i have a 90 gxl n/a i was wondering what would i need to do to install a turbo unit with a modified manifold to support 4 port exhaust. other than new injectors? and do i need to worry about the compression

 

Search, might also be covered in the FAQ.

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/frequently-asked-questions-2nd-generation-rx-7-faq-fc-494667/

 

Not worth the effort. Better off getting a TII. Search around the section for more detailed explanations.

 

Not worth the trouble it is a lot easier getting a T2. Not to mention it will seriously kill your engine life since the N/A motor is not designed for a Turbo. For the amount of trouble you go threw and the money it would take you could have goten a T2.

 

Let him make his own conclusion. Their are others who travel this road.

 

I was just stating my opinion. I wasn't telling him not to do it but to beware what turbo charging a N/A will do to his engine life.

 

It can be and has been done before, Aaron Cake is a great example of it being done. Although like most have said when you start figuring out the cost to swap to a TII setup or turbo your N/A you will MOST LIKELY been better off buying a factory TII. However; building your current car could be a great learning opportunity for you and you will know more than you ever thought possible. Just dont plan to do such things of this is your only car.

In either case you should download the online FSM and start reading it.

Aaron Cake's site for reference http://www.aaroncake.net/RX-7/

 

what do you mean to support a 4 port exhaust? and yes, if you do this you do need to worry about compression unless you put the 9.0:1 TII S5 rotors in, which wont be a fun task. and if you are turbo'ing and you want to put bigger injectors in with the turbo, you'll need to run the turbo ece witha a standalone engine management system

 

Im In The Process Now Of Boosting Mys4 Na . Yes The High Compression Is Something To Worry Bout Since The S5 Na Came With The Highest Ratio On A 2nd Gen , But Not To Much As Long As The Tuning Is Right . Yes You Will Need Bigger Injectors But You Wont Need To Get A Standalone Inless You Want 2 Go That Route. Im Going With A Rtek 1.7 And Safc Combo 550cc & 720cc. Theres Also A View Ways To Go About The Swap As Far As Maniolds Go. I Learned Alot From Aarons Site Along With A Few Other Threads On Another Forum.

 

Swapping in a T2 motor, or buying a T2 car would be in your best interests.

 

Most of this thread is ridiculous. Not to mention all questions are already answered in the FAQ.

The simple and short answer, is that if you have to ask, then it is an easy "No!". Based on your question I can tell that the conversion is a bit beyond your experience/knowledge.

Read the links provided in the FAQ and you will get an idea of what is required.