2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

10,000 Rpms and beyond!!!!

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Old Jan 28, 2002 | 06:31 PM
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10,000 Rpms and beyond!!!!

i know that Rotary engines rev high much easier than piston engines, so what would need to be done to have an engine (S4 or S5) to make these revs possible and have a strong powerband at that level.

(actually i think it would just be cool to have a tac go that high )

but no use doing it if it isnt useful

Justin
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Old Jan 28, 2002 | 06:36 PM
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Are you Richey Rich? Cuz you better be! A car that will operate at that level, staying in the useable power-band will fry engines before 6,000 miles on the odometer! Massive prephial port, custom rotors, and ceramic apex seals ($973 PER ROTOR!!!!!!) for starters! Man, you just plain nuts! j/k
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Old Jan 28, 2002 | 06:37 PM
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you would need to find some way of making the rotors lighter
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Old Jan 28, 2002 | 06:57 PM
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Ill sell you a machine that will do 10k on the tach. its a Kawasaki 750RR Ninja
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Old Jan 28, 2002 | 06:58 PM
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3 window bearings, hardened staionary gears, some oil system mods, balanced and clearanced rotors, a special clutch and flywheel designed for 8500 rpm+, a bridgeport would be nice, etc...
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Old Jan 28, 2002 | 07:05 PM
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Aren't there eccentric shaft issuses at that high of rpm's?
But running pre-mix oil in your gas will help with engine longevity.
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Old Jan 28, 2002 | 07:15 PM
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At 10500 RPM, the ecc shaft is starts flexing enough to elt the rotors hit the housing. Not only does this often destroy the housing, it almost always breaks the seal, even ceramic.

But making an engine that will be safe to 10500 isnt too hard. PP, race bearings(main and rotor), clearanced rotors, lightening helps, but isnt necessary, and a good balance job. You will need a clutch to handle that though. I think the RB clutches are safe to 10500 when the PP is balanced along with the flywheel and engine.
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Old Jan 28, 2002 | 07:16 PM
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i am not saying that i would go around from stop light to stop light at 10000 rpms just would be cool to have the capability

Justin
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Old Jan 28, 2002 | 07:18 PM
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it would also be funny to see a type r guys eves (thinking he has a high revving engine) when my tac hits 10000
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Old Jan 28, 2002 | 07:20 PM
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A very nice personalized license plate that could accompany it would be 10K-RPM
I just think that would be cool.
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Old Jan 28, 2002 | 07:24 PM
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This RX2 is a bad ****

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Old Jan 28, 2002 | 07:27 PM
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oooooh me want!!!!!!!!!!!!!!!!!

Justin
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Old Jan 28, 2002 | 07:33 PM
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just find a F1 V12 or V10, they turn 18,000 or so RPMS
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Old Jan 28, 2002 | 07:38 PM
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My auto meter gauge would do the same thing when i shut it off If you want to go Peripheral port, plan on spending around 4k just for the core motor itself. Throw anouther 300 for a intake manifold, 500 for a 48mm ida, 150 to get it bored over to a 51mm. $150 for a recurved distrubtor, 200 for a clutch/pressure plate. $150-250 for a fuel pump/regulator and new fuel lines. 300-700 for a custom exuast system. Ohhh...then you'll have to pay someone to tune it for you. (There are only a handfull of people around that can tune it for daily driving, and still make 300+ flywheel hp.) These are all rough guesstaments...but in the end, to be honest, you're better off going the turbo route. I've done the hudge street port, 12a peripheral, 13B peripheral....but nothing compares to the foot lbs of torque/hp a turbo motor is capable of making...and still be reasonably quite.

On the other hand, there is'nt anything like a PP coming on to the band. Kinda like riding a built banchee (Quad)...no power....no power....bam...hold on to your shorts guy, because you're going for a ride!
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Old Jan 28, 2002 | 07:47 PM
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my nitro-powered R/C car's engine revs to around 35,000 RPM, its sounds like it is going to explode at full throttle and when I do donuts.
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Old Jan 28, 2002 | 08:04 PM
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Originally posted by InfiniIIIREX
my nitro-powered R/C car's engine revs to around 35,000 RPM, its sounds like it is going to explode at full throttle and when I do donuts.
it think that is what ill get
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Old Jan 28, 2002 | 08:22 PM
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Back in the late 60s-70s rotories were the Sh** when it came to high revs. They came w/ shortlived carbon/aluminum apex seals that didn't chatter against the housings (like what bridges and PPs still use) so they could rev just like they do now w/ carbon seals, but back then piston engine street cars weren't as developed as they are now and had lower redlines. I think piston engines have enjoyed leaps and bounds in development in the last 30yrs, whereas rotaries have only had the benifit of one manufacturers research so they haven't developed at the same rate. It makes me happy to see that the renisiss rotary seems to bridge this gap in technology in one step-equaling the HP and redline of one of the most developed NA engines sold in US-the Honda S2000 engine. Still, since the rotors move at 1/3 eccentric shaft speed it seems odd that our RPM is still so limited...I guess the Wankle is a bit wobbly.
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Old Jan 28, 2002 | 11:07 PM
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Get the renensis engine off the rx-evolve
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Old Jan 28, 2002 | 11:18 PM
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yeah, 'whoo! the almighty s2000'... what an amazing engine...

in 1963 Honda made the s500. now that car had a revolutionary engine. double overhead cams, four carburetors, 9500 rpm redline.

pretty good for its day, i would say
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Old Jan 28, 2002 | 11:25 PM
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Originally posted by VashtheStampede
yeah, 'whoo! the almighty s2000'... what an amazing engine...

in 1963 Honda made the s500. now that car had a revolutionary engine. double overhead cams, four carburetors, 9500 rpm redline.

pretty good for its day, i would say
That car was awesome. Chain-drive, motorcycle engine. It was seriously a motorcycle with a body and 2 seats side by side.
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Old Jan 29, 2002 | 02:52 AM
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you should get a spilt eccentric shaft and a centre bearing in the centre plate. unless its a PP there is no need to pull over 10000rpm
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Old Jan 29, 2002 | 04:23 PM
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some time ago I remember in some street race, that they had an rotary power car that they were launching it at 10,000+ RPM. And it was really cool, and the engine sound was unforgetable... but then the COPS ruin all the fun

I don't know if it was race prepare or anything
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Old Jan 29, 2002 | 07:03 PM
  #23  
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Originally posted by GTUsGUY
some time ago I remember in some street race, that they had an rotary power car that they were launching it at 10,000+ RPM. And it was really cool, and the engine sound was unforgetable... but then the COPS ruin all the fun

I don't know if it was race prepare or anything
If it was launching at 10K, it had to be race prepped.
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Old Jan 29, 2002 | 09:06 PM
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Putting a motorcycle engine in a car was revolutionary? How about when the Berkeley did the same in the 50s? The old S series hondas that S2000 claims heritage to were pretty impressive, but you can't compare a 600cc engine to 2000cc engine when you are talking about redline as there is a huge descrepency in rotating/reciprocating mass. An 80s Honda Interceptor 500 redlines at 14K stock right? My '72 honda n600 sedans twin runs out of oomph at 7k and it is a pure economy car. I guess its just as apples to oranges as comparing piston engines to rotaries though...
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