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Question about 2.7l heads
Hi
I have 2 different casting number heads that come from a 2.7L engine...
i have 911.104.342.0R and 911.104.345.0R and the last one have an edge or groove in angle in the combustion chamber and the other have not. And i was not able to find here where thoses two head come from.
My question is... Can i rebuild and install them in my engine...what this groove purpose ?
Thank
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