A solution called "THURMO" containing aluminium particals. will not clog water ways and cooling pipes but will repair cracked heads and leaking head gaskets.
bmwautorepair@hotmail.co.uk
they are the specialist I use, mega helpful , if you're in need I'd give them a try.
This is just a recommendation and not an advert.
M20 Head problems - The Cure
Moderator: martauto
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E30Adam
- Married to the E30 Zone

- Posts: 8483
- Joined: Sun Dec 19, 2004 11:00 pm
- Location: Bournemouth
Rubbish.
There's no way of repairing a cracked head without having it welded and I wouldn't even trust a welded head.
There's no way of repairing a cracked head without having it welded and I wouldn't even trust a welded head.

2.8 Litre M20 powered - Essen Sie meinen Staub biatch
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Simon13
- The longest resto in the world !
- Posts: 22697
- Joined: Mon Jan 10, 2005 11:00 pm
- Location: Camberley, Surrey don't u know
ditto as it would probably crack again next to the weld!E30Adam wrote:Rubbish.
There's no way of repairing a cracked head without having it welded and I wouldn't even trust a welded head.
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tommo320i
- E30 Zone Newbie

- Posts: 221
- Joined: Wed Jan 19, 2005 11:00 pm
If its gone under the camshaft this stuff works! no messing 
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Karan
- Married to the E30 Zone

- Posts: 8004
- Joined: Mon Jan 10, 2005 11:00 pm
- Location: Cheshunt, Hertfordshire
LOL
prob shag the water pump too....
just have regular coolant changes and all will be fine....
prob shag the water pump too....
just have regular coolant changes and all will be fine....
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gareth
- E30 Zone Team Member

- Posts: 11005
- Joined: Tue Jan 11, 2005 11:00 pm
- Location: hastings, east sussex
naah, the best cure for a cracked 2.5 M20 is a M30!!!! 
Sole founder of Fe2O3-12V it's a lifestyle

LSD rebuilding / modification services provided, PM for details

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