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Discussion Starter #1 (Edited)
The head was taken off Taffy's GA25331's engine today.

The engine suffered an overheat due to a sudden loss of coolant at high speed, a broken engine mount pulled the top radiator hose off

A full strip down report next week but in the meantime here's some photos
 

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Discussion Starter #3 (Edited)
Other findings

1. Oil pump bolts below specified torque (that's 3 out of 3 engines that we have)

2. Mild corrosion and pitting on the cylinder bores.

The PO hardly drove this M5 and lived next to the sea front, some of these marks have been there a long time, some are from coolant sitting in the bores from the overheat which surprisingly didn't drain into the sump.

It won't polish out so we'll have to take it to the first size overbore.

3. Mild bow in the head , about 0.5mm

Otherwise nothing surprising or nasty found , Taffy shut the engine down in time
 

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Discussion Starter #4
Taffy had his original M5 radiator modified , now with steel side tanks and hose fittings

It came back today , I haven't had a chance to look at it yet.
 

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It fits perfectly.
Agus and I install it just now
 
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Discussion Starter #6
Now we have a steel radiator neck to work with we'll be going to T-bolt clamps 3/4" wide and using a self locking nut.

I've used these before and are much more sturdy and reliable than the regular worm drive clamps
 

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