Thread Lubricant 3M EC377

[Deleted]

The 3.5 V8 manual advises the use of 3M EC377 thread lubricant to assemble V8, especially cylinder head bolts.
Does anyone know where to get some? -- or an equivalent?

Thanks

[harvey]

Try Land Rover dealers, they still work on V8's and SHOULD be using it or something similar. Without it head bolts will snap in the block when you try to remove them after any length of time.(I speak from bitter experience, having removed the heads from an engine that had been assembled without it in the past.)

[harvey]

I've just looked at mine (ooh err missus) it was L/R part no. 608591 (about 20 years ago) and it's 3M ScotchClad "776" Fuel Resistant Coating & Adhesive. 1 litre tin.

All the technical specifications for the above are still on the 3M website, so it should still be available, or at the very least 3M should know of another suitable product.

[Deleted]

i was told by paines engine builders to use copper grease

[glennr]

This may be of help? It mentions 3M EC776 which may be a newer product.

www.v8register.net/subpages/V8NOTE1updated.htm

[harvey]

"776" is the 3M ref. and is as I said earlier still listed on their website.
I would buy the correct sealant, copper grease dries out and although it may keep bolts free initially I wouldn't use it, particularly on the head bolts.
If a job's worth doing it's worth doing properly,and although it will be expensive it's a lot cheaper than removing snapped bolts.

[Deleted]

Thanks for all the suggestions.
I have found another manual which has EC776 as the number.
I just have to find some of that then!!

[johnwp5bcoupe]

Harvey is right use the correct stuff Copper Grease will dry out it is fine if not heated lasts for years

Harvey I have sent a PM.

[glennr]

You can purchase
EC776 Scotchclad Fuel Resistant Coating, from the follwing distributor:
BDK Industrial (Ipswich) Tel: [phone]