Locking exhaust manifold bolts on x-flow in Escort mk1

**Dutchbird** · 01-02-2018, 16:40

What is the best way to lock exhaust manifold bolts on a x-flow?
Can't use studs, as it would be impossible to take the tubular exhaust manifold off with the engine in situ. There is just a few mm space between the manifold and the brake servo bracket (LHD car). Drill the bolt heads and use locking wire or is there a better option?

**Graham** · 01-02-2018, 19:05

lock wire wont keep bolts tight, it will just stop them unscrewing if they come loose

**Gyver** · 01-02-2018, 19:55

How about Nordlock washers? Should be able to cope with the heatcycling i suppose...

/David

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**katana** · 01-02-2018, 20:07

Spring washers should work ok!

**rick deregus** · 01-02-2018, 20:51

Loctite

**Miniliteman** · 01-02-2018, 21:19

Just make sure the threads in the head are good, use new bolts and tighten them.
After mounting mark the bolts with respect to the manifold and check regularly that these are still in the same position.
Wouldn't use Loctite or anything.

**Dyno** · 01-02-2018, 22:07

Originally Posted by katana

Spring washers should work ok!

x2

**Dutchbird** · 02-02-2018, 21:57

Cheers guys,

I will use new bolts with spring washers and retorque the bolts after a few heat cycles. If the bolts work loose, I will use some NL8 Nordlocks.

**piekey** · 03-02-2018, 09:48

Do them up tight JD
run mine for 3000 miles now....all good.
Tubular s/s manifold using stainless cap head bolts tight 'n tidy.

**Fatgadget** · 05-02-2018, 13:48

Originally Posted by rick deregus

Loctite

What sort of Loctite capable of withstanding exhaust manifold temperatures? Anyway what wrong with the old school way of fastening manifolds? Never was an issue was there?