901 transmission cooler, Can it be done on the cheap? |
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901 transmission cooler, Can it be done on the cheap? |
bondo |
Aug 10 2005, 01:15 PM
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#1
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Practicing my perpendicular parking Group: Members Posts: 4,277 Joined: 19-April 03 From: Los Osos, CA Member No.: 587 Region Association: Central California |
I have found small oil coolers with a fan for $100, but the electric pumps are expensive. My plan is to either find a cheap electric pump, or try and use the ring gear as a pump. The tricky part about the second option is it's hard to test. Can a cheap fuel pump be used to pump gear oil?
The intent here is to cool the oil and send it to the upper bearings so my 901 lasts behind a V8. |
ArtechnikA |
Aug 10 2005, 02:35 PM
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#2
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
fuel isn't 85W90 viscosity, and it doesn't get 250F. the heat is what kills most pumps tried in this application. RacerPartsWholesale has a Mocal electric pump for this purpose for about $185,
trying to run the pump from the output side of the transmission means you're tapping "after-tax" power. 901's never had factory oil coolers, but 915's did - two kinds. early ones (RS/RSR) lived in the tailcone but i don't recall which shaft they were driven from. later ones are in the side cover and driven by an output flange. this topic is covered in Anderson's 911 Handbook, BTW. they show a Tilton pump. i've heard that the Jabsco "water puppy" pump works, at least for a while. maybe you could just use something like a power steering pump, driven by an accessory belt... |
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