Hybrid Rb's

[TTT]

RB30/25 or 30/26 seem to be the flavour of the month due to making such good results with small outlay (in some cases), So I've been thinking what else is possible.

and how are they done?

what sort of dollars?

rb24 is made using what?

is the rb20 head usefull on anything other than the rb20 bottom end?

what else, if anyhting, can the rb26 bottom end be used for?

can an RB25 head be bolted to an rb26 bottom end? what would be the end result (obvisouly not as good as the rb26, but would it be better than a stock rb25?)

what happens if an RB25 bottom end is put undre an RB26 head?

can the rb20 bottom end be used with any other head and what would the outcome be?

I'd usually PM this sort of crazy questions to SK, but he probably gets annoyed with all my dumb ideas

so now you can all be part of it..

cheers

[croat]

i also was interested in knowing how a 26 head would go on a RB25 bottom end??

[TTT]

bump.. come on....

[MADGT4]

RB22, 23 and 24, listed here.....

http://www.skylinesaustralia.com/forums/in...topic=34629&hl=

[KamikazeR33]

tommy kaira made the m30, a rb30de which used an rb20de red top head and rb30e bottom end. the result was 230hp which was put into quite a few r31's that they made

[Jago]

tommy kaira made the m30, a rb30de which used an rb20de red top head and rb30e bottom end. the result was 230hp which was put into quite a few r31's that they made

christ that must breathe like crap

i'd also be keen to see/know if a 25 or 26 head can go on a 20 block

[r33_racer]

i wouldnt think a 25 or 26 head would go onto a 20 block cause of the bore sizes. 25, 26 and 30 have same size bore...but a 20 would be a fair way smaller you would think.

[Kaido_RR]

rb26head fits onto rb25block, you can tap the bolt holes as i think the holes in the 26 are abit bigger but it is not needed (something along those lines)

i was looking into getting this done to my rb25, but the cost was abit too much at the time

[D-limo]

Kudos Motorsports have bought in a modded 32 4 door built by "Garage Testarossa" I thinks the name. RB20 head on RB30 bottom end.. Should be interesting

[Abo Bob]

I'm thinking RB20 DET head on RB26 bottom end with 7:1 comrpession ratio and N/A.

What do you think of this combo?

[TTT]

I think you are being sarcazmik

[Beer Baron]

GTST who cares is a RB25 head fits on an RB26 block? it would be a waste of time.

same thing goes the other way around.

also only good combo from an RB20 is RB20. or the RB22, 23 24 ideas, but both still use RB20 head and RB20 block.

RB26 head on RB26 block is the best one i reckon, but certainly RB25 and RB26 heads on RB30 blocks have their merits.

[ellie]

Has anyone on here actually experienced any of these motor combos on the road? Are they a worth while venture (more torque, better top end etc.)? I ask because I actually have a lot of what is required to build one if my motor goes pop and was keen to hear some real world, seat of your pants driving experiences (street and track). SK, you seem to have built a few. What was your initial impression of a well set up and tuned combo and which do you think would be the best for 90% street, 10% track

Cheers in advance

Edited March 3, 2006 by ellie

[TTT]

beer baron.

fair enough.. I was just interested.. not that I'd do anything other than an RB30det due to being a tight arse and wouldn't want to waste money just to be different..

I was just curious.

what about RB25 head on RB20 bottom?

hmmm?

[platinum]

I'm thinking an rb20 block with a nissan patrol rb30 head - carby FTW!

Edited March 3, 2006 by platinum

[grigor]

I think you'd have to have time and money to burn for some of these combinations, but my favourite is a chopped Rb30 block with an Rb20 crank, Rb30 rods & pistons, and Rb25 head.

Would be a bit under 2.5litre and with those long rods should have great combustion properties as well as revving like crazy.

But stacked against all that work, the Rb30det looks the go.

[ellie]

I think going to the 2.5L capacity sounds most appealing using an Rb25 turbo bottom end with an R32 RB25 N/A head. allowing all your Rb20 auxiallaries to be reused with a remaped standard computer! Giving you the extra capacity with out the much larger outlay of a full RB25 swap.

My 2c anyways

[1400r]

my works rb 24 ceffy cranks hard so hard Im thinking of selling my 32 which has more peak power to buy it

[ellie]

Are you able to describe the difference the average jo would feel on the road?

I would be most appreciative

[RedDrifter]

I allways wondered if you could bore out the RB20 Block to fit pistons the same bore as a RB25 and then use the RB25DE head (R32).

Round 2.3-4 lires and my god how it would rev.

Mmmmmnnnn Back to reality. :-)