PyR0NiAk

I myself am into the silvia's but a friend of mine has gained a lot of interest in jap tuning and wanted to know if i could find out if it was possible to put a 13b 2 rotor into an 85 RX-7 and if so... what all will he need to do?

nick812

search some 84-85's came with 13B

anderdick88

iTrader: (3)

im putting a 3rotor in my 90, and have a turbo II motor in my 85 gsl se so yes any thing is possible, as long as u have the CASH

twinkletoes

iTrader: (17)

hey welcome to the forum. This has been covered a ton of times. You can find the info you need In the faq page at the top. Check out the archives too, and get used to the search button. You will find info very quick. God bless

PyR0NiAk

alright... i figured it could be done.. .now i need one more answer on it... (we're backyard tuners) when doing the swap... such as with my s13 i gotta switch my gauges... what all will he have to switch to make it work?



ty twinkletoes

Rx-7Doctor

iTrader: (13)

You do not have to change any gauges or sending units for the gauges.

steve84GS TII

"13B" is too broad a term.

There are 8 different types of 13B,some carb'ed,some EFI,some turbo.
Each poses its own challenges when swapping into a 1st gen.The 2 most difficult jobs when putting an EFI 13B into a 1st gen is the EFI wiring and converting to EFI style high pressure fuel delivery.
If you start with a factory EFI 85-85 GSL-SE chassis,then its a bit easier.But since the GSL-SE comes with an EFI 13B from the factory,you might want to keep that engine.

To really help you,we need to know exactly what engine you want to install,and exactly what type of car you have....along with your expected HP levels and intended use.Chances are,you can search and find all the info you need,its been covered a million times.But, we cant even really tell you where to search, until we get the aforementioned info....

PyR0NiAk

he's wanting to do a 13b 2 rotor turbo... i know he wants as much hp as possible but i figure he's shooting for somewhere between 400-500hp

nick812

To much work if you have to ask you need to stop what you are doing and learn more about the different motors and how they work. Also you better be good at doing some fab work. Deep pockets help out to.

PyR0NiAk

lmao.. it's his project.. he's insistent on it.. i just said i'd find out what i could... i have a '90 240sx getting an sr20det with a goal of about 400hp with a full carbon body

nick812

Drop a sr20dett in the rx7 and he will be happy. Plus it would be more of a one of a kind. Easyer to get the power out put to.

PyR0NiAk

that'd be a shitload of work.. lol... my ONE of project is a 96 beretta turned into a rwd with a 350 under the hood

nick812

An sr20 in an RX is not to much work. From what I have read if you understand the sr motor and are good with the wiring it can be done easly. I got a shop that it would cost almost as much for an SR20 swap as a 3rd gen motor swap, or a cosom swap.

steve84GS TII

Yea........does he have the expertise and ability to build and handle such a car?

Not trying to be a dick,seriously.
This is a very small,very light car with a factory design based upon a 100HP engine.If he truely understands how much work and money it takes to produce,harness and control 400-500HP in a 1st gen,then best of luck to him,because its gonna be a wicked expensive ride.

That said,there are 300-350 crank HP turbo 13B's all over the place.In a light little 1st gen,its a very quick streetcar with plenty of race/drift/drag ability(ask me how I know)... and not so much power that you have to redesign the whole car.We see these kinds of dreams and questions all day long,and you REALLY have to step back and take everything into perspective.

If you have deep pockets,are prepared to change out the entire drivetrain and upgrade everything from the unibody to the brakes,have no smog issues to deal with,know how to take care of high HP rotaries,and are patient....then 400-500 crank HP is possible on a 13BT 2 rotor in a 1st gen....if he wants 400-500HP at the wheels,then double the headaches.....just remember one thing....at those levels,its NOT a 2JZ-GTE!!!

trochoid

iTrader: (6)

My best suggestion is for your friend to get on the forum himself and start searching/reading vociferously. 250 hp is easy with a slightly modded TII swap, 4-500 hp is an entirely different, and considerably more expensive animal. At that level, the entire car needs upgraded, not just the drivetrain and fuel system, but brakes and the entire suspension also.

Even doing most of the work himself, he's looking at spending 5-10k to have a safe, useable car. Drag his little wanna be *** over here and we'll get him pointed in the right direction. The last line in my sig line is a link to my little project. I have over 6k in it already, and have done 99% of the work myself. Most of the work has been done in preparation for a TII swap. As badly as I want 400hp in street tune, with streetable manners, I still have another 4k to go for the parts I need to accomplish that target number. An additional 6k is a more realistic dollar figure to build a long lasting, reliable engine and drivetrain.

82transam

iTrader: (18)

Yea he really needs to get on here himself and do some searching, I'm not sure what you plan to accomplish by "filtering" the information for him. In theory getting the engine in there and running isn't insanly diffucult, I'm in the process right now of swapping a more or less stock 90 T2 engine into my 83, and so far I've been able to do all the work myself in less than ideal conditions. Even still its expensive, I'm shooting for 250 hp (stock the engine is 200, so not a huge increase) and I'm already well above $3000 just for the engine swap. At the same time I'm upgrading the brakes and much of the suspension, its easily a $7000+ car when I'll be done.

PyR0NiAk

eh i had him come over last night and read everything that was posted... he seems set on doing it.... Thx everyone for their advice... { i'll stick to my s13 and let him handle his rotary :p }

Latin270

Keep us posted on your progress.

XLR8

iTrader: (52)

The most important thing in tackling a project of this magnitude is RESEARCH! What is available?, What works?, How to get there?, What to do, and What not to do? Building a 4-500hp FB requires a fair amount of knowledge, alot of work, and even more money. I am shooting for 400whp reliably and a complete chassis restore(.....well, as reliable as I can make it,) and I plan to spend no less then 15k.
I have owned 7 Rx7's (no pun), helped my friends build 2 turbo swaps, built one myself, and I am still learning every day. There is a system to do things. Planning is the key. A project like this is pretty complex and expensive so it really pays to not work backwards or have to go back and change what you thought was permanent.

Good luck and God Bless.

PyR0NiAk

it's gonna be a while... as dude said in the last post... gotta get everything planned out... my s13 is basically planned but this isn't a silvia/240sx forum so we'll leave those details alone