staffy
Junior Member
Posts: 92
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Post by staffy on Dec 9, 2006 2:14:42 GMT -5
A quick one. There's supposed to be two bolts holding the header pipe on isn't there? Mines got a bolt at the bottom and the top has a heavy spring attached to a cooling fin and a bolt welded to the pipe! Looks nothing like that in the manual. I just hope that i can tap the old bolt out (not there) and fit a new one!!!
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staffy
Junior Member
Posts: 92
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Post by staffy on Dec 10, 2006 3:13:42 GMT -5
Ok i took the pipe off and found this is what it looks like:  This is it close up after hitting it with a wire brush:  My problem is that strong spring that was holding the exhaust on has snapped while i tried to put it all back together. Trying to find a replacement junk spring to replace this one will be near impossible. I now have to fix it (grrr). Judging by the look of where the bolt should be it's all welded and basically cactus . . . . so . . . . . if i put a new head on to the existing motor do i need to get everything checked for levelling? I don't think i'll be able to tap the hole out. Spewin. Anyone got a spare head? |
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Post by fenz on Dec 10, 2006 5:09:31 GMT -5
Looks like the old stud is still there but snapped off.Looks fairly butchered from people trying to drill it out.
You most probably have two choices 1.Get someone to try and drill the rest of the stud out and if there is enough meat there put in a helicoil.
2.Pull the head and take it to an engineering workshop where they can get rid of the rest of the old stud and TIG weld the hole up and re drill/tap the hole.
If removing the head you might as well check the valves and look at the condition of the bore.
Should not to be to costly for the welding repair and with a new head gasket you will be back on the road.
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Post by sjef on Dec 10, 2006 8:42:41 GMT -5
Hallo staffy
you can try to weld an other piece of steel on to the remains of the stud,cool the stud not the head and then try to turn the stud out of the head, it should go easier because of the heat suplied by the welding. have don this several times
regards sjef
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staffy
Junior Member
Posts: 92
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Post by staffy on Dec 10, 2006 20:02:08 GMT -5
Yeah sjef, my neighbour suggested something like that. He figures that if we gently heat it the head will expand at a quicker rate than the stud and we may be able to turn it out. Do ya reckon i can do it on the bike with the head in place? Might be a bit dodgy! I reckon either way the heads gotta come off. Whether i get a new one or manage to fix this one, whats worth checking/cleaning/replacing/tensioning while it's all apart? I've already been making phone calls around the place looking for a head but not having much luck. I'm spewin, first bike, i've had it a week and this happens!!!!  |
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Post by StewRoss on Dec 11, 2006 1:31:09 GMT -5
Hi, It is a problem buying a second hand bike sometimes, you never know who's owned it before. You may be able to do the welding bit but it has been butchered a little already. Might make it difficult to remove. I reckon it's worth a try but you'd need to go to someone who would be really careful, TIG welding might be OK... I could ask a smart guy I know in Adelaide who he'd suggest for the job. If you want me to let me know. Leave a message on my personal area with the suburb you're in and I'll see how I go. SR  |
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Post by fenz on Dec 11, 2006 5:12:34 GMT -5
I fixed the head on my xt by welding up the hole.It is acheivable with the TIG welder and a steady hand.
Way up the cost of the weld repair vs the cost of another head.
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staffy
Junior Member
Posts: 92
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Post by staffy on Dec 11, 2006 9:07:22 GMT -5
I managed to dig up another brake spring that was 90% the same yet slightly softer! I've now fitted it the way the manufacturer didn't intend it but a previous owner did  and i reckon i'll just keep an eye on that oil seeping from the head gasket. When that gets a bit too messy then i'll probably pull the head off and rebuild another one for it. Then i'll start thinking about rings and while thats off...... blah, blah, blah. On second thoughts, stew have a chat with that guy you know, if you need any more pics i can post/email em. I'm in Ascot Park, just off marion road. |
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Post by StewRoss on Dec 18, 2006 5:52:37 GMT -5
Hi, I was just talking to my friend in Adelaide and unfortunately he can't assist. He can't really suggest anyone else either so I'm sorry but I've run out of options in Adelaide. I could suggest Bob Jolly at Wingfield but I understand that he's been very unwell in the last while. It's quite possible that you'll need to remove the head and take it around a few engineering shops. You could also try Hanlon Race Engineering (HRE) in the city..there's another engine place in Nth Adelaide as well that I've used, but I can't recall their name. They do good rebores as well. SR |
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and i reckon i'll just keep an eye on that oil seeping from the head gasket. When that gets a bit too messy then i'll probably pull the head off and rebuild another one for it. Then i'll start thinking about rings and while thats off...... blah, blah, blah. On second thoughts, stew have a chat with that guy you know, if you need any more pics i can post/email em. I'm in Ascot Park, just off marion road.