Hole in block

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Vegard
1275 Cooper S
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Hole in block

Post by Vegard »

I've been doing two blocks today, and I found this differnece between A blocks and A+ blocks.
What is the last hole for?

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littler
998 Cooper
Posts: 293
Joined: Thu Jun 24, 2010 7:11 pm

Re: Hole in block

Post by littler »

oil pressure release valve drilling?

poke about and have a look haha never really looked that closley nore thought about it to be honest.
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