Dry Sump SEAC

[The Hatter]

What's the deal with dry sumps; how many cars have it?

[rev-erend]

Main advantage is you can mount the engine lower for a better centre of gravity for better cornering and
another is it allows better oil control under heavy cornering (with slicks).

Don't think there are any wedges with dry sump.

From memory - Jeff Strathams factory SEAC racer does not have it and Steve Heaths 530 purple shed
also does not have it but I stand to be corrected.

[aderut]

I'm fairly sure that it was never fitted to a SEAC ex-factory, but some-one may have thought it a good idea as a mod to get a few more BHP, but surely there were cheaper was to get more power without the expense of the dry sump.

Edited by aderut on Wednesday 9th March 10:24

[TVRleigh_BBWR]

rev-erend said:

Main advantage is you can mount the engine lower for a better centre of gravity for better cornering and
another is it allows better oil control under heavy cornering (with slicks).

Don't think there are any wedges with dry sump.

From memory - Jeff Strathams factory SEAC racer does not have it and Steve Heaths 530 purple shed
also does not have it but I stand to be corrected.

I thought Jeff's car did, and has an oil tank in the boot, but I could be wrong.

I'm not even running a baffled sump, and getting 1.4G's with slicks, and not had a problem.

[Campbell]

Im sure the racing SEAC has a dry sump system and the tank in the boot is for the oil for the diff with the rad in the riht had arch and a pump running of the right hand drive shaft.
Im sute there is a few wedges out there with dry sump systems, the only prob is the pump goes where the power steering pump is. Still a cool idea.
Its not like the crank on the rv8 splashes throuht the oil.
Cambelt

[jeff m]

The advantage of dry sump is oil capacity and oil temp.
9 - 12 litres over 4.5.
Done properly there are valves that decide where the oil comes from from 'til it's all up to temp (and keeping it there). There is a bit more to it than slapping on an extra pump.
Lots of laps, you have a better chance of actually finishing.

My first oil change on a dry sump.
I put the small container under the dry sump, the other under the tank.
You can guess the result.

I doubt Steve Heath's car would gain much as he sprints it. The loss from extra weight and running a second pump would probably outweigh any gain he could get from placing the tank in a place to get get better weight distribution.

No doubt the next post will be S.H. saying he has a dry sump

[cuneus]

For the SEAC racer

Diff oil tank in boot with temp take off and gauge in cockpit


Nose cone removed showing from left to right: oil cooler, alloy radiator and oil tank


Dry sump oil pump

[TVRleigh_BBWR]

jeff m said:

The advantage of dry sump is oil capacity and oil temp.
9 - 12 litres over 4.5.
Done properly there are valves that decide where the oil comes from from 'til it's all up to temp (and keeping it there). There is a bit more to it than slapping on an extra pump.
Lots of laps, you have a better chance of actually finishing.

This is true, The oil in my racer does get quite hot, esp before I put the oil cooler on.
We only do 20 minutes, but any more and I think I'd be getting problems with oil, temperatures in the engine, Gearbox and Diff, esp. now I'm getting used to the car and pushing a lot harder then when I 1st started.

On a road car though your never going to be able to push it as hard and for as long.

[rev-erend]

Wildcat do a nice front end - with a better flowing water pump, dry sump, better crank pulley (oil damper not rubber)..

[grahamw48]

I'm sure SH said his had a dry sump.

This SEAC is turning out to be a very interesting car.

[The Hatter]

It sure is...



Factory fit?

[cuneus]

LPG















































only joking

[The Hatter]

The tank in the boot looks the same as the tank at the front of the race car; is it a common design or TVR specific?

[cuneus]

The Hatter said:

The tank in the boot looks the same as the tank at the front of the race car; is it a common design or TVR specific?

The one on the race car is not original

What is the function of the one in the boot ?

[The Hatter]

It's definately a dry sump system, it's connected through the pump via a cooler into the rocker cover.

I assume the tank's in the back for weight distribution?

I'm starting to think that this is a race car; I agree there's no point in dry sumping a road car - unless it's to keep the engine cool?

[Transmitter Man]

The Tuscan race cars ran a dry sump system I do believe.

Here's a picture of the John Eales dry sump system: http://forum.britishv8.org/read.php?6,11425

As Rev said it would allow one to lower the engine.

Also need to move our wedge engines back if you compare the gap between it and the bulkhead and that of a Griff!

Phil
420 SEAC

[combine]

Stainless chassis , dry sump , possible racer .... how could anyone manage to treat such an iconic rare Tvr in such a way , answers to wedgepages forthwith !

[barrington]

maybe it had all the bits the race car had if it was used as a press car ?

[TVRleigh_BBWR]

combine said:

Stainless chassis , dry sump , possible racer .... how could anyone manage to treat such an iconic rare Tvr in such a way , answers to wedgepages forthwith !

Does seem such a shame to treat such a rare car this way esp if it is one of the missing racers
Also it had a coil over conversion, and adjustable front lower suspension.

OT
You can't move the engine further back due to the exhaust design, not because of the sump, if you fit griff style over the top headers you have move the engine a lot further back, I did this to my racer.

[adam quantrill]

combine said:

Stainless chassis , dry sump , possible racer .... how could anyone manage to treat such an iconic rare Tvr in such a way , answers to wedgepages forthwith !

Stainless chassis - won't rust when parked in a field.

Leaky roof and consequent fishpond in the footwells - so what - it won't rust.

The leather will buff up with a bit of feed.

Looks good to me....