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Registered
Join Date: Jun 2007
Posts: 29
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81 924 shortblock turbo or not????
bought a 81 shortblock for my 77 the 81 pistons are different the recess is offset and valve recess is deeper is this a turbo block if so can i use it how do you tell if block and head is turbo or not
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08-10-2007, 05:11 PM
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winter-hater club member
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
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try 924board.org. folks there know a lot more about the 924's. although there are very knowledgeable people here, as well.
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2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester "COOL PRIUS!" - Nobody Ever |
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08-10-2007, 05:41 PM
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Registered
Join Date: Apr 2002
Location: Cambridge, MA
Posts: 555
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81na pistons are different - 9.0:1 compression instead of the 8.0:1 (or 8.5:1 if it's a '77.5 release) pistons. 931's don't have valve recesses, they're interference engines. No use in cutting recesses for the valves to not collide *as much* if the timing belt snaps!
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1991 964 C4 Cabriolet - drop-top pylon destroyer |
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08-11-2007, 05:10 PM
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