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Old Mar 4, 2018 | 04:49 PM
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xr4x4ti
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Default Cosworth rear Stub Axle failure

Hello,

Has anybody ever heard of a rear stub axle failure? Have pictures?

I have a Turbo V8 converted American XR4Ti that I have been drag racing and last year I broke an OEM 2wd Cossie axle. I replaced the axles with upgraded unit made out of 300M, that should no longer be an issue. I already have an 8.8 diff in the back, so that is also not an issue. But I am worried about the 27 spline stub axle that goes through the rear hub. I had mine X-ray analysed to determine the material and they are just a 1040/1050 steel. Not a Cr-Mo. Based on my calculations if I were to put some drag radials in the back, they won't handle it. Yet, I can't find a single example of a broken one on the web.

I know there are a few low 10 sec to 9 sec Cossie's on Youtube. What do they run? Are they all converted to solid axles?

Video of my practice launch.


I have since gone to the track and went 7.06 @ 105.5mph in the 1/8th. That should be go for a mid to high 10's in the 1/4.

Thanks in advance,
Tim
XR4X4Ti
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