Hello everyone let me give you a little background on my situation about 7 years ago my brother in law bought a 94 rx7 pretty much stock had a few minor things done. To it well being in my teens at the time I was instantly in love with the car and helped him work on it when ever I could long story short he went from stock twins to a "gt45r" eBay turbo lol had it ported to a street port added a new fuel pump not sure on size and 800cc primary and 1300cc secondary injectors so he says I have no way to prove or disprove this had it tuned and said it mad around 435hp anyway he grew tired of the car and now you guessed it it's mine SOOOO........ I'm looking to take this car in a new direction I want to get a better quality turbo a sap but for what I am wanting to achieve from the car I want a turbo that will work well with the setup on the car but have enough *** to let me reach my power goals of around 650 in the year to come any ideas or input would be great I have lots of other questions as well but let's start here thanks guys

 

I would contact turblown performance. They will be able to steer you in the right direction on what to do to attain your goals

 

Ok I'll look into that thank you do you know where they are based out of?

 

Give Shawn or Elliot a call at Turbosource/Turblown (763.753.9939) so you know given your injectors size you're limited to around 500 hp or less, 650 hp is going to take quite a bit of big engine modifications, some would recommend taking the car to a reputable shop near you figure out what condition your motors in as well as your current set up, a good tune and some tweaking could earn you some more horsepower if you're able to add some more fuel

 

Ok thanks and you have a very good point about taking it to a shop I plan on doing so also dose anyone know if or how I would be able too determine what size injectors on in the car for sure if I pull them will they be labeled I know on my buddy's mustang they are colored just so I can be 100% on it before I take it to a shop and tell them what I have been told and it be wrong you know thanks guys

 

ID(Injector dynamics) labels their injectors they are very common, Bosch EV14s are common as well but I'm not sure if a label their injectors you can send your injectors off to be flow tested, IIRC RC Engineering charges around $40- $60 an injector this will give you accurate injector size

 

Thank rikk I will be more than likely doing that just so I can get a n accurate size on them very helpful I will be keeping everyone updated on everything as I get it done I have more questions just want to follow up on the answers as I get them so I don't have to much on my plate lol

 

A good route for that power would be aeromotive fuel pump. 1000cc primaries 2000cc secondary injectors from ID (if running a Power FC speak to your tuner about having 1000cc primaries as can be a bit tricky to map on the power FC. Aeromotive FPR. I'd get an xcessive lim and run your injectors on one rail. Def a turblown manifold with twin turbo smart waste gates. Ditch the eBay turbo and in my humble opinion borgwarner efr series turbos run great on rotaries. Of course v mount intercooler and koyo n flo rad. Then with that need a decent clutch, the os giken twin plate is nice but there's other choices out there.

I thought I'd take a different approach and give you specifics instead of bigger injectors upgrade fuel pump etc..... Check out the parts, they are high quality. Of course your engine will need attention, porting, rebuild, and seals....I like the Atkins rotary one piece corner seals and they strong apex seals, never had issues with them breaking and Damaging my engine.

Of course we all have a budget and this setup is quite expensive but it's a fantastic setup.

 

Oh BBF that sir is exactly what I was hoping for I want to hear from people and what they have used or had experience with I greatly appreciate any advice on where I can go or who I can send what to and I can very easily take it to a shop and throw gobs of money at it and say fix it or build me this but what I'm looking for is to be able to have everything in line have all my parts hand picked before I start the build witch is why I am asking the questions I am now I want people's advice and input from the rx7 followers and people that live these cars I have roughly 30k set aside for this build so I don't want to half *** it or just have joe blow build it the way he wants it I am looking to have my mind set on every part of it so thank you very much for the info anything else is gratley appreciated

 

Happy to quote you on your setup! American's are saving huge cash buying in Canada because of the exchange rate.

Shoot me an email, john@gleasemanufacturing.com

 

Hey so just a real quick update I went ahead and just got new ID injectors 1000cc primary 2000cc secondary's just to eliminate any guess work or sending them out for flow testing also I believe I may have found the turbo I am going to go with the Borg Warner s467 has anyone used this turbo before and what kinda of spool up did you have any and all info is welcomed thanks again

 

Just curious why you want a 650HP RX-7? It seems like a very specific number.

These cars runs 10s at the 400HP level with good tires.

 

Well to be honest with you like in my original post I know the previous owner and it was around 400 + hp it was fast but not near as scare myself fast like my buddy's ISF and so the 650 number is to stay ahead of my friend lol what are your concerns about that much power

 

I believe the ISF runs a 12.8 to a 12.6 out of the box.

Stock twins are faster than this FYI.

 

I hope this thread remains "technical" as I would hate to shut it down for trying to buy or sell parts by any member.
650HP?..holy crap..that'd kick ya in the pants!
my 360 hp FC was nutz!

 

Yes that might be true but I never said his car was stock (witch FYI it's not ) he has put down 537hp and 412flbs also I'm not interested in just a straight line fast car these cars were ment to be driven at least in my opinion and why everyone is so worried about the number I'm shooting for not sure as I'm sure most people on here have a fair amount of common sense I would not holding a tune of 650 I just would like the ability to make that much power I'm sure most of you don't shake your heads or raise your noses at people who put down huge numbers in a gtr or a supra ext ext again thanks for the input

 

Don't take offense, some that have posted in this thread are extremely knowledgeable and even considered gurus in the rotary world, making over 500 hp in a 13B can be an expensive and timely endeavor and not merely a simple task even if you align all the proper parts something can possibly go wrong, to make 650 hp reliably you may be better off going with the 20B and slap a turbo on it(not cheap or abundant), again much easier said than done but once you have a 20B and a turbo system built you're still looking at the upgrading the engine management system, building a reliable and capable fuel system, making sure you're cooling system is up to task, making sure your drivetrain is strong enough to support 650hp. My point is the supporting mods will cost you as much or more than the 20B turbocharged, probably $20k+ so be prepared. With that said every car is different, 600 hp in some cars may feel refined as others with 400 hp may feel scary fast, but that same car with 600 may not be as fast as the other with 400hp, too many variables to consider gearing,tires, suspension... I wish you the best of luck in spanking your friends Toyota!

 

This above post is the only thing I take offense to I don't see why my goal is in any way a problem with this site and why misterstyx69 would say they would have to shut it down! I was under the impression that this forum was to help people with issues and to share information and showcase our cars I understand a lot of people on here are very knowledgeable and all input is gratley appreciated and yes I have looked in to the 20b swap and your right it does seem to be the "easier" way so to speak but to be honest I want to be different from everyone else not if but when I am completely done with this car it will stand out from the pack no matter how many rx7 you put it next to and I'm not saying it will be better but it will be different and yes trust me I have done tones of research on reaching my goals and I continue to do so every day I spend countless hours digging through old and new threads and reading product information and capability I know the road I am heading down will have a lot of ups and downs in it and will cost a good bit but I have a very good job I am blessed to have the funds to do this project so like I said before yes 650 is a crazy number I don't want to have it as an everyday 650 the car will most likely be a close to 500 every day but the ability to make that kinda power is what I want so again thank you everyone for the info and interest

 

An eBay "GT45" turbo (and I have seen these in the real world, someone brought one into my shop and I thought it was very amusing...It's about GT60 sized, but nothing line in terms of wheels and trims, more like a good display piece or something to make a turbine engine with when bored) is not really a good point of judgement. Those things are enormous, poorly made, and on a 13B when tuned terribly have a 1000 RPM powerband.

Building 650HP on a 13B reliably is not a trivial matter. It absolutely can be done reliably, but the learning curve is steep. Remember, this is an 80 cubic inch engine regardless of geometry and we are asking them to make 3 times the factory output! Starting with a first project and launching directly to a 650HP power goal is going to launch something else...money and apex seals out the tailpipe.

Why not start with a more modest power level. Sounds like this car is a basket case anyway so it's going to take a lot to get it back up and running.

Start with a basic turbo kit around the 350HP level. Use a quality standalone, upgrade the cooling system, upgrade the fuel system, tear out all the junk that is there. Then you will have a reliable and fun vehicle that you won't have to worry about. You'll also find the response from a quality turbo and good tune to be a broad powerband, so your 350HP is going to be way faster and easier to control than the previous eBay turbo "450HP".

Then once you have some experience, you will already have the systems in place so that you can upgrade the turbo, swap in some larger injectors, and tune for higher numbers.

Of course it's right around the 400HP mark that the rest of the drivetrain enters into the picture. Transmission can handle it, but clutches for that power level are either terrible to drive, slip, or expensive.

Above 400HP traction is the next challenge. Fitting 255 or wider tires out back requires some work.

 

Well thank you sir I have actually been tossing this around myself I know that 650 is a big number I know it can be done but I also know I will not be able to drive and enjoy the car for a good bit of time if I do jump straight for the big number I was considering aiming for a little lower number around 400 or so. Also the eBay turbo yeah first thing to be replaced I couldn't believe it when he put that on the like I said last week I now have new injectors on the way ID 1000cc and 2000cc I was told by po that the fuel pump was upgraded but I don't know for sure so I will be getting one so I will have the ability to feed the motor more fuel in time. My goal for this car is to use high quality parts because in the world or cars you have FAST , RELIABLE, AND CHEEP and you can only have 2 hahaha so I don't want any low grade parts on the car so I thank you for your information and support it means a great deal to me I will be starting my bold thread soon so keep your eyes pealed

 

I am Kindly stating that I would only lock the thread if you ask for PARTS..OR if someone Posts and say they have parts FOR SALE.
It is only Fair..it's a given rule.
Obviously a PM from another member will go unposted about parts BUT if the inquiries start showing up in the Technical section as Replies to the OP Wanting to Buy then the Thread will get shut down.
There are 20 Classified Sections and ONE New TECH Section.
This NEW Tech section is dedicated to New Members asking questions about Car problems and not where you can obtain "go Fast bits".That is easily found in the 20 Dedicated Classifieds sections.
Since the Classifieds out number the Technical sections then why make "another buy and sell section".

I don't think your goals are unrealistic.I'd aim for the sky If my wallet would support my dreams..lol!
I wish you the best in your build.

And by the way,My advice is to cruise the Build section itself.
Many guys have already been where you are starting from so BIG tips can be grabbed and used as a corner stone to your new foundation.
My car was a wrecked N/A FC..I got the info off this site,built it, and it saw a DYNO...as a Modified TII swap.
So anything is possible.
Good luck man.

 

1000CC primary injectors are unnecessarily large for a 400HP goal and will just be difficult to tune depending on the standalone. Injectors are an easy swap. You can always increase injector size later when you decide to increase power. Stick with stock primaries for now.

Interestingly, and this might really bake your noodle, I have been downsizing primaries in the past few builds. Going down to 460CC RX-8 injectors. Which isn't an option for the FD due to the side feed unless you want to swap rails. Reason? Far more injector resolution available at idle and low loads, so a far better tune is achieved.

Did some experimentation way back in the day when we still had only crappy pintle style low impedance injectors running 180CC primaries. Gloriously smooth, but required such large secondaries that the transition was too much of a gap.