didn't want to turbo the renesis engine I didn't want to be like every other person, so, i did the next best thing, Turbo 20b engine, here are the first early pic

another pic

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this was my car, Silver Rx-8 with a 3" drop

That car could have been so awesome if it wasn't slammed that horribly :(

Not Really, It dont rub or anything,, The lower the better, for top speed, Even more now, that the 20b is in it.

But i have to bring it up 1" cause i getting the mazda speed body kit install. and the side skirt would be to low, maybe,,i have to see once it's done

here are more pics

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sounds awesome. post final pics, numbers, and dyno, if possible, please.

also how long did this project take you?

here is another pic

We started the project on monday, Today we will start putting the turbo setup in, the car needs to be ready to debut at SEMA, But i want to have it out and running by next month.

Originally posted by ACOSTARACING
Not Really, It dont rub or anything,, The lower the better, for top speed, Even more now, that the 20b is in it. That's simply not true, specially since you cut the springs. Either way, I was referring to how it 'looked' not if it rubbed or not. Lowering a car is fine, but slamming it like that just makes it look awkward when the wheels dissapear into the wells like that. Rubbing or not, it just looks bad now :(

Otherwise, awesome work ! :)

I dont like the way the rx-8 look from stock,,, is too high

the stock rx8 is to high. It looks good lowered. Cant wait to see the final project. What springs did you use to lower it

Well the first springs i cut. SInce it didn't rub or anything, i took it to a spring company and had them make me duplicates, the right way, and now, that's what i have. Custom

nothing wrong with custom. I want to drop mine too

Originally posted by mikeb
nothing wrong with custom.

...other than, when carelessly done, ruining the vehicle's cornering dynamics... if done the right way, you can optimize it for high or low g-loading, but if done wrong you obliterate the masterwork of this car's suspension.

Well the car dont rub, I have taken some curves at 120+mph and the car drives and handles perfect, even better than factory

It's great when you HAVE money like that.

Whee! You get a new car and rip out it's guts. Then you drop it 3 inches and slam a 3 rotor 20b engine in it! :eek:

Please let us know what the final tab comes to. If the price is right, maybe I'll bring my car up there for a retrofit. ;)

edit: suck it down

Help! Grammar police!

"Ain't done gone rollin' ridin' swappin' friggin'........"

That's what it sounds like to me... it pains me to scan through some threads. I can FEEL my literacy decay. Sorry for this post containing nothing to do with cars, but please people -- I swear you're hurting each other intellectually.

How difficult was it to cram a 20B inside such a small engine compartment? How about engine mounting points and such? How's the weight distribution now?

The engine compartment is actually bigger than the 93 rx-7. after you remove the ecu and battery. Acostaracing has done alot of wiring to the car to make it work. The weight distribution will be almost the same, cause we are adding weight to the front of the car, but at the same time we are adding weight to the rear of the car, (ex, battery) my ecu is now in the front passenger side like the FD rx-7. I'm very very happy with the project so far, everything is goin so perfect.

How about the tranny and differential? Are you going with the stock units or replacing them along with the renesis?

as of right now, stock. We would try it, if it breack then i will probally put a FD Tranny, And maybe a FD Rear

Sorry for asking so many questions, this is so exciting! :D

What are you planning to do with the renesis you pulled out?

good work man injoy your ride .don't worry what anybody say is your live your money your car . it looks good all the way around.

The Renesis engine is for sale, if anyone wants, it, and the I have a spare 6 speed also, PM me IF YOU are a seriou buyer

P.S. Trust me!!! i plan on injoying every single drop of it,

Originally posted by ACOSTARACING
as of right now, stock. We would try it, if it breack then i will probally put a FD Tranny, And maybe a FD Rear

From what I've read on the tranny, it should be very breakable with a 20BT in front of it. Perhaps if you break it while dyno tuning, we'll have a very good idea of what power levels it'll cope with before grenading? ;)

Awesome project...

I'll Post up any info. That i feel will help all the rx-8 owners. Who are planning to turbo there car.

Any Rx-8 owner who are near Acosta Racing, is more than welcome to come in, and see the project,,,,( BUT NO PICTURES OF THE OTHER PROJECTS IN THE SHOP) pm me, anyone that's intrested

i knew that have seen the garage and the red rx7 before . he does excellent work .did he repair the mx3 racing car .:D

No he has a new Pro Import pro stock truck ( Mazda ) with a twin turbo 3 rotor. He made real good power with it.

ok guys,,here are early pic, of the turbo install. tell me what you think

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Looking good, but I'll believe once its running. ;) I wonder how the electronics are going to work out.

looks great Acosta... so what spec T04 is that?? the polishing is really nice.

one question: why the stock intake manifold??

The Electronics is already done. That was actually the first thing they did.

The turbo is a T78 Dual Ballbearing turbo, By Innovative turbo System. It is a Q-trim wheel, with an A/R of 1.32

The reason we wanted to use the 3 Rotor intake Manifold, is because i want the car to look like that engine actually came with the car ( hehe) remember this is goin to be a show car/ race car. for the street.

That engine bay is friggin huge! What exhaust are you running out of it? I'm curious what a stock-like setup would sound like with the 20B exhaust pulses.

well we are goin to run two muffer to keep it dual. it muffer would be 2 1/2 and is goin to split for a Y from the down pipe. the down pipe will be 5" And we will be using Magnaflow muffer all stainless steal. We are very very excite about this project

Gawd, 5 inch downpipe. That thing is going to be monstrous.

Originally posted by daedelgt
Gawd, 5 inch downpipe. That thing is going to be monstrous.

...the exducer on the t-78's hot side is 5"??? :eek:

The turbo we are using, comes with the Exhaust Housing 5". Remember guys the 20b engine creates alot of heat. So we need to bring the heat out as soon as possible. If not we'll have back-pressure. With Back pressure i'll be cracking the manifold, and the motor will suffer.

Originally posted by ACOSTARACING
The turbo we are using, comes with the Exhaust Housing 5".

...wow, i didn't know that. huge ass... but understandable for 800hp through a singlet.

What did you have to do to get the 20b engine to mount in the RX8?

Alot of work and alot of wiring, we made everything harder cause we kept the hole suspension stock. So that way i wont get no bumpstear or nothing. Because we did it this way, we had to custom make new mounts, oil pan, and couple more parts. You will have to call up the shop, for more info, speack to them

Any one here from the east cost would like to come to the shop and check out the project, you are welcome too. I know alot of people wont believe till they see.

I would go see your 8 if I wasn't 3000 miles away. Will that 8 ever be in ca for car shows

We will be at the SEMA Show In vegas, NV

Hmm..I'm about 10 minutes away....

wow, thats a cool project. i cant believe the 20b fits in there! thats very nice, hmm

mike
20b fc

Well it doesn't fit, hehe,, alot of work was done to make it fit.

when is SEMA?

first week of November

You have to be a dealer to get into sema or well connected not just anyone can go

to have a booth yes, or pay alot of money, But if you only want to go see the show, any one can go in. We migh be in the Magnaflow booth or In the NOS booth. To display your car though in the show, you need to be invite by the company

anyone can go to sema. I didn't know that. I'll drive from ca to vegas for that. Do you know how much it cost to get in the show

To see the show i think is 25 bucks for the hole week

that is a private autoshow only cars manufacturers ,after markets ideas and vips and news people can get in.

No,is open to the public also..... that's how the company make there money

last time i was in vegas the show was there and a sign said at the gates not open to the public . on less they change there rules and know the public can go in .

they always let the public go. Except the first two days of the show, That's probally when you saw the sign

Marcos / Orlando:

Looks nice. Those parts look familair? Are those the same chromed ones that we picked up for my 20b?

No worries if it is, just curious. If it is, you can just chrome all my new parts for the new engine.

Just for kicks, take a picture of my car. I am wanting to see it with the engine hood open.

Thanks,

Mike

Not the same, and no problem, i'll take a pic

Excellent.

Take a snap of it now if you wouldn't mind. I haven't seen my baby in a while.

Oh, and don't forget to call me tonight!! Remember, you promised! :D

Fokes:

MVA does AWESOME work. Of the little stuff on my car which was completed before the fiasco, it was TOP-NOTCH. We are starting the grind again, and the PROJECT is now set back to RESUME status.

Throw those pictures up!

:)

Mike

ok in a little bit, but remember is Acosta Racing,

Mike do you want a picture of the car with all the Polishing stuff on or the way you saw it last time

Acosta racing.. ya ya. I will remember it.

In a little bit? LOL. What, do you have to push it back inside? :o

Both would be great.

The pretty polish would be nice, but then you would have to put it on, yes?

yea i will have to get it out of the boxes and put them on

Originally posted by ACOSTARACING
well we are goin to run two muffer to keep it dual. it muffer would be 2 1/2 and is goin to split for a Y from the down pipe. the down pipe will be 5" And we will be using Magnaflow muffer all stainless steal. We are very very excite about this project






Wow!!!!!! A magnaflow muffler on a 20b? You have got to post some audio clips when it's running. Do you think the car will make it to sevenstock?

Marcos,
Please do us all a favor and bring that beast to SevenStock-6 on September 27th at Mazda R&D. Abel will be bringing his ride, so now all we need you to do, is bring yours.

Shoot me an e-mail or PM your # and we'll talk!


Event Details: http://www.sevenstock.org/

thanks,

Bern
SevenStock Director
berny@rotarynews.com

We will Try

.. still waiting. :)

here are pic of my just finish Turbo manifold. It stills need finishing touches, Like heat coating. hope you guys like it.

.

Not working.

Try again.

lets see if this works

sorry it's not working, i'll try again in a little bit

ok one more time

ok last time

.

.

i can't seem to put up more pics

Looks nice..

But what about mine?

here is your car, same way you left it.

.

VERY NICE :D

here are pictures of my just finish intercooler. tell me what you all tihnk

.

What are you going to do about the radiator arrangement after you fill up the entire front end?

what do you mean, I'm using a CR racing Radiator

Oh, didn't know that ;)

Yea, we change the radiator to a much bigger CR racing radiator, in order to keep the temp. cold.

guys i saw the Acosta Racing rx8 and its freekin amazing....i was there a week ago to get some work done to my 20b intake manifold and i saw the car close-up & in detail....the way they did the mounting of the motor was slick,it shouldn't affect the balance of the car cuz the motor is mounted way inside the trans tunnel....that car will handle better than stock & it will be very very fast.....they keep a very clean shop and they know alot about rotarys & race car fabrication....i'm thinking of having them do the roll cage on my 20b 1st gen rx7....u guys gotta see the dark silver FD they're working on,its sick :)

Well actually the motor is mounted on the stock rx-8 mounts, So we modifed the mount to make the motor fit, BUT we didn't cut the firewall, Cause i know people are goin to start asking me that.

Ok guys here is the pic, of my intercooler mounted on the car. Let me know what everyone else thinks about it.

.

here is the pic of the turbo manifold,

Originally posted by ACOSTARACING
Ok guys here is the pic, of my intercooler mounted on the car. Let me know what everyone else thinks about it.

Looks huge!

AWESOME--thanks for all the updates

Originally posted by Digisan


Looks huge!

sure, size matters, but what've you done for internal streamlining??

btw, the exhaust manifold isn't all that pretty with the unequal lengths, but very slick fabbing to situate the turbo like that. kudos to you. :)

My engine is done.

- Acosta Racing race ports
- 3mm apex seals
- water jacks
- racing oil seals inner & outer
- racing gasket set
- 89cc Primary injectors (3)
- 160cc Secondary injectors (3)
- 35cc AUX Injectors (3) ( Methanol to cool down the air @high boost)
- Acosta Racing Fuel Rail
- Weldon Fuel Regulator
- 4 Bosh Motorsports fuel pump
- ECU
- extra down-pins

Yay! Time for dyno tuning. Post plots when you get them. Everyone loves dyno plots.

once the car is done, i will post the dyno sheet, and video clip if i figure how to do it.

Ok guys, anyone who is intrested in seen the car in person. Well here's your chance, the car will be on display on Sept, 27-28 @ Sevenstock. So now is your chance to see it, in person

Did you guys keep 8s transmission? Also, how many horses and ft. lbs. does it have now? Will it be as fast or faster than 3rd. gen. RX7 stock?

*mod edit*

theres a rx 7 meeting on Sunday September 14th 1pm @ Hooters rt23 south Wayne NJ.
Rain or Shine
im sure everyone going would love to see your rx 8 or any rx 8 for that matter .

wayne nj--I'm in cali but all my family is in wayne

here are pic of mike's 3rd gen with our conversion, that everyone keeps asking me about

.

here are pics of my race engine a twin turbo 3 rotor. everything done by us

thats really clean
love that red rx7

So how close to running is the 8to runing? and how much power does that tt 3rotor make?

Originally posted by ACOSTARACING
*mod edit*

HUH? A little explanation would be nice "MOD"

Well this sat is the big day. DYNO day. i will video the dyno so everyone can hear it and see it. and then post up the dyno sheet. After that the car heads out to SEVENSTOCK on tuesday. So i hope i see everyone there

Originally posted by ACOSTARACING
here are pic of mike's 3rd gen with our conversion, that everyone keeps asking me about

Dammit! Just the wrong angle so I COULDNT see what you did with the steering rack :( Trade secret I suppose :)

Good luck on the dyno

-pete

I cant wait to hear and see that 8

Trade Secret that i wont show. ;)

Well ya guys said saturday is big dyno day. What did ya get for results yesterday? :D :D :D :D :D

Sorry Guys we couldn't dyno on sat, the two dyno around here. Kaztech Motorsports, And Bullish Motorsports had no dyno time. So since we are heading out to Sevenstock on tuesday. we might dyno around there in front of everyone. However can any one tell me how to put a video or a sound clip of the car.

If you want to email me something I can host it for you for the time being. Nothing rediculous though, just a couple megs for the movie.

daedel@mac.com

ok perfect i'll email it for you

Wow, very cool. Would LOVE more info... such as how much would you charge to do this to another car, slightly less radical engine mods tho, as I need to drive my RX-8 daily.

And, can you tell us more about that georgeous red 8? What all have you done to it? Just a turbo? And what did you do about the ECU?

Thanks...

check out our site for more info,,,,but sorry i can't post up the site,,,,or they would edit it, "acostamotorsports"

where can I get a 20b engine????? How Much money??? How Much HP????? PLEASE I AM DYING TO KNOW!

Originally posted by RX8rotarydurder
where can I get a 20b engine????? How Much money??? How Much HP????? PLEASE I AM DYING TO KNOW!

The only real place to find a 20b was in the cosmo, a JDM only luxury car. (I think there was racing 3 rotors too, but harder to find).

As to price :

Originally posted by Red-Rx7
The 20b engine can be picked up for about 2500.00. Figure shipping cost, etc, you are looking about 2900, or 3000. Lets say 3000.00 for the sake of it. Now, to have a performance engine we need to tear it all down, put new housings in, new seals, etc. A typical place (pineapple, mva, etc) will charge about 6,000 - 7,000 for a ported, pinned, etc built 20B engine.

So, now you have 9,000 invested alone in the engine. But wait, you cannot just plop the engine in the car and go. Lets add some other things. Turbo. 4k is a good estimate. A typical Innovative dual ball bearing turbo runs about 2200.00 from them. Add the custom manifold, 1000.00 (conservative quote here), and a large wastegate to support the airflow, figure about 600.00. This right here adds up to 3800 not including shipping and other little nick-nacks (nipples, wastegate spring, etc, etc).

So, thus far we have 9,000 for an engine, and 4,000 for the turbo. Thus, 13,000 invested so far.

Well, lets talk about an intercooler and radiator setup. Due to the heat and cooling charge, a typical 20B custom intercooler runs about 1700 - 2800 in this industry. You could get away with an off the shelf unit, but that sacrifices other areas. For cheapness sake lets assume the intercooler was 1700.00 Figure piping now. Custom 3" piping and silicone tubing would run you about 300.00 when said and done. That is about 2,000 for the intercooler setup right here. A good radiator and fans will run about 700.00 total. Now, because you have a 20B you have to change the water pump housing design area too. This will cost about 300.00 extra. So the cooling area is now 1000.00. Total, we are talking an aditional 3,000.

To add what we have thus far, 9K + 4K + 3K = 16,000.

Ok. Yay. We are getting close. Lets talk about the ignition and computer system. We have to have one of these to run the car correctly. Lets talk about the computer system first. There are a few choices to choose from. A microtech, Haltech, and a few other more expensive choices. For sake of this particular conversion, lets go with the microtech. Once you add up all the computer stuff (LTX12, 3Bar, Wiring Harness, Wideband Sensor, Laptop Port, etc), you are at about 1700.00 or so. Also, you need coils to ignite the plugs. You will spend about 600 or so on just the coils, and an additional 120 on good wires and plugs. How are we doing thus far? 1700 + 600 + 120 = 2420 for the computer associated stuff.

16,000 + 2420 = 18420.00.

Now, lets talk fuel. We are not going to use the crappy stock injectors, lines, and pumps. We are doing it right remember. Add up all the large injectors, fuel rail, two fuel pumps, sump, and lines. You are looking about 2300 or so for all of this. Keep adding.

18420 + 2300 = 20720.

Now, lets get to the drive line issue. These stock axles cannot handle this torque and hp. Instantly, we are looking at 800 for new chromoly axles. What about the diff? Nope. Crap with this power. Add another 800.00. Ok.. Transmission? Wait... we will be using a Guru 6 speed dog box. Oh, that runs in the neighborhood of 8,000 more. What about a 20b flywheel and counter weight? Oh, lets throw in there for 650.00. Clutch? Yep, need a strong one for the job. This will cost you about another 500 for a good unit. Lets add up: 800 + 800 + 8000 + 650 + 500 = 10750.

Add it to our listing.

20720+10750 = 31470.

Ok. Not done yet! What about the gauges? All the Defi system is needed. Boost, Water tempature, fuel pressure, egt. Dont forget the pods. This will cost you about 950 total when all said and done.

31470 + 950 = 32420

Exhaust! Oh we forgot that. 4" exhaust with muffler, and setup stuff. That will be about 1100 total for the downpipe (custom made) through the back of the muffler.

32420 + 1100 = 33520.

Ok. Misc parts must be needed. All of this is what kills you. You can budget about 5000.00 for this. This would include all the little stuff. Shortening the LIM, and UIM, various little things that you need, hoses, etc etc etc. Ask any one who has done a 20B conversion, and they will tell you this kills you here. For a shop, the cost would be less. Lets average 2500.

33520 + 2500 = 36020

Now, what about labor, dyno tuning, etc?

I think I will stop here.


He does go on later (on another thread here, but total cost is over $80k - all this is rough guesswork and I dont think includes peoples time/work.

Originally posted by RobDickinson
The only real place to find a 20b was in the cosmo, a JDM only luxury car. (I think there was racing 3 rotors too, but harder to find).

As to price :

He does go on later (on another thread here, but total cost is over $80k - all this is rough guesswork and I dont think includes peoples time/work.

that's not quite the whole truth... check out Pettit, Pineapple, Kiwi (from NZ who happen to build and tune 4-rotors, as does Pineapple)... there are TONS of tuning shops who actually build custom 3 rotor engines for far less than $80k dollars. RedRX-7 has spared absolutely no expense in his estimation of the build, and that's an engine ready for ~900 hp. you don't HAVE to spend that kind of money to get 3 rotor performance. and all-motor 3 rotor could still probably hit somewhere close to 350hp in a street-drivable level of tune, and way way more with a p-port and such.

no the price Red wrote inlcudes the acutall RX-8. i can get you the engine stock from 2500-4500

Originally posted by ACOSTARACING
no the price Red wrote inlcudes the acutall RX-8.

:D see what i get for skimming?

but still, a really good motor can be built, tuned, and installed for less than $40k.

The 40K is just not motor. is every thing around the motor, plus labor, plus pick and delivery, ECu, tunning, dyno, MSD, etc etc. go to my website, and it shows you a complete list

Originally posted by ACOSTARACING
The 40K is just not motor. is every thing around the motor, plus labor, plus pick and delivery, ECu, tunning, dyno, MSD, etc etc. go to my website, and it shows you a complete list

...this is what i'm saying...