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New Here...help With Info For Rebuild!


The_MuffinMan25
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Hello,

To start off I have a 95' Nissan 240sx *not silvia* that had a RB20DET but my ceramic exhaust wheel exploded and seems to of blown my top rings on cylinder 3 for sure. I picked up 2 R34 RB25DET NEO's. I'll be using the RB20 gearbox and accesories.

I've been researching but am a little stuck on parts decision because info is not so solid when it comes to the NEO RB Motors here in the states *USA*

The R34GTT NEO's use RB26 Rods so my rod bearing choice is ACL RB26 Bearings http://www.frsport.com/ACL-6B2960H-X-Race-Rod-Bearing-Set-RB26DETT-RB25-DET_p_9562.html *I got that right yes?*

I'm not sure about the Main *Crank* Bearing choice. I'm guessing I use RB25 bearings http://www.frsport.com/ACL-7M2394H-X-Race-Main-Bearing-Set-Nissan-RB20DET-RB25DET_p_12470.html

Tho Tomei and Cosworth list Main Bearings as 25/26...so I'm looking for clarification.

As for piston rings do the NEO's use standard RB25 Rings http://www.frsport.com/Genuine-OEM-Nissan-Piston-Rings-Set-RB25DET_p_18630.html I know NE0's have a different piston dome design but I assume they are the same diameter since it's still a 2.5L (I assume the RB26 Rods are what bump up the NEO's CR (comp ratio) compared to a normal RB25DET or just the piston design)

As for a engine gasket kit I was led to believe I'd use a OEM RB25DET kit http://www.frsport.com/Genuine-OEM-Nissan-Complete-Engine-Gasket-Kit--Set--RB25DE-RB25DET_p_9323.html

I know the AAC Valve along with a few other gaskets are different because of the NEO head using different pieces, but the actual blocks are identical. (Tho I discovered using an RB20 alternator on the NEO block requires me to use a longer alt belt as the RB20 belt isn't long enough, also the RB25's PS Pump has a different size outlet, any other small differences you know of I'll encounter?)

Any help you can give to me would me greatly appreciated as the resources are slim for ppl with reliable info.

Sincerly,

Tim

P.S.- If anyone could post pictures of their NEO6's for me I'd really appreciate it, I believe I'm missing some sensors/parts on the motor.

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