Graham Robson Posted March 28, 2013 Report Share Posted March 28, 2013 OK sleuths, what about this ? If you look at the FIA Homologation Papers for the TR7 V8/TR8, you will see pictures of two gearboxes. One is the usual, easily-recognisable production car box, but what is the other ? It's not a BL box of any type, as far as I can see ? GRAHAM R Quote Link to post Share on other sites
amclpreston Posted March 28, 2013 Report Share Posted March 28, 2013 OK sleuths, what about this ? If you look at the FIA Homologation Papers for the TR7 V8/TR8, you will see pictures of two gearboxes. One is the usual, easily-recognisable production car box, but what is the other ? It's not a BL box of any type, as far as I can see ? GRAHAM R Haven't seen the papers.., but wasn't Getrag the traditional route to go for the unburstable kind of application..? Quote Link to post Share on other sites
Graham Robson Posted March 28, 2013 Author Report Share Posted March 28, 2013 Getrag or ZF were both 'go to' alternatives but, amazingly, not even Bill Price recognises what this particular gearbox is. He is quite certain that it was never used on a TR7 V8 built for motorsport at Abingdon. GRAHAM R Quote Link to post Share on other sites
Guest ntc Posted March 28, 2013 Report Share Posted March 28, 2013 Trans X Quote Link to post Share on other sites
Graham Robson Posted March 28, 2013 Author Report Share Posted March 28, 2013 Sorry, don't understand. What is 'Trans X', what nationality is it, who else uses it, have you ever seen a TR7 V8 with one fitted ? Quote Link to post Share on other sites
Guest ntc Posted March 28, 2013 Report Share Posted March 28, 2013 Have not seen one but many years ago on a rally that I was part of there was a Tr7v8 that I was told had Trans x gearbox built with Quaife involved Quote Link to post Share on other sites
Alec Pringle Posted March 29, 2013 Report Share Posted March 29, 2013 Hi Graham, I think Neil refers to Tran-X, who Quaife bought out last year. Oft referred to as Trans-X, Transex or Trannex. As far as I recall, Tran-X started out about the time that the TR era came to a close, and in any case their earlier offerings would not, I think, have been adequate for V8 torque. If the mystery gearbox is not the 'quick release' BL box then it may be the Costello box ? That was supposed to have been trialled, and Ken Tomlinson mentioned in passing a few years back that it had been authorised for use but then canned by politics from above. Similar story to the Jack Knight axle. I've mentioned this discussion to Chris Turner, he's going to dig around in his archives. Hopefully enlightenment on the morrow . . . . Cheers Alec Quote Link to post Share on other sites
Graham Robson Posted March 29, 2013 Author Report Share Posted March 29, 2013 Thanks guys for all this. As I said, the Homologation Papers (which I cannot scan .... sorry) have a picture, so someone, out there, should be able to look at that pic and identify it. Whatever it was, we should remember that it was presumably capable of withstanding more than 300bhp, and related amounts of torque, for use on 'works'-standard TR7 V8s .... Quote Link to post Share on other sites
Graham Robson Posted March 30, 2013 Author Report Share Posted March 30, 2013 Alec, Many thanks for your helpful input but .... i have just looked up the description of the Costello box (AUTOCAR late 1974 had a cutaway drawing), which looks visually completely different. Oh, and another thing - the description said that Ken Costello said it could cope with up to 200bhp. Yet the 'works' TR7 V8s, as you so well know, had more than 300bhp .... Keep digging, gentlemen, I really do, truly, want to know the answer .... Quote Link to post Share on other sites
Guest ntc Posted March 30, 2013 Report Share Posted March 30, 2013 Graham The Costello box would never cope with the power as this was used in the detuned Mg v8,I do have someone who thinks the same as me on the case and will report our findings to you Quote Link to post Share on other sites
Guest ntc Posted April 6, 2013 Report Share Posted April 6, 2013 Graham HRW 250V may have your answer,still working on it Quote Link to post Share on other sites
Kevin jones Posted July 25, 2021 Report Share Posted July 25, 2021 is it a tremec T5 I own the lm car and there is a T5 with its spares? Quote Link to post Share on other sites
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