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-   -   HELP needed with my backdraft cobra!!! (http://www.clubcobra.com/forums/advertisers-forum/128467-help-needed-my-backdraft-cobra.html)

427fast 04-06-2014 04:02 PM

HELP needed with my backdraft cobra!!!
 
I drag race my backdraft cobra and I have a serious problem with the rear differential getting loose and breaking the grade 8 lower bolt that holds it in place. When it breaks we have to use a point chisel to remove the broke bolt. I am looking at the solid mounts that backdraft sells and going to switch them out to solid. I am afraid to use lock tite cause then I won't be able to remove the broke bolt. I have been tighting the bolts every time I race but it is not enough. Please I need some advise here. Thank you

Mark Brye 04-06-2014 04:23 PM

If my memory is correct the older cars had a 12mm bolt. They later went to a 14mm bolt. Do you know which you have?

Seems like a couple years ago I saw someone post about an upgrade for this. Was a kit that was used on the E36's that worked on our cars. Will see if I can find it.

427fast 04-06-2014 04:25 PM

I have he later 14 mm bolt My production number is #990

Mark Brye 04-06-2014 04:27 PM

http://www.clubcobra.com/forums/back...t-results.html

Try the link above.

427fast 04-06-2014 04:32 PM

Mine already has the 14 mm bolt. Will this kit help me more?

Mark Brye 04-06-2014 04:39 PM

The OP seemed to think it helped. I have never seen the kit in person or have any experience with it. Just thought I would post it as an option. I think there were a couple other people that used this. Try doing in search in the Backdraft section, I think this subject has been talked about a couple times.

427fast 04-06-2014 04:44 PM

Thank you

Cashburn 04-06-2014 09:06 PM

You need solid diff and cage mounts if you are dragging. What engine do you have? What tires? Sometimes a softer bolt is better as they are less brittle.

427fast 04-06-2014 09:17 PM

Small block 427 and 335 wide tires

427fast 04-06-2014 09:19 PM

Is the solid Differential mounts what you are pertaining to? Backdraft part. Backdraft Parts - Solid Diff Mountings - Performance Suspension - Suspension - Products

427fast 04-06-2014 09:21 PM

And is the cage you are talking about is it like this one Active Autowerke BMW Differential Support Bracket E36

Cashburn 04-07-2014 05:55 AM

Quote:

Originally Posted by 427fast (Post 1294318)
Is the solid Differential mounts what you are pertaining to? Backdraft part. Backdraft Parts - Solid Diff Mountings - Performance Suspension - Suspension - Products

Yes on these.

Cashburn 04-07-2014 05:57 AM

Quote:

Originally Posted by 427fast (Post 1294320)
And is the cage you are talking about is it like this one Active Autowerke BMW Differential Support Bracket E36

No on this. I am referring to these:

Rear Subframe Bushings/Mount Set - Turner Solid Race - E36, E36 M3 - Turner Motorsport

Or

Backdraft Parts - Solid Sub frame bushings - Performance Suspension - Suspension - Products


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