915 vs 901 vs boxsterS - Opinions needed., pros/cons, difficulty moving to, etc... |
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915 vs 901 vs boxsterS - Opinions needed., pros/cons, difficulty moving to, etc... |
naro914 |
Jan 11 2012, 12:07 PM
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#21
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Losing my mind... Group: Members Posts: 2,476 Joined: 26-May 06 From: Charlotte, NC Member No.: 6,073 Region Association: South East States |
I'd like some opinions from the general peanut gallery. Is it worth the cost go to a 915 transmission over a 901? What is the benefit, if any? And, what's involved?
How about a Boxster S transmission? I've heard stories that a 915 is a pain to install, and doesn't every really shift well. I can't comment since I've never driven a 915 in a 914. But, with the bigger engine we now have, is it something I should be considering in the future? Being that I can get a complete 901 for cheap, and already own 3.... I know nothing about the Boxster S trans, other than a 6 speed with cable shifting would be very nice. thoughts, comments discussion? thanks |
rohar |
Jan 14 2012, 09:49 AM
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#22
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Senior Member Group: Members Posts: 924 Joined: 25-October 08 From: spokane Member No.: 9,685 Region Association: None |
But the deal killer for track guys would be availability of different ratios. The Spec. Boxster crowd don't change them (rules), so no one is doing much sourcing there. Maybe some other format does and has discovered someplace that is making different gear sets. The other element (unknown) is how the boxter transmission would do with more power pushing it. The Spec. Boxster guys are all less than 200rwhp. Longevity with the boxster transmissions is pretty good. Bill Pickering had over 6000 race miles on his before it broke. The boxster tranny is externally identical to the Audi FWD transmission so if you can bolt one up, you can bolt up the other. The Audi units are available in a huge array of factory gearing in order to handle everything from the high reving 1.8t (and even smaller engines) to the v6 diesel in europe. Not sure what the interchangeability of the internals between the porsche and auid boxes is though. |
rohar |
Jan 16 2012, 07:13 PM
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#23
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Senior Member Group: Members Posts: 924 Joined: 25-October 08 From: spokane Member No.: 9,685 Region Association: None |
But the deal killer for track guys would be availability of different ratios. The Spec. Boxster crowd don't change them (rules), so no one is doing much sourcing there. Maybe some other format does and has discovered someplace that is making different gear sets. The boxster tranny is externally identical to the Audi FWD transmission so if you can bolt one up, you can bolt up the other. The Audi units are available in a huge array of factory gearing in order to handle everything from the high reving 1.8t (and even smaller engines) to the v6 diesel in europe. Not sure what the interchangeability of the internals between the porsche and auid boxes is though. Just 'cause I couldn't leave it alone, I did verify the 96-97 boxsters used the ZF ZF5HP19FL transmission. The exact same ZF part number as the Audis/VWs from 95 to 2001ish so the internals would be interchangeable. Stock ratios for the VW/Audi units are all over the net. edit: Crap, that's an automatic. Nevermind. |
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