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Join Date: Nov 2001
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3.3L turbo cylinders on 3.0L NA

Has anyone ever considered using 97 mm 3.3L cylinders from a turbo motor in a 3.0L engine, making it a 3.3L NA motor? Of course this would require higher compression pistons since orginal CR was 7.5:1, but we already know the cylinders will fit since the cases were the same. Any downside to this idea?

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Old 03-22-2013, 11:01 AM
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The 3.3 cylinders are only finned on one side...most people convert to fully finned cylinders when rebuilding the 3.3's as they cool better/more evenly.
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Old 03-22-2013, 11:08 AM
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You need the crank and rods to do it.
Cylinders all fit the same hole in the case.
The 3.2/3.3 has a different size wrist pin than the 3.0.
95mm cylinders will open to 98 for more cubes.
Bruce
Old 03-22-2013, 11:13 AM
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Right, I did not realize the stroke was longer on the turbo motor. With 70.4 mm stroke, that only gives 3.12L, not really worth it. But this brings another question: Do the longer rods fit the 3.0L crank directly, or was the crank different too?

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1978 SC Targa, DC15 cams, 9.3:1 cr, backdated heat, sport exhaust https://1978sctarga.car.blog/
2014 Cayenne platinum edition
2008 Benz C300 (wife’s)
2010 Honda Civic LX (daughter’s)
Old 03-22-2013, 11:38 AM
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