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Author: Subject: decent silicone sealant
Craigorypeck

posted on 21/12/11 at 11:08 PM Reply With Quote
decent silicone sealant

spent ages trying to seal up my bike carbs - filter backing plate - airbox

Used black RTV sealant but noticed after a few days the excess bits that were rubbed on the work bench would rub off really easily.. so being concerned about losing boost through a badly sealed joint i disassembled to find the muck was doing nothing and pulled off in one piece... argh

so whats the best stuff available to stick/seal all my bits together??
mating faces are minimal.



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austin man

posted on 21/12/11 at 11:17 PM Reply With Quote
If petrol is going to be in contact with it then silicone is the wrong stuff. If not any off the shelf silicone will do you can get clear, white Brown and black plus other colours. If it is going to be in contact with petrol ask at your local motor shop, I used a hermatite red type of sealant o my carbs (petrol resistant)





Life is like a bowl of fruit, funny how all the weird looking ones are left alone

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Craigorypeck

posted on 21/12/11 at 11:26 PM Reply With Quote
I suppose it will be in contact with petrol mist... would cleaning all sufaces with electrical spray help adhesion??
I'll try said sealant too, ta

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austin man

posted on 21/12/11 at 11:46 PM Reply With Quote
I had problems when I used it to seal carbs to the manifols and sealing around the tank sender the petrol appeared to rot the silicone if its air boc to TBs it should be ok





Life is like a bowl of fruit, funny how all the weird looking ones are left alone

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Craigorypeck

posted on 22/12/11 at 02:32 AM Reply With Quote
cheers, loctite have a shed load of different grade sealants too, more reading me thinks
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Bare

posted on 22/12/11 at 03:45 AM Reply With Quote
Try Threebond 1104 Or if feeling Flush 1211 (which is a sillycone sealant but IS fuel resistant ..one of the very few)
Bearing in mind that Three bond can also be found relabeled as: Yamabond, Suzukibond, Hondabond and even Ducatibond.. Do you think it might work ??

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r1_pete

posted on 22/12/11 at 09:51 AM Reply With Quote
Lambda sensors don't like being contaminated with silicone, so another reason not to use it on inlet / exhaust if you have sensors.
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Volvorsport

posted on 22/12/11 at 10:50 AM Reply With Quote
polyurethane......

but you might not split it again.....





www.dbsmotorsport.co.uk
getting dirty under a bus

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GeoffT

posted on 22/12/11 at 11:25 AM Reply With Quote
quote:

Lambda sensors don't like being contaminated with silicone, so another reason not to use it on inlet / exhaust if you have sensors.



.....I remember reading that even a whiff of silicon can destroy a lambda sensor, don't know how true that really is but obviously best avoided if possible.

I've often wondered about the seam sealers used in bodyshops. etc, for this sort of application, it certainly seems to stay where it's put without any sign of peeling or shrinking.

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Craigorypeck

posted on 22/12/11 at 11:38 AM Reply With Quote
theres is an innovate wide band in the system... that 3 bond stuff looks impressive.
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