Exhaust manifold- holed…

[asd2001]

Reckon these are fixable? Anyone got a spare set lying around

[phillpot]

Looks repairable if that's all that is wrong with it. Find someone who knows what he's doing, not some some Bozo who's going to blow holes in it with his Mig

[steviegtr]

I would be tempted to overpatch the hole rather than try & weld it as is. Tig would be my goto. Probably cos I have one.
Steve.

[v8s4me]

I'd go with a patch as well although you'd have to be very careful with welding as you've no way of knowing how much of the tube wall is left on the inside so it would be all too easy to blow through.

You might be better to get a patch brazed over.

[GreenV8S]

That isn't a location I'd expect to see accelerated corrosion, so if it's perforated there I'd assume the remainder was also thin. If you do successfully patch it, I'd consider that a temporary repair to keep you on the road while you locate a replacement pair of manifolds.

[poprock]

Hope you don’t mind me expanding on this thread instead of starting another.

Does anyone know where’s best to go shopping for new manifolds? I’ve been looking at getting some made locally, but if there’s the option to buy off the shelf, I’d be interested …

[TVR-Stu]

ACT stock them and possibly Motoclan. Quite spendy though!

https://www.actproducts.co.uk/product-category/aut...

[poprock]

That gives me a price comparison versus having them fabricated, at least! Good to know.

[mk1fan]

The original design on the non-CAT 2.9 engined S was arwful so if you are going down the route of custom build then build out the bad bits. I would shorten the primaries so they can be joined higher up. I'd then have a socket / ball type flange connection to the hockey sticks. The hockey sticks made from a mandrel bent pipe to allow for the flange connector to be added nearer the bend. This will raise them up nearer the chassis reducing the chance of them grounding out.

If you're going to leave the car with the exhaust maker then make sure your engine mounts are new.

[GreenV8S]

mk1fan said:

If you're going to leave the car with the exhaust maker then make sure your engine mounts are new.

That's an important point.