woot! Got my next major mod for my car today!
 

I'll be installing this later this week. Anyone guess what it is? hehe

http://www.7thgencivic.com/forums/at...id=51092&stc=1

http://www.7thgencivic.com/forums/at...id=51093&stc=1

http://www.7thgencivic.com/forums/at...id=51094&stc=1

http://www.7thgencivic.com/forums/at...id=51095&stc=1

um, looks like a new gear for your transmission? is it over drive?

Final gear drive?

Metal parts and some wires! You gonna give a diy?

final drive gear

Yup. final drive gear. it's a 4.57 gear and pinion from richmond gears. I also have the comptech reinforced differential, and the little yellow box is to fix my speedo since it will be off due to the gears. These 4.57 gears are made specifically for the S2000 and are capable of withstanding HIGH amounts of horsepower and are much stronger than the stock gears as well. Also, with the primary reduction factored in, my actual final drive ratio will effectively be a whopping 5.30!!!!!

this is not really a DIY. you gotta know what you're doing to do this install. i'm having it done by a friend of mine who's a honda tech (yes, a smart and knowledgeable one, not some pimple faced 18 year old from shop class). He also happens to own an S2000 as well.

To give you an idea, a stock S2000 with just these gears can run against a comptech SC'd S2k (5.5 psi) and be almost dead even. So far one guy ran a 13.1 with just these gears and an intake.

After this is done, I will get the ACT HD pressure plate for my clutch system. After that my car will be ready for the comptech supercharger, and be able to take the extra HP when I launch. :) I'm building up my power train/clutch/rear end/etc BEFORE doing FI, since that only makes sense to prep the car for the SC.

How much did it cost you?

very nice

That is gonna be one fast S2k pretty soon.

You sure you dont want to swap a D17 in there before your supercharge it? I mean, you dont want to regret not doing it later..

U know what I like about new stuff? Wether it be for cars, computer or whatever...THE SMELL...take a good sniff of those gears and smile, CUZ UR FINAL DRIVE RATIO IS 5.30!! lol :D

^^^:_bow: nice upgrade man! I will get an s2k next year... gotta save up my beer money :o

very nice :rockon:

Those are some low ass gears. Trying to get some torque out of that high revving engine! Your engine will be tached out at low speeds with 5.30's!

lol it's actually not too bad. 1st gear stock goes to 43mph. with the 4.57's it goes to 38mph.

4th gear stock tops out at 118mph.
4th gear with the 4.57's tops out at 106mph.

Should be fun. :) I've read nothing but good things about the 4.57 gears.

Oh, and the gears were $600.

dope

thats gonna be sweet. luckee :sweet:

Yey! I was right!!....lol. Sweet mod dude

Wow I thought there'd me more a difference! I bet those will give you a nice kick in the ass.

BTW that are the stock rear end gears set at?

very nice! definately a worthy mod! 5.3 final drive on a 6 speed, wow, you'll be shiftin non stop! haha

4.10 is stock. with the primary reduction, it's effectively 4.756

if that mod runs as fast as a f/i s2000, why doesn't everyone just do that mod for 600 bux or whatever instaed of thousands?

lol i was gonna be like ..... since when does FWD have those???? lol forgot u got the s2k.......s2kman nice buy

Don't know. some people don't want to go with aftermarket gears. I think it's just personal preference.

however, there are a fair amount with gears that also have FI. many with the SC get 4.57 gears on top of that. which is what i plan on doing.

Does this mod work for any car? Not like a civic, but any sportscar? and What do the numbers mean? I understand the concept.. faster gears = more acceleration, lower top speed (i learned that from tokyo street racer 2)

damn thats nice

well, gears multiply the torque. so that's why a 153lb/ft S2k can beat a 302lb/ft mustang. gearing is probably the biggest factor in a car's acceleration.

the bigger the number is, the SHORTER the gearing is. that means more acceleration, but yes less top end. but how often am I going to go 160mph anyways?

so for example.

stock S2k gearing with torque at peak torque (135 at the wheels). 1st gear ratio 3.133. final drive 4.10. primary reduction 1.16.

so 135lb/ft * 3.133 * 1.16 * 4.10 = 2011 lb/ft force

with my new gears.

135lb/ft * 3.133 * 1.16 * 4.57 = 2242 lb/ft force


So shorter gearing multiplies torque more, making the car accelerate faster.

And yes you can get a shorter final drive gear for FWD cars. in fact i know the integra and 6th gen civics had gears available.

Repped +1 :sweet: thanks for explaining n breaking it down. makes it easier for no0bs like me (who kno nothing about this subject. lmao) to understand. :tup: :tup:

very interesting thread.

damn i didnt know s2k's came stock with 4.10's in them thats nasty. i think mustangs come with either 3.53 (somethin close) or 3.87

Mustangs dont use that high of a FD ratio cuz of there torquey engine. Most mustangs replace the gears using a 4.10 gear ratio for the final drive.