Dry sump kit

[Error404]

Yes I agree with your comments and if I could have have enough interest sumps could have been casted for this purpose, or even CNCed, but dont forget I had an order for one right kit as per the pictures (customer wants to retain AC) and two left hand, and one of them drop out half way through.
So do you think the cost for casting just 3 (in the end 2) sumps? So I had to go with the modified existing one. No choice unless you want to pay huge sums and economic situation doesnt help either.

BTW dry sumping is not only for lowering the centre of gravity, old Grp B car run dry sumps and probably in the forest were a lot higher on suspension set ups then standard

Wasn't trying to critique your design mate, wasn't sure i fully understood the reasons behind fitting it that was all
totally understand its a massive undertaking and total respect for making it happen I guess i'm surprised people want to go to these lengths (and keep A/C ) - must be some hardcore machinery you're workng on for them

[aelred]

Wasn't trying to critique your design mate, wasn't sure i fully understood the reasons behind fitting it that was all
totally understand its a massive undertaking and total respect for making it happen I guess i'm surprised people want to go to these lengths (and keep A/C ) - must be some hardcore machinery you're workng on for them

I did not take it as criticism, dont worry. Any comment is welcome.

[volcano rs]

looks good aelred well done

[macspring]

Clarfiaction - Just to be sure to be sure !

Agreed, mine was an observation, not a criticism.

As you say one man's meat is another man's poison.

[Jamo]

Jesus, pure porn excellent work!

[Rusty]

That's taken a lot of work, nice one

Quite amusing that your customer wants to retain the AC, gain power form a dry sump, use it to pump some refrigerant round the car, free AC!

[anton]

brilliant work there aelred, will you be selling this to anyone? what sort of cost?
there seems to mixed views as to the performance gain with dry sumps, apart from the obvious better lubrication, i have heard that the larger pumps are more efficient resulting in up to 10% power increase, is this true? have you seen any increase?? assuming this engine is fitted now?

Ant

[Flat on my back]

.

Its not about power increases, but reducing losses...of the crank rotating in litres of oil.

The real benefit is safety...minimal risk of oil starvation during hard cornering and accel/decel.

If your building a 'full on' track/drag machine this is the way to go.

Stunning work.

[aelred]

As Carlos says it about reducing loses. A drysump kit will deliver constant supply of oil under extreme conditions ie: on long hard fast cornering. I observed as a passenger on a S2 with normal good running pressure of 5 bar the oil pressure dropped as much as 2 bars, (driver probably does not notice this as he is highly concentrating on his driving), this is caused by the cornering forces throwing the oil to the side of the engine and making the oil pick up pipe suck air, also the oil and pump will be airated due to the crank hitting the oil and making the oil like if it was in a whisk, and the higher the revs the higher the whisking action. There is also an amount of drag as the crank is hitting the oil. Also the oil as it is stored in a separate tank and cooled via an oil coooler will remove more heat from the engine than in a wet sump with oil cooler. The pump can be set to a pressure as required as it is adjustable via the pressure relief valve. The pump will deliver more oil then standard per minute. Also you can rev the engine higher than with standard pump, plus simple mathematics more revs= more power (provided everything is up to the job)

So to conclude:
Less drag on crank
Removes heat from engine
More safe
Less or no air due to the whisking action
Maybe able to distribute to some degree weight
Larger oil capacity
No breather system required
Adjustability to the oil pressure as required
More revs=more power

Biggest drawback:
The COST

I hope this answer some of the question that people have and are not fully aware of the benefits to dry sumping, of course this applies to a big high revving BHP engine, as a road engine the benefits do not justify the cost.

My wife just read this and she fully understood the concept of dry sumping now!

[S2central.net]

For some reason I thought dry sumps ran with an electric pump to further save on drivetrain loss (versus a belt driven pulley off the crank). Nice looking bit of kit though !

Paul

[quattro]

Im toying with the idea of a dry sump and im only running a street/track day car, i have moticed the oil pressure drop and have had very noisy tappets after a harsh run, i ubderstand the loss of power through the splashing effect, maby we could get a dyno of the losses before & after fitting of the sump or is this not possibe?

[DJ-ROY]

This is so cool specialy for trackdays when you corner really hard:mischeif:

GREAT work ...

[aelred]

Electric pump

For some reason I thought dry sumps ran with an electric pump to further save on drivetrain loss (versus a belt driven pulley off the crank). Nice looking bit of kit though !

Paul

There are electric pumps to do this job, but oil pressure and flow rates are nowhere near as good as a mechanical pump that I know of.

[Ski]

Thanks for the explination Aelred that really does make sense. 1 question however, why is it called a "Dry" sump when there is nothing dry about it?

[aelred]

Thanks for the explination Aelred that really does make sense. 1 question however, why is it called a "Dry" sump when there is nothing dry about it?

As the oil it is taken away to a remote reservoir continuously, there is no oil in the sump, there is no deep stick. Wet sump is when oil is kept in the sump at all time.
Yes there will be residue of oil in the sump per say it is dry.