Any of you guys have any information on the 3rotor 20BTT engine? Costs, specs, where to find one? Is swaping the 3 rotor on a 3rd gen pretty hard? Any help would be appreciated.

 

pettit.com ......... 40,000$$$$ 550hp est. over 240mph

 

$40K? Wow... have never head that. And btw... where is the 20B only forum? I heard that's where all questions posts go and I wanna find it to see if this is something I wanna do.

Thx.

 

$3000 20B
$2000 clutch
$2000 EMS
$1000 rad + cooling
$1500 IC
$2000 Turbo + manifold (unless you're going stock twins?)
$1000 Exhaust
$100 IC piping
$200 materials for mounting
$500 front anti-sway bar
$1000 Recalibrate suspension
$500 Ignition system
$1000 Fuel System
$3000 Rims and Tires
$1000 LSD
$400 Mazdspeed PPF

good luck dude

 

Come on now, rims and tires? What does that have to do with a motor swap?

Well, you can get an engine from Corksport for $3999 and that includes the stock twins, manifold, ecu, intercooler, basically the whole front clip. A lot of custom work would be needed to fit this thing in.

 

I'm getting really tired of hearing ideas about outrageous conversion. Especially from newbies.

Honestly, if it were that easy and cheap, don't you think everyone and their mom would have one buy now.

What seems to be the most easy and, gives the greatest power punch from is a Single Turbo.

That has proven to be very useful and is within the realm of reality for most people.

 

I just posted what people normally get, no one was responding so i decided to add my $0.02 in (actually its something i just happen to have copied off aother post a long time ago and had handy).

 

TwinturboTeddy,
honestly I dont think that swapping a 20B into an Rx7 is such an outrageous swap. Especially if your in a situation where you need to replace your stock motor, you mind as well spend a few more thousand to get the 20B rotor instead of the 13BREW. Also, I never mentioned anything about how cheap or easy the swap was going to be. Yes, i do agree with you that the single turbo is an awesome deal factoring in the hp gains. However, i just wanted some information on the 20B engine. Is that so bad? If all you can do is critize Newbies and not offer any advice to the Rx7 community, why dont you just make your own Rx7 club that everyone can join to trash talk. Thats just my opnion.


Thanks Lone Wolf and Skunks for your advice.

 

If YOU as a NEWBIE would only take the time to SEARCH, your answer could have been answered.

What Teddy stated is the truth. This forum sees your question all the time. Every week. Every month. It gets VERY old. A few people have done the swap. More than a handful of people, but certainly not enough to make the swap called "common".

So in essence, my advice to you would be to SEARCH.

 

Ohseyun,

I think the main problem is that so many people drop in the forum and talk about putting V8's, 20B's or other engines in the FD until they realize that it's not as simple as just "plug and play".

So, a lot of FD owners just get tired of seeing the same message especially when none of them ever try to attempt it.

 

K, here is my skinny on the situation. I AM gonna do this swap. I just bought my friends stock (besides wheels and tires) 93 FD for $12k and got a loan for $18k. But will someone please tell me if there is a specific forum for 20B "people". And what the best way todo a search for info on it. I also am gonna attempt todo this myself and document by either hi-8 or digi cam it.

 

If you cannot locate the 20B forum, which is clearly labelled on the main page, I think you are in over your head. As if the fact that you were BORROWING the money to do your conversion didn't already convince me.....

I highly suggest you cancel your loan and you drive the car as it is for a while....and do additional research. Pettit's conversion costs upwards of $35k and they STILL have to mess with the steering rack.

 

What does borrowing money convince you of? I bought the car for $12k and have $6k left over to do reliability mods. And because I am unable to locate a forum means I am in over my head? I do not see a forum that says 20B ONLY FORUM. So if someone could point me in the right direction or give me a link that would be great. And not comment on my abilty to overlook my computer screen.

If you are going to flame me, please come up with valid reasons to do so.

Thx,


Eric.

 

welcome to the forum!!!!! You will run into alot of ******** on this forum, but theirs a lot of good guys and even some girls. You will learn what to ask and what not to ask. Just dont let people get to ya!!! later Dan.........

 

20 B forum -->
https://www.rx7club.com/forum/forumd...?s=&forumid=95

 

Boy this thread really shows who knows what the hell is going on...

Sure, you can do a "budget" swap that will require a lot of time and effort on your parts, so you are you that talented to pull such a conversion off?

Some points to consider...
*The FD runs a pull-type clutch that is not going to hold up to the torque of even a mildly modified 20B - do you keep the pull-type clutch or do you do with a push-type conversion?
*The stock engine subframe doesn't work real nicely with the stock 20B oil pan - do you go custom oil pan or do you go custom engine sub-frame?
*The Mazdaspeed upgrade PPF has been discontinued, as far I know.
*How you do handle the engine control system?&nbsp We already have one person who has pulled off a stock ECU, stock AFM, stock coils, stock auto trans, but stand-alone EMS is usually the typical route.
*How do you have the ignition system?&nbsp There's an expensive and a cheap way to tackle this dilemma; it's slightly tied into the stand-alone EMS decision.
*Rims and tires?&nbsp Sure, you think your existing rims and tires are adequate to handle the increased torque?&nbsp We usually recommend at least 315's in back if you want to have sense of the word "traction".
*The extra torque and weight is going to need some tweaking of the suspension - I hope you're not going to assume your existing suspension is going to work with a 20B conversion?
*The FD3S steering rack needs to be relocated - can you handle this by yourself?

Some of these points don't need to be answered.&nbsp Sure, you can run around with 245/45/16 tires in the rear and just keep a very controlled right foot, but what's the fun in that?&nbsp Others are required to be answered - the custom engine subframe and steering rack relocation are just two of the many.

You gotta be kidding yourself if you think this conversion is anything close to "easy".&nbsp I find the number of existing, running examples of such a conversion is directly proportional to how easy or hard a certain project is.&nbsp I think we can count the number of 20B FD3S's running around on both hands?&nbsp Sure on all our fingers and toes...

So those people who think this is a proverbial "walk in the park", I'd say try it and put your money where your mouth is...&nbsp You'd be surprised what people say and people do are very different in the real world.


-Ted

 

Not to forget that when you move the steering rack, you affect the suspension arm symmetry.
Basically, you'll have to deal with bump steer.

You can avoid moving the steering rack if you cut away at the firewall a bit and perhaps use a shortened driveshaft.

It's a walk in the park. If you've changed a tire out before, then you are ready for a 20B swap. At least that seems like the mentality on the forum as of late.

J

 

Nicely said Ted..

JonesersRX7..
Let me get this straight.. You got a loan for 18k so you could pay for the car and have 6k left over.. So do you just have another 30-45k layin around in cash or are you gona borrow that as well? This is not an easy conversion or a cheap one..

-Derek

 

I'm an RX-7 newbie to, ive only had my for about 2 months and i cant understand why you wanna have a 20b in your newly bought Rex????

If you buy an RX-7 you should be happy with the 13B engine, i know i am.

The 13B is enough for like 500 reliable and drivable HP

 

NEWBIES: Keep these questions coming. Look at the great response. Obviously everyone loves to throw their two cents in...look at me!

Ignore most of the crap on this post, although Ted has some really good points for consideration.

Otherwise search. If you are truly interested in the 20B conversion, start from the beginning in the 20B forum and read all of the threads. There is a ton of info there, if you read it and understand it, you will be ahead of most others.

TobiasRX - I can't understand why you wouldn't want a 20B. But to each their own, right?

 

In respect to Ted, Thank you very much for your reply it is greatly appreciated I have read a ton of your posts and you seem extremely knowledgable.

As for TobiasRX, I have been building out Chevy F bodies (Camaros). Everything from front corvette clips to about 12 motor builds. I guess I just like to play and take on a good challenge. And plus why not show that one guy that busted my ***** here in, rynberg, a thing or two of what can be done on a "budget in 8 months.

And maybe I will find that it will be a pain in the *** but I am looking at options. Motor has 105k on original engine. Maybe I will just do a built 13B or 13B-REW haven't found a good way to search for that yet... but.

Thx for the info guys.

 

I try to avoid these kind of flame wars as a rule and I think that most of the people on here would tell you that I do try to help others.

But I am getting a little sick of people that don't even own an FD or who just got one bringing up the 20B conversion. Do a search, it's a weekly topic. The point is that it is not an easy conversion and very few people are actually running around with a 20B. I admit that RETed wrote a little more eloquently about the problems with the conversion and I probably was a bit of a smart ***, but if you are resourceful enough to do the swap yourself, then finding the 20B forum shouldn't be too difficult for example.

Have you read through JimLab's V8 swap post? Albeit, his goals and financial resources might be different than yours, but it's a good thread to see the kind of work involved in this type of project.

If you are truly resourceful and can do this project correctly with your limited budget and knowledge of FDs, I will be the first to congratulate you.

 

( don't criticse me I am not a newbie, I know I don't have a lot of posts but thats because I don't like to B.S like a lot of people. I am just as not as opinionated on this stuff anyway) well this conversion I agree is going to take a long time and money but in any cse If he has the resources (i.e. he can get the stuff for free. yeah like thats going to happen) its possible. you're right that you can get the con from pettit but thats you have to have $$$$ but if you do it yourself you risk either majorly scewing it up and wasting your time and money but losine faith in the project over the long term for how long it is taking and not being able to drive the car. this ins not from experience mind you, but my idea of this conversion is either pay big bucks and have it professionally done or dyi and spend a huge amout of time and an uncalculated amout of money on something you might never get done.

 

For all the Newbies out here,

Ted has tonz of great information. His information pulled my butt out of a couple slings when I was driving my 87NA. So listen to what he says little Padowan learner. Besides he is opening (or just did) a shop of his own specificly for RX7's and rotaries(please correct me if I'm wrong).


Ted, any suggestions as to how to squeeze 315's under an FC?

 

I can beat that price. Mine is $39,900--ready to go.

www.cris.com/~Asam/20B.html