Boost's Performance Attempt - Page 67 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 05-15-2007, 10:17 AM   #661
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Ford and Dodges... Ok.. back to my actual thread..lol.

This car is going to make the track.
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Old 05-15-2007, 10:33 AM   #662
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*high five*

diff destroyers unite!
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Old 05-15-2007, 10:54 AM   #663
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Glad to hear the problem was found and you'll have the trans back in time for the track and a new pb
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Old 05-15-2007, 01:20 PM   #664
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The transmission is in the back of Gonneville'* truck.

Did I mention thank you to everyone involved for all their hard work and assistance... Ok..I repeat myself.
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Old 05-15-2007, 02:15 PM   #665
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when are we gonna find out why the gen3 LSD failed?
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Old 05-15-2007, 02:25 PM   #666
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I'll see if we can get Tim in to reply on that one. I don't understand much about it beside..dual stripes..
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Old 05-15-2007, 07:11 PM   #667
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Good to hear the problem is solved.

Not so good to hear that it was a new Lsd that grenaded. Bad advertisement. :(

Understandable though, knowing how you drive Bill.
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Old 05-15-2007, 08:14 PM   #668
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One of us needs to be the leader Paul. Don't worry. I'll try and keep the rubber chunks off your car.
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Old 05-15-2007, 09:34 PM   #669
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There are two pins in the pinion shaft that hold it in place. On a stock differential failure one of the pins shear in half and allow the pinion shaft to walk outwards and eventually fail (usually due to snapping). The pinion shaft in our Gen 3 LSD is much stronger and is much harder to snap.

In Bill'* case when the pin sheared and allowed the pinion shaft to walk a little instead of the pinion shaft breaking it pushed one of the bearing races outward which made contact with inside of the differentail housing cover and caused it to scrape which was what all the shavings in the pan were. Eventually without the race this caused excessive play in the pinion shaft which caused the roller bearing to fail. The pins in the pan are from the roller bearing the pinion shaft sits on.

It is regrettable that this happened and there isnt much we can do about the two pin design GM uses. We covered it under warranty and even moved a few scheduled cars around to get Bill'* tranny to him in time for this weekend.

Everyone attending NEBF should buy him a drink for the month (or 2?) he has been having
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Old 05-15-2007, 09:57 PM   #670
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Well done to everyone at INTENSE. And thank you for the explanation and information, Todd.

This is one car we want to see at the lights, fully tuned or not.
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