How to get 300hp?
11-29-10, 08:52 PM
#1
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How to get 300hp?
Hey guys , ive done alot of searching and im comin up with nothin , im new to rotarys. jus got my rx7 about a week ago...
my car has 75k , motor was rebuilt 3k ago ... im lookin to hit the 270 - 300ish hp range (wanna keep it as a daily) what would the best mods to achieve this ?
ive been told some big injectors and a good dyno tune would put me in the high 200's ... 270+.. can some1 help me get this figured out please
its a 1987 FC TII , completly stock fresh rebuild , tranny is coming out next week to be rebuilt
my car has 75k , motor was rebuilt 3k ago ... im lookin to hit the 270 - 300ish hp range (wanna keep it as a daily) what would the best mods to achieve this ?
ive been told some big injectors and a good dyno tune would put me in the high 200's ... 270+.. can some1 help me get this figured out please
its a 1987 FC TII , completly stock fresh rebuild , tranny is coming out next week to be rebuilt
Last edited by slideways7; 11-29-10 at 08:55 PM. Reason: more info.
11-29-10, 11:10 PM
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wow thats exactly what i was looking for thank you very much , i was looking at the rtek ecu's ... can u put the 2.1 on a stock motor ? or should i just do all the upgrades at the same time ??and as for the turbo , stage 1 or 2 ?? im looking for quality and reliability , im willing to pay to achieve that
Last edited by slideways7; 11-29-10 at 11:14 PM.
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11-29-10, 11:23 PM
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You CAN put a 2.1 on a stock motor, just realize that the 2.1 lets the user make their own fuel map.
For a V8 swap, people just use the turbo rear end with a custom driveshaft.
For a V8 swap, people just use the turbo rear end with a custom driveshaft.
11-29-10, 11:27 PM
#12
me? i have 1.3liters of raw fury still but i answer that way when i get upset that people on this forum don't do research and miss reading my sig. 
anyways, find a tuner in your area who works on RX7s who will be tuning the car and follow their advice first before going out and just buying any ECU suggested to you. you may find that no one around you will touch an Rtek, or will charge you grossly more because they are a novice standalone and require HOURS of painstaking adjustments one live cell at a time.. so what did you save by buying an rtek if you aren't going to tune it yourself? nothing, because unecessary tuning/dyno time could have bought you a REAL standalone. Rtek is for the DIYer.
anyways, find a tuner in your area who works on RX7s who will be tuning the car and follow their advice first before going out and just buying any ECU suggested to you. you may find that no one around you will touch an Rtek, or will charge you grossly more because they are a novice standalone and require HOURS of painstaking adjustments one live cell at a time.. so what did you save by buying an rtek if you aren't going to tune it yourself? nothing, because unecessary tuning/dyno time could have bought you a REAL standalone. Rtek is for the DIYer.
11-29-10, 11:31 PM
#16
Yes the rtek 2.1 runs the car completely stock. Then you can upgrade other things as you want.
My suggestion.
1. Rtek
2. Racing beat turbo back
3. bigger injectors. You can run 720X4 with the Rtek and you can tune for larger ones if you need to. (Check ou t Rtek sectoin of forum)
4. Inter cooler
5. BNR stage 4
The BNR will pull down your Boost to 6-8psi from the 10psi that you would get with the Boost creep of the exhaust. I don't know if you will need a controller to acheive that but this will make one sweet 7.
Check the Rtek section you can get alot more info there.
My suggestion.
1. Rtek
2. Racing beat turbo back
3. bigger injectors. You can run 720X4 with the Rtek and you can tune for larger ones if you need to. (Check ou t Rtek sectoin of forum)
4. Inter cooler
5. BNR stage 4
The BNR will pull down your Boost to 6-8psi from the 10psi that you would get with the Boost creep of the exhaust. I don't know if you will need a controller to acheive that but this will make one sweet 7.
Check the Rtek section you can get alot more info there.
11-29-10, 11:35 PM
#18
screw the BNR, look at the "build your own hybrid turbo" thread on the front page..
then you need a standalone, refer to my previous modified post.
then you need fuel system upgrades: walbro or supra pump, 720/720 or larger injector combination
free flowing intake and exhaust
a professional tuner or enough excess to cover a rebuild or 2.
then you need a standalone, refer to my previous modified post.
then you need fuel system upgrades: walbro or supra pump, 720/720 or larger injector combination
free flowing intake and exhaust
a professional tuner or enough excess to cover a rebuild or 2.
11-29-10, 11:41 PM
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ok thank you karack , sorry for being so nooby but this is my 1st rx7 and i bought one hell of a beautiful car now i want it to be as quick as hell , i got the fund just lookin for some guidence on whats best for these motors
11-30-10, 02:00 PM
#20
lite rotary = easy push
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300 with minimal work/cheap/reliable = rteck 2.1, BNR stage 2 (but the stage 3 costs the same as 2 so you might as well get the 3) 550/720 or 720/720 injectors, exhaust, walbro fuel pump, your going to need a boost controller, BOV, and to put it over the edge but not needed a front mount or v-mount intercooler to keep the temps down...... the thing you really need to know is it all depends on a good tune there was someone on here making 300hp with the rteck 2.1 and a stage 1 bnr and there are plenty of ppl on here running a similar setup that share fuel and timing maps you can use and modify to get a good starting point
for reliability I would recommend removing all the emissions stuff and the omp and start premixing
for reliability I would recommend removing all the emissions stuff and the omp and start premixing
11-30-10, 02:16 PM
#21
You could simply tie 100 horses to the front of it, and wallah 300hp.
In all seriousness what sort of budget are you looking at investing?
Reliability mods you might consider:
Water/Meth injection
Koyo (or equal) radiator
OMP delete and Premix
The Rtek and BNR are the "cheap" way to get to 300hp. If you have deep pockets you might want to step up to a Stand Alone (PFC, Haltech, etc) and a Garrett (or similar turbo).
A megasquirt might be the way to go if you are handy at soldering, and it's an affordable option similar to the Rtek, but it's a stand alone.
In all seriousness what sort of budget are you looking at investing?
Reliability mods you might consider:
Water/Meth injection
Koyo (or equal) radiator
OMP delete and Premix
The Rtek and BNR are the "cheap" way to get to 300hp. If you have deep pockets you might want to step up to a Stand Alone (PFC, Haltech, etc) and a Garrett (or similar turbo).
A megasquirt might be the way to go if you are handy at soldering, and it's an affordable option similar to the Rtek, but it's a stand alone.
11-30-10, 05:12 PM
#25
Think of a rotary engine like a 2 cycle engine. The OMP (oil metering pump) injects oil into the engine at the injectors to keep it lubricated.
You can mix 2 cycle oil with your gas like a weedeater or chainsaw (not 50:1), but 1oz/gal and add the oil to your gas tank first so it will mix with the gas correctly.
You can mix 2 cycle oil with your gas like a weedeater or chainsaw (not 50:1), but 1oz/gal and add the oil to your gas tank first so it will mix with the gas correctly.