[TR] Subject: Re: Lug nut torque spec - TR4

[Catpusher at aol.com]

Brad,
 
(bad Assume joke deleted)  The TR4 factory torque is 45 - 55 Lbs.  ft. for 
the OEM wheels.  Exceeding this on standard wheels can cause  wheel failure, 
as the OEM TR6 wheels are different, as are the TR6  & IRS rear studs and 
hubs.
 
I ran the 55 Lbs. ft. figure for alloy wheels that Mr. R. W. Kastner  
recommended in his TR3/4 comp prep books, and it worked very well on our  TR3 for 
25+ seasons of SCCA  racing with slicks, as well as the flat  towing part 
of this.
 
btw: the factory TR6 workshop manual specifies "60 to 80 Lbf.ft"
 
Hi To Susan!
 
TR Regards,
 
Hardy
 
 
In a message dated 6/21/2012 11:06:28 A.M. Pacific Daylight Time,  
triumphs-request at autox.team.net writes:

------------------------------

Message: 2
Date: Wed, 20  Jun 2012 16:04:02 -0400 (EDT)
From: tr6parts at charter.net
To:  brad.kahler at 141.com
Cc: triumphs at autox.team.net
Subject: Re: [TR] Lug  nut torque spec - TR4
Message-ID:  <428f8dda.1519b.1380b7e9b15.Webtop.48 at charter.net>
Content-Type:  text/plain; charset=UTF-8; format=flowed; delsp=no

Torque setting on a  TR6 is 80 ft lbs.

I would assume.... that it would be about the same  for a TR4.

Al


On Wed, Jun 20, 2012 at 12:48 PM,  brad.kahler at 141.com wrote:

> Listers,
>
> Ok, I've  finally got new wheels AND tires (195/65R15 Kumho) for my
> 4.  The  wheels are the low priced Mini-Lite replicas that are on the 
>  market.
> They come with chrome tapered style lug nuts.
> Since  these are not steel
> wheels I'm not sure what torque spec would be  appropriate.
>
> I know on Susan's
> spitfire race car where  we use 7/16" wheel studs and the same style of 
> lug nut
> I have  been using 65 to 70 ft lbs of torque.  I'm not sure if that 
>  torque is
> appropriate or not, especially for a street car.  I've  never seen any
> documentation supporting or refuting that that torque  setting.
>
> I know after a
> 20 minute session its not  unusual to have to re-torque the lug nuts 
> because
> they have  loosened up a bit.  This will happen over a number of 
> sessions  to
> where eventually they don't require re-torquing.
>
>  Any advice?
>
> Thanks,
>
> Brad
> 1963  TR4