anyone with a manuel 04/05 MM cobb tuned?
 

what is the redline set at?

Lvis,

Please state the point of this or I will close it.

There are probably 100+ 04s and 05s with a MM tune on them. Asking if there is anyone with them, is largely pointless. Most people don't change the redline.

Yeah, not sure what the point is of the thread is but mine is 9500... (thanks MM)!

Im assuming he scrolled across the thread where an MM tune had a 10K rev limiter and he wants to know wither MM does this to all his tunes are not.

Side note, was wondering where the OP has been.

Hows the rebuild?

Unless you have your engine specially built, you will do damage by running higher than the standard redline. Some will lower their redline a couple hundred rpm. Tuners will raise it because that's what their customers want.

How will it damage it? Serious question.

Aviation rotaries rev much higher than 9k, and according to "Street Rotary HP-1549" based of RB r&d they state that anything under the 13k is safe as the rotor vibration is under its resonance.

i think he left mine alone. i know the tach isnt accurate but my fuel cut looks like 9600 on the tach. i could check it with my ap if you want.

op is in danger of getting RIWWPROLLED. lol

Rotor tips can hit the housing due to imperfect balancing and/or e-shaft flex.

OEM assemblies might be balanced sufficiently to exceed 9,000rpm, but they are more likely not sufficiently balanced. You don't actually know how well balanced yours is without a rebuild. E-shaft flex is another problem that will limit it anyway. I don't know of any 2 piece e-shafts for the Renny yet?

Aviation rotaries probably aren't just dealer remans...

Why would you want to rev the engine beyond where it actually makes power while hugely stressing the internals\bearings etc?

I had my rx8 set to 10k rpm by MM because there were some chicanes where not shifting was faster than having to shift once more. That's the only reason I asked him to do it.

At what rpm do aviation rotaries run?

IMO its more of a because we can feature, that just asks for further complications and premature engine failure without adding anything substantial nor worthwhile to performance.

I believe 11-12K but I may be off.

Yes, it should be around 6\7k tops.

Aviation engines typically can run a largely fixed RPM and vary blade pitch for thrust changes. In this case, they will want to run the engine at the torque peak, which is also the efficiency peak. Where that peak is will depend in their intake and exhaust design, any porting, etc...

I know the older engines were limited to 7k due to the bearings, I thought that wasn't the case for todays engines?

I think I confused aviation with race engines, in which case its a mute point as those engines rarely see more than 1 race before its rebuild time.

At least we added substantial substance to another thread

:beerchug: