3.6L + 901 transaxle?, Is this a recipe for disaster? |
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3.6L + 901 transaxle?, Is this a recipe for disaster? |
Hydra. |
Sep 18 2012, 12:11 PM
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#1
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Member Group: Members Posts: 59 Joined: 23-July 05 From: www.hydraperformance.com Member No.: 4,457 Region Association: None |
I'm seriously contemplating going with a 3.6L 964 motor for my 914, but I'd like to keep the existing 901 transaxle. I understand that this doesn't leave much in the way of a safety factor, but what can be done to suitably strengthen the 901? Is it absolutely necessary to lock out 1st gear, or would something like an Albins 2.400 1st gear, along with a billet sideplate help out? I understand the alternative is to go with a 915-based setup, but if a 901 can be made to work satisfactorily then I would rather do that...
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pcar916 |
Sep 21 2012, 11:06 AM
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#2
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Is that a Lola? Group: Members Posts: 1,523 Joined: 2-June 05 From: Little Rock, AR Member No.: 4,188 Region Association: None |
I'm still running a 901 since 1994 and have had very few problems... two in fact, a worn spider/slider pair and more recently, a broken pinion. The worn spider was my fault and it showed me I wasn't pushing the clutch all the way in during shifts from 4th to 5th over a very long time. I have no idea about the pinion but it was the original R&P from '74 and I think it just got tired of the horsepower.
I also have three 915's. Two are mag-case 7:31's and an '84 which is 8:31. I still haven't committed to the 915 project because the 901 is useable to this day. My thinking on 915 pro's and cons is something like this. 1. The LSD for the 914 fits the early 915 (dimensionally) so I can transfer it to the 915 box. I ran an open diff for many years but now won't go back. 2. The 915 is heavier whether it's a mag-case or not 3. I'm have to modify the flywheel/clutch and shift system if/when I convert 4. If I don't invert it, I still have to remove the gear cluster to get the pinion out of the way if I want to make changes or do maintenance (i.e. clutches) to the LSD. 5. If I invert it, the diff maintenance is easier but I will have a non-optimal axle deflection... creates a "some amount" more heat and the associated hp loss. Don't know how much that is but it's there. Realistically not a deal breaker though. 6. The lubrication and venting will have to be changed but that's not tough. 7. When I do this I'll invert the 915. Conclusion: The 915 is a VERY cool (fun) project and I'll get to it because it'll be a lot of fun. But if the 901 continues to be a solid choice that's all it is. Fun Hmmm... another tub? (IMG:style_emoticons/default/beerchug.gif) |
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