dosracin

k so I dunno much bout rotaries eccept that they make hella power easily, Im on the process of builing my 13b-t but dunno **** bout it, all I know is that I wanna boost around 20-25 lbs. on pump gas, so wat all does the engine need or wat do I need to do period in order to boost that, n for it to be pretty reliable? n also wat HP am I looking at?

fluffysheap

yeah... that's not going to work so well. Better than just deciding how much boost you want you should first:
1) Read as much as you can in the forum, then
2) Decide how much HP you need and build for that. The biggest thing is getting a big enough turbo and intercooler and plenty of fuel. You cannot just make up for bad tuning with forged parts like you can with a piston engine. You need a big turbo and intercooler so your air is cool and happy when it goes in the engine.

Finally remember this: "Q: What do a 1000 HP Supra and a 500 HP RX-7 have in common? A: Same quarter mile time"

capt murph

You're lookin at 13 million horsepower + -

diabolical1

iTrader: (3)

welcome to the board.

let me just be blunt. i mean no disrespect, first of all, these two statements do not belong in the same post. it's a recipe for disaster, physcial, financial or both.

sure, you do see some larger gains when comparing some mods to piston engines, but the fact is rotaries are slaves to the same physical and chemical laws of the real world. there's no getting around that and you must think of power increase in those terms, and very few others.

what you should probably do is spend a lot of time reading and correcting that first statement you made before trying to push 25 pounds of boost through anything.

Jumbogumbp

In short the engine will need lots of money, lots of rebuilds and lots of meth injection. Hp isn't derived from how much pressure you're putting in.... there are TONS of other factors.... look at a few different turbo's.... turbo A at 16 psi may hit 350hp at the wheels while turbo B might make 450hp... turbo A might make 350hp at 3k rpm's and b might make the same 350hp at 5k rpms.... you need to research more than just rotories....you need to understand forced induction too.

dosracin

k so maybe I need to be a bit more specific...I know about turboing a car n wat different turbos can do, n off course i know that tuning is just as important if not more than the build up, im not that clueless ...what I wanted to know is engine wise right(cause againg Im not too familiar with rotaries n this is the forum), wat mods more or less (specify pls, dont just say big turbo) am I looking at doing if im planning for some thing like i said earlier?


oh n at 13 million horses am I going to be able to go 100mhps?

trochoid

iTrader: (6)

My suggestion, find someone local who knows how to build and tune turbo rotarys. From what you have posted so far, you are off to a very bad and expensive start. Did the F&F bug bite you? Gonzz is local in the Vegas area, you might PM him and ask for help. I have a feeling he will hate me for this suggestion though, lol.

Also, please use complete words and sentences, it makes reading posts much easier and more comprehensible.

Welcome to the forum. In my sig line are links to some of the things you should start reading.

Jumbogumbp

alright....here's a quick run down......well turbo wise you need something in that effiecency zone.... depending on whats more important to you (spool vs top end) 20~25 psi could be any where from 400 to 700 hp depending on the volume of air your turbo can push. You'll most likely need a street port but I think you can flow enough on stock ports for 22 ish psi... just spool time will blow... so you're looking at anything bigger than a gt35.... you'll have to look at compressor maps to figure out what you want, I'm not gonna do that part for you.
You'll also need to redo everything about your fuel system...from pump to injectors.... and to run on pump gas you'll HAVE to run an alternate injection... water/meth probably.
Next you'll need a better radiator and intercooler and all the piping and stuff like wastegate(s), bov, pop off valve.
Next up... standalone... I suggest haltech but it's up to your preference and who'll be tuning.
Then comes secondary safegaurds. You're going to want but not need, secondary injection monitors and a way to dump a ton of fuel and retard your spark incase something happens to your secondary injection durring wot.... at that pressure one knock and your engine is toast.
lets see... you'll need a good exhaust manifold and 3" minimum exhaust.
The list goes on with small stuff that I don't have time to write about.... but there's ALOT to get for that kinda pressure.

Jumbogumbp

and on another note.... noone figures on their setup using pressure.... you usually find something to achieve so you can get the best performance for your application.
remember 400hp at 20 psi at 6k rpms is way different than 400hp at 14psi at 3500 rpms.

dosracin

k so how about 380-400 hp's?

Jumbogumbp

hmmm theres quite a few turbos that will get you there on pump (93) under 18 psi I believe a t04r will do it, a gt35r or bigger will also do it, not completely sure, I know it'll do it on a 13brew shuold also do it on a 13b-t (I'm assuming you're building an FC). You'll need a fuel pump, bigger injectors, standalone (haltech), intake, fmi, exhaust manifold (don't get a ssautocrome, heard they warp and crack), full exhaust (3"), wastegate, bov. Thats the jist of it, other little things like oil lines etc. Might wanna consider cooling upgrades too, like radiator and oil coolers, cause rotorys run hot.

Jumbogumbp

also theres a guy on here with a rx-3 with a BWs475 turbo that made 339 HP @ 12 PSI-445 HP @ 22 PSI on stock ports. so it really depends on the turbo you chose and what kind of power band you want.

dosracin

yeah I was gonna ask wat type of port (if any) would I need, and also; are 2mm seals ok for that or should I go up to 3? Injector wise, 750cc primaries and 1000cc secondaries or no?

p.s also how is a t-60-61 or t-70 for that?

Michigan_1jz

???

Are you even familiar with Supras? If you were, then you'd know that a 800hp Supra made it into the 6's last year. I don't see any rotary powered rx-7's hitting anywhere near that time.