Ground clearance, deep sumps.

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shambly
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Joined: Tue Oct 07, 2003 2:07 am

Ground clearance, deep sumps.

Post 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
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Wally
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Post 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
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303

"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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Kelley
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Post by Kelley »

Nice pic :D
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shambly
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Post 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
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Wally
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Post 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)
T4T: 2,4ltr Type 4 Turbo engine, 10.58 1/4 mi in a streetlegal 1303

"Mine isn't turbo'd to make a slow engine fast, but to make a fast engine insane" - Chip Birks
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shambly
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Joined: Tue Oct 07, 2003 2:07 am

Post by shambly »

Yes, shock mountings are 4", so that would make the sump then about 5mm below the suspension damper mounts.

Thanks Walter
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