Marco79 Posted October 24, 2012 Share Posted October 24, 2012 Looking at replacing a few bolts on the engine (ancillary wise) does anyone know the type common to the 2jz are they unf,bsf,metric,ANC? Link to comment Share on other sites More sharing options...
pedrosixfour Posted October 24, 2012 Share Posted October 24, 2012 (edited) M6, M8 & M10 (all metric) will fill most holes on a Supra mate. I'd need to check my bucket of spare bolts to see if they use the fine or normal tread sizes though. Edited October 24, 2012 by pedrosixfour (see edit history) Link to comment Share on other sites More sharing options...
Dnk Posted October 24, 2012 Share Posted October 24, 2012 Metric with some possibly being Metric fine Link to comment Share on other sites More sharing options...
Marco79 Posted October 24, 2012 Author Share Posted October 24, 2012 Awesome thanks guys, just to confirm for example a if I measure a threaded hole with verniers and it was say 8.3mm that Would be an M8 and not some funky imperial size? Link to comment Share on other sites More sharing options...
pedrosixfour Posted October 24, 2012 Share Posted October 24, 2012 Awesome thanks guys, just to confirm for example a if I measure a threaded hole with verniers and it was say 8.3mm that Would be an M8 and not some funky imperial size? If you measure the BOLT HOLE and it reads 8.3mm then the BOLT SIZE is 10mm. You have to allow for the tread depth. Link to comment Share on other sites More sharing options...
Dnk Posted October 24, 2012 Share Posted October 24, 2012 All the threads will be metric Your better off measuring the bolt that came out the hole to be honest Link to comment Share on other sites More sharing options...
Marco79 Posted October 24, 2012 Author Share Posted October 24, 2012 If you measure the BOLT HOLE and it reads 8.3mm then the BOLT SIZE is 10mm. You have to allow for the tread depth. All the threads will be metric Your better off measuring the bolt that came out the hole to be honest Ok thanks guys so it's the extremity of the thread on the bolt that defines the size that helps loads thread sizes have always been a confusing subject or me lol Link to comment Share on other sites More sharing options...
Dnk Posted October 24, 2012 Share Posted October 24, 2012 http://www.kasthurimmc.com/tap-drill-chart.html If you measure the hole then it should be close to the tapping drill size shown in these charts Link to comment Share on other sites More sharing options...
Marco79 Posted October 24, 2012 Author Share Posted October 24, 2012 http://www.kasthurimmc.com/tap-drill-chart.html If you measure the hole then it should be close to the tapping drill size shown in these charts That's brilliant thanks dunk Link to comment Share on other sites More sharing options...
Dnk Posted October 24, 2012 Share Posted October 24, 2012 That's brilliant thanks dunk Link to comment Share on other sites More sharing options...
Pulley Posted October 27, 2012 Share Posted October 27, 2012 they are a mix of fine and standard thread pitch, if you get a pitch guage you can hold against the thread of the existing bolt to tell you if its standard or fine pitch, all metric far as ive found Link to comment Share on other sites More sharing options...
monsween Posted October 27, 2012 Share Posted October 27, 2012 Rather than measuring i'd probably chuck a tap down it to confirm the thread Link to comment Share on other sites More sharing options...
Digsy Posted October 27, 2012 Share Posted October 27, 2012 Rather than measuring i'd probably chuck a tap down it to confirm the thread If you do that with a thread that you think is standard pitch and it turns out to be fine you will probably mess up the thread. I'm not sure it its a hard and fast rule, but some Fear East manufacturers use standard pitch for M8 and below, and fine pitch for M10 and above. Link to comment Share on other sites More sharing options...
Pulley Posted October 27, 2012 Share Posted October 27, 2012 If you do that with a thread that you think is standard pitch and it turns out to be fine you will probably mess up the thread. I'm not sure it its a hard and fast rule, but some Fear East manufacturers use standard pitch for M8 and below, and fine pitch for M10 and above. thats wot ive found on the supra so far, ive replaced almost all my hardware with decent stainless or titanium Link to comment Share on other sites More sharing options...
Marco79 Posted November 1, 2012 Author Share Posted November 1, 2012 Thanks for all the help guys everything m8 and above has turned out to be metric fine I've now been able to order my chrome bolts Link to comment Share on other sites More sharing options...
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