skyguy61 Posted December 6, 2006 Share Posted December 6, 2006 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 Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/ Share on other sites More sharing options...
RB30-POWER Posted December 6, 2006 Share Posted December 6, 2006 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. Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2730901 Share on other sites More sharing options...
Dose Pipe Sutututu Posted December 6, 2006 Share Posted December 6, 2006 NEO, newer & better internals, apparently pushes 206kW at the fly stock..! Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2731503 Share on other sites More sharing options...
LTHLRB Posted December 6, 2006 Share Posted December 6, 2006 so the neos have the same lifters and stuff as the 26 head? like all solid? Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2731539 Share on other sites More sharing options...
Adriano Posted December 6, 2006 Share Posted December 6, 2006 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. Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2731755 Share on other sites More sharing options...
Adriano Posted December 6, 2006 Share Posted December 6, 2006 LTHLRB said: so the neos have the same lifters and stuff as the 26 head? like all solid? They are both solid, thats the only similarity Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2731756 Share on other sites More sharing options...
`nigno Posted December 6, 2006 Share Posted December 6, 2006 RB30-POWER said: 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. Adriano said: 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 Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2731771 Share on other sites More sharing options...
Gav Posted December 6, 2006 Share Posted December 6, 2006 (edited) skyguy61 said: 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 Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2731774 Share on other sites More sharing options...
skyguy61 Posted December 7, 2006 Author Share Posted December 7, 2006 Gav said: Series 1 is heavier and contains more lugs to attach the chain to, therefore a much better boat anchor.QED Thats funny Gav ,cheers Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2733317 Share on other sites More sharing options...
N I B Posted December 7, 2006 Share Posted December 7, 2006 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. Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2733325 Share on other sites More sharing options...
mad082 Posted December 7, 2006 Share Posted December 7, 2006 (edited) 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 Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2733455 Share on other sites More sharing options...
Adriano Posted December 7, 2006 Share Posted December 7, 2006 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 Link to comment https://www.sau.com.au/forums/topic/146237-whats-better-neorb25-or-earlier-series-12-engines/#findComment-2733823 Share on other sites More sharing options...
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