Is it also possible to measure to a different reference, like the
frame? Could a 1/2" difference be due to factory assembly rather than
suspension?
On Tue, Mar 23, 2021 at 8:18 PM Steve Kirby <sackirby@chinaautogroup.com> wrote:
>
> Jim
>
> Others may be able to offer you more insight, but you should keep in mind
> that shock absorbers do no influence ride height because they bear no weight.
> The "gas" in gas shocks is insufficient to raise the weight of your car
> (after all, you can compress the shocks by hand). If your rear ride height
> changed it was due to other factors.
>
> In a race car, the first thing that the builder would do would be to weigh
> all four corners. If the LF of the car weighs more than the RF, then the car
> will not sit level on exactly the same suspension components.
>
> Steve Kirby
> President
> China Auto Group
> 22831 Avenida Empresa
> Rancho Santa Margarita, CA 92688 USA
> Direct: (949) 261-8208
> Fax: (949) 767-5949
> Cell: (949) 903-0957
> Skype: steve.kirby29
> www.chinaautogroup.com
>
> -----Original Message-----
> From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Jim Henningsen
> Sent: Tuesday, March 23, 2021 5:06 PM
> To: triumphs@autox.team.net
> Subject: [TR] TR4A IRS Suspension Question
>
> Ok, just finished redoing front and rear suspension on my 67 4A IRS.
> Complete disassembly, clean, repaint, new urethane bushings, tie rod ends,
> trunnions, etc. New comp springs ( 1 inch lower) all corners, new stock
> tubes shocks up front and new KYB gas shocks on the tube shock conversion
> brackets for the IRS. Reinstalled all alignment shims as installed as the
> car drove pretty straight. Urethane packings on springs.
>
> After completing, I noticed that all four corners have a slightly different
> ride height when measured from garage floor to bottom on fender lip at center
> of each wheel. Left front: 26 3/4 inches, Right front: 26 1/4, Left
> rear: 27 3/8, right rear: 27 7/8. I think the higher rear height is coming
> from the tube shock conversion as it was lower with the levers. So about
> a half inch off each side. I don't recall having this issue when I redid
> my TR6, but that was a while ago. Rears also have stock trailing arm
> brackets (one and two notch brackets on each side - believe these are
> original from new given history of the car).
>
> Looking for help on next steps before bringing it in for an alignment. Will
> alignment correct height difference or do I need to add 1/2 inch spacers on
> lower sides. I am going to put uprated valved levers back on rear to
> eliminate the extra height in rear.
>
> Any help appreciated.
>
> Thanks
> Jim Henningsen
> Ocala FL
> Too many TRs to maintain!
> 61 3A
> 62 4
> 67 4A
> 75 6
> 81 8
>
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