Jump to content
SAU Community

The Sa Wasteland

heslo

By heslo,
in South Australia

 Share

Recommended Posts

D_Stirls Veteran

D_Stirls

Posted
Posted

that was a theoretical statment, they may be. Personally i don't like the sound of rebuilding and engine <100,000km's so i'll never play with them. But i shouldn't actually say never becasue the do make huge power considering their displacement.

Link to comment
Share on other sites
  • Replies 14.2k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

Posted Images

scandyflick Grand Master

scandyflick

Posted
Posted (edited)
Tell her that it is a 2 storke engine (Even though it doesn't have any strokes), so in effect it'll use twice the fuel that a regular 1.3 litre 4 stroke engine does. It's also why they are rated at 2.6 litres when compaired to piston egines and why they make so much power from 1.3 litres.

told her that. she looked at me like id just asked her the square root of 16 billion.

that was a theoretical statment, they may be. Personally i don't like the sound of rebuilding and engine <100,000km's so i'll never play with them. But i shouldn't actually say never becasue the do make huge power considering their displacement.

theyre pretty average on fuel. lowest ive seen the consumption for one in town/suburbia (where she and most people will use it) was about 10l/100km, highest was in the 20's...

as for the rebuilding engines every 100,000km, very true for the older design engines (fd and older), more so when theyre boosted and modded, but not so true for the new peripheral port engines they use in the rx8, service life is a lot more generous.

... but its also a lot less exciting.

Edited by scandyflick
Link to comment
Share on other sites
D_Stirls Veteran

D_Stirls

Posted
Posted (edited)

"lol"

:lol:

:D

:O

I thought that you couldn't type in the emoticoms but it must just be that there isn't one for :lol:

Oh it's 126491.10640673517327995574177731 by the way but i did use a calculator. :P

Edited by D_Stirls
Link to comment
Share on other sites
TALBO Grand Master

TALBO

Posted
Posted
Tell her that it is a 2 storke engine (Even though it doesn't have any strokes), so in effect it'll use twice the fuel that a regular 1.3 litre 4 stroke engine does. It's also why they are rated at 2.6 litres when compaired to piston egines and why they make so much power from 1.3 litres.

I would've thought closer to 3.9L

http://www.skylinesaustralia.com/forums/Ro...ck-t287781.html

Knock yourself out on that thread... :D

Link to comment
Share on other sites
scandyflick Grand Master

scandyflick

Posted
Posted

its the same old thread as every other rotang thread.

"rotors suck, why?"

cue jokes about busted seals and the rspca.

argument about why everything else a superior engine and that rotors sound like bad gay sex.

finish with something about an ls1.

Link to comment
Share on other sites
D_Stirls Veteran

D_Stirls

Posted
Posted (edited)

i just saw the 3.9 litre bit but i think that is a crock, they only use 1 side of the rotor each power (Stroke) so they are only using the 1.3 litres. that's like saying that a 2 litre engine is really 4 litres because the pistons sweep 4 litres per full cycle.

Also that bit about gearing up the eccentric shaft 3 times to use regular gearboxes is also grasping at straws. They use a 3 times gear up because the rotor has 3 sides, so him saying that they could step it up to 6:1 then there would have to 6 sided rotor which would be huge.

Edited by D_Stirls
Link to comment
Share on other sites
scandyflick Grand Master

scandyflick

Posted
Posted

uuuugh.

itunes just decided to purge 80gb of music from my ipod.

now for the tedious task of reloading all that music from about 12,000 different sources (3 hd's, and a couple hundred cd's...)

Link to comment
Share on other sites
AndrewJZX100 Mentor

AndrewJZX100

Posted
Posted
235's all round could work. but im not lowering it more. low enough as it is. srs. exhaust scrapes and front wheels scrub as it is.

lulwat? What are the wheel and tyre specs on the one in the pic?

Tuck the exhaust up and roll the front guards and maybe a slightly narrower tyre and you will be able to go lower to end up with the real shit fitment wise, or just pull your guards a bit so it reps flushness and doesn't look so cop-happy.

Link to comment
Share on other sites
TALBO Grand Master

TALBO

Posted
Posted
i just saw the 3.9 litre bit but i think that is a crock, they only use 1 side of the rotor each power (Stroke) so they are only using the 1.3 litres. that's like saying that a 2 litre engine is really 4 litres because the pistons sweep 4 litres per full cycle.

Also that bit about gearing up the eccentric shaft 3 times to use regular gearboxes is also grasping at straws. They use a 3 times gear up because the rotor has 3 sides, so him saying that they could step it up to 6:1 then there would have to 6 sided rotor which would be huge.

I have nothing against rotary engines, in fact I love them and the sound they make, but I have to agree with the whole 3.9L displacement argument as each rotor has 3 combustible sides to it for every one rotor revolution (not crank or eccentric shaft revolution).

Link to comment
Share on other sites
Guest
This topic is now closed to further replies.
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Lithium
      Boost level and torque curve

      By Lithium · Posted

      There is a LOT of stuff that can be done, it all depends on how much time and money you want to spend on doing in.  Not all ECUs will be able to do it, and the more control you need the more time and knowledge needs to be put into making it work.  If you're willing to spend the time and money and have the right hardware and skills involved there's a lot that can be done. 
    • thx78
      Boost level and torque curve

      By thx78 · Posted

      I am impressed with all this level of adjustment. I didn't expect all this possibility
    • Lithium
      Boost level and torque curve

      By Lithium · Posted

      Correct.  In the case of the 500kw dyno plot I showed you the car actually runs two boost control solenoids for boost control and a 5psi wastegate spring.  It allows me to control how much boost pressure is applied to both sides of the wastegate valve at any point and fairly accurately control boost target as a result. I've tuned it so that it's able to target anywhere from 5psi to 25psi depending on what's needed.  The target tables I've set up in that car are Gear vs RPM, so every gear has potential for a different boost (and torque) curve.   First and second gear have quite low boost targets, third gear actually has different target boost all the way through the rpm range as it's a stock RB25 gearbox - the boost targets have been chosen to maintain a peak of 600nm (what the owner has set as the maximum torque he's happy with putting through the stock 3rd gear) but it carries that to the rev limiter.   The boost curve to achieve that is something of a ramp up, then hold, then ramp up again and the power curve looks more like a flat line haha.  
    • thx78
      Boost level and torque curve

      By thx78 · Posted

      so you can decrease or increase the boost depending on the diet as you wish?     by acting on the wastegate?
    • Lithium
      Boost level and torque curve

      By Lithium · Posted

      That's torque and power, it's all from a single run.  The boost curve is "held back" from it's peak target in the 3500rpm to 5000rpm range from memory, so it ramps hard to something like 18psi then climbs more progressively to 23psi nearer 5000rpm.   It makes the torque (and power) ramp more "natural" and less hard on parts and traction, it doesn't feel artificially held back.   
×
×
  • Create New...