How often do you get to see 7500rpm without going over PSL? How often do you feel 7500rpm is not enough for everyday driving and you wish you can go all the way to 9500rpm?

 

Why do you think im selling my car?

 

are you talking about only automatics i asume?

if so I answer you're question with another question. Why did you buy an automatic sports car expecting it to be something it isn't.

Of course, if you aren't talking about just autos... then what are you talking about?

 

Hes talking about auto's i assume since this is in the Auto thread section, Lucky for me though I didnt buy a auto, It was given to me... Im selling mine and should be picking up a Winning Blue...

 

Why always with the hating of the AT? If you don't have anything constructive to say then do us a favor and don't post.

I own a manual now and I really miss my AT.

 

You should run it to 7500 and keep it there, see how long it can run for and get your answer.

 

Whats all this 7500rpm talk abut, my AT goes up to 8600

 

Lol I use my 7500+Rpms all the time.... Just have to be smart on where to use them.

 

me too!

 

get a Cobb AP and you can rev it as high as your tach goes.

 

At what speed do you hit 7500rpm on 1st or 2nd gear on manual mode?

 

i get to around 60mph or so in first. not stupid enough to get there in second.

 

Never - and I own an MT

 

So 9k is safe enough for the 4AT tranny, with the proper cooling of course? I did 8 auto-x laps in mine that has the 7500rpm redline, and by the time I got home, the fans ran for 5 minutes straight after shutting down the car.

 

^^^ From what ive read the 4AT tranny is strong and can handle alot, but a second tranny cooler or BHR's Radiator for AT's is pretty much all you need if you want to raise your redline (for cooling purposes obviously... you still need the Cobb AP), but theres definately NO point in going to 9k in the 4-port auto (not sure about the 6-port, I forgot what the dyno graphs looked like for them) because ALL the power drops off at about 8K - 8.2K rpms so most people have the redline set ~ at 8.5K-8.6K to gearing purposes so they dont have to shift constantly, so you have some give; just like the 6MT's max power is at 8.5K and the redline is at 9k... gearing purposes and it gives you some room...

Anything about 8.6k in a 4port is useless and just a waste of gas and more wear/tear/heat that your tranny doesn't need... Isn't that right Easy

 

That's exactly what I thought. There is no point in going to 9k in 4AT, but in the 6AT, there is because it's the same engine as the MT. Is the gearing the same in the 6AT as the MT?

 

Gearing has nothing to do with engine output. It'll affect power transmission. Your engine will still run out of steam at 8600 rpms, regardless of your gearing. The gearing would just put you at a different speed.

The 6-port engine tops out at 8600rpm. Some guys like to shift above it so they land above 7000rpms in the next gear (shifting drops it by 2000-2500rpms??).

 

time for some more cooling mods. BHR radiator, second oil cooler, Mazmart water pump, better fans, lower thermostat.

were you running in 1st the whole time?

 

I see 7500 daily son! but I also go over the PSL when it's on a safe road of course :-)

I have a 6AT also, interesting to hear it can rev higher with supporting mods. It would be even more interesting if someone would do it and post a dyno so we can all see if it's worth the time and money :-)

 

This statement is a little confusing. The Renesis is a 232HP engine, rated 8500rpms. Your tachometer is about 500rpms off at 8000-9000 rpms, so therefore reaching 9000 rpms would be the 232HP rating.

The 6AT is rated at 212HP at 7500rpm (I believe this is the rating, can someone confirm?) - so there is the difference.

Supporting mods - an AP, and a second oil cooler, and the Mazmart water pump. The additional mods that Nuke suggested (thermostat, radiator, better fans) are not necessary in my opinion for a N/A car, unless you do have some cooling issues already (i.e. the OP).

 

The difference between auto shifting and manual mode to extend rpms beyond the 8600 is huge, much faster in acceleration.

 

is all depends yr purpose...
REALLY daily drive, you don't even need 6000rpms
I shift at 2.5K on my MX3 and Miata
But for track or race, you are always hungry for rpms, and gears...
I love my 4AT daily drive but on the track, I always hope I have 1 more gear...and 2more Ks rpm

 

That's my mistake. I confused myself on this one, so the 6AT can actually shift over 7500rpm? I thought it was governed to 7500rpm(even in manual shift mode)? I don't think I have tried pushing it past 7500rpm in fear of damaging something.

 

My supporting cooling mods actually serve a purpose. Of course now nine is not NA anymore.

 

You need the Cobb AP to do it.

No fair