anthony121 Posted August 9, 2015 Report Share Posted August 9, 2015 Hi everyone. The 2 exhaust studs on my TY175 have been butchered by the previous owner so it looks like I am going to have to helicoil them. I just thought I would check on here to see if anybody else has done them and if there is anything I should watch out for.Thanks. Link to comment Share on other sites More sharing options...
capper Posted August 9, 2015 Report Share Posted August 9, 2015 I drilled and tapped mine oversize, plenty of meat around it I think it was 6mm out to 8mm you have to open out the holes in the exhaust flange too 1 Link to comment Share on other sites More sharing options...
anthony121 Posted August 9, 2015 Author Report Share Posted August 9, 2015 Great thanks for the reply I'll get on it tomorrow. Link to comment Share on other sites More sharing options...
guys Posted August 9, 2015 Report Share Posted August 9, 2015 No need to dril out the flange if you use one of these: 5 Link to comment Share on other sites More sharing options...
oz thumper Posted August 10, 2015 Report Share Posted August 10, 2015 Hi everyone. The 2 exhaust studs on my TY175 have been butchered by the previous owner so it looks like I am going to have to helicoil them. I just thought I would check on here to see if anybody else has done them and if there is anything I should watch out for.Thanks. TimeSert bushes are more reliable than Helicoil and available in a range of lengths to suit the depth of the original hole. Will keep thread diameter as standard if you are concerned about oversize. Link to comment Share on other sites More sharing options...
jon v8 Posted August 10, 2015 Report Share Posted August 10, 2015 The main thing is to keep whatever drilling and tapping operations inline with the original hole.Go off centre and you will end up with problems. I use Cross thread inserts which are made very locally to me,excellent product. I also have some Recoil ones which I think were an Aussie product, but I see they are now owned by Alcoa. I'd try to keep to a standard parallel stud if poss, going larger will limit options later on. My first sentence is by far the most important whichever solution you use. Good luck. Link to comment Share on other sites More sharing options...
jc2 Posted August 10, 2015 Report Share Posted August 10, 2015 No need to dril out the flange if you use one of these: What do you call these things (above)? 2 Link to comment Share on other sites More sharing options...
guys Posted August 11, 2015 Report Share Posted August 11, 2015 What do you call these things (above)? Step stud (or reducing stud) Link to comment Share on other sites More sharing options...
jc2 Posted August 12, 2015 Report Share Posted August 12, 2015 Thanks. Who sells them? (google didn't help much) Link to comment Share on other sites More sharing options...
guys Posted August 12, 2015 Report Share Posted August 12, 2015 http://store.034motorsport.com/universal/universal-parts/fittings-hardware/bolts-nuts-studs.html http://www.germansupply.com/xcart/customer/home.php?cat=286&page=6 https://www.belmetric.com/metric-studs-metric-step-studs-6810mm-c-9_73.html Or some one with a lathe could make them. 2 Link to comment Share on other sites More sharing options...
anthony121 Posted August 12, 2015 Author Report Share Posted August 12, 2015 Hi again thanks for the replies,I went for the helicoil solution and had no problems, nice tight exhaust again. 1 Link to comment Share on other sites More sharing options...
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