what's the diff btw rotary engine and normal engine?
10-10-2005, 02:04 PM
#31
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Originally Posted by tsisean
Funny that "imports over rateing HP" and "rotaries" came up in the same thread. Mazda Overrated the HP in the RX-8 BIG time and had to offer refunds to everyone that got them. LOL.
All I have to say about rotaries is this, how many V8, 4 cylinder Turbo swaps do you see in an RX-7. How many Rotary swaps do you see in... anything? Alot more of the first, a lot less of the second.
All I have to say about rotaries is this, how many V8, 4 cylinder Turbo swaps do you see in an RX-7. How many Rotary swaps do you see in... anything? Alot more of the first, a lot less of the second.
By the way, people swap rotaries into Datsun 510s, into old Triumphs, into kit cars, etc.
10-10-2005, 02:21 PM
#32
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Then consider this. The motor is inheritly flawed in it's design. It burns oil from the factory. They actually design this motor to burn oill. I find it hard to believe in a motor that is designed like that from the factory. Keep some spare Mobil1 one in the car. 
10-12-2005, 10:47 PM
#33
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Ok you don't make sense there... you say its flawed, then you say its because it burns oil, then you say its designed to burn oil... so if its designed to do something which you say is a design flaw, then how is it flawed?! You have no clue about how rotary engines work, or else you would understand how and why it burns oil. You need to put what you've learned on the internet aside and read some real factual information.
10-13-2005, 02:01 AM
#34
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Originally Posted by B6T
Ok you don't make sense there... you say its flawed, then you say its because it burns oil, then you say its designed to burn oil... so if its designed to do something which you say is a design flaw, then how is it flawed?! You have no clue about how rotary engines work, or else you would understand how and why it burns oil. You need to put what you've learned on the internet aside and read some real factual information.
I know why the motor burns oil, it's for the apex seals. I know how they work. It was a jab at the motor. If an internal combustion piston motor burned oil it would be considered a problem or ... follow me here on this... a flaw. I don't believe in that motor was my point of the post.
Good to see everyone is keeping a sence of humor around here. :thumbsup
Last edited by tsisean; 10-13-2005 at 02:05 AM.
10-13-2005, 03:25 PM
#36
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1.3 litre in the rotary world, 2.6 eveyrwhere else. I love rotaries but sometimes when i look at my neighbours FB broken all the time, i fell glad that i have a i6 with rod knock that still can drive. 
10-13-2005, 08:13 PM
#37
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Originally Posted by B6T
Hey look... I'm joking too... can you tell?!
:thumbsup
:thumbsup
LOL, JK. It's all good.
And yeh RX7s break too much for me... and I drive a DSM!!
10-13-2005, 08:34 PM
#38
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Originally Posted by CryoSLASH
1.3 litre in the rotary world, 2.6 eveyrwhere else. I love rotaries but sometimes when i look at my neighbours FB broken all the time, i fell glad that i have a i6 with rod knock that still can drive.
10-13-2005, 08:52 PM
#39
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That argument has been going on forever. Each rotor is 650cc, making the engine 1.3L total. Fill the chambers with water, each one will take 650cc's, some people argue it's 2.6L for some reason, there is a write up for both arguments somewhere.
10-13-2005, 11:50 PM
#40
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Originally Posted by B6T
If I was equally as ignorant as you, I would say the same about a domestic V8. Rotaries are an amazing engine, you would know this if you actually knew something about them and didn't base your opinion on what you hear on the internet.
Because of its long and irregularly shaped rectangular combustion chamber, it gets VERY poor burn and can’t run high compression ratios. This is the reason for its poor fuel economy, low efficiency relative to the piston engine and very high emissions (have you ever seen the cat on an RX7). Long term durability is an issue particularly regarding apex seal wear.
It is indeed a dead end.
10-13-2005, 11:57 PM
#42
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Originally Posted by B6T
That's not a fair comparison. It takes a more knowledge to make a rotary fast then it does to make a V8 or Turbo I4 fast, thats the reason why most people swap out their rotary. There aren't many people capable of building a crazy rotary engine, that's another reason.
10-14-2005, 09:53 AM
#43
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Originally Posted by cL0wn_p3n0r
No they do it because the rotary can't be built to be reliable at high power levels becasue it begins running into serious detonations issues and high cylinder pressures do wonders on its apex seals.
10-20-2005, 01:51 AM
#44
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Originally Posted by cL0wn_p3n0r
No they do it because the rotary can't be built to be reliable at high power levels becasue it begins running into serious detonations issues and high cylinder pressures do wonders on its apex seals.
Hahaha... ok if you say so... High cylinder pressures eh? You definatly know what you're talking about.
10-20-2005, 08:16 AM
#45
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Allright thought i might add something to this,
look at it this way, inside a combustion engine you have many parts moving up then down these create forces that go against eachother. This also creates strong vibrations. Now inside a Wankel engine is basically a huge cylinder with a triangle shaped piston that is spinning on an axis. This cancels out many of those strong vibrations and also prolongs the life of the engine. There are few parts that can go bad inside a wankel engine. The only problem i see is that to date only Mazda has been fully successsful further engeneering these engines and putting them into production cars. Another plus is that given the small physical size of these enginest they are able to be mounted in more remote locations providing better weight distribution in the rx-8's case a perfect 50/50
look at it this way, inside a combustion engine you have many parts moving up then down these create forces that go against eachother. This also creates strong vibrations. Now inside a Wankel engine is basically a huge cylinder with a triangle shaped piston that is spinning on an axis. This cancels out many of those strong vibrations and also prolongs the life of the engine. There are few parts that can go bad inside a wankel engine. The only problem i see is that to date only Mazda has been fully successsful further engeneering these engines and putting them into production cars. Another plus is that given the small physical size of these enginest they are able to be mounted in more remote locations providing better weight distribution in the rx-8's case a perfect 50/50