is my '84 US S an interference engine - but it's modified

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11-04-2009, 03:47 PM

#16

mark kibort

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I think the only non-interference engines are the OBs. again,I measured the distance of piston to valve clearance at TDC adn it was around .3". you have more than .3" of lift, the valves are going to hit. pretty simple.

mk

Quote:

Originally Posted by IcemanG17

In theory the 84 US is NOT interference......BUT with the mods you speak of in this 928 I would say it is & I also think you should change the belt and waterpump as a precaution....since $300 in parts in far cheaper than a rebuild

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