Kevo_6 Posted January 11, 2013 Report Share Posted January 11, 2013 Hi I have just bought a set of suspension coil springs from a reputable TR dealer and the rear spring diameter of the new springs are 105 mm and will not fit in my trailing arms correctly. The old rear springs are 95 mm. The TR dealer is telling me, that this is the diameter of springs that all the usual suspects are selling and I should grind my T/A to suit. The TR dealer will get me new springs made to 95/100 mm specially at no further cost (which is great on their part) but may take a month or so to do. So really my question is what should I do as I am a bit scared of adjusting the T/As to fit and I am sure I can't be the 1st person to have this problem and does anyone have a record of the size of springs originally fitted for the front & rear. I appreciate your HELP, advice and comments in advance. My car's year is 1972. Quote Link to post Share on other sites
Davidw Posted January 11, 2013 Report Share Posted January 11, 2013 I would urge you in the strongest terms not to grind out theTAs. They are 40 years old and unlikely to wthstand that and they are not easy to replace either. I am mystified by this as i replaced all springs on my 5 three years ago and they were a straight swap. Quote Link to post Share on other sites
AlanT Posted January 11, 2013 Report Share Posted January 11, 2013 Don't mess with the arms. You need all that metal. Send em back. Go round all the others and try to find the right size. Al. Quote Link to post Share on other sites
Kevo_6 Posted January 11, 2013 Author Report Share Posted January 11, 2013 Thanks Guys My thoughts as well re grinding the T/A, its only just nipping the T/A just before it touches the rubber insulators. What about grinding a small chamfer on the spring edge. Quote Link to post Share on other sites
AlanT Posted January 11, 2013 Report Share Posted January 11, 2013 Grinding a chamfer on the spring would not worry me. Try to do it so the grind marks follow the thread rather than crossing it so that you give less chance for a bit to break off. Otherwise whats to loose? A broken spring maybe, but thats about all. Nothing irreplaceable. You can always find someone to make a spring. Al. Quote Link to post Share on other sites
Kevo_6 Posted January 11, 2013 Author Report Share Posted January 11, 2013 Al Many thanks for the info. Quote Link to post Share on other sites
PIAA Posted January 11, 2013 Report Share Posted January 11, 2013 Hi Your post made me a bit anxious as I'm doing the same job at the moment. I checked the new rear springs (standard) bought from Moss earlier this year. The diameter is ca 98mm and they seem to fit fine in the trailing arm. PIAA Quote Link to post Share on other sites
Kevo_6 Posted January 11, 2013 Author Report Share Posted January 11, 2013 Hi PIAA Looks like the Moss standard springs are a close match to the originals, mine are from TRGB slightly uprated/lowered and they have said they have had no probs fitting them in their workshop cars but agree that they can be a bit tight on occasions and just need turning to find a good fit. Hope your rebuild goes smoothly. Quote Link to post Share on other sites
Alec Pringle Posted January 11, 2013 Report Share Posted January 11, 2013 The suggestion of grinding out the trailing arms takes some beating . . . . the bloke responsible for that suggestion is in my book the undisputed leader of this year's TR Register Prat of The Year award. Can't say I'm too impressed with the idea of grinding chamfers off the spring either, sounds to me like a swift route to a broken spring. Sorry Kevo, but either a spring fits the OE housing or it's not fit for purpose, simple as that. Cheers Alec Quote Link to post Share on other sites
Guest ntc Posted January 11, 2013 Report Share Posted January 11, 2013 Never in my time with Tr's have I ever heard of something so daft.I did also question the poly bushes at the time Kevo Quote Link to post Share on other sites
Kevo_6 Posted January 11, 2013 Author Report Share Posted January 11, 2013 Hi Neil Well the poly bushes went in ok and seem fine . Always seems that i have some sort of drama. At least i can rely on you guys to keep me sane Quote Link to post Share on other sites
Guest ntc Posted January 11, 2013 Report Share Posted January 11, 2013 I would send a link to this topic to Mr Bates and I for one would like to see his reply Quote Link to post Share on other sites
cmdr19 Posted January 11, 2013 Report Share Posted January 11, 2013 Why are replacement springs being manufactured oversize anyway? You can't go grinding away at suspension parts, even moreso springs which have been tempered. Haven't been given front springs by mistake? I think they're slightly larger in diameter. Mike Quote Link to post Share on other sites
Tony Millward Posted January 12, 2013 Report Share Posted January 12, 2013 Hi Kevo, Front springs are 95mm outside Diameter and rear springs are 100mm Dia. Rear springs are also longer than the fronts. Check the length as you may have been sent front springs by mistake. As others have said, If they aren't correct send them back but DON'T start grinding your trailing arms mate. Cheers Tony Quote Link to post Share on other sites
Kevo_6 Posted January 12, 2013 Author Report Share Posted January 12, 2013 Thanks for the advice guys, I would not touch the T/As, mentioned this to TRGB at the time I also got them to check my sizes against their stock and they say I have the correct springs. The spring sizes are Rear = 105 x 2300 x 14 Front = 105 x 2600 x 12 labeled F39 Tony thanks for the reply but I thought small dia for rear and longer at the back as you say. Think I will send them back, bl**dy waste of time. Quote Link to post Share on other sites
Davidw Posted January 12, 2013 Report Share Posted January 12, 2013 They have to be the wrong ones to be so oversized. Someone at the warehouse has dropped a pallet load and these have been put in the wrong box of similar looking TR6 rear springs. Quote Link to post Share on other sites
Kevo_6 Posted January 12, 2013 Author Report Share Posted January 12, 2013 Hi David That was my thoughts but they are adamant they are the right springs and its my T/As that are wrong (undersized). Next visit Moss ! ð¬ Quote Link to post Share on other sites
Guest ntc Posted January 12, 2013 Report Share Posted January 12, 2013 The spring cup in the arm is all the same size on Tr irs cars.Not sure about others? Quote Link to post Share on other sites
Alec Pringle Posted January 12, 2013 Report Share Posted January 12, 2013 If the trailing arms are 'undersized', then it's the first time I've ever heard of such a thing . . . . . . It's not as though any other Triumph trailing arm will substitute for a TR IRS unit and confuse matters. This afternoon I checked my spare units, 4A, 5, early CP6, late CR6 - using an original nos spring. Fits all of them like a hand in glove, there can't be more than a millimetre or two in diameter between the 4 arms. Cheers Alec Quote Link to post Share on other sites
Davidw Posted January 13, 2013 Report Share Posted January 13, 2013 Kevo FWIW I got the complete set of 25% uprated and slightly lowered from TR shop. If you need part nos send PM. Quote Link to post Share on other sites
Red 6 Posted January 13, 2013 Report Share Posted January 13, 2013 Send them back and get a pair that fit from someone else. If they reccomend a grind then let them do it to one of their customers cars. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 14, 2013 Report Share Posted January 14, 2013 (edited) Chuck em back. The specialist should know what is right. Cheers Peter W PS. If the supplier is sure these are right you may be doing something wrong. Or they may be staffed by non specialists. Get Gary Bates involved . Edited January 14, 2013 by BlueTR3A-5EKT Quote Link to post Share on other sites
stuart Posted January 14, 2013 Report Share Posted January 14, 2013 TR Shop do perfect fit ones. Stuart. Quote Link to post Share on other sites
Kevo_6 Posted January 15, 2013 Author Report Share Posted January 15, 2013 Kevo FWIW I got the complete set of 25% uprated and slightly lowered from TR shop. If you need part nos send PM. ------------------------------------------------------------------------------------------------------------ Hi David You have a PM. Quote Link to post Share on other sites
Davidw Posted January 15, 2013 Report Share Posted January 15, 2013 As do you now, Kevo. Sorry for the delay. Quote Link to post Share on other sites
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