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*JClaw* · 09-14-2006, 11:41 PM

Not sure if it makes any sense at all but is it possible that Nissan uses the VQ40 block for the VQ35HR? I mean, both the VQ35 and VQ40 have 95.5 mm pistons, the difference is the stroke (VQ35 has an 81.4 mm stroke and the VQ40 has a 92 mm stroke). So they raised the deck height on the VQ40 (not sure on exactly how much).

From what I've read the VQ35HR has longer rods to be able to rev to 7500 safely but still displaces 3498 cc. So they had to raise the deck height. Wouldn't it be dumb for Nissan NOT to use the existing VQ40 block since it already has a raised deck height to accomodate the longer stroke? The 4.0L needs the taller block for its longer stroke and the 3.5LHR needs the taller block to rev safely. Does this make any sense to anyone else?

09-14-2006, 11:41 PM	#1
JClaw Supporting Maxima.org Member 1995 SE Join Date: Aug 2004 Location: Montreal, Qc, Canada iTrader: (17) Posts: 5,420	VQ35HR Block Not sure if it makes any sense at all but is it possible that Nissan uses the VQ40 block for the VQ35HR? I mean, both the VQ35 and VQ40 have 95.5 mm pistons, the difference is the stroke (VQ35 has an 81.4 mm stroke and the VQ40 has a 92 mm stroke). So they raised the deck height on the VQ40 (not sure on exactly how much). From what I've read the VQ35HR has longer rods to be able to rev to 7500 safely but still displaces 3498 cc. So they had to raise the deck height. Wouldn't it be dumb for Nissan NOT to use the existing VQ40 block since it already has a raised deck height to accomodate the longer stroke? The 4.0L needs the taller block for its longer stroke and the 3.5LHR needs the taller block to rev safely. Does this make any sense to anyone else?