RX-7 From Heaven

iTrader: (4)

Guys I have a friend who bought a full race car with a second gen engine in it that's an NA motor, and I was wondering if any companies out there make any turbo kits for the NA second gen FCs. I know this is probably a dumb quesion, but I am a third gen owner and know absolutely nothing about second or first gens. I can tell you everything there is to know about a 20b or a regular third gen, but anything else other than those two i don't know about. Let me know if anybody out there makes any turbo kits for an NA second gen motor, and if it's even possible to get a turbo on the second gen NA motors (I'm sure it is but I am wanting to know if it would add substantial horsepower or are they like the RX-8 engines where barely any horsepower is added with a turbo on it because of the port designs and such). Thanks beforehand for everything guys....
-Erik

RX-7 From Heaven

iTrader: (4)

By the way: either pm me or just reply to this thread if you got the answer....

ericgrau

iTrader: (1)

2nd gen engines are like 3rd gen engines, but less heavily ported. The N/A has a higher compression than the turbo, which means you can turbo it but knock is a bigger issue than it otherwise would be. Adding a turbo to an N/A has been done, though people also swap in the entire FC turbo engine.

There are crazy (and unreliable) turbo FC's with 500-600HP or more. I don't think there's too much difference between a ported FC engine and a ported FD engine.

Try searching "turbo FC N/A" or "TII swap" or something like that.

Basically stock FC's are much cheaper and much lower performance than FDs, without all the reliability issues that FDs have (though any old car can have problems). Suspension is mult-link (modified long and trailing arm) rear, MacPherson front. It provides amazing handling for an L&T, but it's not up to the standards of an FD. A stock TII gets 200HP.

Sideways7

iTrader: (7)

There are links the the 2nd gen faqs on how to turbo an NA. In short, it is much easier and probably cheaper to swap in a turbo engine. You have to have a spacer to get the turbo past the intake, plus custom fab intake and exhaust components. You can make plenty of power with them, but there is more power potential from a TII engine. And you can add plenty of HP to an rx-8 with a turbo. I have heard there is a guy running around town with a turbo RX-8 that has well over 300 to the wheels.

melicha8

iTrader: (1)

For over 700, you sure post like a newbie. Doesn't the third gen section have an FAQ as well. I honestly don't know because I don't tread there. But we have one so check it out.

calrx7

if u worked wid fds and cosmo engines, then u are 2000% qualified to work on fc engines.

RX-7 From Heaven

iTrader: (4)

i know that the engines are pretty much similar, but i was mostly wondering if anybody made any turbo kits for the na fc. my posts are mostly from the 20b and for sale sections. i rarely go to the fd section, and i have never ever checked out the faq sections except for the 20b section faq. as for my work on fd's, i have rebuilt three 13b's to this day, and am in the process of rebuilding about five more in the next two months along with my own 20b engine. the reason i posted this thread was because one of my friends just bought a race car (it's actually an old beatle; don't ask why someone out there chose a beatle to put a 13b into, haha), and it has a 13b na motor in it, and he was asking me if he could put a turbo on it. i told him that he most likely could, but i doubt that there are any kits out there made for the na second gen. if you look closely at my first post on this thread, i stated that "i know that this is probably a dumb question", so i know that this was a newbie way of getting my answer, haha. thanks ericgrau, sideways7, and calrx7 for the help, and i wish you all good luck with your cars (cause i'm sure as hell gonna need some with mine, haha)....
-erik

ericgrau

iTrader: (1)

I believe FCs are also good candidates for 20b swaps .
Not for FD engines nor the Renesis, though.

Sideways7

iTrader: (7)

Well, you can do the FD swap, but the RE is easier and yeilds the same results. The renesis, on the other hand, would be a major PITA to do, and yield only small gains over a regular streetported s5 engine.
And yes, the FC can take a 20b without too much problem. Thats going to be my mid-life crisis project....

RX-7 From Heaven

iTrader: (4)

^^^hahaha!

so does anybody out there make any turbo kits for the na second gen to just bolt up to the engine or would we have to get a custom fab kit and everything?

dropping a 20b into an fc is way easier than dropping one into an fd from what i've heard since you only have to get new motor mounts in which certain companies make in great numbers and sell instead of having to get some custom made ones for way more expensive like i have to (even though i'm not gonna go that route, haha). i'm going to exchange the rear iron of my 20b with an fd 13b rear iron and and drop the 20b straight into the stock subframe with the regular 13b motor mounts. the only custom thing i'll have to get at that point is a custom oil pan, which will cost me WAY less than a custom subframe with custom motor mounts. also: i'm going to be using the microtech ecu since if you use that you can use the stock 20b front cover and the stock 20b omp instead of changing the front cover to one from a second gen and getting a different omp or having to premix. thanks for all the help and enthusiasm guys, haha....
-erik

My5ABaby

iTrader: (7)

No, nobody makes a kit. You would have to do everything custom. It's FAR easier to juts put a 13BT or 13BRE in it.

I believe this is covered in the FAQ.

Aaron Cake

iTrader: (1)

This thread is being closed because this topic is either covered in the FAQ or has been covered many times before. It is suggested that you make use of the search feature and read the FAQ to find your answer. If you still cannot find what you are looking for, then feel free to post your question indicating that you have already looked for an answer, and someone will probably be happy to help.

Please be aware that this forum has been around for quite a while, and almost every common question has been covered many times in the past. All this information is available by using the search function. Common questions are also already answered in the FAQ.

Some of the questions covered in the FAQ include:

-NA to Turbo conversions
-Electrical problems
-Stereo wiring
-Wheel sizes
-Stock HP and torque specs for all models
-Common abbreviations
-Common electrical problems
-much, much more

The 2nd Gen Forum also keeps an Archive of popular and informative posts. You can access this archive by using the links at the top of this forum.

Helpful links:
-FAQ: https://www.rx7club.com/forum/showthread.php?t=494667
-Search: https://www.rx7club.com/forum/search.php
-Archives: https://www.rx7club.com/forum/forumdisplay.php?f=72

Thank you,
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