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 Post subject: Helicoil plug threads
 Post Posted: Sun Feb 04, 2018 9:03 pm 
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I need to helicoil one of the spark plug holes (the one thats a bugger to get to!).
Is there any way to do this in situ or does the engine have to come out and head off?
Any suggestions for an engineer to sort it in Croydon/Surrey area?
Thanks, Bob


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 Post Posted: Mon Feb 05, 2018 1:30 pm 
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Oh. That's PITA. I don't really imagine a way to helicoil it without removing the engine head. I believe the head can be removed with the engine still in the frame. You will only have to replace the gaskets.

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 Post Posted: Mon Feb 05, 2018 6:57 pm 
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If it's a bugger to get there with a spark plug, it will be even worse to get there with a helicoil tool. The second reason is that the chips from the drill would get into the engine.

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Michael

1998 CB600F PC34
2003 CB900F SC48
2001 CB500S PC32
1981 XL185S L185S


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 Post Posted: Mon Feb 05, 2018 8:45 pm 
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Well there are ways of stopping swarf going down the plug hole but it prob does need to come off.
Any ideas how the head comes off with engine in place? It looks unlikely. I presume theres a way of withdrawing the studs?


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 Post Posted: Mon Feb 05, 2018 9:10 pm 
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We are talking about the PC34/36 series, aren't we?
Yes, according to the manual it should be possible to remove the head while the engine is built-in.
Exhaust, carbs, cams, PAIR system and radiator/fan must be removed first.

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Michael

1998 CB600F PC34
2003 CB900F SC48
2001 CB500S PC32
1981 XL185S L185S


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 Post Posted: Tue Feb 06, 2018 7:20 am 
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No, it"s a PC41 (2010 F9). Is it still possible? There does appear very little space even for withdrawing studs.


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 Post Posted: Tue Feb 06, 2018 10:28 am 
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Well, I do not know the details about the PC41. However, if you remove the top-end-cover and the camshafts, it could be possible.

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Cheers,
Michael

1998 CB600F PC34
2003 CB900F SC48
2001 CB500S PC32
1981 XL185S L185S


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 Post Posted: Sat Feb 10, 2018 6:08 pm 
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Location: Surrey
You're not far from tippets in Tolworth and they are not going to mess it up.

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 Post Posted: Sat Feb 10, 2018 6:09 pm 
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Or there is dobles

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 Post Posted: Sun Feb 11, 2018 3:30 am 
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Well I've been having a read up of the manual and apparently the head can be removed with the engine still in the frame. I've found an engineer a few miles away who can sort the helicoil so I have a plan!


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