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Engine Specific Info and Questions => IDI Engine => Topic started by: Riverfurm on June 23, 2008, 02:42:33 pm

Title: Head Cracks
Post by: Riverfurm on June 23, 2008, 02:42:33 pm

I have the head off my 85 1.6 turbo and noticed there are cracks between the valves.  It seems to be in just the aluminum part of the head and not into the seats. Is this a normal wear?

Title: Head Cracks
Post by: zukgod1 on June 23, 2008, 03:11:35 pm

Normal, to a point.

They can crack to far though.

Post up a pic..

Title: Head Cracks
Post by: burn_your_money on June 23, 2008, 06:35:18 pm

the thickness of a dime is a rough guideline for maximum crackage

Title: Head Cracks
Post by: gigaz2 on June 24, 2008, 05:06:07 am

how much millimeters is that?
I think I've read on vw literature that up to 1.5mm was normal, but just between the valves, it can't extend past that.

Title: Head Cracks
Post by: burn_your_money on June 24, 2008, 06:11:11 pm

1mm? I'll have a look in the bentley and see what they say