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Difference Between Neo Rb25det And Neo Rb25de Cylinder Head

aaron1259

By aaron1259,
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aaron1259 Explorer

aaron1259

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Posted

I got a NEO rb25de long motor cheap and was planning to drop the rb25de head onto my neo det block, I am planning to put 260 Poncams and valve springs and titanium retainers into the de.

I know there some differences in the blocks like oil squirters, are the heads the same?

aaron1259 Explorer

aaron1259

Posted
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Posted (edited)

The de head is a lot cleaner and newer, the det needs new valve guides and looks really unhealthy, the cam cradles are pretty badly scored.

Would it be better just to reco the det head?

Edited by aaron1259
Dobz Experienced

Dobz

Posted
Posted

rb25de neo are much smaller. Nissan wanted to increase airspeed to improve cylinder filling on the de. They can be ported out a fair bit though they can't be ported to the full rb25det port size unless you want to screw around with welding and machining.

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