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Cracked push rod at the rear subframe bushing


nbristow01

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Back in China until Xmas.

Great that some of you guys met up with John. He's a great guy, and should be in the Guiness Book of Records for the longest 2002 refurb!!

Only sorry I missed him when he was in SAT when I was home.

Factory Parts Book translates it as a Thrust Rod. FWIW

Pushrod??

Repair and replacement is covered in factory manual and Haynes. Cracked link /tension strap is easily replaced with used part.

RealOEM calls it a pushrod...see attached pic

12 PUSH ROD 2 33333428125 $35.45

I do not see where it is called a link/tension strap as you stated. Is that the correct name for this part?

Thanks Les for the correct nomenclature of that part. I had my Thrust Rod welded this AM. Are you back in the US? A bunch of us got together with John (AKA HARV on FAQ) and we talked about where you may be now

Les

'74 '02 - Jade Touring (RHD)

'76 '02 - Delk's "Da Beater"

FAQ Member #17

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  • 2 months later...
They are effectively limiting straps for side to side subframe movement. Its understandable to see them buckle and crack that way, especially if your racing/aggressively driving on old worn out subframe bushing.

As for replacement tutorials, any of the ones going over the subframe inserts in conjunction with mount replacement would suffice as the only difference is your just putting not putting the insert in the bushing.

A long term solution might be to have your welder add some extra metal reinforcement on the straps. On the shop race cars we make a piece utilizing a heim joint and steel DOM tubing, been debating whether or not to put it into production.

IMG_4665.jpg

Do you know what pitch the bolt that goes into the floor is? I found the bolt size on realoem, but didn't get the right thread pitch.

1972 2002tii // 2008 M3

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  • 8 years later...

in theory, yes.  however, in practice, the part would have to have been bent hard enough to actually bend the subframe mounting bolt.  not likely.  more likely if the part is bent is that the front end would have pulled out of the body.

 

have you looked at your subframe and trailing arm bushings?

 

nice dig with the search to bring up the topic!

2xM3

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