jfg Posted November 9, 2018 Report Share Posted November 9, 2018 I've just realised that i haven't checked my car for nut & bolt sizes before wrapping it up. My car is a 1977 tr7. Is it most likely to have imperial or metric sizes? Quote Link to post Share on other sites
TR8IAN Posted November 9, 2018 Report Share Posted November 9, 2018 All the TR7s and 8s had Metric bolts. Cheers ian Quote Link to post Share on other sites
UlsterTR7 Posted November 10, 2018 Report Share Posted November 10, 2018 There are a few odd sizes still; I had to run about looking for UNC items for the thermostat housing on the manifold of my 1980 DHC... it's left me very suspicious that there are some mix and match dotted about the car. Quote Link to post Share on other sites
jfg Posted November 10, 2018 Author Report Share Posted November 10, 2018 thanks for the info. i just need to get the garage space back and i can start the restoration. Quote Link to post Share on other sites
DaveR Posted November 10, 2018 Report Share Posted November 10, 2018 I have an original low mileage 1980 DHC and agree with Ulster TR7, Colin. It seems to be what was in the parts bin. I guess it all should have been metric, but not all was. Dave Quote Link to post Share on other sites
stevew2 Posted November 11, 2018 Report Share Posted November 11, 2018 The TR7 has both metric and imperial bolt sizes. Quote Link to post Share on other sites
Jose Posted November 13, 2018 Report Share Posted November 13, 2018 There is a mix of sizes. There is a list on the first pages of the workshop manual which details every screw size. It looks as if engine is all imperial and chassis is metric. Quote Link to post Share on other sites
ChippyMike Posted November 13, 2018 Report Share Posted November 13, 2018 It's British Leyland. Just expect the unexpected!! Quote Link to post Share on other sites
DaveR Posted November 13, 2018 Report Share Posted November 13, 2018 2 hours ago, ChippyMike said: It's British Leyland. Just expect the unexpected!! Stuff out of the parts bin just the same as all British cars. Dave Quote Link to post Share on other sites
UlsterTR7 Posted November 14, 2018 Report Share Posted November 14, 2018 (edited) On 11/10/2018 at 1:49 PM, DaveR said: I have an original low mileage 1980 DHC and agree with Ulster TR7, Colin. It seems to be what was in the parts bin. I guess it all should have been metric, but not all was. Dave It's left me quite wary, especially when trying to retap threads and I'm not sure what species of tap to actually use... I have both metric and UNF taps and dies, but even fitting a replacement bolt on this or that component becomes a trial until you find that the threads you've selected is actually correct. Just one of the joys of Triumph ownership! Thanks Jose - I've found those pages on the manual and it appears the engine is all either UNF or UNC and the body / suspension etc is metric. Re ChippyMike - if you expect the unexpected, doesn't that mean it's no longer unexpected? Edited November 14, 2018 by UlsterTR7 Quote Link to post Share on other sites
ChippyMike Posted November 20, 2018 Report Share Posted November 20, 2018 'Par for the course' would probably have been a better phrase. Still love it though!! Quote Link to post Share on other sites
DaveR Posted November 20, 2018 Report Share Posted November 20, 2018 I agree, once you know it's not a problem and they are great cars. Dave Quote Link to post Share on other sites
dursley Posted May 8, 2019 Report Share Posted May 8, 2019 On 11/9/2018 at 6:11 PM, TR8IAN said: All the TR7s and 8s had Metric bolts. Cheers ian Except for the engine stuff which is Imperial, UNF and UNC Quote Link to post Share on other sites
jfg Posted May 8, 2019 Author Report Share Posted May 8, 2019 I've found af sizes on calipers and metric on the both master cylinders. the clutch slave was metric but the thread is so far unknown, but not metric Quote Link to post Share on other sites
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