Hey I am just wondering when you shift for max speed when do you prefer to shift. Is it pushing it to Redline before the rev limiter kicks in or is there a better point to shift at where a more optimum power ration will be atained? Thnaks
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When I have fun I like to make things squeal,wether its my tires or my girlfreind
2001 Tibby mods
AOS CAI, Front Strut Bar, Clear Corner, B&M Short Throw Shifter
On my 2002 Accent GS, I usually shift at redline or close to it in 1st gear. In 2nd gear and all the other gears I shift at 6,000 rpms(redline is at 6500 rpm). According to the dyno on my car, peak horsepower comes in at only 5400 rpm, but it does not start to really drop off till just over 6000 rpms. It's peak torque is at 4000 rpms, and when I shift from 1st to 2nd at redline, it drops the rpms down to just past 4000 rpms. In all other gears as well if I shift at 6000 rpms then the rpms will come down to over 4000 rpms so I am always in the cars power band.
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old car; 2002 Accent GS 5 speed
custom 3" cold air intake
custom 2" cat back exhaust
Dynomax Super Turbo muffler
10 mpg on the race track
53,105 miles as of 06-29-03
90 hp and 95 ft lbs at the wheels
New car; 2003 Dodge SRT-4
13.6 @ 104 mph, not stock!!
well, as with your modifications listed, you will see that your HP will just about fall on its face at around 6K i suggest shifting from there, although in first gear it's hard, as it is a very steep first.
I'm pretty sure your right about the power falling on its facde around 6500 RPM I was going up against my buddy with a 03 tibby and he shifted earlier and he took me. Not by alot but he still was on top. His car was bone stock with a sub in it to. I figured I had him but it was the other way around. By about a car length but what can you do but practice right.
__________________
When I have fun I like to make things squeal,wether its my tires or my girlfreind
2001 Tibby mods
AOS CAI, Front Strut Bar, Clear Corner, B&M Short Throw Shifter
funny.. i hold my accent out to redline.. and that was before intake.. and ran better times than when I shifted sooner.. eh.. maybe mines just weird. Got .1secs for holding 3rd to 80.. only do that at the track btw.. I was looking at a dyno for a 2.0.. somewhere on this board the other day.. and noticed above 6400-6500 it did loose some.. but it was still higher at the redline than when u shift and drop to 4k... So wouldn't it be better to hold it in the higher hp and get a higher rpm for the next gear?
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Originally posted by Sunrise_Racer_20
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well, as with your modifications listed, you will see that your HP will just about fall on its face at around 6K i suggest shifting from there, although in first gear it's hard, as it is a very steep first.
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so are you saying to run the car up to 6k and then shift and drive it all the way to 6k and then some...... wow.... wonder if the car can take it....... I'm always afraid of breaking my little tibby....
The Beta is one tough engine bro. It can withstand this kind of punishment. With a few basic treatments to the stock parts, it will be able to come back for more.:evil:
__________________ "The racing car is not a mechanical exercise, it is not an art object. The racing car is simply a tool for the racing driver."~Carrol Smith(1932 - 2003)
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Peak shifitng RPM on a Tibby
Linear Mode
