Re: [BaadAssGremlins] Re: Pacer motor mounts oddities
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Re: [BaadAssGremlins] Re: Pacer motor mounts oddities





A friend of mine had a little Mazda RX2 rotary sedan back in the mid 1970s. 
http://en.wikipedia.org/wiki/File:Mazda_Capella_001.JPG
Back then, the ONLY reason people bought a foreign car was to get good gas mileage. His Mazda combined all the comfort and reliability of a Fiat 124 with the gas mileage of a Buick Electra.

Onree in Nebraska


On Mar 11, 2011, at 10:18 AM, LarryS wrote:


They seemed to stop putting out rotaries for a while.
At least they didn't import any.
 
But this new Renesis model has a nicely refined rotary.  Gets the power and the mileage they always said the rotary would get.  It's got EFI (the 70s mazdas were carburated). and some special internal porting... what might be equivalent to 'high performance heads' on a regular engine. 
 
The 'no back wheels' is notta big trick.  Just an equalizer hitch.  Well... an EQ hitch on steriods ;-) -- really big spring bars.  Just turns the frame of the car and frame of the trailer into a continuous truss.
 
 


From: BaadAssGremlins@xxxxxxxxxxxxxxx [mailto:BaadAssGremlins@xxxxxxxxxxxxxxx] On Behalf Of Eddie Stakes
Sent: Friday, March 11, 2011 8:55 AM
To: BaadAssGremlins@xxxxxxxxxxxxxxx
Cc: amc-list@xxxxxxxxxxxx
Subject: [BaadAssGremlins] Re: Pacer motor mounts oddities

Aren't Mazdas still using rotary engines to this day? Speaking ot Olds Toronado there was a great photo of Croft Trailers framed on the wall down on Navigation years ago. There was a Toronado.....NO BACK WHEELS, hooked up to trailer and it toured the country this way the trailer held up rest of car I guess, too much physics for me. I used to rent trailers there for swap meets and was always facinated by that photo.
----- Original Message -----
From: LarryS

Couple o' things.
The wankel rotary isn't a 2 cycle OR a 4 cycle, they are Wankel cycle.
 
(In fairness, I tend to think of it as 2 stroke, but that's not accurate ;-)
 
Mazda used the rotary in a full lineup of cars including the RX-7 and their various boxy japanese sedans.  After the various apex seal problems, all the sedans dropped the rotary for the mazda 4 cylinder with the RX-7 being the lone rotary in production at all for a while.
 
2 stack rotaries are commonplace.  Even singlestack rotaries are used, but not in cars -- you're talking all of 75 hp or so
 
3 stack are common, racing and road cars, but not domestically.  They are usually ordered in from Australia or somewhere.  Can't make EPA, you know ;-)
 
4 stack are, to my knowledge, not used anywhere except experimentally on stationary applications like their "spark assisted diesel" project for electrical generation.  Yup... a wankel running diesel fuel... except "spark assisted" -- talk about marketing spin.
 
The 4 stack has a lot of the same kind of crank probs a straight 8 can have.  Too much load over too long a shaft, basically.
 
Among the many reasons the rotary didn't take off were those crummy apex seals -- ironically, now that there's so few of them, they've come out with good seals and the problem is gone.
 
Also, they never did get good mileage.  Ever.  That's why I think of them as a 2 stroke engine -- they chugalug the fuel.
 
The new Mazda Renesis (?) is a production rotary.... 3 or 4 years now?   And no, you don't see  many of them.
 
Just in case anyone was gonna lose any sleep over a stupid little japanese engine.
 
Oh... and if you run one without a muffler, it makes absolutely the nastiest, loudest, and most-annoying sound I have EVER heard from an engine.  Talk about something that would invoke road-rage... that'd be it.
 
 
L.
 
 


From: BaadAssGremlins@xxxxxxxxxxxxxxx [mailto:BaadAssGremlins@xxxxxxxxxxxxxxx] On Behalf Of Terry Atkins
Sent: Thursday, March 10, 2011 8:31 PM
To: BaadAssGremlins@xxxxxxxxxxxxxxx
Subject: Re: [BaadAssGremlins] Re: Pacer motor mounts oddities

Your exactly right that is why they ended up with the 258 and later v8's. I am sure they were going to be 2 bangers with two of those triangle things in them. They say you can get them with 3 or 4 but they are used mostly for racing because they are so expensive. The Mazda xr7 was the only car I knew of that used them in mass production. While they are an old design I remember when they first were promoted in the 70's they were suppose to be what all cars would have in them in a few short years. They died. I can also remember when the Corvair came out and the VW was in its heyday that a lot of people were saying all cars would be rear engine cars shortly. It died too. I can also remember in 68 when Olds brought out a front wheel drive car that they said it would take over. Well it did but not like the Tornado . They had straight engines with a belt going to the transaxel. Not like the sideway engines we have today.
 
Terry






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