Classic cars forum & vehicle restoration.
|
Author |
Message |
MikeEdwards
Joined: 25 May 2011 Posts: 2473 Location: South Cheshire
|
Posted: Thu May 18, 2017 6:52 pm Post subject: |
|
|
Miken wrote: | Degreased a high tensile bolt and wound it in by hand with some Loctite 270 threadlocker which the manufacturer produce for "the securing AND sealing of bolts , nuts and studs". |
I think that's the stuff I've got, and never got around to doing the same experiment you did.
The stuff I should have got (and subsequently did get for my rebuild) is Loctite 243 Lock-n-seal, which says "medium strength easily undone with normal hand tools".
That's what I was talking about above - there are many different types of Loctite. |
|
Back to top |
|
|
ukdave2002
Joined: 23 Nov 2007 Posts: 4105 Location: South Cheshire
|
Posted: Fri May 19, 2017 7:44 am Post subject: |
|
|
Head studs stretch slightly every time they are tightened up, which weakens them, so unless you are aware of the studs history it's best to replace them. Modern materials are much improved thus reduce the chance of shearing.
Dace |
|
Back to top |
|
|
Ray White
Joined: 02 Dec 2014 Posts: 6320 Location: Derby
|
Posted: Fri May 19, 2017 8:17 am Post subject: |
|
|
I have just had to order a new set of head studs due mainly to corrosion. I was quite surprised how much thinner they had become. I think I might as well fit new nuts as well. |
|
Back to top |
|
|
colwyn500
Joined: 21 Oct 2012 Posts: 1745 Location: Nairn, Scotland
|
Posted: Mon May 29, 2017 6:55 pm Post subject: |
|
|
[quote="Miken"]
After 8 hours I attempted to dismantle it with a socket spanner.
After fitting a long tube extension I merely succeeded in shearing the bolt off.
WOW! At least you proved the stuff works! There will be applications where that is very useful. But its use on studs in this application is meant simply to stop water from creeping up the threads. So you wouldn't use the high-strength 270, rather the low-strength 222.
You could even use the thread sealant such as 577.
I've used these products frequently and I haven't ever been unable to remove a fixing; a quick run over with the blowtorch is all it needs. |
|
Back to top |
|
|
Miken
Joined: 24 Dec 2012 Posts: 544
|
Posted: Tue May 30, 2017 12:18 pm Post subject: |
|
|
[quote="colwyn500"] Miken wrote: |
After 8 hours I attempted to dismantle it with a socket spanner.
After fitting a long tube extension I merely succeeded in shearing the bolt off.
WOW! At least you proved the stuff works! There will be applications where that is very useful. But its use on studs in this application is meant simply to stop water from creeping up the threads. So you wouldn't use the high-strength 270, rather the low-strength 222.
You could even use the thread sealant such as 577.
I've used these products frequently and I haven't ever been unable to remove a fixing; a quick run over with the blowtorch is all it needs. |
I agree, I'm not quite yet ready to assemble but I think I will use the 577 loctite. I've used it many times on pressurised steam boiler fittings, engine and gearbox drain plugs and compressed air fittings. It always comes apart really easily when required without any application of heat. |
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum
|
php BB powered © php BB Grp.
|