Rich Posted August 16, 2012 Author Report Share Posted August 16, 2012 I think the OEM bolt was a 14mm hex but the other one I got was a 17mm hex so not sure how accurate that could be. I like the idea of using the coil but I'm hoping a tap will just repair the damaged thread enough to get the new bolt in. Quote Link to comment Share on other sites More sharing options...
Bazza Posted August 16, 2012 Report Share Posted August 16, 2012 another route :(if m10 x 1.25) http://www.amazon.co...45115882&sr=8-3 That looks interesting. What are the thread inserts as other kits don't come with these? Do you use that kit the same as the other taps? How can I find out whether this hole is an M8 or M10? get the ruler out ! m8 will be 8mm wide m10 will be 10mm wide measure to the edge of the threads as size is based on blank shaft then count how many threads there are per inch ! 1.25 will be about 20 1.5 will be about 16 Quote Link to comment Share on other sites More sharing options...
Rich Posted August 16, 2012 Author Report Share Posted August 16, 2012 Thanks Barrie, never knew there was so much to know about bolts! Looking at the photo of the 2 bolts together I would say it's 1.25, the bolt is around an inch long. Quote Link to comment Share on other sites More sharing options...
Vipercar93 Posted August 16, 2012 Report Share Posted August 16, 2012 Thanks Barrie, never knew there was so much to know about bolts! Looking at the photo of the 2 bolts together I would say it's 1.25, the bolt is around an inch long. Well it was said on page 1 the Japanese coarse thread was equivalent to A UNF thread. Hope you learned something from it all, is what it's all about. Quote Link to comment Share on other sites More sharing options...
hms Posted August 17, 2012 Report Share Posted August 17, 2012 If the worse comes to the worse, could always use a nut! If you do that, use the nut on the outside, so if the nut comes off the bolt stays in place. h Quote Link to comment Share on other sites More sharing options...
Rich Posted August 17, 2012 Author Report Share Posted August 17, 2012 If the worse comes to the worse, could always use a nut! If you do that, use the nut on the outside, so if the nut comes off the bolt stays in place. h There is no access from underneath though and I don't want to start cutting holes in the floor otherwise I would've done that. Quote Link to comment Share on other sites More sharing options...
Rich Posted September 30, 2012 Author Report Share Posted September 30, 2012 Finally got some replacement bolts, I asked for 2 but the guy sent me 8! I thought I would try one yesterday on the off chance it would go in ok(ish) but it chewed up in the same place. Measuring the bolt at first with a ruler I thought it was an M8 but when I was at WIM they have a tap set and it looks abit small now looking at the bolt. So I've just measured it again trying to get the thread edges to the edge of the ruler and it's an M10. Question I have now is could this hole be repaired with just a tap after trying to put a bolt in with the wrong thread pitch or will I need to use those wire thread inserts? If I need the latter does the hole need to be made larger? Quote Link to comment Share on other sites More sharing options...
Vipercar93 Posted September 30, 2012 Report Share Posted September 30, 2012 If you tap it out you will not have the same load strength, but it would probably be good enough. Quote Link to comment Share on other sites More sharing options...
Rich Posted October 1, 2012 Author Report Share Posted October 1, 2012 It's not like it relies on just the one bolt so with the other 3 it should still be fine. Quote Link to comment Share on other sites More sharing options...
liner33 Posted October 1, 2012 Report Share Posted October 1, 2012 A helicoil kit ( those wire inserts) comes with the correct drill and tap Quote Link to comment Share on other sites More sharing options...
Rich Posted October 1, 2012 Author Report Share Posted October 1, 2012 Do they come with the handle as well for the tap? I wasn't too sure what the red parts in the kit Barrie posted were used for. Quote Link to comment Share on other sites More sharing options...
liner33 Posted October 1, 2012 Report Share Posted October 1, 2012 No you need a handle or adjustable spanner will do Quote Link to comment Share on other sites More sharing options...
Rich Posted October 1, 2012 Author Report Share Posted October 1, 2012 How do those kits work then, just drill the hole, press or twist the coil in and then the bolt? Sounds too easy. Quote Link to comment Share on other sites More sharing options...
liner33 Posted October 1, 2012 Report Share Posted October 1, 2012 You drill the hole out, run the tap down the thread , wind the insert in and break off the tab , not hard but still easy to mess up Quote Link to comment Share on other sites More sharing options...
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