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Rb25Det Head Welded, Rb20 Cams, Sensors, Ecu Etc On Rb30. Work?

joe blo

By joe blo,
in Engines & Forced Induction

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joe blo Experienced

joe blo

Posted
Posted

hi mates. just wondering if my idea will work.

have a rb20det in r32. thinkn if i get a rb25 head and weld the front hole so it joins up properly to the block and put the rb20 cams and sensors and cam gears and everything like powersteering alt etc on to make a 25-30. so i can use the rb20 ecu and not have to do any wiring changes and not worry bout vct etc.

will that work?

thinkn just a safc to fix it up abit using the vg30 turbo and everything currently on the 20. maybe bigger injectors

joe blo Experienced

joe blo

Posted
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Posted

thats an option but they not too common to buy.

what im thinking is that i will need to get the rb25 head resurfaced so gotta pull it apart anyway so was thinkin il put the rb20 stuff in when that gets done so no extra expense there. the hole will cost little to no money to get welded at that time also so its not any stuffing around.

some bigger injectors and probably will go nistune after all for that side of things. just wanna know if my head combo will work etc. coz ive been reading people put rb20 cam on the vct cam to remove it. if i rb25de r32 head was to pop up id go it for sure but they have problems with valve float or something apparently so gotta spend a few hundred for springs if i go that route also.

so wanna know if itl work? maybe im silly but

StevenCJR31 Veteran

StevenCJR31

Posted
Posted

thats an option but they not too common to buy.

what im thinking is that i will need to get the rb25 head resurfaced so gotta pull it apart anyway so was thinkin il put the rb20 stuff in when that gets done so no extra expense there. the hole will cost little to no money to get welded at that time also so its not any stuffing around.

some bigger injectors and probably will go nistune after all for that side of things. just wanna know if my head combo will work etc. coz ive been reading people put rb20 cam on the vct cam to remove it. if i rb25de r32 head was to pop up id go it for sure but they have problems with valve float or something apparently so gotta spend a few hundred for springs if i go that route also.

so wanna know if itl work? maybe im silly but

if you use the R32 RB25DE head then you will need to use the matching intake manifold

StevenCJR31 Veteran

StevenCJR31

Posted
Posted

1000cc bigger capacity. Head is way bigger. By time you stuffed around you could of done it properly.

Just get a R32 RB25DE head

what about the 26 head? do all the water and oil holes line up with the 30 bottom end?

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