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Crankcase sealant

Posted: Tue Mar 04, 2014 7:35 pm
by Lawman
Just a quick one chaps...Whats the best sealant to use between crankcase halves ? Thumbs Up :smt102

Re: Crankcase sealant

Posted: Tue Mar 04, 2014 8:00 pm
by Kezsam1

Re: Crankcase sealant

Posted: Tue Mar 04, 2014 10:30 pm
by h2bchris
Any good automotive silicon sealant will suffice , dont use strong sealants as you will never get them apart again ! :)

Re: Crankcase sealant

Posted: Wed Mar 05, 2014 7:47 am
by Barrie
h2bchris wrote:Any good automotive silicon sealant will suffice , dont use strong sealants as you will never get them apart again ! :)
NO! wrong do not use silicone near petrol, use the proper thing ,3 bond Hylomar, NOT SILICONE!

Re: Crankcase sealant

Posted: Wed Mar 05, 2014 7:53 am
by scouse
used bathroom sealant on my KH400 about 6 yrs ago, still going strong Thumbs Up

normally use blue hylomar or the grey stuff from simon


Gary T

Re: Crankcase sealant

Posted: Wed Mar 05, 2014 8:10 am
by Dave Lewis
This is what I use and very good too http://www.wurth.co.uk/data/productdocuments/050095.pdf

Re: Crankcase sealant

Posted: Thu Mar 06, 2014 7:34 pm
by Lawman
Thanks for that chaps ...Gone for three bond .A1-R has had issues on L/H cylinder holing piston suspect air leak, Thumbs Up

Re: Crankcase sealant

Posted: Thu Mar 06, 2014 9:56 pm
by Wolfie
Barrie

This is twice now you have come down heavy on Silicone for gaskets like it's the absolute worst thing to ever do to any engine, where do you get your information on there being a problem??

For years, home bike menders have used it in either proper gasket silicone or even bathroom stuff, if you google it.. race engine builders use it all the time, people have done comparisons between it and gasket cements, with peoples preference falling for either types, major manufacturers still sell it for engine sealant, I can find NO reference to there being ANY issues at all..

I'm sure if it caused half of the problems you imply, Holts, Loctite and any number of other manufacturers would have been sued into extinction by now and/or had it off the shelves in double quick time.

So hands up anyone who has had a problem caused by silicone used as engine gasket/sealant? (other than sqeegeed bits in the oil).

Oh and by the way Barrie, if I want to use it on my engine, whether it's a problem or not, it really is none of your fucking business.

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 6:49 am
by Barrie
silicone is perfect when used near oils,.but not with petrol which makes silicone react,try it for yourself,just put a hardened piece of the material in petrol.If you want to walk round with your head up your arse feel free to do so!

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 8:07 am
by Rubbadub
see wolfie, there is that silicon addiction again, we need to do some silicon intervention, sit you down in a room with all of us who care deeply about you and just explain the effects this has on your life, the reality of the damage that the indiscriminate use of bathroom sealant in your life, maybe we should drink some beer (not the point), the point is that you might be using recomended silicon gasket compounds to stick your engine halves together, um.....i forgot where i was going with this......um

oh yeah dont use it to line your Petrol tank, and for feck sake stop chewing lumps of it otherwise you will find yourself standing on a bridge of a container ship brandishing an AK47 and surrounded by the US Navy. And no one wants them in their lives


Just think about it, thats all I ask

/ John (concerned Rubbaduck) :smt006

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 8:08 am
by Mitsui Spy
YOU'RE ALL TALKING BOLLOCKS.
The only stuff to use is Marmite.

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 8:09 am
by Rubbadub
oh and while yer here can you help me wire up that digital dash? :wink:

Mitsui, it dosent cope with the humidity in tropical climates, better use vegemite, or a beef derived extract.
Thumbs Up

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 8:14 am
by Mitsui Spy
Rubbadub wrote:see wolfie, there is that silicon addiction again, we need to do some silicon intervention, sit you down in a room with all of us who care deeply about you and just explain the effects this has on your life, the reality of the damage that the indiscriminate use of bathroom sealant in your life, maybe we should drink some beer (not the point), the point is that you might be using recomended silicon gasket compounds to stick your engine halves together, um.....i forgot where i was going with this......um

oh yeah dont use it to line your Petrol tank, and for feck sake stop chewing lumps of it otherwise you will find yourself standing on a bridge of a container ship brandishing an AK47 and surrounded by the US Navy. And no one wants them in their lives

Just think about it, thats all I ask
Stoppit John you're killing me. :smt044 :smt044 :smt082 :smt005 :lol:

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 8:18 am
by Rubbadub
think i probably need to go an lie down, just read my last 4 posts and am worried I am coming across as frivolous.
I have a really bad cold so maybe I need a big glass of Scotch (scots?) and a lie down.
Actually my shower is leaking, ....where did i put that marmite........... :shock:

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 8:28 am
by Neil the Don
You SHOWER ??????

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 8:40 am
by Rubbadub
i HAVE a shower. No i dont use it cos it leaks. please try and keep up.

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 11:17 am
by malc87
Have a Bath Thumbs Up

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 1:16 pm
by Rubbadub
that leaks too

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 2:33 pm
by Neil the Don
Yeah, my bath does that too. There`s this hole at one end near the botton. Heck of a difficlut getting enough water in to bate in, as it all keeps running out that wee hole.
I`ve heard it can be slowed down by placing a jar of Marmite over the hole. Then it only dribbles out. But I don`t have any Marmite. Would Bovril do ??
Barrie ?? Is Bovril ok for this application ???

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 2:37 pm
by Rubbadub
should be oright if u leave the lid on. otherwise the dog won't leave you alone.....

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 4:58 pm
by Neil the Don
Oh, problem.
My bath doesn`t have a lid. :(

Maybe it`s a Scotch one ?

Re: Crankcase sealant

Posted: Fri Mar 07, 2014 5:02 pm
by Rubbadub
then my Northern friend, Bovril cannot save you. :cry: