Pushing oil.
Sep 4, 2014 | 06:36 AM
#11
Here is a picture, not too good a shot.
The pump mounts off of the head and has the old school bracket like an alternator for tightening. The regulator is on the valve cover and then it vents to a vented catch can with all SS lines. It is a great setup that runs off of the tentioner pully (comes with a new pulley and belts).
The pump mounts off of the head and has the old school bracket like an alternator for tightening. The regulator is on the valve cover and then it vents to a vented catch can with all SS lines. It is a great setup that runs off of the tentioner pully (comes with a new pulley and belts).
Sep 5, 2014 | 10:34 AM
#12
Here is a picture, not too good a shot.
The pump mounts off of the head and has the old school bracket like an alternator for tightening. The regulator is on the valve cover and then it vents to a vented catch can with all SS lines. It is a great setup that runs off of the tentioner pully (comes with a new pulley and belts).
The pump mounts off of the head and has the old school bracket like an alternator for tightening. The regulator is on the valve cover and then it vents to a vented catch can with all SS lines. It is a great setup that runs off of the tentioner pully (comes with a new pulley and belts).
I read an article where they put one on an LME built LSX 454 and it only gained a few HP and lost a couple of ft-lbs on the engine dyno. http://www.chevyhardcore.com/tech-st...s-vacuum-pump/ So there doesn't seem to be a power advantage.
Besides -ve vs +ve crankcase pressure, the other difference I can see between just adequate venting and a vacuum pump would be establishing a ventilation path if drawing a vacuum on 1 valve cover, and allowing fresh air into the other, similar to the OE PCV system.
Last edited by DrX; Sep 5, 2014 at 10:39 AM.
Sep 5, 2014 | 05:05 PM
#13
So the pump didn't do anything for you?
I read an article where they put one on an LME built LSX 454 and it only gained a few HP and lost a couple of ft-lbs on the engine dyno. Dyno Tested: Big-Inch 454ci. LSx With GZ Motorsports Vacuum Pump - Chevy Hardcore So there doesn't seem to be a power advantage.
Besides -ve vs +ve crankcase pressure, the other difference I can see between just adequate venting and a vacuum pump would be establishing a ventilation path if drawing a vacuum on 1 valve cover, and allowing fresh air into the other, similar to the OE PCV system.
I read an article where they put one on an LME built LSX 454 and it only gained a few HP and lost a couple of ft-lbs on the engine dyno. Dyno Tested: Big-Inch 454ci. LSx With GZ Motorsports Vacuum Pump - Chevy Hardcore So there doesn't seem to be a power advantage.
Besides -ve vs +ve crankcase pressure, the other difference I can see between just adequate venting and a vacuum pump would be establishing a ventilation path if drawing a vacuum on 1 valve cover, and allowing fresh air into the other, similar to the OE PCV system.
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