Tonyloz Posted April 18, 2016 Report Share Posted April 18, 2016 Hi all Just about to refit the cylinder head and cant decide wether to use sealant welseal or whatever on the head gasket Never have in the past on other engine types but thought i would ask first Thanks for your experiances Tony Quote Link to post Share on other sites
Motorsport Mickey Posted April 18, 2016 Report Share Posted April 18, 2016 Wellseal is non setting, so it increases the gasket seal but is easily disassembled without leaving impossible to break "grunge" I always used it on my race engines and also road going units. No problems with it. Mick Richards Quote Link to post Share on other sites
Fireman049 Posted April 18, 2016 Report Share Posted April 18, 2016 (edited) I also used Wellseal when I rebuilt my TR3A engine. Tom. Edited April 19, 2016 by Fireman049 Quote Link to post Share on other sites
Tonyloz Posted April 18, 2016 Author Report Share Posted April 18, 2016 Thanks mick and tom Much appreciated Ill go with the wellseal Tony Quote Link to post Share on other sites
McMuttley Posted April 19, 2016 Report Share Posted April 19, 2016 non-technical / cosmetic advice (as the ladies forum never got set up) this morning I compared the wellseal with the heldite that Revvy sent me - I am deciding which to use on mi exhaust / extractor gaskets. the wellseal is a lighter brown and a lot runnier - in fact it leapt out of the tube - the heldite is a darker brown and slightly more gloopy - but has a rubbish brush Quote Link to post Share on other sites
RogerH Posted April 19, 2016 Report Share Posted April 19, 2016 Hi Austin, do you need jointing compound/sealant on the manifold gasket. I've never used any. Roger Quote Link to post Share on other sites
Guest ntc Posted April 19, 2016 Report Share Posted April 19, 2016 non-technical / cosmetic advice (as the ladies forum never got set up) this morning I compared the wellseal with the heldite that Revvy sent me - I am deciding which to use on mi exhaust / extractor gaskets. the wellseal is a lighter brown and a lot runnier - in fact it leapt out of the tube - the heldite is a darker brown and slightly more gloopy - but has a rubbish brush copperslip. Quote Link to post Share on other sites
Alec Pringle Posted April 19, 2016 Report Share Posted April 19, 2016 If an exhaust gasket or joint needs any gloop (precise technical term here) I prefer Fire Gum for the manifold and Gun Gum downstream on the pipes, as it were . . . . Cheers Alec Quote Link to post Share on other sites
Guest ntc Posted April 19, 2016 Report Share Posted April 19, 2016 If an exhaust gasket or joint needs any gloop (precise technical term here) I prefer Fire Gum for the manifold and Gun Gum downstream on the pipes, as it were . . . . Cheers Alec It will dry out and crack Quote Link to post Share on other sites
Lebro Posted April 19, 2016 Report Share Posted April 19, 2016 Should not need anything if using a new gasket Bob. Quote Link to post Share on other sites
McMuttley Posted April 19, 2016 Report Share Posted April 19, 2016 i am putting coppaslip on my studs, gloop on gaskets, paste on the tubes and mikalor clamps - unlike the previous THIS exhaust is NOT going to leak ! Quote Link to post Share on other sites
Alec Pringle Posted April 19, 2016 Report Share Posted April 19, 2016 " It will dry out and crack " Only if you put it on too thick . . . . . Any surface that needs more than a smidgeon of sealant requires to be fettled to a fit whereby it only needs a smidgeon. Whatever component and whatever sealant, the same principle applies - sealant is no substitute for good workshop practice. Cheers Alec Quote Link to post Share on other sites
Guest ntc Posted April 19, 2016 Report Share Posted April 19, 2016 i am putting coppaslip on my studs, gloop on gaskets, paste on the tubes and mikalor clamps - unlike the previous THIS exhaust is NOT going to leak ! Your choice jointing paste is what it says ie downsteam of the system and as for gun gum Quote Link to post Share on other sites
McMuttley Posted April 19, 2016 Report Share Posted April 19, 2016 interestingly, the smear of heldite that i spread on a oiece of card this morning was enamel hard after sitting in the sun all afternoon ? Quote Link to post Share on other sites
Guest ntc Posted April 19, 2016 Report Share Posted April 19, 2016 interestingly, the smear of heldite that i spread on a oiece of card this morning was enamel hard after sitting in the sun all afternoon ? Exactly so the gasket becomes just a spacer. Quote Link to post Share on other sites
Ian Vincent Posted April 19, 2016 Report Share Posted April 19, 2016 To throw in a curve ball, how about Permatex spray on copper gasket sealant for the exhaust gasket - its supposed to fill any minor imperfections? Rgds Ian Quote Link to post Share on other sites
stuart Posted April 19, 2016 Report Share Posted April 19, 2016 as for gun gum Oi dont knock it thats all thats holding the exhaust together on the Volvo! :lol: Stuart. Quote Link to post Share on other sites
Guest ntc Posted April 19, 2016 Report Share Posted April 19, 2016 Oi dont knock it thats all thats holding the exhaust together on the Volvo! :lol: Stuart. :lol: made my day mate Quote Link to post Share on other sites
Stanpartmanpartwolf Posted April 21, 2016 Report Share Posted April 21, 2016 VHT silicone RTV, brick-red coloured, is a big help on compressed graphite manifold gaskets, particularly if there's a tubular manifold. It can be found in builders' merchants as "flue sealant", in skeleton gun cartridges, for a few bob. Or buy it as "Extreme Ultra Motorsport Liquid BS" in a 50ml toothpaste tube & have your eyes taken out. Quote Link to post Share on other sites
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