toffy Posted February 17, 2011 Share Posted February 17, 2011 hey everyone , i've come to kinda a crossroad with my daily spec drifter thingy , as much as i love the lil rb20 for its unbreakable-ness im getting pretty sick of the severe lack of low down forward motive force.... so i've decided to either whack in a 25det or make it a 30det (just so you know this is kinda my spare car/daily/do while i'm building my other car) . My plan would be to use an average r33 25 head on a 160klm rb30 that's in my umm.. other daily/loaner with a ebay spec T67 and supporting mods . Now , my question is basically , is it worth the extra hassle to make the 25/30 over just whacking in the 25 for an aim of around 280-300rwk , being daily driven (because the n/a auto r31 bores me to sleep) , the rev range i drive in with the rb20 is under 5k 99% of the time so it's not really being thrashed so much. Any advice is appreciated . cheers p.s i have searched but i haven't really found the answer/s i'm seeking , i'm not so much looking for a power comparo , more of a drivability comparo and/or advice cheers Link to comment https://www.sau.com.au/forums/topic/354315-grenade/ Share on other sites More sharing options...
KiwiRS4T Posted February 17, 2011 Share Posted February 17, 2011 RB30 will give you heaps of low end grunt esp off boost c/w 25 Link to comment https://www.sau.com.au/forums/topic/354315-grenade/#findComment-5676164 Share on other sites More sharing options...
toffy Posted February 18, 2011 Author Share Posted February 18, 2011 (edited) yeah cheers mate , i think i've pretty much talked myself into going 2530 combo , i have everything except injectors and the turbo itself. I didn't explain myself very well in the forst post sorry , part of my main worry is reliability, i suppose i'm kinda trying to cut corners and 'do it on the cheap' considering it's more of a side project while i'm saving up for my main project (rips bottom end , hopefully with a 26 head with an aim of around 400rwk hopefully reliably ). Do you guys think the bottom end is strong enough to hold around 280-300rwk with only a basic rebuild? or am i kidding myself? edit: it only needs to live for 12 months Edited February 18, 2011 by toffy Link to comment https://www.sau.com.au/forums/topic/354315-grenade/#findComment-5677309 Share on other sites More sharing options...
JonnoHR31 Posted February 19, 2011 Share Posted February 19, 2011 just keep the tune conservative and it should be fine Link to comment https://www.sau.com.au/forums/topic/354315-grenade/#findComment-5678234 Share on other sites More sharing options...
bubba Posted February 22, 2011 Share Posted February 22, 2011 Do it. Going from a 2L to a 3L there is a HUGE difference in drivability. It's really not very hard and if you are sensible with the build and tuning, it should live a long, healthy life. If you prep the bottom end before hand, then the whole conversion can be done in a weekend (I drove in on a Friday afternoon, had a concert Saturday night and then drove it home about 1am Monday morning). Link to comment https://www.sau.com.au/forums/topic/354315-grenade/#findComment-5682183 Share on other sites More sharing options...
toffy Posted February 23, 2011 Author Share Posted February 23, 2011 cheers guys , it's a goer by the looks of it , the laurel will be off the road as of this w/e. i won't have it done in one weekend though , gunna sell the 20 and box to fund injectors instead of going for the cheap n nasty std - high flowed . i'll post up a thread when i start Link to comment https://www.sau.com.au/forums/topic/354315-grenade/#findComment-5684712 Share on other sites More sharing options...
bubba Posted February 24, 2011 Share Posted February 24, 2011 Good luck! You'll love it! Link to comment https://www.sau.com.au/forums/topic/354315-grenade/#findComment-5685493 Share on other sites More sharing options...
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