I am looking around for another FD and put in a 20B engine in.
I am very green and need all your help, the ones who have done this.
Will the stock trandy works with the 20B? What should I be looking at? What parts do I need? Thanks guys.

 

Have $20,000 in cash ready...there are several shops that can help you with this conversion.&nbsp Shane Racing on the west coast and Pettit on the east coast...


-Ted

 

I live in Toronto Canada, I am not planning on going to the US to do this. There is a local shops that can get me the engine and I might have them install it too, but the thing is they have done alot of engine swap for hondas but never with a rotary. So I am thinking what do I need to do this?
and RETed $20,000US just for the engine and other parts and labor? Of you are inculding the price of the car too?

 

Prices are all in U.S. dollars.

$2000-$4000 for the engine itself
$1000 for a clutch durable enough to handle the torque (unless you gonna keep it under 500hp?)
$2000-$3000 for "engine subframe" for your FD - this is typical prices from either Shane Racing or Pettit
$1000-$3000 for stand-alone EMS to control the engine
$1000 for front-mount IC
$500 for custom radiator set-up

You'll still need to move the steering rack and anti-sway bar, but I think the custom engine sub-frame takes care of this?&nbsp I do swaps into FC's, so I can't give you accurate info on an FD swap.

You'll still need to mate with the exhaust system.

There are slight clearance issues with the intake manifold.

Add a couple thousand more for a single turbo, if you're not going to keep the stock twins.&nbsp Add more money for the custom turbo exhaust manifold.

This doesn't even include an engine rebuilt, which can easily add another thousand on top of everything else.

Notice, this has easily broken over $10,000 just in parts.&nbsp I dunno who is going to do the labor, but Pettit charges over $30k for this job - doesn't include the costs of the car itself.




-Ted

 

Attached is a list of components and associated costs for the FD 20B conversion.

There are four columns, the 1st and 3rd are associated with the budget build up, the 2nd and 4th are toward the high end.

I know that this is not entirely accurate, but it is a work in progress. If you have something constructive, please let me know...I can do without any flames.

 

I don't believe that there is an existing custom subframe for the FD that allows you to drop in without cutting into the firewall or relocating the steering rack.

It may be possible to overcome this with a new custom subframe with (or without?) the use of a dry sump oil system (almost $4K for the dry sump).

I need to contact Granny's and see if they think they can come up with something with the wet sump.

If that is a dead end, I am going to contact Mazda Motorsports and see what I can find out about the dimensions with the 20B dry sump and what kind of clearance that will give you.

Any one know anything else?

 

WOW! A Carburated 13B swap with new exhaust, radiator and everything, installed for $7000 doesn't seem so bad now...exept that it's NOT a 20b. Sigh.

 

Holy cow - you're talking about a $1,000 pan and another grand for the pump and oil sump!&nbsp But then again, I just went through your .xls file, and $45k is nothing to sneeze at!



-Ted

 

Hehe I noticed the HP estimates were at the "crank" Shouldnt that be estimates at the "E-shaft"

 

Note to self. Change to HP at the engine on next revision...Well, at least you didn't mention the other mistakes.

 

Damn this thread has a lot of great information in it.

I was toying with the 20b idea and I might have sold myself on it now.

 

I'm new to this forum and I don't know much about the 13B or the 20B specifically, but when did a rotary become a torque monster? I have never heard of a rotary with a huge amount of torque. I would think that a rotary with about 500HP would only put out about 350ft/lbs of torque. I'm no expert though, and I'm not going to try to be. I'm not trying to flame you or anything, feel free to correct me if I am wrong...

Peace

Jeremy

 

Check this thread. It has some torque numbers. Welcome to the 20B, say hello to torque.

https://www.rx7club.com/forum/showth...threadid=46073

 

Wow, I had no idea that the 20B could make so much torque... Thats awesome! I guess you live and learn...

Peace

Jeremy

 

Displacement = torque!

 

We have found that at the same boost levels a 20B will put out in excess of 50% extra torque over a 13B, we can only assume that the extra firing points per revolution are responsible for this. NOT 100% certain though.
Regards-Anthony
Just finished 20B conversion in FD, invoice $32K over 100hours labor but that included manufacturing everything and supplying the lot. We normally charge approx $10-15k for same performance 13B. But they will never sound like a triple rotor. (Aussie Dollars)

 

so thats a little under $20k USD? nice price

 

yeah i just talked with Pettit earlier today, and its going to be $39,825.00 out the door, for their Banzai conversion, which covers basically everything. suspension and all. i started talking with them about parts, and i am gonna supply all the parts for performance while i pay them for labor. to do everything on it, it requires 150 hours labor. at $70/hour rate. plus parts on everything. i am definatly starting this project next winter after i find my new CYM fd. However i get performance parts at dealer cost so it'll make alot cheaper. plus i am gonna be using a big single. but still only want around 550 rwhp at 12 psi. i told them everything i wanted and he said not a problem. be running low 11's out of the box, and 10's are easy. takes about 3 months to do, but they can rush it. They also use a Lynx system to manage it. He's faxing me a full price breakdown tomorow so i'll see exactly how much its gonna cost me.
Jason


86 GXL
Haltech
Big turbo
Lotsa Fun

 

Does Pettit still offer a warranty on the Banzai?

 

you know i'm not sure on the warranty, as far as the motor warranty goes yes it has their normal warranty (which i need to ask about) but it is just rebuilt 3mm seals street ported etc.

Jason

 

i've done sold myself on a 20b now for when I can start my FC project......

anyone have the .xls sheet again I dont think I ever downloaded it.

 

As for the guy earlier who quoted a price for Turbo II conversions:
Whoa, $10k for a TII conversion? Shiiat. Was that a typo?

 

$10K for a bare-bones DIY conversion
$20-30K for a quality DIY conversion
$40K for a shop to convert it for you

Of course, it depends on which country you are in, your skills, what you start with, and what you want to end up with.

A good high-boost single-turbo 13B setup is going to cost you $10K, so I don't see what the big deal is.

 

i dont either actually. i did my swap for 4 resaons
1. to see if i could do it
2. becuase someone was kind enough
to dissassemble my good running fc for me
3. they do sound cool, huh?
4. to see if i could do it in under 3 months (ok how about 6?)

and yes i would fail a sanity test, but the actual total dollar figure was not that important.

mike

 

hey - rx treme - u say they are using a lynx system to run your 20b - do u have any more informatin on it? Im in nz & we have link computers here - could it be the same thing?