how do u install a rotary engine in a 1991 Mazda Miata
65

Asked by Dec 05, 2014 at 10:33 PM about the 1991 Mazda MX-5 Miata Base

Question type: Car Customization

i have a 1991 Mazda Miata and i was wondering how to install a rotary engine in 1 of
these right now its just pushing a stock 1.8L engine

10 Answers
24,425

answered 2 years ago

I would try miata.net or clubroadster to see if there are any write ups on a rotary swap.

1 out of 1 people think this is helpful.
1,535

answered 2 years ago

I'm sure it can be done, see if the motor mounts are the same & line up in the same location first, a slight mod (welding) might be needed & see if the trans bolt pattern are the same to the rotary engine. Former Mazda RX3 & Rotary truck owner. I saw a cool V8 swap on TV into a Miata. A company provides a wide body fender kit & use a rear end out of a late model T-bird. Also a mid-engine rotor motor to a VW trans axial in a sand rail. It tore-up everything on the beach & dunes in Mexico. Mechanics Tech school specialize in rotaries, also in Puerto Rico they love rotaries too, (see youtube).Mechanics Tech in Orlando built a turbo 3 rotor trike motorcycle! But no one had balls enough to ride it.

1 out of 1 people think this is helpful.
1,535

answered 2 years ago

See Stacy Gearz TV show of how to transform your Miata into a Banshie.

65

answered 2 years ago

ok thx

25,595

answered 2 years ago

A rotary engine in an MX-5, huh? That should prove interesting. Let us know how that works out for you.

24,425

answered 2 years ago

It actually works well racerx, smaller motor than stock, the rotary can make lot of hp if boosted, installed in a sub 2200 lb car = fun. Downside of the rotary is the apex seals start to go bad around 50k miles and require a rebuild of the motor.

1 out of 1 people think this is helpful.
1,535

answered 2 years ago

I know, I had a 70 cu, in. & a 80 cu. in rotary cars. A moly additive for the seals helps.

answered 2 years ago

I'm sorry, but I beg to differ.... "Molly additives" will not do anything for rotary engines because they use oil, period. When a rotary engine breaks an apex seal, an oil seal or a water seal it causes mayhem in the internals of that engine. "Molly additives" are simply "snake oil" for rotary engines. Do yourself a favor, unless you have plenty of money and time to spend, make sure to do your own research... It will cost you thousands!!!

1,535

answered 2 years ago

I beg to differ, I used a moly additive in a 70" 1973 RX-2 Mazda. My car was faster than the Mazda dealerships race car! And I used a moly additive in a 80" rotary truck too. The early rotarys used scaper seals on the rotar apexes, the later rotarys used roller seals on the apexes. Both benefited from a slippery moly additive. Disassembly after a cross country trip proved it. Sorry, proof is in the pudding.

1,535

answered 2 years ago

1 pint of suspended pure molyibdium is what I used.

1 out of 1 people think this is helpful.

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