VH45 Valvetrain setup compared to SR20

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Ezekial
Posts: 355
Joined: Sun Nov 28, 2004 4:42 pm
Car: 2001 Nissan 200SX S15

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Has anyone compared the valvetrain setup on both VH45 and SR20?

It looks SIMILAR doesnt it!?

I'm not too familiar with SR20 but i'm trying to get hold of an SR head ... so i can determine if valve springs are the same physical size

If so ... it would be very easy to get uprated springs and perhaps solid lifters for the VH45


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Raxephon
Posts: 1910
Joined: Tue Jul 27, 2004 8:53 am
Car: '04 RX8...for the moment...

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These are measurements taken from my old, ('91), G20 cylinder head.

'91 SR20DE (Micrometer)Valve Spring Height : 49.61mm DecompressedValve Spring Diameter: 29.05 mm Outer__________________ 21.21 mm Inner

'91 VH45DE (FSM)Valve Spring Height: 47.31 mm DecompressedValve Spring Diameter: ("unknown" AKA "I don't know")

Modified by anlasak at 11:23 PM 11/7/2005
Modified by anlasak at 11:25 PM 11/7/2005

John Dixon
Posts: 506
Joined: Tue Nov 16, 2004 9:59 pm
Car: 300ZX-TT Z32

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You can make solid lifters for the VH by stripping down they hydraulics and shimming them out.Should know about uprated springs soon too, as I'll need them in mine.

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Ezekial
Posts: 355
Joined: Sun Nov 28, 2004 4:42 pm
Car: 2001 Nissan 200SX S15

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Great stuff!!

Let me know how you go. I'm going to compare with some SR20, RB26, CA, etc etc ... any common nissan engine!!


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