Quick question about VK56
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Joined: Aug 2004
Posts: 5,433
From: Montreal, Qc, Canada
Quick question about VK56
Would it be possible to destroke a VK56 using a VH41 crank?
VK56 bore=98 mm stroke=92 mm (same as VQ40)
Thus the 5.6 cant rev very high. But the VH and VK are the same block, right?
VH41 bore=93 mm (same as VQ30) stroke=76 mm
Wouldnt a VH41 crank in a VK56 result in some sort of high revving 4.6L? I mean 76 mm stroke is SHORT, almost as short as a VQ30, so it could theorically rev to 7500-8000. The new 415 hp Porsche flat 6 revs to 8400 stock on a 76 mm stroke.
Im not gonna do it, but it could work, right? Using a full VK56 minus the crank gives you better heads, Ti valves, bolt pattern can accept a 6-speed.
It could also work with a VK45 crank, but with the 98 mm bore it would give you 5.0 liters flat of displacement with the (still pretty short) 82.7 mm stroke.
VK56 bore=98 mm stroke=92 mm (same as VQ40)
Thus the 5.6 cant rev very high. But the VH and VK are the same block, right?
VH41 bore=93 mm (same as VQ30) stroke=76 mm
Wouldnt a VH41 crank in a VK56 result in some sort of high revving 4.6L? I mean 76 mm stroke is SHORT, almost as short as a VQ30, so it could theorically rev to 7500-8000. The new 415 hp Porsche flat 6 revs to 8400 stock on a 76 mm stroke.
Im not gonna do it, but it could work, right? Using a full VK56 minus the crank gives you better heads, Ti valves, bolt pattern can accept a 6-speed.
It could also work with a VK45 crank, but with the 98 mm bore it would give you 5.0 liters flat of displacement with the (still pretty short) 82.7 mm stroke.
Originally Posted by JClaw
Would it be possible to destroke a VK56 using a VH41 crank?
VK56 bore=98 mm stroke=92 mm (same as VQ40)
Thus the 5.6 cant rev very high.
Thus the 5.6 cant rev very high.
But the VH and VK are the same block, right?
VH41 bore=93 mm (same as VQ30) stroke=76 mm
Wouldnt a VH41 crank in a VK56 result in some sort of high revving 4.6L? I mean 76 mm stroke is SHORT, almost as short as a VQ30, so it could theorically rev to 7500-8000. The new 415 hp Porsche flat 6 revs to 8400 stock on a 76 mm stroke.
Im not gonna do it, but it could work, right? Using a full VK56 minus the crank gives you better heads, Ti valves, bolt pattern can accept a 6-speed.
It could also work with a VK45 crank, but with the 98 mm bore it would give you 5.0 liters flat of displacement with the (still pretty short) 82.7 mm stroke.
VH41 bore=93 mm (same as VQ30) stroke=76 mm
Wouldnt a VH41 crank in a VK56 result in some sort of high revving 4.6L? I mean 76 mm stroke is SHORT, almost as short as a VQ30, so it could theorically rev to 7500-8000. The new 415 hp Porsche flat 6 revs to 8400 stock on a 76 mm stroke.
Im not gonna do it, but it could work, right? Using a full VK56 minus the crank gives you better heads, Ti valves, bolt pattern can accept a 6-speed.
It could also work with a VK45 crank, but with the 98 mm bore it would give you 5.0 liters flat of displacement with the (still pretty short) 82.7 mm stroke.
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