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Ground clearance, deep sumps.

Posted: Sat Jul 15, 2006 9:13 am
by shambly
Jake,

How much ground clearance would I loose with one of your deep sumps?

Currently the sump sits 5" off the ground (lowest point on case 4 3/4", exhaust 5 1/4") and i'm concerned about loosing ground clearance for our speed hump inhabited local roads (but equally concerned about loosing oil pressure on a track).

My current thought is a 2 qt accusump with an EPC (20-25psi version?) plus a tuna can or deep-sump depending on which is less prone.

I think on the Le Mans circuit I suffered with both cornering g-force (accelerating around sweeping left hander) and pumping the sump dry (changing up from 2nd gear to 3rd gear at 6000rpm, coming out of the S's onto the grandstand straight :shock: )

Are the BAS "tuna-cans" sold in Europe the same as those refered to on STF?

Thanks,

Simon

Posted: Sat Jul 15, 2006 9:29 am
by Wally
I have a BAS 'tunacan', a 914 sump-plate (perforated under the pushrod tube exits) and a stock oil pump and had no issues with oil pressure after my track day last thursday:

Image

And believe me, we were flying and exiting tight corners in second gear at 6200 to third :D

Walter

Posted: Sat Jul 15, 2006 9:50 am
by Kelley
Nice pic :D

Posted: Sat Jul 15, 2006 9:55 am
by shambly
Wally wrote:I have a BAS 'tunacan', a 914 sump-plate (perforated under the pushrod tube exits) and a stock oil pump and had no issues with oil pressure after my track day last thursday:

And believe me, we were flying and exiting tight corners in second gear at 6200 to third :D

Walter
Walter,

Nice picture! How deep is the tunacan and how far off the ground is it when installed in your car?

Thanks,

Simon

Posted: Sat Jul 15, 2006 10:18 am
by Wally
Its 3 cm's lower on the sump (1 inch = 2.5 cm) and you will never hit the ground with that. Mostly also because it is rather close to the shock mountings (closest to the ground normally) :wink:

The even nicer ones are made from alu and are ribbed for a tad extra bit of oil cooling (Remmele and Gerd Weiser e.a. IIRC)

Posted: Sat Jul 15, 2006 10:33 am
by shambly
Yes, shock mountings are 4", so that would make the sump then about 5mm below the suspension damper mounts.

Thanks Walter