ivorybull Posted December 12, 2010 Report Share Posted December 12, 2010 Hi I was getting on great restoring my 1978 Ty175 when today I kicked it over and the kick start spun round and cracked the engine case. I had kicked it over a few times over the last week since I got it going and it was OK but the kick start would fail to reset occasionally. So I have a couple of questions Firstly, why did this happen? Secondly, how easy is it to weld the cracked case? Thanks Iain Quote Link to comment Share on other sites More sharing options...
gazzaecowarrior Posted December 12, 2010 Report Share Posted December 12, 2010 This problem was so common with TY's that my local shop use to have an exchange service for the damaged casing. From what i remember it's ok to weld. I've got a restored TY myself now and I'm very carefull kicking it over as my cases are polished and crack free. I've even set the kickstart back a few turns on the splines so that it doiesn't jolt forward. This does however lessen your kicking arc but it's beter than a cracked casing. Quote Link to comment Share on other sites More sharing options...
ivorybull Posted December 12, 2010 Author Report Share Posted December 12, 2010 I had heard that it was a common problem, but the kickstart did not return and hit the case it continued rotating and hit the side case from the underneath. Quote Link to comment Share on other sites More sharing options...
alan_nc Posted December 12, 2010 Report Share Posted December 12, 2010 Welding (actually heliarcing) the cases is simple for a good welder. You will have to split the cases again and clean them very good. Oh, it will show, you can't grind or polish it out. Look a some of the work the welder has done on aluminum before you let him do your cases. Alan Quote Link to comment Share on other sites More sharing options...
feetupfun Posted December 13, 2010 Report Share Posted December 13, 2010 Before you get the case welded, fix the return stop mechanism or it will do it again. The stop device is on the kickstart shaft and the usual failure mode is that it slips (rotates on the shaft). You can fix it by getting a new kickstart shaft. The weld repair can be made smooth on the outside and can be poilshed but may still remain visible due to the colour of the weld metal being slightly different to the parent metal. Quote Link to comment Share on other sites More sharing options...
ivorybull Posted December 20, 2010 Author Report Share Posted December 20, 2010 Does anyone know if the crank case cover on a DT125 the same as the TY175? They look very similar. Quote Link to comment Share on other sites More sharing options...
andy.t Posted December 20, 2010 Report Share Posted December 20, 2010 Does anyone know if the crank case cover on a DT125 the same as the TY175? They look very similar. Yes the old dt125/175 cover will fit and I think there is another one.. the yz125 which should fit but they are very hard to come by in the UK. Quote Link to comment Share on other sites More sharing options...
ducman Posted December 20, 2010 Report Share Posted December 20, 2010 Yes the old dt125/175 cover will fit and I think there is another one.. the yz125 which should fit but they are very hard to come by in the UK. Yz 125 from 1976 will fit,that is the only yZ year that will fitt,have a look on my 175. Chrs:Mike Quote Link to comment Share on other sites More sharing options...
ivorybull Posted December 20, 2010 Author Report Share Posted December 20, 2010 Thanks for the advise, I cracked my case so I'm looking for a replacement. Hopefully the DT125 will do the job. I would attach a picture of it if I could work out how??? Quote Link to comment Share on other sites More sharing options...
ducman Posted December 21, 2010 Report Share Posted December 21, 2010 Here you have a pic of my 175 with the YZ Case. Chrs:Mike Quote Link to comment Share on other sites More sharing options...
ivorybull Posted January 6, 2011 Author Report Share Posted January 6, 2011 I bought the DT 125 crankcase cover and tried it today. It looks identical but does not fit!!!! The holes are in slightly different places, some line up but a couple don't. Back to the search for another case...... Quote Link to comment Share on other sites More sharing options...
ducman Posted January 7, 2011 Report Share Posted January 7, 2011 I bought the DT 125 crankcase cover and tried it today. It looks identical but does not fit!!!! The holes are in slightly different places, some line up but a couple don't. Back to the search for another case...... Only 1976 will fitt YZ or DT,doesent matter. Chrs:Mike Quote Link to comment Share on other sites More sharing options...
ivorybull Posted January 31, 2011 Author Report Share Posted January 31, 2011 After struggling to get a TY175 clutch cover or any of the alternatives recommended and being quoted up to Quote Link to comment Share on other sites More sharing options...
pheonix_tat Posted November 16, 2011 Report Share Posted November 16, 2011 Hi Iain I have the same problem and have ordered one from Independent Cycles (hasn't arrived yet). Looks like the same one. Was yours the same as this? http://www.ebay.co.uk/itm/380322375332?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 Chrs Rich Quote Link to comment Share on other sites More sharing options...
ivorybull Posted November 17, 2011 Author Report Share Posted November 17, 2011 Hi Rich Yes mine looked just like that. It was in really good condition and worth the money. I could not see any difference between the old one an the new one apart from the colour as they come painted black. I never resolved my kick start issues and due to having too many other projects sold it on to someone else. The only area I would check on the crank case cover is the distance between the crank case and the cover internal flange where the kickstart goes. I'm 99.9% certain it was identical but just worth checking as this could cause an issue. Regards Iain Hi Iain I have the same problem and have ordered one from Independent Cycles (hasn't arrived yet). Looks like the same one. Was yours the same as this? http://www.ebay.co.uk/itm/380322375332?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649 Chrs Rich Quote Link to comment Share on other sites More sharing options...
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