What's up guys, want to start my rx8 TT build. Never done a build before or done all that much work on rotarys, but Im always down to learn something new.
anyways, I want to build off the 13b renesis, although I love the 13b rew, sadly I can't find one anywhere near me for a reasonable price. But, is a twin turbo build possible on the renesis? I've been doing alot of research on it and know I will need low compression rotors, etc, but I haven't gotten a solid answer yet. I guess anything's possible but I don't want to waste my time if the hole thing will just be a headache


Also, curious to know if I can buy a blueprinted build online somewhere, or do I gotta get custom one or whatever? ( Don't laugh, never done this **** before lol) pretty new to the car scene

 

Search the forum for the builds people have done already, you'll find more information than you can possibly imagine.

 

1st read the new owners thread about 12 time no really read this!
2nd stop what ever you are thinking about when it comes to engine swaps or induction change and add about $20k to what ever money you think you have for it
3rd the renny doesn't like boost because of the exhaust ports( if this doesn't make any sense read the new owners thread)
4th check out the threads on here about force induction and engine swaps.
5th have i mentioned reading the new owners thread yet?

 

You can do single turbo, so you can do sequential twin turbo, but that's pretty complicated for little gain over single turbo. And changing the compression is a function of how much boost you want to run. Like suggested above, check what other people have run on stock Renesises. Hint: rotors aren't the problem, exhaust port design is.

 

Wait.... What do I need to read??

Haha thanks man, I'll check it out

 

Thanks man, and ya I want to get the low compression rotors so I can run as much boost as I can at a safe-ish level, meaning without blowing up or constantly breaking ****. I'm rebuilding the entire engine, new apex seals fuel lines rotors, money isn't the proboem, it's me not really knowing all that much lol. I just want to know if it's possible to TT but it's looking like it will just be a pain. I want to keep rotary not do a generic 2jz or ls swap

 

Did you read the hint?

You may want to consider swapping in a 13b-rew on there first.

 

rew would probably be cheaper than a tt renny with much more power and the engine will most likely last longer. i would single snail swap an rew before attempting twins on the msp

 

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I've been trying to find and rew for a while, can't seem to find one anywhere, but I think that's what I'm going to do.

 

I read hint, I know the exaust port design is a problem too but like you said the rx8s rotors have high compression versus the rew rotors that are low compression to run more boost, that's why I was going to buy new rotors as well as everything else I needed to get turbos to run smooth. At this point I might just buy a 13b rew and build off of it, I just can't seem to find one

 

https://www.recyclers.net/search.php

 

Sequential TT isn't really all that practical.

An FD guy I talked to told me that he swapped his factory sequential setup for a single turbo w/twin scrolls. The sequential setup was impressive at the time(the 90s), but modern single turbos are good enough to make it obsolete.

That's not to mention that he showed me the vacuum line diagram of the FD. The moment I saw it, I completely noped out... Doesn't help that those rubber hoses are all crispy plastics after 20+ years. Crack any one of them and you lose your boost. May whatever deity you worship to have mercy on you when you need to track it down...

Turbo Renny can be done, but it's probably a good idea to leave it with someone who knows what they are doing, and don't cut corners.

 

The thing is even if you have comp rotors that could support enough boost for 500hp, the exhaust port limit is below that. You can certainly build it, but beyond about 350-ish hp you're pumping heat and little else.

AFAIK single-turbo REW is by far the more practical solution, and it has been done many many times (in RX7s). Only a few cars on this forum like that.

 

Right now I'm leaning towards the FD, if I do stick with Renny, your right I will have it done by someone. I can replace hoses with higher grade ones if necessary after time. Thanks for help!

 

Alright thanks man! I'll probably just do the single turbo if it is better and less of a headache. Seen one rx7 tri-turboed lol it is nasty.