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| BMXerror |
 Dec 19 2009, 12:46 PM
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Senior Member  Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842  |
Are there lower final drive ratios available for a 901 trans?... Yes, I said lower. (IMG:style_emoticons/default/biggrin.gif)
Mark D. |
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| ME733 |
Dec 19 2009, 12:56 PM
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Senior Member Group: Members Posts: 842 Joined: 25-June 08 From: Atlanta Ga. Member No.: 9,209 Region Association: South East States |
(IMG:style_emoticons/default/popcorn[1].gif) ... only one I ever heard about is a 7/34 ratio and I think hard to find...stock is 7/31. (IMG:style_emoticons/default/popcorn[1].gif) murray
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| BMXerror |
Dec 19 2009, 01:08 PM
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#3
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Senior Member Group: Members Posts: 1,705 Joined: 8-April 06 From: Hesperia Ca Member No.: 5,842 |
QUOTE(ME733 @ Dec 19 2009, 10:56 AM)  (IMG:style_emoticons/default/popcorn[1].gif) ... only one I ever heard about is a 7/34 ratio and I think hard to find...stock is 7/31. (IMG:style_emoticons/default/popcorn[1].gif) murray (IMG:style_emoticons/default/dry.gif) K, thanks. I'm in the planning stages of a high reving engine, and I'm running into gearing problems. Mark D. |
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| ArtechnikA |
Dec 19 2009, 01:42 PM
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#4
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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 |
QUOTE(BMXerror @ Dec 19 2009, 02:08 PM) QUOTE ...only one I ever heard about is a 7/34 ratio and I think hard to find... ...I'm in the planning stages of a high reving engine, and I'm running into gearing problems. You have my attention... 914/6GT made peak power (~220) at 8000 and used the 7:31 ratio. You're looking to spin something faster than that? Well - 'For Sporting Purposes' references a 6:32 (5.333:1) R&P "for hillclimb cars only." I've heard of these before but don't recall seeing one 'in the wild.' I've never heard of a 7:34... I don't see a part number for a 6:32 in the ETKA but as they were never fitted to production cars this is not surprising - Porsche Motorsports only probably. If anyone has seen one of these live it'd probably be the gang at CarQuip in Colorado or Otto's. The 905 flavors ran an even taller R&P at 7:27 due to the torque multiplication effect of the torque convertor. So you can go taller with production parts but shorter is hard. (Still not sure what you're turning faster than 8000 rpm but have fun with it !) |
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Posts in this topic
BMXerror Easy 901 question Dec 19 2009, 12:46 PM
r_towle Check with Carquip in Colorado.
He is frequently o... Dec 19 2009, 04:08 PM
ArtechnikA
Check with Carquip in Colorado.
Call Carquip afte... Dec 19 2009, 04:14 PM r_towle apparently there is an Echo in here.
Rich Dec 19 2009, 04:38 PM 904svo There was 3 R/P in the 901 type 7:31, 8:31, and 7... Dec 19 2009, 06:10 PM ArtechnikA
There was 3 R/P in the 901 type 7:31, 8:31, and ... Dec 19 2009, 08:17 PM Krieger914 How about smaller wheels? Dec 19 2009, 08:57 PM BMXerror Wow. More input than I usually get on the tech que... Dec 19 2009, 08:58 PM davep 8:31 is a 915 R&P
The sporto diff is smaller t... Dec 20 2009, 06:32 AM Racer Chris The only short R&P I've ever heard of bein... Dec 20 2009, 06:59 AM |
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