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Rear Subframe Trunion Torque?


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#1 Jimbob98

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Posted 11 January 2017 - 08:28 PM

Hi , as the title says, does anyone know the correct torque for the trunion bolts at the front end of the rear subframe.
I've got a Haynes manual and can't find it in there, any help would be greatly appreciated, I'm in the process of building my mini back up and becoming quite exciting after the many months of cuttting grinding etc......lol

James

#2 Jimbob98

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Posted 11 January 2017 - 09:17 PM

It's all new bushes and I don't want to overtighten although it needs to be secure. Or is it an old school method of what feels right...

James

#3 Swift_General

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Posted 11 January 2017 - 09:27 PM

I don't torque them up, and I don't beleive there is a specific setting (someone else may know), however if you are not confident I'd use the setting for the nyloc nut on the tie rod which is 20-24 lbft.

Edited by Swift_General, 11 January 2017 - 09:28 PM.


#4 Jimbob98

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Posted 11 January 2017 - 09:29 PM

Ah brill that sounds good, thanks for the advice

#5 humph

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Posted 12 January 2017 - 01:00 PM

Link to a thread by me asking the same question some time ago. Similar answers.

 

http://www.theminifo...y-trunnions-be/



#6 AndyR

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Posted 12 January 2017 - 06:41 PM

But keep in mind that between the 2 trunions it should measure 50.5", if you compress (tighten) them too much, or for that matter too little you may struggle getting them to line up with your body.

 

Andy



#7 Moke Spider

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Posted 12 January 2017 - 07:18 PM

The factory figure I have for the trunion nut is 35 to 40 ft / lbs.

 

But keep in mind that between the 2 trunions it should measure 50.5", if you compress (tighten) them too much, or for that matter too little you may struggle getting them to line up with your body.

 

Andy

 

They are shouldered 'bolts' so they do need to be done up until, on the Rear set the Washers bottom out on the shoulder and with the front set, the shoulder of the Pins bottom on the subframe. 

 

Do a trial assembly without the rubbers and trunions in there and you'll see it clear as day ;D



#8 xrocketengineer

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Posted 13 January 2017 - 02:31 PM

I can't remember what torque value I found in the factory manual, it worked perfectly on the right side, but it became a nightmare on the left. The threads were damaged on the pin and the nut would not come out. Ordered two new pins and again the right side went in with no problems, the left one ended up with a damaged new pin. I had to reuse the right pin with much lower torque until the nut was seated on the shoulder. I would go with the 35 ft / lbs recommended by Moke Spider but not more than that.
 
 
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Edited by xrocketengineer, 13 January 2017 - 04:10 PM.





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