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Broke a 12 Bolt Moser

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Old Sep 21, 2004 | 12:23 PM
  #1  
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From: Ft. Lauderdale, FL
Unhappy Broke a 12 Bolt Moser

I Broke a SLP 12 Moser after 4,000 and 16 months

I went to the track and ran 3 runs, one spinning to 1.9 and two bogged to 2.1. After turning off the track (10 mph )at the end of third run, I notice a load clunck. I think I also heard it on the prior turn off as well but thought I ran over something. The car ran find straight so I drove it 80 miles home. I remove the cover today to fine metal laying in the bottom and 4 teeth broken off the driver side spider gear. I am running 315/35/17 Nittio's. I was launching between 2,500 and 3,500 RPM. I bought a 12 bolt so I would not brake the stocker. I am very surprised to break a 12 bolt. Have you heard of this being a problem with the 12 bolt? I haven't.

Should I just replace the spider gear set myself, and if so do I need to redail-in the Ring and pinion gears? Will I need to replace anything else? Or should I remove the rear and take it to the local drive line shop for repair.

What do you think?
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Old Sep 21, 2004 | 12:33 PM
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From: The Confederacy
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Damn, I hate to hear that. What spline posi are you running?
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Old Sep 21, 2004 | 01:16 PM
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33 spline, 1350 yoke
I only make 355 rear HP, but that is all it took with a 3,500 launch on Nittio's
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Old Sep 21, 2004 | 01:24 PM
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I've heared of 12 bolt spider gears breaking but at more like 500 RWHP I'm pretty suprised about 355 RWHP
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Old Sep 21, 2004 | 01:26 PM
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From: Jacksonville, FL
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i'd be pissed and yell at slp...people here launch at 5 grand with much more than your hp and do not break thier rear....i would say that something was wrong with yours....the stock 10 bolt prolly would have held up just the same as that
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