they measure displacement differently. it has something to do with the combustion cycle and firing order. you can't really compare the two unless you take that into account.
Combustion Frequency and Power Stroke Duration
on a rotary, each rotor fires once per eccentric shaft revolution. In a piston engine, only half of the combustion chambers fire for a given revolution. This means that a 2-rotor engine fires as often as a 4-cylinder engine. However, the power stroke duration in a rotary is 50% longer, it being 3/4 of a main shaft revolution to the piston engine's 1/2. This makes a 2-rotor engine similar to a 6-cylinder.
__________________ kevin (superbacon mod) anally raped mattliston...twice....sideways....without lube causing him almost to bleed to death....while roger filmed and Dom masturbated to them all
reliability only pertains how well maintained the car is... what i would say is... oil changes and simple shit like that would be more of a hassle/ difficult cause its a one of a kind engine... most mechanics dont know what to do with a wankel motor and then on top there arent that many spare parts running for that motor, hence the reasoning to get a nickname deemed " unreliable"... thats what i would think.. ( good car and good motor, just not cost efficient to fix it/etc.
reliability only pertains how well maintained the car is... what i would say is... oil changes and simple shit like that would be more of a hassle/ difficult cause its a one of a kind engine... most mechanics dont know what to do with a wankel motor and then on top there arent that many spare parts running for that motor, hence the reasoning to get a nickname deemed " unreliable"... thats what i would think.. ( good car and good motor, just not cost efficient to fix it/etc.
not with rotaries. they are reliable when left stock unless it's a 13b-rew then it's just unreliable in general. they aren't made to make big power for long periods of time especially in the 13b's. porting them shortens their life severly. if you get an fc and maintain it etc it will last forever. when you wan300+whp no it won't hold up anywhere near as long. and with 400whp+ dream on
now with the 13b-rew they have a horrific cooling system etc. that air pump is also a pain in the ass when you want to make any significant power over stock. if you lightly mod it and maintain it yes it will last. but you must treat every rotary like a turbo car. warm it up before you drive it and cool it down before you turn it off. change the oil every 2500 miles and run the suggested fuel grades. and DO NOT LET IT EVER DETONATE OR OVERHEAT. Stock 13b's and 13bt's you can beat the piss out of them as long as you maintain them. but there are almost no reliable high hp rotaries running around with under 3 rotors.
the flaw is in their design, great race motors but horrible for economical daily drivers. and if you up the displacement and go with more rotors, then you'll be literally pissing gas down the drain to make more power reliably. about the only port job you can do on one that won't significantly hinder engine life is a milkd street port. when you start bridgeporting or p-porting them you'll be looking for a new motor 2-3 times a year
__________________ kevin (superbacon mod) anally raped mattliston...twice....sideways....without lube causing him almost to bleed to death....while roger filmed and Dom masturbated to them all
not with rotaries. they are reliable when left stock unless it's a 13b-rew then it's just unreliable in general. they aren't made to make big power for long periods of time especially in the 13b's. porting them shortens their life severly. if you get an fc and maintain it etc it will last forever. when you wan300+whp no it won't hold up anywhere near as long. and with 400whp+ dream on
now with the 13b-rew they have a horrific cooling system etc. that air pump is also a pain in the ass when you want to make any significant power over stock. if you lightly mod it and maintain it yes it will last. but you must treat every rotary like a turbo car. warm it up before you drive it and cool it down before you turn it off. change the oil every 2500 miles and run the suggested fuel grades. and DO NOT LET IT EVER DETONATE OR OVERHEAT. Stock 13b's and 13bt's you can beat the piss out of them as long as you maintain them. but there are almost no reliable high hp rotaries running around with under 3 rotors.
the flaw is in their design, great race motors but horrible for economical daily drivers. and if you up the displacement and go with more rotors, then you'll be literally pissing gas down the drain to make more power reliably. about the only port job you can do on one that won't significantly hinder engine life is a milkd street port. when you start bridgeporting or p-porting them you'll be looking for a new motor 2-3 times a year
i forgot to mention the bold parts in "stock".. thought it was a given...
P-porting doesn't reduce engine life. Just ask the guys who won the 24hrs of Lemans. I have a book that documents them taking that engine apart after the race for inspection and them finding virtually no wear.
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P-porting doesn't reduce engine life. Just ask the guys who won the 24hrs of Lemans. I have a book that documents them taking that engine apart after the race for inspection and them finding virtually no wear.
could've fooled me. i guess that's why rotaries come p-ported from the factory.
btw the lemans isn't a daily driven 1.3 liter. Porting
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yup. they need to all be 3 rotors but at that point i'd rather have a ls-x
__________________ kevin (superbacon mod) anally raped mattliston...twice....sideways....without lube causing him almost to bleed to death....while roger filmed and Dom masturbated to them all
no. that nell from bleach. i do have the valkaryie video game for ps2 though hehe
__________________ kevin (superbacon mod) anally raped mattliston...twice....sideways....without lube causing him almost to bleed to death....while roger filmed and Dom masturbated to them all
could've fooled me. i guess that's why rotaries come p-ported from the factory.
btw the lemans isn't a daily driven 1.3 liter. Porting
They don't come from the factory with a peripheral port. Look at your own link dude. All factory cars are side ported.
True the Lemans car isn't a dd, but a race enduro car. Rotaries are known for their durablility in racing. Just look at the history in IMSA during the 80's. They dominated until the rules where changed to make them uncompetitive. P-ports are stupid reliable man. Just are very hard to deal with for a dd. It has been done though.
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They don't come from the factory with a peripheral port. Look at your own link dude. All factory cars are side ported.
True the Lemans car isn't a dd, but a race enduro car. Rotaries are known for their durablility in racing. Just look at the history in IMSA during the 80's. They dominated until the rules where changed to make them uncompetitive. P-ports are stupid reliable man. Just are very hard to deal with for a dd. It has been done though.
i know they don't come from the factory dude. it's called sarcsm
and p-ports aren't reliable. you have to hit stratospheric rpms to even take advantage of them. you proved my point when you said they had to be ported into the block aftermarket style. for a daily driver they are horribly unreliable. and speaking of racing, do you know how many times they rebuild those motors? in comparison to todays motors they are horribly unreliable and ineffecient. driving a race spec motor for 24 hrs is different than putting 100K miles on your car where you don't replace major engine components every few weeks. seriously if you want reliability with a rotor you get a mild street port and leave it at that. anything else (bridge-port, large street port, p-port) all severly reduce reliablity. if it were that reliable it'd be the first thing they did to the motor when they bought it. hell it'd come like that from mazda but they don't. you comparing the lemans to a daily driver is like comparing nascar spec cars to daily drivers. why do you think mazda uses them in only one of their sports cars, and a turbo 4 cyls in all the others.
__________________ kevin (superbacon mod) anally raped mattliston...twice....sideways....without lube causing him almost to bleed to death....while roger filmed and Dom masturbated to them all
i know they don't come from the factory dude. it's called sarcsm
and p-ports aren't reliable. you have to hit stratospheric rpms to even take advantage of them. you proved my point when you said they had to be ported into the block aftermarket style. for a daily driver they are horribly unreliable. and speaking of racing, do you know how many times they rebuild those motors? in comparison to todays motors they are horribly unreliable and ineffecient. driving a race spec motor for 24 hrs is different than putting 100K miles on your car where you don't replace major engine components every few weeks. seriously if you want reliability with a rotor you get a mild street port and leave it at that. anything else (bridge-port, large street port, p-port) all severly reduce reliablity. if it were that reliable it'd be the first thing they did to the motor when they bought it. hell it'd come like that from mazda but they don't. you comparing the lemans to a daily driver is like comparing nascar spec cars to daily drivers. why do you think mazda uses them in only one of their sports cars, and a turbo 4 cyls in all the others.
I feel like I'm talking to a wall. Your sarcasm sucks if you look at your own words a little better.
Now If you look at my post I've been talking about P-port only. I never mentioned any other ports or am talking about the their reliablity.
If the p-port is so unreliable...how do you explain Mazda dominating IMSA in the 80's? They even won this years 24hr @ Daytona in the Speedsource RX8. Thats a sideport.... I agree they are hard to street, but what race motor doesn't get rebuilt often piston or rotary.
The history is there man..... do some research.
Enough said.
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I feel like I'm talking to a wall. Your sarcasm sucks if you look at your own words a little better.
Now If you look at my post I've been talking about P-port only. I never mentioned any other ports or am talking about the their reliablity.
If the p-port is so unreliable...how do you explain Mazda dominating IMSA in the 80's? They even won this years 24hr @ Daytona in the Speedsource RX8. Thats a sideport.... I agree they are hard to street, but what race motor doesn't get rebuilt often piston or rotary.
The history is there man..... do some research.
Enough said.
no my sarcasm was based on the fact that you said they didn't affect reliability.
and you don't understand what reliability is. you're talking about 1 race, i'm talking about for a personally owned car. that's like saying toda killer cams don't affect reliability on a b-series vtec motor. there is a difference between lasting one race and lasting through the trials of a personally owned car. those race cars have their motors continuously rebuilt at scheduled intervals. they don't put 50K miles on a p-ported lemans car. they are race prepped motors. go take a stock 13b and p-port it and let me know how long it lasts in comparison to a non tampered with 13b or a lightly modded one.
p-port requires you to exceed 8K rpms to even begin to make power and often with a 15K rpm redline, you think that helps reliability? you obviously can't comprehend what you're talking about any time you brought piston race motors into this and how they need to be rebuilt. you're looking at a race spec rotary and trying to say that it ran fine for 24 hrs on it's p-ports must not hurt the motor. that's just stupid. they have race compound apex seals,rotors and bullshit like that. you can run jet fuel though most fully built motors of any kind and hit 12Krpms and be fine....for a short period of time. but lets see it last as somebody's daily driver. next you'll tell me that bridgeports don't hurt the motor either because you saw a car run fine with one for a day
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Thats a sideport...
. I agree they are hard to street, but what race motor doesn't get rebuilt often piston or rotary.
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