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Old 02-27-2001, 06:27 AM   #1
Gambit
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Post Whoa! Our boxer engines rock!

I was at the www.tdautoxplorer.com site to do some search on cars and did a few comparisons. They listed the Horizontally Opposed engine as an advantage over other types of engine configuration. hhahahaha.... We're number 1!
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Old 02-27-2001, 06:29 AM   #2
scoobiejosh
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2001 Dodge Pikumup
& 08 Triumph Speed Triple

Post

Im probibaly gonna be hated for this, but the rotary is still my favrite.

Josh"monkey"
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Old 02-27-2001, 06:37 AM   #3
ColinL
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Location: Wichita, KS and Whoring, OT
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'03 Evo, Rice White
'01 Erion CBR 929

Post

No low end torque, extremely hot exhaust, very fragile if fuel mixture is lean, consumes as much if not more gas than equivalent HP piston engine.

I definitely respect rotaries, but I don't know if I have a favorite. If I do, it has pistons.
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Old 02-27-2001, 06:50 AM   #4
scoobiejosh
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& 08 Triumph Speed Triple

Post

Rotary
1.3 liters (depending on how you look at it)
325-350 hp all motor
800 hp with a big honkin turbo

2.0 liters
400-425 hp all motor
over 1000 with a bigger honkin turbo

I agree no real low end but a 12,000 rpm redline takes care of that. Besides the new design will help with that quite a bit. If you tune it safely and dont forget to add fuel then you dont worry about havin it run lean. And you dont mind a 250 hp all motor in a 2300-2500 lbs car getting bad gas mileage if it dosent need high octane, hehe.

Josh
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Old 02-27-2001, 07:24 AM   #5
mrbell
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2000 Impreza 2.5RS
Blue Ridge Pearl

Post

I would have to say that rotaries are definitely more elegant...
but I like my flat 4... if just because its mine! =)
actually, I like them both because they both have their strong points and both unique...
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Old 02-27-2001, 07:29 AM   #6
Tkacik
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Location: Greensboro, Georgia
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'06 Titan Crew Cab
'08 Forester LL Bean

Post

I love rotary power, except for one thing. That horrible rotary sound (Too ear peircingly loud for me). Now for the Boxer engine. Mmmmmm the sweetest exhaust note you could ask for.
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Old 02-27-2001, 08:02 AM   #7
Gambit
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How do you get a 1.3l rotary engine to produce 250hp? Stock 2G RX-7 does about 130hp.
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Old 02-27-2001, 08:10 AM   #8
5 Door Man
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Gambit-Very simple. Get the 13B street ported and put on a nice exhaust. Maybe add an aftermarket stand alone engine management system, and you're easily looking at 250 HP. The rotary is a crazy little engine. This months issue of Turbo Magazine has a 532 HP rotary powered Miata in it. Electromotive Tec-II, decent sized turbo, exhaust, not much more.
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Old 02-27-2001, 08:13 AM   #9
scoobiejosh
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& 08 Triumph Speed Triple

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Gambit: the last half of the 2nd gen pit out 160 h.p. all motor, 200 with a turbo. It is pretty easy to get 200 h.p. all motor with simple bolt ons. the header back exhaust its self is worth areund 20 h.p. (headers, removing or high flow cats, cat back) on a N/A 2nd gen Rx-7. With an old style 13b street ported, and a good carb set up at least 250 h.p. is easily atainable. If you bridge port it, you looking at about 300 h.p. This is all with a good induction system, properly tuned.

Josh

P.S. I love the raunchy, backfireing, sputtering, crazy sound of a bridgeported rotary. But then again im crazy. I drove one of my Rx-7s with out a muffler for 4 months, and loved it, hehe.

[This message has been edited by scoobiejosh (edited February 27, 2001).]
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Old 02-27-2001, 08:15 AM   #10
cj917
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Wink

"1.3 liters (depending on how you look at it)
"


yeah, the problem is that it's more like 2.6 liter...
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Old 02-27-2001, 08:35 AM   #11
scoobiejosh
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& 08 Triumph Speed Triple

Post

The combustion area is only 1.3 liters, although there are 6 diffrent "chambers" that rotate to the combustion location. Considering the motor is the size of a beer keg, and very light i think it is fair to say it is 1.3 liters, since the area that is combusted is only 1.3 liters. Its just much more efficient because it uses all the energy from all the combustion "chambers in one "crank" shaft rotation, instead of something like 1/2 like a piston motor.

BTW - the Boxer is my favrite design of piston motor......well that and straight 6 turbos.
mmmmmmm........torque

Josh

[This message has been edited by scoobiejosh (edited February 27, 2001).]
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Old 02-27-2001, 08:49 AM   #12
plaRp
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Post

i don't have the url anymore but some guy transplanted a 2nd gen rx7 engine into a sooby.. was able to keep the awd and everything.. mad crazy..
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Old 02-27-2001, 09:16 AM   #13
Nat
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Old 02-27-2001, 10:45 AM   #14
SubieFL
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Silver

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I love my boxer engine. I love rotaries. I love inline-six turbos. I know one dude that has an RX-7 wth 1.2L 12A engine and no turbo or NOS and does regular 11s in the quarter mile. ........and another guy that has a 400 HP 1.3L with no turbo.
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Old 02-27-2001, 11:01 AM   #15
scoobiejosh
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2001 Dodge Pikumup
& 08 Triumph Speed Triple

Post

SubieFL, you live in Florida, sounds like you have some friends from PR, i like those guys a lot. The piston vs. rotary feud is awsome. They are insane. They can make 4 cylinders and rotarys flat out haul a$$.

Josh
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Old 02-27-2001, 01:47 PM   #16
Tkacik
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'06 Titan Crew Cab
'08 Forester LL Bean

Post

Hey SubieFL were these guys ever on the Fast Fours and Rotaries video series?
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Old 02-27-2001, 02:35 PM   #17
ejicon
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WRB Mica

Thumbs up

Thanks for the info
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Old 02-27-2001, 02:39 PM   #18
jetfreak
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Turbine power is my choice! Lightweight and powerful. But when I'm on the ground you can't beat the performance of a Wankel. More engineering and development are required to make it more efficient. They suck gas like a turbine. Mazda is still the king of the hill in the rotary game and they're still improving it.(See the new RX-8?)
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Old 02-27-2001, 06:09 PM   #19
Silent Ben
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1999 Impreza 2.5RS

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You're forgeting the new Renesis engine, the replacement for the 13B. The one in the RX-evolv prototype put out 280 HP N/A, and the version Mazda is putting in the RX-8 puts out 250, still N/A. Just think if they did turbo it.

Ben
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Old 02-27-2001, 11:17 PM   #20
kgb
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2000 RS-T -> RSTi-8
Blue Ridge Pearl

Lightbulb

Boxer, I-6 and V engines with more than 8 cylinders are known to be well balanced. Rotary though is more efficient (but with the Mazda implementation it drinks gas). Personally, I like Rotary and were it not for mileage I would have got an FC (2nd gen RX7) instead of an '86 prelude as my previous car.

Never thought about the displacement on Rotary - all I knew is that it's 1.3L. I wonder if it's calculated the same way like reciprocal engines, but I heard you can't compare HP/liter the same way. V10 F1 engines are nice too (very short strokes)
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Old 02-28-2001, 12:11 AM   #21
XT6Wagon
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The "1.3L" rotory is more equivlent to 2.6L of a Otto cycle engine. This is because the Rotory uses all 1.3L per rotation, while it takes a Otto cycle 2 revolutions to use all of its displacement.
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Old 02-28-2001, 12:23 AM   #22
Adrian128
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Location: Sydney,Australia
Post

I love boxer engines, and I love rotary engines as well.. I love the power, the acceleration, of a rotary, but I don't like it's lack of reliability. I have friends who have 400 - 500 hp 13B turbos.. and they are great, but they're always being worked on etc. I can't afford that.. Maybe after a few years I'll buy a 70s RX3 Savanna and put a 13B turbo, maybe a 20B. That should be a fun 2nd car.
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Old 02-28-2001, 06:24 AM   #23
Gambit
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Post

Maybe I should change the title to Boxer Engine rocks, But Rotary engine kicks arse...
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