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-   -   An interesting engine swap. (https://www.miataturbo.net/media-53/interesting-engine-swap-72964/)

Joe Perez 05-25-2013 04:28 AM

An interesting engine swap.
 

tasty danish 05-25-2013 06:01 AM

Is that an APU I hear whining prior to start? Shiz be knutz

Reverant 05-25-2013 06:55 AM

I don't see how else you can possibly crank that thing without an APU.

Amellrotts 05-25-2013 08:38 AM

Loved the sound of round......I noticed the car never even wiggled so a clear photoshop fabrication, but great video non the less. Thanks Joe!

97montego 05-25-2013 10:44 AM


Originally Posted by tasty danish (Post 1015204)
Is that an APU I hear whining prior to start? Shiz be knutz

It's an inertia starter, an electric motor turns a flywheel and you engage a clutch to spin the radial.

Joe Perez 05-25-2013 01:11 PM


Originally Posted by Amellrotts (Post 1015215)
I noticed the car never even wiggled so a clear photoshop fabrication,

??

Look at the reflection in the right-rear quarter window starting at :08 when they begin cranking. That car is definitely "wiggling".

supercooper 05-25-2013 01:14 PM

well... on a lighter, less-well thought out note... At least this guy SUCCESSFULLY did a stupid swap, unlike alot of the claims in the intro posts....

Joe Perez 05-25-2013 01:30 PM

To be fair, I have utterly no idea whether the car is actually driveable, or if this was just a stunt. The crankshaft of the rotary radial engine is definitely at a higher plane than the stock crank and input shaft to the transmission, so you'd have to fabricate some sort of belt or chain drive to transfer the power to a lower intermediate shaft, and then a clutch assembly to couple it to the transmission.

Looks cool as hell though.

Irony:

Notice the license plate? It's a California car. And since that's an early 60s vintage Bug, this engine swap is CARB legal (unlike, say, putting a turbo onto a clean-running '00-'05 Miata.)

tasty danish 05-25-2013 02:54 PM


Originally Posted by Joe Perez (Post 1015257)
The crankshaft of the RADIAL engine is definitely at a higher plane than the stock crank and input shaft to the transmission

FTFY. No doritos in this thread.

I did a little E-stalking, looks like this is a salt flat car.

Joe Perez 05-25-2013 03:03 PM


Originally Posted by tasty danish (Post 1015282)
FTFY. No doritos in this thread.

(facepalm)

Yes, I do actually understand the difference between a radial and a rotary ((not a wankel, an actual aircraft rotary), I just have the dumb this morning.

Full_Tilt_Boogie 05-25-2013 03:16 PM

Win.

tasty danish 05-25-2013 04:29 PM


Originally Posted by Joe Perez (Post 1015285)
(facepalm)

Yes, I do actually understand the difference between a radial and a rotary ((not a wankel, an actual aircraft rotary), I just have the dumb this morning.

I can't imagine what a rotary A/C engine would be like to operate. You think BP's vibrate terrible...

Joe Perez 05-25-2013 04:48 PM


Originally Posted by tasty danish (Post 1015307)
I can't imagine what a rotary A/C engine would be like to operate. You think BP's vibrate terrible...

They're supposedly quite well-balanced and run very smoothly. Consider that in a rotary design, the crankcase, cylinders and heads all collectively act as a gigantic flywheel.

On the downside, power is limited by the amount of air which can be sucked in through a hollowed-out crankshaft, and they are lubricated in a total-loss system, somewhat like a two-cycle engine. Pressurized oil is supplied to the bearings by a pump, but it is never recovered and instead goes out of the engine through the cylinders.

Leafy 05-31-2013 01:28 PM


Originally Posted by Joe Perez (Post 1015311)
They're supposedly quite well-balanced and run very smoothly. Consider that in a rotary design, the crankcase, cylinders and heads all collectively act as a gigantic flywheel.

On the downside, power is limited by the amount of air which can be sucked in through a hollowed-out crankshaft, and they are lubricated in a total-loss system, somewhat like a two-cycle engine. Pressurized oil is supplied to the bearings by a pump, but it is never recovered and instead goes out of the engine through the cylinders.

And how exactly do you connect a rotating engine block to a transmission? :giggle:

Joe Perez 05-31-2013 01:31 PM


Originally Posted by Leafy (Post 1016994)
And how exactly do you connect a rotating engine block to a transmission? :giggle:

Very carefully.


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