John Morrison Posted May 14, 2023 Report Share Posted May 14, 2023 Hi folks, I know there are different TR$ racks, and that they in turn are different to a TR4A, but are all IRS Car steering racks the same? John. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 14, 2023 Report Share Posted May 14, 2023 Yes These are the part numbers we bought from Standard Triumph to sell as new spares. 306829 is RHD TR4A to 6 306830 is LHD TR4A to 6 Quote Link to post Share on other sites
John Morrison Posted May 14, 2023 Author Report Share Posted May 14, 2023 Ah thank you would you also know if the later TR4 rack is the same other than the outer tie rods? John Quote Link to post Share on other sites
BlueTR3A-5EKT Posted May 14, 2023 Report Share Posted May 14, 2023 Yes same rack bar in TR4 as TR4A=6 but has the longer inner tie rods, which are also used on Spitfire/GT6. Quote Link to post Share on other sites
John Morrison Posted May 14, 2023 Author Report Share Posted May 14, 2023 Magic many thanks John Quote Link to post Share on other sites
Z320 Posted May 15, 2023 Report Share Posted May 15, 2023 (edited) One of my suppliers (reliable workshop, also trading with parts) told me this racks are made at Türkiye and Argentinia. One of both is poor and the other the better quality. But I forgot which one, this is no problem because most suppliers anyway don’t know. Ordering one I had to wait until he was able to sell me the better one. True or not? I don’t know. btw the aluminum housing is till tight on the steel tube, but I don't know if this was his quality criterion Edited May 15, 2023 by Z320 Quote Link to post Share on other sites
John L Posted May 15, 2023 Report Share Posted May 15, 2023 I thought that it was only the quick rack that was the problem with the aluminium and the shaft tube, is this correct? John Quote Link to post Share on other sites
Lebro Posted May 15, 2023 Report Share Posted May 15, 2023 I think the TR7 (modified) rack supplied to me by Revington TR for my conversion was made in Argentina. It appears to be of good quality. Bob Quote Link to post Share on other sites
Z320 Posted May 15, 2023 Report Share Posted May 15, 2023 (edited) On some (or all?) new steering racks there is a construction fault: the drilled nut on both ends, holding the tie rods and allow them to angle, are smaller than original. This is why the tie rods can be angled less (the issue is down), this in no problem - until the car is jacked on the front! In this case the coil springs press the wheels down and pull / bend really bad on the steering rack and the aluminum housing. This is more the case if the rack is lifted by aluminum brackets. I posted this several times at this forum but never got any reaction. I’m an idiot and should stop pointing on this…. Ciao, Marco with the reproduction rack with the original rack btw bending on the rack and aluminium housing could be the reason for the housing moving apart from the steel tube, but somebody how has this problem must find out Edited May 16, 2023 by Z320 Wrong letter + add btw Quote Link to post Share on other sites
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