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Hello to all I'm new to the site and I was recently diagnosed by my doctor as having a bad case of speedster fever. I just picked up an unfinished 1957 wide body speedster as my latest project and the wife warned me that if I got it I would end in divorce court. I'm still waiting to be served with the papers and in the mean time I'm salivating at how I can fix up the speedster up. My buddy races mazda miatas and believes a miata motor will be just what the doctor ordered for some high revving good times with the speedster.

I do get off on a high revving race car sound/handling the miata engine could deliver. I ordered an engine adapter from Kennedy engineering to mate the motor to the transaxel.

My plans for my car since it already has a faded coat of paint from sitting waiting on its past owner to put it together is to leave it as is, and some race stickers and a number on the door and make it look like an old style race car until I can decide what color/interior to go with. My reasoning for wanting to use the miata motor is the racy sound and reliability of those motors as I plan it to be a daily driver to work. No sense having a garage queen I only touch/play with once a month for that I could remarry after this divorce goes through! Lol

My question for the forum members is has anyone used a miata motor or know of anyone that has and how it worked out? Thanks in advance.

Ernie Sanchez
Paso Robles, Ca
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Hello to all I'm new to the site and I was recently diagnosed by my doctor as having a bad case of speedster fever. I just picked up an unfinished 1957 wide body speedster as my latest project and the wife warned me that if I got it I would end in divorce court. I'm still waiting to be served with the papers and in the mean time I'm salivating at how I can fix up the speedster up. My buddy races mazda miatas and believes a miata motor will be just what the doctor ordered for some high revving good times with the speedster.

I do get off on a high revving race car sound/handling the miata engine could deliver. I ordered an engine adapter from Kennedy engineering to mate the motor to the transaxel.

My plans for my car since it already has a faded coat of paint from sitting waiting on its past owner to put it together is to leave it as is, and some race stickers and a number on the door and make it look like an old style race car until I can decide what color/interior to go with. My reasoning for wanting to use the miata motor is the racy sound and reliability of those motors as I plan it to be a daily driver to work. No sense having a garage queen I only touch/play with once a month for that I could remarry after this divorce goes through! Lol

My question for the forum members is has anyone used a miata motor or know of anyone that has and how it worked out? Thanks in advance.

Ernie Sanchez
Paso Robles, Ca
While several folks on this forum have installed rear mounted, water-cooled engines in their cars, a Miata engine has never been the choice thus far. I have always thought that engine physical size and shape were the key factors in the decision. These cars are very small and the space available for any engine is extremely limited, not to mention the space needed for cooling and muffling.

The best builders in the industry have struggled with the water-cooled alternative. This is not an endeavor to be undertaken lightly.
Hi Ernie,

If you have the donor engine already, or are getting it on the cheap, your project may make sense. There are sites devoted solely to Mazda engine conversions. However, these sites take the rotaries out and put something else in, they don't put a Mazda engine into another body.

Some engines are very popular for conversions, such as small block Chevies and Subi EJ series engines. The Subi is a good fit for Speedster replicas, due to the opposed 4 cylinder design, like the Vdub, which gives good balance and low center-of-gravity.

More power to you, whatever you decide. Just remember that the costs can be as much for the small bits and pieces as the big chunks. Lots of us on this site would like to follow your build. Best of luck!
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