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Something Different? Rb25De Neo R34

Keith w

By Keith w,
in Engines & Forced Induction

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Keith w Enthusiast

Keith w

Posted
Posted

After looking at rb30 conversions using det heads, I was thinking of swapping the head of my NA neo rb25 for the det neo head and running a forward facing inlet plenum. Was wondering if anyone out there has done or heard of anything like this?? I know I'd have to make a custom intake, swap the battery sides and probably run the det AAC/IAC and maybe TPS? Any opinions?

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https://www.sau.com.au/forums/topic/410734-something-different-rb25de-neo-r34/
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dori34 Grand Master

dori34

Posted
Posted

i wouldn't bother! save the money and spend it else where (brakes, diff, suspension etc)

the NA head is made to work in conjunction with the NA block, the DET head will most likely lower the compression and make it drive like a dog.

Keith w Enthusiast

Keith w

Posted
  • Author
Posted

Brakes, suspension has all been upgraded, the only thing I could think of to keep the NA head would be customize the forward facing plenum to suit (the inlet ports that is), could be expensive I know but, I've seen it done.

Captain Natro Grand Master

Captain Natro

Posted
Posted

Being a natro the vertical and central design of the runers is cruicial for making torque, forward facing plenum will result in unequal runner lengths and I'll lose power and mid/low range torque (and being a natro U don't want that)

Det heads as far as I'm aware run the 237 degree cams same as the natro, but unsure if it'd drop the compression (could always use a thinner head gasket)

Mmm if I want to do a 25/30 natro it can be done but your best bet is with a non VCT r32 rb25de head, be prepared to spend a lot of money... And still won't make huge power figures.

  • 4 weeks later...
Captain Natro Grand Master

Captain Natro

Posted
Posted

Hahah, haha, ha , ha... Yer good luck running a 3076 on ur natro high comp engine...don't do that ^^^

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