Whats Better Neorb25 Or Earlier Series 1&2 Engines

[skyguy61]

Hi All,

i thought it would be good to get your thoughts on this from you guys on which RB25 is the pick of them all cheers

[RB30-POWER]

The NEO is obviously the pick, with the better VCT, bigger turbo, bigger rods and solid top end etc...

However, if you were considering bolting the head to an RB30 bottom end down the track, don't choose the NEO RB25 now, choose the R33 RB25DET.

Otherwise NEO all the way.

[Dose Pipe Sutututu]

NEO, newer & better internals, apparently pushes 206kW at the fly stock..!

[LTHLRB]

so the neos have the same lifters and stuff as the 26 head? like all solid?

[Adriano]

However, if you were considering bolting the head to an RB30 bottom end down the track, don't choose the NEO RB25 now, choose the R33 RB25DET.

Why? I think the NEO works better.

[Adriano]

so the neos have the same lifters and stuff as the 26 head? like all solid?

They are both solid, thats the only similarity

[`nigno]

The NEO is obviously the pick, with the better VCT, bigger turbo, bigger rods and solid top end etc...

However, if you were considering bolting the head to an RB30 bottom end down the track, don't choose the NEO RB25 now, choose the R33 RB25DET.

Otherwise NEO all the way.

Totally Agree.

However, if you were considering bolting the head to an RB30 bottom end down the track, don't choose the NEO RB25 now, choose the R33 RB25DET.

Why? I think the NEO works better.

Coz unless you wanna spend the time f**king around getting VCT to work (oil feed etc), or getting rid of it then the NA RB25DE head is the way to go

[Gav]

Hi All,

i thought it would be good to get your thoughts on this from you guys on which RB25 is the pick of them all cheers

Series 1 is heavier and contains more lugs to attach the chain to, therefore a much better boat anchor.

QED

Edited December 6, 2006 by Gav

[skyguy61]

Series 1 is heavier and contains more lugs to attach the chain to, therefore a much better boat anchor.

QED

Thats funny Gav ,cheers

[N I B]

NEOs are a later pollution spec engine that ping like bastards.

Try running the same topend timing in a NEO to the earlyer 25s?no chance.

So me a NEO with 26 rods as everyone ive pulled down sofar stillhas the same old 25 rods.

[mad082]

i thought the non neo motors were easier to get power out of since they didn't have as much pollution crap done to them. also thought the neo had a head that didn't flow as well (not sure if it was to do with cams, valves or general design), and smaller injectors.

but i may be wrong.

Edited December 7, 2006 by mad082

[Adriano]

Coz unless you wanna spend the time f**king around getting VCT to work (oil feed etc), or getting rid of it then the NA RB25DE head is the way to go

Its one grub screw and one oil line, run an r34 computer