wjr85 Posted January 5, 2014 Report Share Posted January 5, 2014 Only one of my original trunnions is usable as the other's splines on either side of the shaft are too far worn, they are both marked Die 3 and are from a post 60000 car. I have since removed another trunnion from a pre 60000 chassis which is usable but it is marked Die 2. I assume that I can use these trunnions as they are all the same but cast from different Dies/batches. Would this also mean that early tr2's would have trunnions marked Die 1. In essence the main point that I need clarification on is can I use a Die 2 and Die 3 trunnion in the same car. Thanks John Quote Link to post Share on other sites
RogerH Posted January 5, 2014 Report Share Posted January 5, 2014 Hi John, bit of a guess but as nobody has mentioned die numbers before and they can be bought individually then I'm sure mix and match would be OK. If the brass section of your duff trunnion is OK then you can get just the steel shaft with the splines on - apprx £15 - you do need a pretty good press to get them in though. Roger Quote Link to post Share on other sites
Don Elliott Posted January 5, 2014 Report Share Posted January 5, 2014 All my reference books and parts lists show the same part number 101557 for all TR2s, Tr3s, TR3As and Bs and TR4 up to CT6344 with wire wheels and up to CT6390 with steel wheels. These all have zero camber. One might assume that the Die No. refers to any particular die which happened to be used to cast any particular trunnion. Quote Link to post Share on other sites
wjr85 Posted January 5, 2014 Author Report Share Posted January 5, 2014 Pictures of trunnions in question other numbers above are the same. Thanks John Quote Link to post Share on other sites
Bob Smith Posted January 6, 2014 Report Share Posted January 6, 2014 John, The part number embossed on the trunnions are from Alford & Alder based in Hemel Hempstead? who used to make suspension parts for S-T (and probably other Vehicle Makers) and deliever the suspensions as sub assemblies to S-T . The fact that the two trunnions have the same part number means that they are interchangeable. I think that the die number is an internal control method in case of quality problems and nothing for you to worry about. Quote Link to post Share on other sites
wjr85 Posted January 6, 2014 Author Report Share Posted January 6, 2014 Thanks Bob that's my question answered so will proceed as I thought I would unless anyone else has anything to add. Thanks again John Quote Link to post Share on other sites
RogerH Posted January 7, 2014 Report Share Posted January 7, 2014 Hi John, as they both have the same number are they both the same 'hand'. You need a left and a right hand. Roger Quote Link to post Share on other sites
mjdearing Posted January 7, 2014 Report Share Posted January 7, 2014 Hi wjr85 what ever you end up using screw a vertical link into it put the trunnion in a vice and check for play in all directions on the link over years of were and neglect they are usually worn. It might be worth checking V links at this point for stress cracks. Quote Link to post Share on other sites
wjr85 Posted January 7, 2014 Author Report Share Posted January 7, 2014 Was already aware of the possible wear and tear problems with the vertical links and possible stress cracks on reading other forum postings. I am only using one of my original vertical links as the treads were badly worn on the second that would cause excess play, I sand blasted the two I intend to use back to the bare metal and there are no stress cracks so I believe they are ok to go again. Roger I do not believe that either the trunnions or vertical links are handed. Regards John Quote Link to post Share on other sites
Alec Pringle Posted January 7, 2014 Report Share Posted January 7, 2014 The fact of the same part number doesn't necessarily mean a great deal . . . Standard Triumph were ever fond of evolving actual components without changing the part number. That applied from the 40s to the end of production. I can recall from the days when nos trunnions were commonplace that there was indeed a correlation between die number and vertical link, and that a given nos vertical link might fit a nos trunnion of one die number perfectly, yet be a poor fit on an apparently identical nos item of another die number. At the time, late 70s, we (SDG) gathered together quite a few nos trunnions and verticals, sufficient to satisfy ourselves that there was indeed some relationship at work. Presumably this explains one aspect of the difficulties that manufacturers of repro component face - which nos component do you take as reference, or do you take an average, or what ? Cheers Alec Quote Link to post Share on other sites
TorontoTim Posted January 8, 2014 Report Share Posted January 8, 2014 John Re: "Handing" I think you are right in that TR2/3 and early 4's (like mine) have two trunnions that are, nominally, the same - i.e. that they are NOT handed. This only came in later in the TR4 with the 3 degree castor. Tim Quote Link to post Share on other sites
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