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Old 03-07-2021, 02:36 PM   #16
Broke4speed
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Join Date: Oct 2009
Location: Marionville, Ontario, Canada
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Quote:
Originally Posted by DET17 View Post
Don't all the 16V penta pistons have them? What about the 16V NA engines?
Sure, but they don't NEED them for the engine to run with stock cams, if everything is timed correctly, as mentioned above. It's proper insurance against terrible work/murphy's law though.

Given that even with the reliefs it's an interference engine, it's 50/50 on whether or not the effort is required IMO. In the watercooled VW community, it's commonplace to slap a 16v head on an 8v block and not add reliefs.
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