looking for advice on durability and dependability on single or twin turbo systems. going with forced induction and need advice. thanks for any advice. lee

 

What kind of power are you wanting to make?

 

twin is always nice but single i crazy awesome

 

single if you dont have any atm

 

More information is needed. For example, the Mazda twin turbo system as used on the FD has some serious issues. But a custom twin system is a completely different story.

What vehicle? What are your power goals? What is the use for the car? Budget?

More info!

 

Twin t51r will do the trick

 

Definatly need more info, also what you need to consider is what the purpose of the car will be, if you have a race set-up then a single turbo will have a better spool in the top end giving more power at higher rpm with more accessible power when racing, but a bitch to drive as a DD. But on the other hand you can set up a twin turbo system to give constant boost throughout the power range, giving more risponsive trq for DD, but will most likely lag a bit on the higher end of the rpm. Obviously there are more factors to keep in mind and there are more possible outcomes, but it gives you a starting point.
Marco

 

Also, if it's a custom setup, there are plenty of aftermarket single turbo manifolds you can buy; a custom twin setup will be a lot of custom work (actuators, exhaust flaps, etc if you want sequential twin) and then tuning out the transition will be an added complexity. Of course it can be done but turbocharger technology has come a long way since the FD was introduced.

My 2c only!

 

go single ftmfw

 

thank you for the replies. let me get this question out of the way. am i invited here without owning a rx7 yet? heres my rundown. i am planning on buying an fd in the very near future. the tuning world is something i am very familiar with. i am getting away from the honda/acura scene. the b16s and 18s were fun but so freakin tired of fwd. always seen some pretty sick 7s and 8s at nopi, hot import nights and tuner car shows and have decided to go with the 7. the lines are much more intense than the 8s and there seems to be a much larger aftermarket scene for them. first requirements are street-ability and dependability. leaning towards the the single turbo setup because of the advice given so far. btw thanks again. my budget goal is somewhere around 20k-ish. trying to go about the most practical, logical and dependable way to go about this. been looking all over the u.s. for clean rx7s in great condition. been narrowing down a few. without a doubt, body kit, rays wheels, coil-overs, carbon fiber hood, wing, racing seats etc. i know it sounds like i would be going way over budget. i am keeping in mind that all these mods might not happen right of the bat. i have been educating myself on porting, turbos and intercoolers. hoping to find some awesome deals in the classifieds. with that being said i am very appreciative of the website. awesome features and replies so far. help me out here guys, how do i get on the right track and go about the venture? thanks, lee........rangers lead the way..........

 

No, go away ricer noob! Just kidding. Several members on this forum do not own an RX-7, and I think there are quite a few who do not own a running RX-7, lol. This is a club of interest, not of ownership.

I suggest that you keep an eye on the classified section of this forum. You can pick up a car with many or all of the mods that you want for a fraction of the cost of building it yourself. In the meantime you can read the 3rd Gen forum to gain more knowledge.

 

Agree!!!

 

I'm going big single.. twins sequential is a pain IMO. But then I don't DD my 7

 

Meh, run the stock twins in parallel and call it a day.

No, I would say do some more reading and talk to people who prefer their setup to find the pro's and con's of each. When I had my CYM, I loved the stock sequential set-up for DD. I drove my buddies single (T78...HUGE!) and it was nice, but didn't like waiting for 5K to hit full boost (but when it hit, it was a blast! 22 psi, yo!). My cons for twin would be the heat build-up and no good stand-alones that support sequential (although there may be now, but at the time none were available). So read up!

Jose

 

Keep in mind though that there are levels between working stock twins and a T78. Also the T78 is a 30 year old turbo design, and always will be a lag machine.

Now ditching the stock twins for a GT35R...yes, there will be some sacrifice in response but the 400 RWHP and power from 3000 RPM up makes up for it.

Of course, it depends on the use for the car. Honestly for daily driving, removal of the stock twins is likely the best way to go as you'll be removing the single biggest headache point of the car.