Kaan W Posted February 14, 2014 Share Posted February 14, 2014 Hi all, I'm not sure if the thread varies from different coilovers but I'm after the size and pitch of the thread for the 6 you can see in the engine bay on top of the strut tower. They are BC coilovers. Ive tried m10 and 3/8th UNF but none of them fit. I had a thread gauge tool somewhere but it's gone walkies. If anyone knows or has a tool they could measure that would be great! Cheers Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 14, 2014 Share Posted February 14, 2014 If they are not "normal" metric coarse (M10 x 1.5 mm pitch) they will almost certainly be M10 x 1.25 mm pitch (metric fine). On the front subframe there's a bracket of pressed steel, held by 4 nuts, between the steel and alloy crossmembers, just inboard of the lower wishbones. these nuts are usually easy to get off and M10 x 1.25 mm pitch, so you can try one on the top mounts. the Chinese like metric fine, so that's what they probably are. VERY unlikely to be Imperial. There's also an M10 x 1.00 mm pitch thread, but it's very rare on cars. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted February 14, 2014 Author Share Posted February 14, 2014 Thanks Chris thats brilliant! I'll try one of the subframe nuts when I'm home and go from there. Aswel as the various other bolts around the engine and bay would these be metric course/fine also? Think they are a mix of both. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 14, 2014 Share Posted February 14, 2014 Like most Jap cars you will find a mix of metric coarse and metric fine. You will find very few nuts or bolts with 13mm spanner sizes though, not sure why Japan eschewed these, but they favour 10, 12, 14, 17 and 19mm hexagon sizes. They like 10 mm x 1.25 thread nuts with built in washer flanges, too. At least they use good material, unlike some of the junk that was used on British and Italian cars. Quote Link to comment Share on other sites More sharing options...
Kaan W Posted February 14, 2014 Author Share Posted February 14, 2014 Yeah ive found them 10 and 12s to be everywhere. Thats perfect though exactly the information I was after. Thanks again. Quote Link to comment Share on other sites More sharing options...
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