Hey Guys,

New to this site and I have tried doing some research. I am new to 7's, but have just recently come up on some money and am looking to get my first one. Things i understand are the engine needs to be rebuilt every 50K miles, what options came on what, etc....

My question.

You guys owning 7's, what do you prefer, single or twin turbo's ??? What setup has the best potential ? I am a honda-certified tech but i highly doubt that will help me here. I understand how a rotary works, just nothing past that.

I am looking for a streetable 400 - 450 whp rx7. Single or Twin ?

Thanks Guys,
Looking to buy within the next few days.

 

Average engine life is around 80K. Most would like to have a single turbo if possible. Expect to pay around $16-23K depending on condition for what you want. Good luck with not getting this thread locked!

 

Locked ? For what ?

Anyways, what are the advatages with a single over a twin ?

 

I think that twin-turbos eliminate turbo-lag, and a single turbo allows more room for a larger turbo. I may be wrong, or there may be other advantages.

 

Usually with questions like this, responses include "search", "read the faqs", etc... then an admin will lock it.

anyway, the twin setup has a complex, aka PIA vac line system. do some searches and you'll find more than a fair share of boost problems, etc...

By going single, you eliminate 95% of vac lines.

The stock twins are limited in the power they can produce. You're left with the option of going with aftermarket upgraded twins, or aftermarket single. I would say 75-80% of people chuck the twins and go with a single.

Given your admitted lack of knowledge on the car, I would look for a car which has a relatively newly rebuilt engine (say 5-20K miles), single turbo, the PFC computer, and has been tuned for it's setup.

That way, you reduce the amount of money wasted fixing things, making mistakes, learning curve, etc... and you get get down to the business of driving the car.

Keep things conservative, the car will last a long time. Push it to say you have huge HP numbers, it's a matter of time before you are replacing an engine.

good luck.

 

and regarding the tubro lag - personally, i think it's more talk than anything. In the end, it's like reading a magazine and one car is 0-60 in 5.2 and one is 4.9. On paper, it means something - when you're driving , it's another story.

I've riden in, and driven both. The difference is just not that big - in my opinion.

 

thanks for the responses guys.

i when it comes to turbo's, vac lines, etc....i know lots about (have to be close to the same as honda's/acura's.) the only thing i was unsure about what the single vs. twin when it came to the rotary. I have a buddy that works at Subaru/Mazda here in Los Angeles who can do all the work.

Like you said,

I will be getting an rx-7 with a recently rebuilt/built engine with less then 20K miles. Thanks Guys,

Appreciate your help

 

As stated by silver93 the twin have limitations as how much hp they can make efficiently. If your looking for 450whp your going to need a single, and it is going to have noticeable lag compared to the twins. But in the end it will probably be worth it. Whoever told you that you will have to rebuild the engine every 50k is a retard. Build it right, tune it right and drive it right and you'll be good.

 

To buld the FD "3rd gen rx7" youre going to need about an extra 10k just to get started without the cost the rx7. Like TwinTriangles said do it right the 1st time and you wont have problems. Start off with suspension and work your way up. You're going to need alot of new things to make 450hp for everyday since you'll be driving around at about 15-18psi tuned. I typed out a nice sized post but then the PC frooze so i'm not going to do it all again..lol If you want someone to talk to about your project you can IMME on aim at screen name ' noc jayy '. I've been there done that from stock twin turbos to a nice sized single turbo and i'm still not done with my project..

Aim sn: noc jayy