vk45de and vk56de compatibility

Discuss topics related to the VH41DE, VH45DE, VK45DE, and VK56DE engines.
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drftnassmofo
Posts: 528
Joined: Sat Sep 04, 2004 9:01 pm
Car: 84 s12 ca18et-TRADED
85 s12 ca18et-SOLD
92 fastback-SOLD
91 fastback-SOLD
90 coupe KADE swap-SOLD
06 Infiniti M45

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Does anyone know and have proof of the differences between these two blocks? Are they the same?!

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konatown
Posts: 357
Joined: Tue Aug 22, 2006 10:12 am
Car: 1994 Infiniti Q45t
2010 Genesis Coupe
Location: Indiana

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VK56DEBore 98mmStroke 92mmCrank main bearing dia. 63.95mmCrank rod bearing dia 53.96mmRod length, C-C 154.5mm

VH/VK45DE Bore 93mm

VH45/VK45;Rod Length (center dist): 147.0Rod Stroke Ratio: 1.778 (82.7mm stroke)Pin dia. w/bushing: 22.0Rod big end dia. : 55.0

VH41;Rod Length (center dist): 147.0Rod Stroke Ratio: 1.934 (76mm stroke)Pin dia. w/bushing: 22.0Rod big end dia. : 55.0

VK56;Rod Length (center dist): 154.5Rod Stroke Ratio: 1.679 (92mm stroke)Pin dia. w/bushing: 22.0Rod big end dia. : 57.0
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User avatar
drftnassmofo
Posts: 528
Joined: Sat Sep 04, 2004 9:01 pm
Car: 84 s12 ca18et-TRADED
85 s12 ca18et-SOLD
92 fastback-SOLD
91 fastback-SOLD
90 coupe KADE swap-SOLD
06 Infiniti M45

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okay! thanks a lot, you've just confirmed that i need a vk56 block. i wann switch heads and turn my 4.5 into a 5.6 with vvt
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