Wrighty
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Registered: 28th Feb 04
Location: Howden
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still boggles my mind how these work  but soo impressive
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
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Does this help?
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LeeM
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Registered: 26th Sep 05
Location: Liverpool
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quote:
Originally posted by CorsAsh
Does this help?
not in the slightest
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jr
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Registered: 20th May 02
Location: Kent
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imagine how much it will be if it goes wrong though 
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
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Think how much it took to make the normal piston engine reliable, and how much less development the rotary has had, so it will only get more and more reliable.
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Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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sod reliability, they need to make it sound nice first imo.
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jr
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Registered: 20th May 02
Location: Kent
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quote:
Originally posted by CorsAsh
Think how much it took to make the normal piston engine reliable, and how much less development the rotary has had, so it will only get more and more reliable.
very true mate
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Sunz
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Registered: 12th Jan 07
Location: SE England
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quote:
Originally posted by CorsAsh
Does this help?
Do they have low torque because of the way this piston transfers its power to the crankshaft ?
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corsagsigav
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Registered: 28th Jan 08
Location: Retford, Nottinghamshire
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rx7 + 1jz=reliable rx7/ love the looks just the engine wud worry the hell out of me
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Kerry
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Registered: 5th Oct 01
Location: Norwich
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quote:
Originally posted by CorsAsh
equivalent 3.2l capacity as opposed to the 2.6l
[Edited on 12-03-2009 by CorsAsh]
What are the rules with wankel engines and when the owners can refer to them as a 1.3 or a 2.6?
is it whenever it suits them 
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ed
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Registered: 10th Sep 03
User status: Offline
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I think you refer to it as a 1.3 whenever you are showing off how powerful your engine is, buying a tax disk or getting an insurance quote. You refer to it as a 2.6 when you want to show people that you're knowledgable about them on internet forums.
 xx
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Nismo
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Registered: 12th Sep 02
User status: Offline
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quote:
Originally posted by corsagsigav
rx7 + 1jz=reliable rx7/ love the looks just the engine wud worry the hell out of me
utter tripe.
My RX7 done 80k odd before it died. Scoobs / Evos / Supras all last as long if not shorter.
And a stock rebuild on an RX7 is cheaper.
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Daimo B
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Registered: 20th Mar 00
User status: Offline
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quote:
Originally posted by CORSA NUT
Novelty IMO.
Don't like them a and never have! The RX8 is like a hairdrier that uses shit loads of fuel and oil and isn't even fast.the RX7 is better but still like driving a timebomb that uses shit loads of fuel and oil
Actually the Rotary engine is one of the finest in the world. It is far superior to a normal piston engine due to the less volume of moving parts.
Theres a lot of reasons why the rotary is so good, and why Mazda continue to use it. Im sure ashdrops can point you in the direction of some interesting links.
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Daimo B
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Registered: 20th Mar 00
User status: Offline
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quote:
Originally posted by Nismo
quote:
Originally posted by corsagsigav
rx7 + 1jz=reliable rx7/ love the looks just the engine wud worry the hell out of me
utter tripe.
My RX7 done 80k odd before it died. Scoobs / Evos / Supras all last as long if not shorter.
And a stock rebuild on an RX7 is cheaper.
Yeah but the 80k Supras usually are not exatly standard are they. I know of a few into the hundreds now.
I thought the life expectancy of a RX7 rotary was around 70k before rebuild, some last a lot longer, some last less. But thats with older technology. Im sure the modern RX8 will go on a LOT longer.
Isn't the current RX8 a 2.6? The RX7 was a 1.3 (twin 654cc rotars I think).
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sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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its very strange how they don't seize up as the "bores" aren't oil'd.
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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quote:
Originally posted by Wrighty
still boggles my mind how these work but soo impressive
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scoob
Premium Member
Registered: 16th Oct 03
Location: Beverley, E Riding of Yorkshire
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my rx7 was more reliable then my wrx was the only time it was off the road was when it was having upgrades
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Daimo B
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Registered: 20th Mar 00
User status: Offline
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To put into perspective for those learning..
Piston engine
Piston - Rod - Crank.... Now include all the bolts and such... The amount of moving parts in a piston engine is massive.
Now look at the rotary. How many moving parts can you see in the above image?
Turbo's are much more "prone" to going pop than a NA engine, down to the amount of more moving parts.
Likewise, a rotary has far less moving parts than a NA piston engine.
Less moving parts = less to go wrong.
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ed
Member
Registered: 10th Sep 03
User status: Offline
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But the modes of failure are much more well known on a piston engine as everyone who's everyone is making them and researching how to make them better. Perhaps if more people worked on rotars then they would be a lot better.
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CorsAsh
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Registered: 19th Apr 02
Location: Munich
User status: Offline
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quote:
Originally posted by Sunz
quote:
Originally posted by CorsAsh
Does this help?
Do they have low torque because of the way this piston transfers its power to the crankshaft ?
It's part of it, the way the rotor moves means the force it exerts on the shaft is similar to a piston engine with short rods. The 16X has a new shaped housing with longer "stroke", which will lead to better torque figures. Having said that, mine's a shade under 300lb/ft at 3500rpm IIRC, so they're not so low. There's just more of a gap between the peak BHP and torque figures.
quote:
Originally posted by Kerry
quote:
Originally posted by CorsAsh
equivalent 3.2l capacity as opposed to the 2.6l
What are the rules with wankel engines and when the owners can refer to them as a 1.3 or a 2.6?
is it whenever it suits them
quote:
Originally posted by ed
I think you refer to it as a 1.3 whenever you are showing off how powerful your engine is, buying a tax disk or getting an insurance quote. You refer to it as a 2.6 when you want to show people that you're knowledgable about them on internet forums.
xx
They were all classed as a 1.3 when first built. I still believe that they are a 1.3, it's just that insurance companies and the DVLA prefer to get more money by saying they're a 2.6 and making up some rubbish about swept faces.
Any that were registered as 1.3 before the DVLA decided to change its stance remain as such until the V5 is amended, say a respray or something, when it will usually come back with 2.6. Any new cars, i.e. RX8s, are registered 2.6 from the get-go, despite still using 13B engines,
quote:
Originally posted by sand-eel
its very strange how they don't seize up as the "bores" aren't oil'd.
That's because the engines have oil metering pumps, with injectors mounted inside the rotors, these spray oil onto the chamber walls to keep them lubricated. It's also why they burn more oil than a piston engine.
Some people prefer to remove this system and "premix" instead, where you remove the OMP, and treat the engine the same way you'd treat a 2-stroke, by adding oil hen you fill the car up.
quote:
Originally posted by ed
But the modes of failure are much more well known on a piston engine as everyone who's everyone is making them and researching how to make them better. Perhaps if more people worked on rotars then they would be a lot better.
Exactly, see my comment earlier to jr.  The thing with rotaries is there are only three vital moving components, so when something goes wrong with one of these, it's usually catastrophic.
[Edited on 13-03-2009 by CorsAsh]
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Nick-S
Member
Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline
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quote:
Originally posted by CorsAsh
Nope.
edit: were you being amusing?
[Edited on 12-03-2009 by CorsAsh]
yes, as in they use alot of oil
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Nick-S
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Registered: 3rd Mar 04
Location: Leigh. Drives: RS Megane 230 F1 Team R26
User status: Offline
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quote:
Originally posted by Adam_B
sod reliability, they need to make it sound nice first imo.
in mazda deffence, 3 rotor engines sound ok........
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flybikeslee
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Registered: 2nd Jan 07
Location: Liverpool
User status: Offline
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9000rpm i likkkke
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davcohen
Member
Registered: 1st Nov 03
Location: North London
User status: Offline
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wonder if it will sound any better then the hairdrier it replaces the rx8
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CorsAsh
Member
Registered: 19th Apr 02
Location: Munich
User status: Offline
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Will sound similar I imagine, just slowed down due to the stroke. So instead of brapbrapbrapbrap it'll be brap brap brap brap.
Might not rev as highly either, I don't know
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