rb25 / 26 vvalve train differances

Discuss the RB20, RB25 and RB26 series engines.
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StricNyne
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Joined: Thu Oct 30, 2003 1:11 pm

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just wondering wut main differances tween 25 and 26 heads outside of solid lifters, like are springs interchangable, are valves interchangable, retainers things like that thnx in advance !!!



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StricNyne
Posts: 3725
Joined: Thu Oct 30, 2003 1:11 pm

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sigh.... i cant spell

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StricNyne
Posts: 3725
Joined: Thu Oct 30, 2003 1:11 pm

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bump

Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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Refer to page SD-5 in the FSM. The valves and springs are nothing alike. This is mostly due to the solid lifters in the RB26. Even then the spring rates vary and valve diameters are different (larger for RB26).

To answer your question, I'd say no without modification to your head and installing solid lifters. It would take some work.

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StricNyne
Posts: 3725
Joined: Thu Oct 30, 2003 1:11 pm

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aight cool , sigh, head components to the rb25 are scarce.....

Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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What do you need? I have springs and valves (21/24) for sale.

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StricNyne
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Joined: Thu Oct 30, 2003 1:11 pm

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nah i got tomei valve springs i wanted to get some valves

Sil240
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Joined: Mon Apr 28, 2003 5:26 pm
Car: Nissan S13 "The One Cam Wonder"

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Ferrera Darius has those, just make sure you tell them they're for a 25 and they'll need to make them shorter

He has a thread about it week or 2 ago

Darius
Posts: 4820
Joined: Sun Mar 02, 2003 9:48 am
Car: RB25DET S14 - 665 WHP (SOLD)
Location: Chicagoland

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I know and they still haven't sent mine back to me yet...getting frustrated.


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