of minor leaks which we took care of but that got it up from 2-3" to 9-10". 70 runs on the motor so it shouldn't need rings.
Thanks Doug, I will take a pic of my setup and send to Steve and ask for his suggestion. I am thinking of this for my 494 swap.
