Great thoughts and much appreciated. I believe the higher rear height is from
the steel brackets used in the tube shock conversion kit, but I could be wrong.
Let me drive it some more and get it loosened up and then measure again and
also include measuring floor to frame on each corner. I need to do something
as it doesnâ??t quite look right visually either and a TR has to look right
when it sits. In my opinion. Thanks
Jim
> On Mar 23, 2021, at 9:17 PM, Michael Marr <mmarr@albiontechnical.com> wrote:
>
> Another thought. On my TR3A, there is a spacer on one of the rear springs
> that, effectively, increases the unloaded ride height on the driver's side to
> account for the fact that the car is driven driver-only most of the time.
> Does the same situation exist with the 4A? Is one rear spring longer than
> the other to provide the ride height difference? Have you tried measuring
> the ride height with someone (an adult, preferably) in the driver's seat?
>
> Mike
>
> Michael J Marr, P.E., CEng.
> Albion Technical Services
> W5918 Hackbarth Rd
> Fort Atkinson, WI 53538
>
> Cell: 630-202-0065
> Email: mmarr@albiontechnical.com
>
> -----Original Message-----
> From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Michael Marr
> Sent: Tuesday, March 23, 2021 8:03 PM
> To: Jim Henningsen <trguy75@gmail.com>; triumphs@autox.team.net
> Subject: Re: [TR] TR4A IRS Suspension Question
>
> Have you driven the car? A few road miles will help the suspension settle.
> There's a lot of "stiction" in those new components.
>
> Also, I agree with Jim Kirby - the new shocks will not affect ride height,
> unless, for some reason, they have bottomed out and are bound up.
>
> Mike
>
> Michael J Marr, P.E., CEng.
> Albion Technical Services
> W5918 Hackbarth Rd
> Fort Atkinson, WI 53538
>
> Cell: 630-202-0065
> Email: mmarr@albiontechnical.com
>
> -----Original Message-----
> From: Triumphs <triumphs-bounces@autox.team.net> On Behalf Of Jim Henningsen
> Sent: Tuesday, March 23, 2021 7:06 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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