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ive sourced a RB30 bottom end of a mate, and has got me thinking,

Im also trying to source a RB25det NEO AWD for my GTS4 33,

Now, i havent been able to find much on this, let alone a NEO

i want to put the NEO 25 head on the Rb30 bottomend.

What will need to be done RE AWD, modified sump?

also any problems with the NEO 25 on the 30 bottom? woul dit be that much diffrent from a no neo 25head going on.

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cheers for the extra reading material,

Ive got Unigroup Engeneering build this for me feb/march next year. They have done this before, Just not in a GTS4, though they would set this up as they would GTR.

Around 6k labour.

If this dosnet work out, The 25det NEO will be going in, And the 30 a little down the track, Just seems better to do it all in one go.

Any other major parts i should supply them apart fromt the 25det neo, and the 30 bottom end?

organising a Front facing plenum, Due the the extra height of the Rb30.

still sorting out the rest of the list

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You or they will have to get the sump adapter plate. Depending on use think about a sump extension and dependant on oil pump and use have a read of the oil control thread. Definitely enlarge and relieve the oil drains and fit restrictors to the feeds. Make provision for a sump breather near the dipstick ...running to a catch can I believe is fine or to the back of the head if you think it works as a drain as well.

Otherwise as per pdf

But - choose pistons carefully for RB30 -neo head combination.

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No one mentioned the fact that u have to cut and shut the belhousing to bolt up to the bottom of the block.

And whats the issue with this? The conversion has been done maney time before. Any particular reason you bring this up?

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