L8NightDrifter

er, how much do you think it might cost to buy a 20b, rebuild it, and put it in my 93 ? thats a pretty general question and keep in mind. i nvr did anything but change my own oil, so im gonna have to pay for labor for everything and all the extra parts and accessories i might have to buy to get it in there.

i prolly dont have a chance budget wise to so this, but i have to make sure after reading about red-rx7's 630hp on under a bar. kuzz i been savin my paychecks for years and have quite a bit of money and im about to get my tired old 13b rebuilt and ported, and buy every reliability mod, and new a turbo kit and all the boltons. if somehow theres a chance i can have a 20b in my car for not too much more than ill be a real happy guy.

Black97VR4

I'd say about $25k. Probably alot more if you want the same results red rx-7 is getting.

Mahjik

iTrader: (1)

https://www.rx7club.com/20b-forum-95/where-does-all-costs-come-59544/

pugg57

if it were cheap we would all have them.

ROTORhead93

oh so true


Off topic, i've seen red-rx7's car alot and read alot about it, but i never understood what the advantage was of having two rotor housing from a 20B and the rear one from a 13B. Does it bolt to the existing subframe or something? If so, that must be a little bit less cost required for the swap to a 20B.

L8NightDrifter

i have almost 20 g's in life savings and my car is pad for so i can get a loan for like another 8 or so... is that anywhere near enuf? im really hoping for a qwick no rather than a maybe so i can give up on this fanatasy and move along with my 13b plans

Mahjik

iTrader: (1)

Spend your life's savings on your car? I think you need to re-evaluate your priorities.

Stick with the 13B for now.

L8NightDrifter

mahjik i appreciate your concern but this is something ive always wanted to do, ive been saving for about 3 years specifically for my car and already decided for sure its going to my car. the question is, how to spend it. im not the kinda guy who likes to pay in payments or buy things little by little. 3 years ago i took my life savings and bought my car in cash, now 3 years later, im prepared to spend the money again on a car

Mahjik

iTrader: (1)

Ok, if it's something you are going to do, why are you asking here if you should do it?

Are you looking for someone to talk you out it? If not, just start doing research on what needs to be purchased and go for it. I already provided a link that has all the basics needed to get started.

L8NightDrifter

ok sorry, what i meant was spending the money on my car is what ive decided to do. i didnt mean ive decided to go 20b.. and yes im looking for some1 too either talk me out and say no, you need more money. or say yes i know a place that will do it for that much or something along those lines

and thanx for that thread link, i spent much time there already and would like to know how much he ended up spending.

Mahjik

iTrader: (1)

Send a PM to "Red-Rx7". He's a local guy to me and very nice. He's usually pretty busy but he'll get back to you with any questions.

Pettit Racing does a 20B conversion and their price is near $30k. There is a forum member having his car done right now, however Pettit is located in Florida.

https://www.rx7club.com/build-threads-292/kilo-racing-3-rotor-fd-conversion-325733/

sactown_rx7

Make sure you have the money to maintain your new 20B after you've spent your life savings on it. If we're all spending $$$ a month keeping our 13B's in top shape then you might need to spend double what you do now. Keep that in mind, but good luck on your conversion.

skunks

20-40k

zmarko

I can't believe there are people out there who will drop that sort of cash on a swap like this when the 13B is plenty potent.

jimlab

The theory is that you're "spreading the horsepower out over more engine" by using a 20B, therefore it will be more reliable because it doesn't have to work as hard to produce the same power levels as a 13B. It's a good theory, but not particularly valid where the rotary is concerned.

A 454 BBC doesn't have to "work as hard" as 350 SBC to produce the same power levels, however internals can be upgraded and there are now stronger aftermarket blocks that allow you to build a 454 in a small block sized package with small block weight. There are no equivalent upgrades for the rotary engine to increase displacement or strength; they just get longer and heavier.

The combustion and coolant seals used in the 20B are still the same and have the same potential weakness that they do in the 13B. Tuning is still just as critical, especially since people seem to forget they were trying to get reliability and end up pushing the 20B proportionately as hard as they would have a 13B.

I can't count how many "1,000 horsepower 20B" posts I've seen over the years. People seem to think that they just fall off trees, and that they're as reliable as the day is long. The rotary equivalent of the 900 RWHP 2JZ-GTE, if you will. Maybe that's why they've become so popular and why people are so willing to convince themselves that the cost is justifiable.

As a "reliability upgrade", it's absolutely ridiculous. As far as "being different", there are enough 20B cars now that it's really not that different. Neither excuse is valid justification for spending that kind of money. If you want a reliability upgrade, buy a second car and put the rest of the money in the bank or into real estate. If your need to be "different" is that great, you need some serious therapy.

KaiFD3S

iTrader: (37)

The way I see it, there is no point in having that much horsepower if you will be driving it on the street, you wont be able to use it and if you do one of two thing may happed, you wrap your car around a pole or you will get pulled over constantly...so basically that is too much HP for a street driven car...

Now if you plan to drag the car then thats a different story...

To me 400 HP is more than enough for a street driven car, heck even 350 HP is enough..at that range you will beat most of the cars on the road..

If I were you, I would just build the motor with an upgraded single to about 400-450 since it looks like you want a lot of HP and spend the rest of the money on suspension...