Drysump or wetsump, street and trackday use.
 

Any real advantage going to drysump over wetsump 3.5 quart (3.3 liters) oilsump with other normal parts?

Only problem i am thinking that i need smaller pulley, even if i will probably use GWD porsche fan shroud on a 2789cc type 1 engine.


Thinking these parts:


Drysump:

-Thorsten pieper / Udo Becker 38/26 geared singlestage pump

-10 liter oiltank installed under rear window

-An10 lines

-Front oilcooler with mocal thermostat



Wetsump:


-Shadeck 30mm pump

-CSP oilpressure valve cover

-Berg 3,5 quart or 4 quart oilsump.

-An10 lines

-Front oilcooler with mocal thermostat


I am planning to do street and occasional trackday and dragstrip use.

Well, the big advantages for the drysump system are increased ground clearance and a virtual guarantee of no oil starvation. Those two alone are enough that I'll DrySump any of my future street cars that I intend to drive 'hard' or sporting.

I'm not sure of the price on the Udo Becker DS Pump, but one worth looking at heavily is the Stateside Tuning pump. The pump is an updated design based on the original Salzburg dry sump pump. It will clear a stock sized crank pulley, so virtually any pulley you want to use is no problem. Gears are larger than the original factory pump - 2 x 30mm on the engine and 3 x 26mm on the scavenge, the top side has more clearance to aid in fitting the pulley belt, the case scavenge union is set slightly lower & longer than the original works Salzburg pump to give more clearance to a standard type silencer box. Unions threads are 5/8" NPT.

http://cal-look.no/lounge/index.php?...ch=60611;image

http://cal-look.no/lounge/index.php?...ch=60613;image

FWIW, I'm running -8AN lines with no issues what-so-ever.

-Dave

Yes, thats true, that there is more ground clearance, but so far it hasnt been problem. Oil starvation is in my mind when i am thinking the oilsystem.


Stateside tuning pump sounds great, where can i find price and better pictures?

At this picture is original salzburg rally beetle pump:

http://3.bp.blogspot.com/_tt6adL4f9_...R/Oil+Pump.jpg

=> dry-sump

Live with the disadvantages, you really need it imo, especially beneficial for larger volume engines (more windage).

Oh, and 6 liter tank is really more then enough already.

Alex,

That orange-backed photo is the original Salzburg pump. The Stateside Tuning pump wasn't ready when I built my car, and while the Bug Pack one has been flawless the advantage of a stock sized pulley shouldn't be overlooked!

http://www.statesidetuning.co.uk/home.htm They are very good with email.

Since you're in Finland, you should also contact Juhani Jyränkö of http://www.kuplapaja.com/. These guys build some incredible cars, and they've got plenty of dry sump experience. They may not be close, but share your flag ;)

-Dave

I used a 356 top pulley and that brought my ratio to a very reasonable 1.3:1 which was enough for that engine to cool the heads (CHT).

All 911 engines are dry-sump from the factory...
They are also shuffle pinned, use aluminium cylinders and..and... :rolleyes:
Just look closely what Porsche did and you go a long way in making a strong and reliable engine ;)

Stateside pump looks nice, but somewhat reason i dont like three bolt attachment to the case, well at least it looks like so?


I have decided to put porsche shroud from GWD, best result may be with 145mm pulley, drysump pulley is around 133mm. Is there smaller pulley for 964/993 fan?

Yes, all 911 from 1963 are drysumped, and most over 25hp per cylinder have alu cylinders :)

The stateside pump photos aren't showing the "in-case" first stage. I would expect that to be four bolt as per the old Salzburg pump.

-Dave