Rebel_Heart

What are the benefits of running dry sump? I have spoken to a few people that claim increased hp because of the lack of having to turn through the oil. Does anyone else have opinions? Is this something that makes sense for more speed? Cost prohibitive?

Iggy

A dry sump system is the wawy to go....if you can afford it.
The pan, pump(s), catch tank, lines, cooler, etc are costly.

Yes, it does offer an increase in HP.
As oil drains back to the pan and comes out through the bearings it tends to wrap itself around the crankshaft. This blob of oil adds weight and will drop HP. A dry sump system, with the proper windage tray and crank scraper will control it. With litte or no oil in the pan the crank is free to spin.
The oil being held in a seperate container runs cooler and gets time to de-foam before being pumped back intom the engine.

stevesxm

the object of the drysump is to keep the oil in one place in hi g situations. it is true that there is some power to be gained from not having the oil in the pan but that is offset by the parasitic drag of the belts and drives and is not usually the motivation for doing it.

expensive is a relative term. for my money if you are making less than 600 hp and not jumping and flying the boat all day, then it is probably not required... but having said that, from the stand point of effeciency and pure function, a dry sump is a better oil system across the board by a lot.

there are those here that will jump up and down and yell about an extra belt and "what if it falls off" and such.... and they are correct to a degree... but i would maintain that if you look after THAT component in the same way that you look after the rest you will be fine and, in practice, these systems run every day for thousands of miles on race cars under infinitely worse conditions all the time without failure. it is a well proven and highly deleloped off the shelf system.

my boat has 502 mags mpis. wet sump. and they work fine as do tens of thousands of others. if i had them out and rebuilt them, i would and will drysump them . if i had one of these monster blower motors that lots of folks here have, i wouldn't even put the key in the ignition w/out a proper drysump... but thats just me.

installation and system design and layout are not "plug and play" it takes some significant knowledge and skill to do it... and some problems occur when those individuals lacking either of those do a poor job of it... but i think it is the best way and money well spent.

PatriYacht

I think I'll use a pan and Titan pump from these guys on my next engines. For now a Dooley pan, scraper, windage tray and Melling hv pump are getting the job done. http://www.billetfab.com/index.htm

stevesxm

well........ maybe. and this is what i refering to. it takes a lot more than six axis nc mill to make this stuff. i looked at that web site and it has a few pictures and very very little hard data.

there are a couple of companies that have been making dry sump pumps and kits since oil was invented. weaver bros , peterson, barnes.... moroso as a last resort...

when it comes time for mine, ill do a couple of things...

1) ill find out what the winston cup guys are running these days

2) ill call THOSE guys...

3) ill call weaver bros and see what they say.

the guys on your web site may very well be wonderfull.... but ill stick with the guys who make the pumps for the penskes, roush's and hendricks of the world.

2112

As a compromise, I run an Aviaid external pump wet sump. Not all the benefits of a dry sump but I did not have all the room to mount tanks etc. The advantages are a serviceable pump outside the sump and 16 qt oil capacity in a S.S. stef's pan under the blocks.

Pressure is adjustable BTW and the belts are a none issue but it was easier to plumb than a dry sump.

I considered a Titan pump before going this route.

Rebel_Heart

Any ideas on cost? I only have a couple of 540 NAs - 710 hp. So this might be a little too expensive for the benefits in my case?

2112

If you are asking me, I think it was about $2K per engine including the custom made stainless pans. Chevy pans are way less $$.

MOBILEMERCMAN

Nobody mentioned rpm's. If your motor operates at or below 5800 rpm range a conventional oiling system can do the job. If your motor is designed to operate at 6800 or more the dry sump system becomes necessary.
Jim

2112

My rev limiter is set at 6500, starts kicking in a little before that.