Nobbysr Posted October 13, 2023 Report Share Posted October 13, 2023 G'day Everyone Hope you can help with identifying some square holes in the bulkhead on my TR3A there are 2 holes each side with one either side of where the master cylinders sit, so would be gratefull for any ideas you may have, cant see any logical reason for their presance ?? All the best Steve Quote Link to post Share on other sites
Lebro Posted October 13, 2023 Report Share Posted October 13, 2023 They are present on my '55 TR3 but serve no purpose, I have put rubber stoppers in them. They are not present on the offside. Perhaps something that was used for left hand drive versions ? Bob Quote Link to post Share on other sites
Nobbysr Posted October 13, 2023 Author Report Share Posted October 13, 2023 Hi Bob its an odd one as it looks to be produce by a press piercing tool and would have added additional cost .. Would they have been to fit a type of servo ??? clutching at straws here . cheers Steve Quote Link to post Share on other sites
Dic Doretti Posted October 13, 2023 Report Share Posted October 13, 2023 They are for a spring steel fitting for a self tapping screw although I do not know what would be fitted here. The fuse box and regulator on my TR2 are fitted with these fittings in square holes. Cheers Richard Quote Link to post Share on other sites
Lebro Posted October 13, 2023 Report Share Posted October 13, 2023 On the off side (RHD) the starter solenoid is held down with screws into spire nuts in square holes like that, but not in that position. Bob Quote Link to post Share on other sites
John McCormack Posted October 16, 2023 Report Share Posted October 16, 2023 Some square holes were for the jigs when the bodies were assembled. Quote Link to post Share on other sites
Nobbysr Posted October 16, 2023 Author Report Share Posted October 16, 2023 Interesting John , I would have thought they would have used round holes as it would have cheaper and easier to make plus better to seal .However they are in such odd place, either side of the pedal apperture on both sides of the car which is very strange cheers Steve Quote Link to post Share on other sites
Lebro Posted October 16, 2023 Report Share Posted October 16, 2023 I'm sure they would be intended to hold clip in captive nuts. But don't know for what purpose. Bob Quote Link to post Share on other sites
John McCormack Posted October 17, 2023 Report Share Posted October 17, 2023 7 hours ago, Nobbysr said: Interesting John , I would have thought they would have used round holes as it would have cheaper and easier to make plus better to seal .However they are in such odd place, either side of the pedal apperture on both sides of the car which is very strange cheers Steve I have seen photos of the cars being built in the factory with square pegs in the holes to position the various panels. Some years ago now but they might be somewhere on the net. Quote Link to post Share on other sites
Charlie D Posted October 17, 2023 Report Share Posted October 17, 2023 Not a great deal of help but there is a picture of a TR on a welding jig at the bottom of this page. I've mentioned it because it's a picture I've never seen before and may be of interest to show how they were built. https://www.standardmotorclub.org.uk/standardfactories Charlie. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted October 17, 2023 Report Share Posted October 17, 2023 11 hours ago, Charlie D said: Not a great deal of help but there is a picture of a TR on a welding jig at the bottom of this page. I've mentioned it because it's a picture I've never seen before and may be of interest to show how they were built. https://www.standardmotorclub.org.uk/standardfactories Charlie. Interesting sub assembly in the background A front apron with both front wings fitted. Quote Link to post Share on other sites
Nobbysr Posted October 18, 2023 Author Report Share Posted October 18, 2023 I think Bobs view makes sense as the holes do fit a spring captive nut. I have been speaking to a few people over the months and it apears that some cars didnt have square holes in that location, some cars had two on the drivers side and some cars four ?? Common practice when pressing panels is to carry out pierce and blanking operation first and then use any convient holes to locate the piece for the forming opperation either way its been interesting seeing the comments cheers steve Quote Link to post Share on other sites
Black Forest TR3A Posted October 19, 2023 Report Share Posted October 19, 2023 On 10/17/2023 at 10:34 PM, BlueTR3A-5EKT said: Interesting sub assembly in the background A front apron with both front wings fitted. ... and inner wings, too! Or am I wrong? Quote Link to post Share on other sites
Charlie D Posted October 19, 2023 Report Share Posted October 19, 2023 If you take a screen-shot of the page it is possible to blow the image up quite a bit without loss of quality and you can see much more of the background. I wonder if this was more of a development part of the works, rather than a production area. I know health and safety was not so hot in those days, but the sparks flying would not do a lot of good if one hit you in the eye. Charlie. Quote Link to post Share on other sites
iain Posted October 19, 2023 Report Share Posted October 19, 2023 (edited) Post 60,000 shell……….perhaps testing the fit of panels from the new tooling? Edited October 19, 2023 by iain Quote Link to post Share on other sites
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