Boost18

Hello I am interested in buying a 93' Rx-7. After I am planning on tuning it. This will be my first project so it will be a learning experience as I go. My first question is what kind of engines does the 93' come with? Which one is ideal for tunning? I'd like my rx7 to be an everyday driver roughly with 500-600hp running a single turbo, if that helps answer my question. When it comes to tuning, where should I start? Any help is greatly appriciated. Thank you.

dgeesaman

iTrader: (7)

500-600hp and daily driver are not going to happen. 400hp is about as high any daily driven FD. With 50/50 meth/water injection and a big single turbo, maybe 500hp. Big HP numbers are not going to happen like a Supra or Vette.

For tuning always start with maintenance and reliability mods. Then you'll have to build up the fuel system as you go since detonation is death. Making big hp on these cars is not cheap.

There is much more detail in the 3rd Gen FAQ. Linked at the top of this forum.

Dave

Aaron Cake

iTrader: (1)

Realistically, you will never make 500 (nor 400) HP on an FD as you first tuning project. It's just not going to happen. Start with a far more basic project like simply making the FD reliable in the first place to get some knowledge under your belt before you blow $20K on parts and then blow the engine shortly later.

Boost18

thank you for replies, yes i know 500hp+ is a high set bar for a first project but i'm determined and money is not an issue lol. I still need to know what engine would be ideal ?

dgeesaman

iTrader: (7)

If money is not an issue pay a shop to put it in for you. An LS1 should do it.

Aaron Cake

iTrader: (1)

Money is not an issue? OK, then here's a parts list for a 500+ HP FD. These are US prices.

-full rebuild, bridgeport, all new seals, dowels, oiling mods, cooling mods, new housings: $5000
-GT42R turbo: $3000
-Custom manifold to mount GT42: $1000 - $2000, depending on fabricator
-Full exhaust: $1500
-Standalone to run it: $1500 - $2500 for an entry level system
-Fuel pump, 4 x 1600 CC injectors: $900
-Intercooler and piping: $1000 - $1500
-Radiator: $600 - $1000
-Clutch: $600
-Hoses, fittings: $2000
-Tuning: $2000- $3000

If that seems reasonable to you, then I can get into specifics.

Boost18

LS1 lol no id like to stick to the mazda engine. Thank you Aron sounds good. Ya I got 25,000 put aside just for my performance mods and 10,000 for cosmetic. I cant wait to have it all done. I'll definately post pics. I'll try it my self and if i cant then ya i'll just send it into a performance shop near by.

Aaron Cake

iTrader: (1)

If you have never tuned a car like this before, you will go through three engines to make it work. So it's probably best to send it to a shop. In that case, labour is going to add $5-$7K to that price tag. And make sure it is a rotary shop because otherwise it will be butchered.

FWIW, a 500HP RX-7 is undrivable at WOT on the street. Set up two boost settings, low and high. Low should be around 400 wheel HP (which is also terrifying) and high can be the 500HP setting. This is how I have my car set up.

Boost18

so you can switch boost setting when ever you want to? thats great. there is a track near my house i might take it there now and then. Few of my friends race so most likely I'll bring my toy too. Could you post couple pics of your car?

drift-kid

try to make a 400hp rx7 if it's going to be a daily it's still going to run high 10 low 11's

Aaron Cake

iTrader: (1)

Good boost controllers (electronic controllers with closed loop control) will allow you to set two or three boost levels, and then a "scramble" boost. Generally a low and high boost are used, then the scramble (a time based 3rd setting) is a "really high" boost.

There's a whole bunch of pictures of my engine bay in this thread:
https://www.rx7club.com/forum/showthread.php?t=775400

TJJames

aaron u r awesome to have done all that work urself, i must say ur work has helped me to not give up on my rx7 project!

TJJames

Rankins first who r u tlking to? and u got pic of it?