me and my buddies were wondering what production car has the highest redline from the factory?

 

I'd guess an RX-7...but that's a rotary.

 

I googled Highest redline and found out that the R6 has the highest redline for a four stroke production engine.

http://en.wikipedia.org/wiki/Yamaha_YZF-R6

 

What about a ae86 with a silvertop. i think it redlines at 12k

 

Yeah, the rotary is kinda unusual. I owned a 3rd gen for about 4 years, but I never managed to find whether the rpm quoted refered to engine or crank rpm - I always assumed rotor rpm. Unlike a regular piston>con-rod>crank setup, the rotor does not turn at the same rate as the crank.

The new R6 mentioned above is the highest ever for a production bike - 17,500 rpm IIRC? Having said that, peak power is still around 15k, but they gave it more headroom for track flexibility so you aren't forced to shift immediately after peak power.

I remember the old Lancia Delta Integrale turbos used to rev to 9k rpm which seemed very high back in the day. They also featured a limited overboost where it would allow extra turbo boost for 10 secs or something like that.

 

From the factory the S2K has a higher redline than any RX-7.

 

if ur thinkin about the initial d car motor... thats a race motor, and not factory spec. i believe that motor that is in the ae86 (or the motor its post to be....) was from some racing group from the early 90's. but if ur thinkin about any red line of any motor i'd say it would be some f1 cars... 24000ish rpm

 

production car motor.... R/C car motors rev really fast... my old HPI .12 motor reved at 48000 rpm but i'm sure the sky is the limit on motors... as long as it was built to run fast...............

 

NSX-R is pretty hight too.

 

...I just guessed the RX-7 because I know rotarys should be able to spin faster because they don't reverse the momentum of any piece like a regular piston engine does...I didn't look anything up.

 

Stock RX-7 was about 7800 ish. The 2.0 S2000s were closer to 9k. This has dropped a bit with the bigger engine, but it is still pretty high.

The big difference with a rotary is that it produces power 3 times for every revolution of the rotor rather than once per 2 revs of the crank in a conventional 4-stroke reciprocating engine.

 

You look at the link?

A new version will be released in 2006 having a 161 kg (357 lbps) dry weight, delivering 133 HP (97.8 KW) and running at up to 17500 rpm.

Wow!

 

well from the factory and not rotary i would guess s2k with their old 9k redline

 

When the Honda roadster came out, I remember reading about what a technological marvel the S2K's redline was. A big issue with production car engines, which motorcycle engines don't have to worry about, is one of emissions. A large bore, short stroke motor can rev much higher than a longer stroke motor. Problem is, when the bore gets very large compared to the stroke, fuel does not burn as completely which causes a car engine to fail emissions standards.

 

People have dynoed bikes like my F4i and found that they ran better on 87 rather than 91 octane because the burn is faster - at 14,000 rpm there isn't a lot of time. The incomplete burn was also a big issue for rotaries because the burn takes place over a large area compared with a cylinder.

On a % basis, bikes are a lot worse than cars. By volume, it doesn't look as bad given that over half the vehicles being sold now are SUVs with > 4 litre engines.