Outer Limits 4x4 Board

Hey just looking around for a relatively cheap Dry Sump system for a Chev big block. Any links etc on where to get one would be helpful! Thanks

have you thought about just running an oil accumulator? they are $300ish and work pretty well also. or if you just want a dry sump, check out rocket industries.

www.jegs.com
www.summitracing.com

There is no such thing as a "relatively cheap" dry sump system.

May I ask why you want one?

chimpboy wrote:May I ask why you want one?

cause hes got a wet sump

Shadow wrote:

chimpboy wrote:May I ask why you want one?

cause hes got a wet sump

Captain obvious

A few years ago, we supplied a tripple hydraulic gear pump to a local race engine builder for a dry sump system. It was to be fitted to a Leyland P76 engine in a openwheeler/hillclimb car. No comercially built system was available for this engine.

Two sections of the pump were to scavange the sump, the third was the engine pressure feed. They mad everything to suit, and it would not have been a cheap exercise. Was worth about 30HP on the dyno tho.

Yeh I have seen a few shop and home made systems that were on the cheap side of a dry sump system but they were constantly having problems with the pump seals etc, I think they used holden oil pump gears in a alloy housing run off the front of the alternator to scavenge the oil! I know it is not going to be cheap as far a few hundred $ wise, just looking for the cheapest option available! Chimpboy, I need it to cut a few inches off the height of the motor, so it will fit in with a lot less hassle and maybe even sit lower in the chassis.

The obvious choice for a cheapish system would be a 2nd hand one out the motor racing industy but the problems that are likely is damage to at least one of the pump sections. It's common on the sprintcar engines which experience a blow up to need a new dry sump pump as the pump impeller/housings invariably get some junk through them damaging them to some extent. They come on the market but no sprintcar guy will risk using a potentially damaged pump on a $50k-$70k engine.
When their engines are dyno'd they are actually dyno'd with the pump and tank assembly they intend to race with.
Dry sump tanks are another issue. How much space is available? Do I need a tall and small diameter or short and fat one? What oil capacity do I need etc.
I've been involved in the fabrication side of dry sump tanks and it's a very labour intensive exercise and hence also very expensive if you can't use "off the shelf" components.
The dry sump tank/breather/water overflow pic below is one I made for a racing Dodge Viper, where it is positioned was the only available space, we had to maximise diameter and minimise height. The sump was a full billet item and the pump was custom too. From memory it was a $10K+ bill just for going to dry sump, but it stopped the engine starving for oil at the sweeper on Phillip Island.
Regards Andrew.

Cheap dry-sump components/setups occasionally come up on ebay if you have time to look. Also include the US as these stuff is a lot more common over there then it is just a matter of freight. Just remember that you don't know the condition of the internals of the pump until you look at it yourself.

Otherwise look for items out of the race scene. Magazines, web forums are the best place to look.

- David.

awill4x4 wrote:The obvious choice for a cheapish system would be a 2nd hand one out the motor racing industy but the problems that are likely is damage to at least one of the pump sections. It's common on the sprintcar engines which experience a blow up to need a new dry sump pump as the pump impeller/housings invariably get some junk through them damaging them to some extent. They come on the market but no sprintcar guy will risk using a potentially damaged pump on a $50k-$70k engine.
When their engines are dyno'd they are actually dyno'd with the pump and tank assembly they intend to race with.
Dry sump tanks are another issue. How much space is available? Do I need a tall and small diameter or short and fat one? What oil capacity do I need etc.
I've been involved in the fabrication side of dry sump tanks and it's a very labour intensive exercise and hence also very expensive if you can't use "off the shelf" components.
The dry sump tank/breather/water overflow pic below is one I made for a racing Dodge Viper, where it is positioned was the only available space, we had to maximise diameter and minimise height. The sump was a full billet item and the pump was custom too. From memory it was a $10K+ bill just for going to dry sump, but it stopped the engine starving for oil at the sweeper on Phillip Island.
Regards Andrew.

Pulling 5g's sideways in a big block chev'd 40 series. Now this i want to see!!!