Turn a Miata Into a 1930s Monoposto Racer

David S.
By David S. Wallens
Dec 24, 2020 | Miata

For those of you who missed the forum post: How about a kit to create a 1930s grand prix racer from a Mazda Miata donor car? No, it's not April Fools. Yes, you should build one. (Thanks, Keith, for the tip.)

 

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Vajingo
Vajingo Reader
12/22/20 8:55 p.m.

The want is hard

Donebrokeit
Donebrokeit UltraDork
12/22/20 9:48 p.m.

I wonder what it would take to make this car compliant  with SCCA rules?

 

I would be willing to sell a few of my toys to pay for this and clear up some shop space.

Snrub
Snrub Dork
12/22/20 10:02 p.m.

That's awesome!!

Tom1200
Tom1200 Dork
12/22/20 10:04 p.m.

I totally want one....sign me up.

Loweguy5 (Forum Supporter)
Loweguy5 (Forum Supporter) Reader
12/22/20 10:06 p.m.

Ironically I was just thinking what a win a kit like this would be a few days ago.  Once again I've proved (to myself) that I'm damned near a genius and always a few days late.

If it fits generously proportioned gentlemen I might be a buyer for one of these when they come stateside.  And I would pay extra to build it alongside Ant.

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
12/22/20 10:47 p.m.
Donebrokeit said:

I wonder what it would take to make this car compliant  with SCCA rules?

 

I would be willing to sell a few of my toys to pay for this and clear up some shop space.

I know Ant really wants to get a series going for them. SCCA regs vary by class, but the roll bar is built to MSA requirements. 

I think they're surprisingly big. As wide as a Miata but with that long boat tail. 

RevolverRob
RevolverRob New Reader
12/22/20 11:39 p.m.


 

Now...can I fit a K-series in there with a KMiata gearbox adapter? 

nderwater
nderwater UltimaDork
12/23/20 12:08 a.m.

Speechless. What a thing.

RichardSIA
RichardSIA HalfDork
12/23/20 12:16 a.m.

If only an Alfa 2.0 could be used instead of Miata, hmmm now who did that? wink

Amazingly similar to a project I've been loosely working on for a Geo 1.0 or 1.3 powered build. I have been looking for old Sprint Car body parts. I want just a body and grill.

With the chassis included I expect this to be expen$ive.

NOHOME
NOHOME MegaDork
12/23/20 6:17 a.m.

Lose the fake exhaust tubes and the cat and I am on board.

Underhood pics?

Saron81
Saron81 HalfDork
12/23/20 6:47 a.m.

£7500 doesn't even seem that bad!

tuna55
tuna55 MegaDork
12/23/20 7:10 a.m.

Dang. I love that

ChrisTropea
ChrisTropea Associate Editor
12/23/20 8:20 a.m.

Image may contain: text that says '* I NEED IT'

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
12/23/20 8:27 a.m.
NOHOME said:

Lose the fake exhaust tubes and the cat and I am on board.

Underhood pics?

Lots of comments about the fake exhaust tubes on Facebook too. Thing is, this isn't a generic 1930's monoposto. It's intended to look as much as possible like the very successful Alfa 158 - I believe Alfa is on board with this. And since the 158 was not some Offy-powered sprint car, it's just not right for it to only have four exhaust pipes. Think of it as cosplay.

I have some underhood pics but I need to get permission to share them. Ant isn't keen on too many pics of the grey prototype getting out there because it's well, a prototype. The red kit is being assembled shortly and I've mentioned interest in a bunch of pics of the various extra parts that are available.

Syscrush
Syscrush New Reader
12/23/20 9:33 a.m.

In reply to Donebrokeit :

It should be good to go in some Time Attack class, right?

ZOO (Forum Supporter)
ZOO (Forum Supporter) GRM+ Memberand UltraDork
12/23/20 10:14 a.m.

The  build series is on MT on Demand: "Ant Anstead :Master Mechanic".  It's not as technical as I'd like it to be, but it still is worth a watch.

Curtis73 (Forum Supporter)
Curtis73 (Forum Supporter) GRM+ Memberand MegaDork
12/23/20 10:19 a.m.

The exhaust thing is a bit disappointing.

But that's just an excuse to put an actual straight-8 under that bonnet.

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
12/23/20 10:30 a.m.

The exhaust is a Rorchach test of sorts, it helps you clarify what you see when you look at the car. Is it an Alfa 158 that you can own without being a multimillionaire? Then it's part of the cosplay. Is it some sort of track weapon with the wrong tires? Then it is offensive posing. All depends on what you're looking for.

I'll admit I went looking for straight 8s as well. That is one dead engine layout, there's nothing since the 159 was actually a viable race car.

tuna55
tuna55 MegaDork
12/23/20 10:44 a.m.
Keith Tanner said:

The exhaust is a Rorchach test of sorts, it helps you clarify what you see when you look at the car. Is it an Alfa 158 that you can own without being a multimillionaire? Then it's part of the cosplay. Is it some sort of track weapon with the wrong tires? Then it is offensive posing. All depends on what you're looking for.

I'll admit I went looking for straight 8s as well. That is one dead engine layout, there's nothing since the 159 was actually a viable race car.

I think you use a jag I6 and use an inline six header and it is a nod to the original without posing.

tuna55
tuna55 MegaDork
12/23/20 10:45 a.m.
tuna55 said:
Keith Tanner said:

The exhaust is a Rorchach test of sorts, it helps you clarify what you see when you look at the car. Is it an Alfa 158 that you can own without being a multimillionaire? Then it's part of the cosplay. Is it some sort of track weapon with the wrong tires? Then it is offensive posing. All depends on what you're looking for.

I'll admit I went looking for straight 8s as well. That is one dead engine layout, there's nothing since the 159 was actually a viable race car.

I think you use a jag I6 and use an inline six header and it is a nod to the original without posing.

Or weld two I4s together, which actually wouldn't be that bad.

Robbie (Forum Supporter)
Robbie (Forum Supporter) GRM+ Memberand MegaDork
12/23/20 10:48 a.m.
tuna55 said:
tuna55 said:
Keith Tanner said:

The exhaust is a Rorchach test of sorts, it helps you clarify what you see when you look at the car. Is it an Alfa 158 that you can own without being a multimillionaire? Then it's part of the cosplay. Is it some sort of track weapon with the wrong tires? Then it is offensive posing. All depends on what you're looking for.

I'll admit I went looking for straight 8s as well. That is one dead engine layout, there's nothing since the 159 was actually a viable race car.

I think you use a jag I6 and use an inline six header and it is a nod to the original without posing.

Or weld two I4s together, which actually wouldn't be that bad.

It was a 1.5L inline 8 right? use 2 GSXR750's?

RichardSIA
RichardSIA HalfDork
12/23/20 10:51 a.m.

C'mon guys, strait eight should not be that hard to do. Start with two fours and join them at the crank.

Remember the original Alfa took cam drive from the center to lessen crank/cam flex issues. So two fours joined in the middle is almost sort-of correct. The trick then becomes finding a trans that will survive and will it all fit? Bonus points for a supercharger, reduced points for turbo.

With modern engine management systems this should not be hard. I know a guy doing two 454's for a street-rod with TH400!

Curtis73 (Forum Supporter)
Curtis73 (Forum Supporter) GRM+ Memberand MegaDork
12/23/20 10:59 a.m.
Robbie (Forum Supporter) said:
tuna55 said:
tuna55 said:
Keith Tanner said:

The exhaust is a Rorchach test of sorts, it helps you clarify what you see when you look at the car. Is it an Alfa 158 that you can own without being a multimillionaire? Then it's part of the cosplay. Is it some sort of track weapon with the wrong tires? Then it is offensive posing. All depends on what you're looking for.

I'll admit I went looking for straight 8s as well. That is one dead engine layout, there's nothing since the 159 was actually a viable race car.

I think you use a jag I6 and use an inline six header and it is a nod to the original without posing.

Or weld two I4s together, which actually wouldn't be that bad.

It was a 1.5L inline 8 right? use 2 GSXR750's?

Dear god in heaven.  A straight 8 that spins to 13,000 rpms.  

See the source image

Jim Pettengill
Jim Pettengill HalfDork
12/23/20 11:07 a.m.

Way cool - I watched the whole build series on Ant's car, to see it available as a kit is great.  Who is going to be first to build one (at 75, it won't be me.  If I was 40,though . . .)

Robbie (Forum Supporter)
Robbie (Forum Supporter) GRM+ Memberand MegaDork
12/23/20 11:08 a.m.

In reply to Curtis73 (Forum Supporter) :

They'd very nearly bolt together from the factory. Remove the starter and starter clutch from one side and the stator/generator/housing from the other. Then you just need an adapter plate between the two cases and a collar to connect the cranks.

Buy 00-03 SUZUKI GSXR750 ENGINE motor block transmission GSXR 750 GSX-R 20k  mi 750cc motorcycle in Duncan, South Carolina, US, for US $799.00

RichardSIA
RichardSIA HalfDork
12/23/20 11:19 a.m.

MC engines tend to have oiling issues unless dry-sumps are added. 

Two TC fours for the win. Alfa of course, Miata, Toyota, Ford, Suzuki, etc.

They should ideally be rebuilt for matched specifications.

From the site, "This is being offered at a pre-launch Christmas price of £7,499 +VAT". OK, that's only about $10K, so I'm certain many of the parts shown are extra cost. Little things like the wheels and adapters, seat, what else? 

No VAT for export but shipping will make up for it. I wonder what the actual all-up price might be?

 

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
12/23/20 12:01 p.m.

Pricing not yet released but here are thumbnails of the other parts required to complete. You can source your own or buy the sub kit.

 

 

Tom1200
Tom1200 Dork
12/23/20 12:05 p.m.

Mega!!

wspohn
wspohn Dork
12/23/20 12:19 p.m.

Put a set of four cycle fenders on it to make it streetable and that would be something.  I don't find the 8 pipes that cheesy but it would be far cooler with a pair of Ecotechs joined in the middle for a biturbo straight 8 (let's be really conservative - only a 600 bhp 4 liter, which is basically stock output).

RichardSIA
RichardSIA HalfDork
12/23/20 12:28 p.m.

Similar to this. 

californiamilleghia
californiamilleghia SuperDork
12/23/20 1:50 p.m.

How much for one just like in the first picture , ready to run ?

$25k , $30K or ?????

its a great idea ,  just wondering how many will ever get finished !

Kit cars seem to have that problem of not getting done....

Anyone want a GT40 on  VW chassis ?

Keith Tanner
Keith Tanner GRM+ Memberand MegaDork
12/23/20 1:57 p.m.
californiamilleghia said:

How much for one just like in the first picture , ready to run ?

$25k , $30K or ?????

its a great idea ,  just wondering how many will ever get finished !

Kit cars seem to have that problem of not getting done....

Anyone want a GT40 on  VW chassis ?

If you want the person building it to get paid for their time, I'm guessing $30k. But the pricing for the sub kits hasn't been released so that's a WAG. I don't recall what we used to charge for an Exocet, that would be a good data point.

modelcitizen72
modelcitizen72
12/23/20 2:20 p.m.
RichardSIA said:

Similar to this. 

This is the part where I start screaming.

I'm already liking the idea of a Miata body without rust concerns.

Two seats and a windshield?

(Hypothetical piggy bank cowers.)

 

 

modelcitizen72
modelcitizen72 New Reader
12/23/20 2:25 p.m.

Now do a Morgan trike on Chevy Cavalier guts, or 12/10ths Mini with Taurus or Lesabre/Bonneville or GM10 machinery.

 

Edit: it could be fun to have a component car that feeds on bland or loathsome vehicles.

Ding: a 12/10ths Mini on Caddy Northstar running gear would be like CWS Tuning's Coupe de Golf.

pres589 (djronnebaum)
pres589 (djronnebaum) PowerDork
12/23/20 2:35 p.m.
modelcitizen72 said:

Now do a Morgan trike on Chevy Cavalier guts, or 12/10ths Mini with Taurus or Lesabre/Bonneville or GM10 machinery.

 

Edit: it could be fun to have a component car that feeds on bland or loathsome vehicles.

Ding: a 12/10ths Mini on Caddy Northstar running gear would be like CWS Tuning's Coupe de Golf.

wut

frenchyd
frenchyd PowerDork
12/23/20 2:49 p.m.
RichardSIA said:

If only an Alfa 2.0 could be used instead of Miata, hmmm now who did that? wink

Amazingly similar to a project I've been loosely working on for a Geo 1.0 or 1.3 powered build. I have been looking for old Sprint Car body parts. I want just a body and grill.

With the chassis included I expect this to be expen$ive.

You really want a 2600 Alfa 6 cylinder. All aluminum DOHC. 
newer?  Jaguar 4.0 DOHC4 valve per cylinder all aluminum. 6 cylinder. Some came with a manual 5 speed. 
 

RichardSIA
RichardSIA HalfDork
12/23/20 4:45 p.m.

If we are going for strait-eight the question becomes can we program a mega-squirt for alternative firing orders if needed?

Coupling two four's is the easy part.

As said, I'm sort of already working on something similar but smaller for Geo power as a local runabout toy. In one more week I become dangerous as I will have funding. surprise

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