Mazda Rotary Club

General => General Technical => Topic started by: Myrddin on May 04, 2014, 11:58:03 AM

Title: Rb25 or 2jz into an rx7?
Post by: Myrddin on May 04, 2014, 11:58:03 AM
Right basically I\'ve decided the route I want to go down with my rx7, it\'s gonna be a daily driver/drift car but I\'d like to change the engine. I know a few people have put sr20\'s in before but I\'d like something abit bigger that can take abit more abuse.

So the question is, as above really has anyone ever put a RB or JZ lump into an FD rx7 and if they have what sort of problems did you encounter?

Cheers Andy
Title: Rb25 or 2jz into an rx7?
Post by: re japi on May 04, 2014, 05:13:10 PM
My opinion is that sr20 area crap. :)

Rb or JZ lumbs are good but they are very heavy and big. So one big broblem is that your cars weight distribution will be very different. I think that awesome handling of FD will be gone...
Title: Rb25 or 2jz into an rx7?
Post by: Arnie_O on May 04, 2014, 11:03:00 PM
May be a purest but mad mike don\'t seem to struggle for power. Admit idly he runs a triple
Title: Rb25 or 2jz into an rx7?
Post by: BlitzBoy on May 04, 2014, 11:13:25 PM
why buy an rx7 in first place to put a heavy engine??? confused.com
stick to a S body or skyline i say
plenty people drift rx7s with the rotary engine still place and are reliable
Title: Rb25 or 2jz into an rx7?
Post by: Will66 on May 05, 2014, 08:46:49 AM
What Blitz Said. For the effort you\'ll go to fitting a big straight six into an rx7 you\'d be able to build a very powerful and reliable 13B.
Title: Rb25 or 2jz into an rx7?
Post by: Myrddin on May 05, 2014, 10:39:35 AM
Reliability\'s the main issue to be honest, would like to keep the rotary lump as I used to love my last one, might just have to see how it goes. Coming round to the idea more of a single turbo rotary plus it would give me abit more money to put into it.

I understand what people say with the whole "why not just buy a car with that in allready etc" but like I said in the other forum if nobody done anything different or modified there wouldn\'t be a car scene.
Title: Rb25 or 2jz into an rx7?
Post by: BlitzBoy on May 05, 2014, 04:47:02 PM
the 2jz and rb conversion has been done a few times before in the rx7 they all understeered to fooook which is not what you want in a drift car, single turbo rotary is way to go for a drift rx7, single turbo. clutch type lsd, apexi ecu, good aftermarket rad and intercooler and it will be reliable with a good tune, this what a lot successful Jap drift rx7 cars do in Japan
Title: Rb25 or 2jz into an rx7?
Post by: Myrddin on May 06, 2014, 08:23:17 AM
Cool I\'ll probably go down that route then, it\'s allready got an uprated radiator and intercooler but might go vmount and keep the radiator and go with a larger intercooler, think an apexi will be next on the list.
Title: Rb25 or 2jz into an rx7?
Post by: Will66 on May 06, 2014, 09:02:26 AM
Water injection might be worth considering for a drift car too.