• We should now be fully online following an overnight outage. Apologies for any inconvenience, we do not expect there to be any further issues.

no more rotary engines from Mazda

Mar 10, 2005
14,647
2
0
i doubt the wankel's limitations will ever be overcome. maybe in specialized situations, but not widespread use in cars.
 

Doppel

Lifer
Feb 5, 2011
13,306
3
0
These engines are complete trash, which is why nobody else uses them. Mazda only does because of hardcore followers and/or marketing reasons (e.g. look we won le mans, or look this is the only way you can get a rotary!). Guzzle oil, guzzle gas, have no power, aren't reliable.
 
Mar 10, 2005
14,647
2
0
These engines are complete trash, which is why nobody else uses them. Mazda only does because of hardcore followers and/or marketing reasons (e.g. look we won le mans, or look this is the only way you can get a rotary!). Guzzle oil, guzzle gas, have no power, aren't reliable.

the power/weight and power/size are the only things wankels currently have going for them.
 

Knavish

Senior member
May 17, 2002
910
3
81
It's funny ... i see comments under some of the linked articles that say, "put the wankel engine in the MS3" ... I always thought it would be cool to put the turbo 4 from the MS3 into the RX8 & sell it for a few thousand less.
 

punjabiplaya

Diamond Member
Nov 12, 2006
3,495
1
71
It's funny ... i see comments under some of the linked articles that say, "put the wankel engine in the MS3" ... I always thought it would be cool to put the turbo 4 from the MS3 into the RX8 & sell it for a few thousand less.

yeah, I thought about that too. I love running down rx8s. They never want to race though. :(
 

Alienwho

Diamond Member
Apr 22, 2001
6,766
0
76
RX8 would have been at the top of my list if it had a turbo 4 or a V6 like from the 2011+ mustang. I love the suicide doors and wish more 2 door coupe's had that.
 

Doppel

Lifer
Feb 5, 2011
13,306
3
0
RX8 would have been at the top of my list if it had a turbo 4 or a V6 like from the 2011+ mustang. I love the suicide doors and wish more 2 door coupe's had that.
Yep, the suicide doors on it are very nice.
 

Zivic

Diamond Member
Nov 25, 2002
3,505
38
91
These engines are complete trash, which is why nobody else uses them. Mazda only does because of hardcore followers and/or marketing reasons (e.g. look we won le mans, or look this is the only way you can get a rotary!). Guzzle oil, guzzle gas, have no power, aren't reliable.

they use oil by design, so is that a fault? I guess it can be an inconvience. Funny watching rotary guys doing the calculation at the gas station for their premix.

They aren't all that efficient, but I have 4 banger than pulls a cool 11mpg so I think we are in the same ballpark

No power? My mechanic's kid makes over 500 whp with his FC. that was enough for him to run a 10.78 in a street car with a set of slicks

Now, I'll give you they aren't relatively reliable. But if you know what you are doing they are beyond simple to fix. I have been witness to a single person taking a non running rotory, pull the motor, rebuild and reinstall and get to a running car in a single night. sure, they might only go 80k miles and need a rebuild, but who really cares when parts will be about a grand and you can do the whole thing in 6-7 hrs?
 

theeedude

Lifer
Feb 5, 2006
35,787
6,197
126
Good riddence. If they released RX-8 type car with Mazdaspeed 3's engine, I would be driving it now.
 

manimal

Lifer
Mar 30, 2007
13,559
8
0
I will always have a sweet spot for RX7s. The oil consumption stigma gave it the same PR weight of a diesel. For their displacement they are amazing engines that are amazingly simple and have fewer parts than a similar displacement 4 stroke.


Dollar for dollar the RX line has given great performance at a reasonable price. It is sad when a innovation tree dies with no replacement.
 

ichy

Diamond Member
Oct 5, 2006
6,940
8
81
RX8 would have been at the top of my list if it had a turbo 4 or a V6 like from the 2011+ mustang. I love the suicide doors and wish more 2 door coupe's had that.

The RX-8 has a 1.3L engine. There's no way you could fit a turbo 4 or a V6 in there. The one real benefit of rotary engines was their great power to displacement ratio.
 

Fenixgoon

Lifer
Jun 30, 2003
33,306
12,875
136
The RX-8 has a 1.3L engine. There's no way you could fit a turbo 4 or a V6 in there. The one real benefit of rotary engines was their great power to displacement ratio.

1.3L = engine displacement != physical size.

a 6.0L LS2 is physically smaller than many I4's.
 

Arkaign

Lifer
Oct 27, 2006
20,736
1,379
126
The RX-8 has a 1.3L engine. There's no way you could fit a turbo 4 or a V6 in there. The one real benefit of rotary engines was their great power to displacement ratio.

Dude the 1.3L Mazda Renesis Rotary is about the same size and weight as a freaking LS V8 from GM. It's NOT a small motor in anything other than the internal displacement rating.

People even put the 2JZ-GTE in there, which is also a pretty damn large/heavy motor setup, larger even than the GM V8s.

Anyway, here's an RX8 with a GTO's LS motor swap.

http://www.chromjuwelen.com/de/network/237/54042-mazda-rx-8-with-ls1-power.html

The Rotary had barely the power of a decent 4-banger, terrible torque, terrible fuel economy, terrible reliability, and wasn't particularly small. It's interesting, but not particularly smart as a motor choice.
 
Feb 10, 2000
30,029
67
91
I have always been intrigued by rotary technology - intuitively it "feels" like it should be a step forward from piston-based engines. Unfortunately in practice it seems to offer almost no real-world benefit, much less one that would offset its awful fuel efficiency and reliability, nor its oil usage. Thanks but no thanks.
 

ichy

Diamond Member
Oct 5, 2006
6,940
8
81
Dude the 1.3L Mazda Renesis Rotary is about the same size and weight as a freaking LS V8 from GM. It's NOT a small motor in anything other than the internal displacement rating.

People even put the 2JZ-GTE in there, which is also a pretty damn large/heavy motor setup, larger even than the GM V8s.

Thanks for enlightening me. A few months back I made a comment to someone that they ought to just put the MazdaSpeed3 engine in an RX-8 since it has a reputation for great handling. I was told that part of the reason they went for a rotary was because of the size, but it looks like that was incorrect.