Using a 901 w/3.2-Any Problems? |
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Using a 901 w/3.2-Any Problems? |
ellisor3 |
Aug 26 2010, 02:55 PM
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#21
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HPWhore Group: Members Posts: 811 Joined: 23-October 08 From: Fleming Island, Florida Member No.: 9,683 Region Association: South East States |
I am about to install my 3.2 engine and it is being paired with the 901. I was wondering if the 901 need to be regeared or use heavier gears for this application or is the standard gearing fine?
Any other things that should be considered? It will be for street only. |
John |
Aug 26 2010, 08:58 PM
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#22
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member? what's a member? Group: Members Posts: 3,393 Joined: 30-January 04 From: Evansville, IN (SIRPCA) Member No.: 1,615 Region Association: None |
How you drive is the key to how long it will last.
My street 914 with a 3.2 should last a good long time. It isn't pounded on and it was fully rebuilt with a billet intermediate plate with new intermediate plate bearings. All the gears were inspected and was properly set up. Having said that, I have also torn up MANY 901 gearboxes with the track car (also a 3.2). Every failure we had was with 4th gear losing teeth. After each failure, I could really find no reason for the failures. The bearings were always good, the races tight in their bores, but investigating the cracks in the roots of the gears showed evidence of fatigue failure. It is assumed that the shafts could have been bending allowing the mesh of the gears to change but this was never confirmed. It was also assumed that heat may have played into the general scheme. The broken gearboxe(s) were in a DE track only car with 2 advanced drivers/instructors. The failures started occuring after we both had approximately 15 years experience with the car. We went with a 915 box (with the WEVO 915 reinforcement bits) and have had no other failures. Like I mentioned in the beginning, it depends on how the car is used. I believe that they will survive for a long time on the street, but for heavy use (track use), something else needs to be considered (at least for long term use). just my $0.02 |
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