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Old 12-Apr-2005, 13:23
dukess1999 dukess1999 is offline
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Stripped threads

There was a constant tiny dribble of fluid from the banjo bolt on my front brake master cylinder, and I've now over tightened it and stripped the thread on the m/c (no need to say - stupid ****).
Does anyone know of a company that can re-thread it - I asume they'd have to drill it out and put a barrel in.

TIA,

Iain
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Old 12-Apr-2005, 13:35
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RickyX RickyX is offline
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I would not recommend repairing the thread of such a critical hydraulic joint. You wouldn't want the repair to fail just as you are entering that favourite corner - just thinking about the consequences makes me feel ill!

Just my opinion though..........

R X
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Old 12-Apr-2005, 13:38
Mr_S Mr_S is offline
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I'd have though you could get a local engineering firm to helicoil it for you.

shouldn't cost too much, probably around £20.00

Although I have a m/cyl from the early model (916 era) without reservoir or lever you can have for £20 inc posting. You could swap over lever and reservoir from yours then.

Or a cheapy upgrade

http://cgi.ebay.co.uk/ws/eBayISAPI.d...6547 109&rd=1
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Old 12-Apr-2005, 13:42
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nelly nelly is offline
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I'd go with Ricky on that one. Don't even contemplate a helicoil in a hydraulic circuit.
The insert won't seal and you'll lose pressure and therefore the brakes. Replacement is the only viable solution i'm afraid.
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Old 12-Apr-2005, 13:48
Walenut Walenut is offline
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There's usually a couple on ebay
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Old 12-Apr-2005, 13:52
Mr_S Mr_S is offline
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The DD boy's are snatching them off eBay for their twin disc conversions!
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Old 12-Apr-2005, 14:00
dukess1999 dukess1999 is offline
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Aargh - radial master down the swanee then!
Thanks for the offer Mr S, I've got a stock brembo I can use for the mo'. I originally tried to fit one of the 749/999 radial ones a while back but it didn't sit with a stock 748 clip-on set up.

Wiser but poorer!
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Old 12-Apr-2005, 14:04
Mr_S Mr_S is offline
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Oh bugger, didn't realise it was a radial.

Why not call a hydraulic specialist and see what they suggest?

I'd be very surprised if it can't be repaired as the pressure's not that great compared to some hydraulic pumps out there.

Maybe it's possible to tap the next size up and use a bigger banjo?
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Old 12-Apr-2005, 14:19
neil748r neil748r is offline
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Iain,

Give James Walters at Brembo UK a call on 01908 220777 for the definitve answer about repairing.

Strongly suspect it's new M/C time though.

Cheers, Neil.
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Old 12-Apr-2005, 15:05
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rcgbob44 rcgbob44 is offline
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If its done properly I can see no reason at all why a Heli coil insert would not work in a master cylinder.
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