Author Topic: Clutch cover bolts  (Read 1718 times)

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Offline db9987

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Clutch cover bolts
« on: November 10, 2018, 03:56:02 pm »
Apologies if this has been beaten to death elswhere.... is there a reason I can't replace the alloy 3nm clutch cover bolts with stainless ?
 

Offline TomL

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Re: Clutch cover bolts
« Reply #1 on: November 10, 2018, 06:35:47 pm »
No reason why you shouldn't BUT don't do them up too tight. Only tighen them up to the required torque for the alloy bolts.
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Offline Phmode

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Re: Clutch cover bolts
« Reply #2 on: November 10, 2018, 07:51:40 pm »
What material are they going into?

Offline db9987

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Re: Clutch cover bolts
« Reply #3 on: November 11, 2018, 09:32:54 am »
I think it may be magnesium, if not some type of alloy perhaps ?

I have a jointing compound I  use on my sailboat that's used when using stainless bolts/screws in aluminium and was think to use that with stainless bolts 


Offline raesewell

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Re: Clutch cover bolts
« Reply #4 on: November 11, 2018, 09:35:28 am »
Not sure about jointing compound but aluminium antiseize would be the order of the day.

Offline Phmode

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Re: Clutch cover bolts
« Reply #5 on: November 11, 2018, 11:57:03 am »
Yes, it is the differential metals and UK climate which won't sit well together. The torque for the ally bolts includes some 'twist' to stretch them which is why they recommend new ones every time. A 'decent' engineer would know the correct torque setting but I've no idea where you would find one these days... :)

Offline db9987

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Re: Clutch cover bolts
« Reply #6 on: November 11, 2018, 12:17:11 pm »
The stuff I have from my boat is a pale yellow, almost liquid compound best applied by brush called 'Duralac' - quote:

'Duralac is a highly effective jointing compound which prevents electrolytic corrosion between dissimilar metals typically stainless fitting on an aluminium mast or boom. Ideal for mast fittings, winches, aerials, batteries, bolts, screws, rivets etc. Duralac is indispensable for the sealing of joints between dissimilar metals of all types, including magnesium and its alloys.
Used in the aerospace industry as an essential corrosion inhibiting material wherever dissimilar metals are joined.'



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Re: Clutch cover bolts
« Reply #7 on: November 11, 2018, 01:19:48 pm »
Νo need to use any special compound better yet do not use it.
There is a special tool (dealers have it) that assists to strech bolts at the final turn applying pressure at 90 degrees angle.
If you 're very carefully you do not need even that. Just tide them and at the end give it a final twist. ,
There good for two times use.
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