rs4 tranny mods

[likwidvison]

who would i go about making my rs4 in the mid 50 mph range? i dont wanna lose my accleration but i wanna lil more top end also all i have is just exhaust should i swap out the clucth and stuff? any feedback would be great thanks

 

[Candyman]

I assume you have the nitro rs4? If you're looking to run over 50, the first two things to consider are gearing and engine. Definitely get a 2-speed transmission. That will make getting to that speed easier. You'll have to alter the stock gear ratio so pick up a few extra spur and pinions to go with it. Also make sure you have a powerhouse engine. If you're sitting on the standard .15FE, you probably will never get to 50. From the clamor I'm hearing, you may want to drop in the new OS .18. That is reported to have tons of power. Get a nice header and tuned pipe for it and that will get you moving in the right direction.

Now to ask what I should have asked first. What engine are you running? What gear ratio? Single speed? Is it the belt or shaft drive chassis?

 

[likwidvison]

oh i have a rtr rs4 3 evo so it has a 2spd and a t-15 engine hauls ass already i have a tuned pipe and header it moves i just want a high top end with the same accleration and i have stock gearing i was wondering what spur gear and how many teeth it should be

 

[Candyman]

Here's a link to a pretty helpful chart. I don't know for sure what your current ratio is but if you know it, you can work from there to figure out what gears to change. Simple wisdom is that to go faster you get a bigger pinion or smaller spur or both. When reading that chart, the biggest thing to make sure of is that your 1st and 2nd gear combinations have the same axel distance. If they are different, one gear mesh will be off and you'll likely strip the gears.

http://home.earthlink.net/~rmsaldana/gear_ratio.htm

 

[c3racing0082]

your 2 spd a 47/43 combo?