right, that's why I said my personal preference, the 4.57 would be too short of gearing for me on an 8000rpm redline AP2. this is also one of the reasons i went with the 4.57 instead of the 4.77 gearset.

 

On my car, 1-4 feel like 4.77 and 5-6 feel like 4.33. I have not had the time to calculate what the net is in my configuration. But 5-6 on the AP2 are longer then the AP1. So crusing speeds/rpm are better on the AP2 with taller gears.

 

I have an AP1 with a F22C motor, any idea what gears would be best?

 

that is true. you can see what you're talking about through the reverend's gear calculator.

 

You still have the same gear ratios as an AP1 but you are disadvantaged in that you've lost the top 1000 rpm, which limits your top speed to about 148 mph. Any FD gears you put in will drop this even more. Use the gear calculator with the 2000 - 2003 ratios, then plug in 8000 rpm, reset, to see what I'm talking about. Then you can plug in different gear ratios, reset and see if you can live with the various top speeds and rpm for what you want to do.
eg. 4.57s will reduce your top speed to about 133 mph. Cruising in 6th gear at highway speeds is still OK and liveable and if you don't mind the thought that your car can't go faster than 133, these wouldn't be so bad.

 

wow I couldn't get back on yesterday and this conversation is really picking up. great information guys,although I am no sure what this revernds gear calculator is that everyone is refering to.

Wis if the top speed for the ap2 wih the 4.57's really becomes 135 then I think that may be sacrificing a little to much top end. How did you figure this out? Would you happen to know the speeds of the gears with the 4.44's?

I had assumed from the beginning that the 4.57's may be a bit much for the ap2 as far as my preference, and so I am leaning towards the 4.44's. So i decidedto checkitout on Rick's, and has anyone else noiced that they don't carry 4.44's. At the time the 4.57's ar on backorer, and they have 4.3's, and the 4.77's. Have the 4.44's gone out of production?

 

Bought mine from www.racingbeat.com for $381.00

I dont think you lose any top speed with this gears, since you couldnt reach 8k with the stock 4.10 in 6th (drag limited). Now you can go higher in the rpm range in 6th, so that should help compensate a little bit

 

Aparantly you can get the 4.44 gears from a Kia dealership for just over 300.

 

http://reverendsgarage.net/index.php?conte..._calculator.php

This car is "drag" limited to about 150 mph (give or take depending upon each car's specific power output). This limit is HP and torque related and is not highly affected by "gears". So, any gears you put into this car that reduces it's top speed at redline in 6th gear will be a handicap in that area.
If your gearing reduces your "geared" top speed to 135, then you've given up 15 mph. If your gearing reduces your "geared" top speed to 155, then you've given up nothing since the car won't likely get up to 155 anyway.

PS. AP1 is geared for about 165. AP2 is geared for about 150. If you think about the "ideal" gearing, the AP2 is just about perfect. It can accelerate up to its drag limited top speed about as quickly as it possibly can. Any quicker and you loss top end. When selecting FD gearing, the choice is yours as to what you want your car to do.

 

Thank you xviper for the link.

Strange though becuse I have been able to recently hit 155 on a straight with a decent acceleration in the speed. Fairly slow but for what it wasit got up there pretty fast unil about 145 where the climb became slower. I understand the cars drag limitatios, but you menioned the th gear in the ap2 being limited to aout 150. Do you mean that the gear itself is limited to about 150, or tht it cannot spin faster to get the higher speeds? This could be because of the amount of power the S produces.

Also if reverends gear calulator is correct in it's calculations then it seems that a ap1 with 4.57's is just about the same as an ap2 with 4.3's. Maybe 4.3's would actually be a good choice. The calculations are a bit strange though because by just changing the width of the tires, the speed top speed of each gear seems to go up. I'm planning to upgrade to a lighter set up for the wheels, as well as getting 275 in the rear. with 275 it calculatesthe top speed even with the 4.3's to be above 160mph. I always though wider tires would make a car loss a bit of top speed.