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Post by malakiblunt on May 23, 2008 8:53:45 GMT -5
been trying to undo the rocker shaft bolts but ther frozen solid, every other nut /bolt on this motor has come of no problems, any tips for shifting them? ive leant on the spanner till it feels like the headl round off with out so much as a squeek
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sven
Full Member
Posts: 166
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Post by sven on May 23, 2008 9:52:46 GMT -5
Don't understand... are you talking about the rocker pivots themselves
or just the plugs?
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Post by malakiblunt on May 23, 2008 10:30:31 GMT -5
oh yeah sorry the plugs, ( i havent got them undone yet to find out that ther just plugs ;D)
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sven
Full Member
Posts: 166
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Post by sven on May 23, 2008 11:38:22 GMT -5
Well there's nothing special about them (no inner locks or so),
it's just two big threads tightened in aluminium.
If the rockerbox is already removed, you might better clamp it
on your workbench before you try to open, also some heat may
be helpful, but isn't necessary (normally).
Regards
Sven
P.S.: if you got em out, the rocker-pivots have an internal M6 thread,
so you can tear them out with a longer M6 stud.
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Post by malakiblunt on May 23, 2008 11:58:04 GMT -5
Thanks Sven
i just wanted to cheak ther wasnt some thing i was missing, problem is the heads are a bit small, more like 16.5mm so i cant get a spanner that fits, ther staring to round the corners off, im going to try putting it in my lathes 3jaw chuck, if that fails i might have to resort to welding a breaker bar onto the head.
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sven
Full Member
Posts: 166
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Post by sven on May 23, 2008 12:16:29 GMT -5
If it all fails, you can bore & sink(?) the heads off, these bolts are
hollow (approx. d8mm), the rest of the thread must come out easy,
cause it's all in the engine's oil.
Regards
Sven
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Post by malakiblunt on May 23, 2008 12:28:07 GMT -5
ive lossened exhast plug in the lathe chuck , pushing on it till i saw spots in front of my eyes and it let go with a real bang, im now waitng for my poor sore fingers to recover to try and shift the inlet side!
thanks again for your help Sven.
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Post by stevec5000 on May 23, 2008 13:25:39 GMT -5
What are you talking about, those plugs on the side where the oil lines connect?
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Post by malakiblunt on May 23, 2008 14:14:13 GMT -5
Yes thats right , ther just covers for the pivots the rockers turn on.
Ive finaly undone both of mine , but oh man they were tight!
ive drilled and tapped the exhaust one for an oil line as my 77 bike has never had the mod, though the exhaust rocker is in good conditon, so i geuss ither its been relpaced or this bike has had an easy life.
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