final drive

J8k'S CRX · Post by **J8k'S CRX** » Fri Apr 27, 2007 12:31 am

what the difference between 4.785 and 4.928.

i know :google: it, NO! i looked at the thread spork put up and the 98+ itrs have the 4.785's in them and all other honda trannys are much lower. i know that the final drive allows you to mess with the top speed and acceleration, i just need the difference in the two. im building a street car, high rpm's some were past 9 so what one will help more for high rpm racen?

thank you.

Post by **budget_crx** » Fri Apr 27, 2007 12:40 am

the 4.7 is slighty longer and you will get a higher mph per gear, the 4.9 is shorter and will be better for low speed acceleration. But both of those are honestly REALLY short (like 4X4 short). what are the rest of the gears? just for comparisson stock CRXs came with 3.88 and 4.25 final drives

J8k'S CRX · Post by **J8k'S CRX** » Fri Apr 27, 2007 12:49 am

im still looking into what other gears to us, those are the final drive mugen makes. i wont a 40 punch car form 40 to say 100 i wont it to scream.

im still learning about motors/ power and shit, also ecus, and trannys, those last two i know nothing about. and not ashamed to admit it. hell im only 18.

Post by **budget_crx** » Fri Apr 27, 2007 2:31 am

the best way to choose a gearing setup is by trial, trying them out to see which one fits your needs. since the mugen gears are prob pretty expensive i would just try to find someone wit them in a similar setup. then you can see how thier car did with the gearing and take the info they gave you and apply it to your gear choice. If you need any help at all with transmissions rickles is the guy to talk to. he practically changes his gearing weekly :worthy:

J8k'S CRX · Post by **J8k'S CRX** » Fri Apr 27, 2007 2:35 am

budget_crx;38992 wrote:the best way to choose a gearing setup is by trial, trying them out to see which one fits your needs. since the mugen gears are prob pretty expensive i would just try to find someone wit them in a similar setup. then you can see how thier car did with the gearing and take the info they gave you and apply it to your gear choice. If you need any help at all with transmissions rickles is the guy to talk to. he practically changes his gearing weekly :worthy:

thanks jake. :occasion14:

Post by **budget_crx** » Fri Apr 27, 2007 2:38 am

J8k'S CRX;38995 wrote:thanks jake. :occasion14:

no problem jake :occasion14:

Liquor Assassin · Post by **Liquor Assassin** » Sun Apr 29, 2007 9:40 am

budget_crx;38961 wrote:the 4.7 is slighty longer and you will get a higher mph per gear, the 4.9 is shorter and will be better for low speed acceleration. But both of those are honestly REALLY short (like 4X4 short). what are the rest of the gears? just for comparisson stock CRXs came with 3.88 and 4.25 final drives

know where to find a 4.25 tranny? i think mine has the 4.78 and it is way to short... i dont even use first

Post by **budget_crx** » Sun Apr 29, 2007 4:45 pm

Liquor Assassin;39498 wrote:know where to find a 4.25 tranny? i think mine has the 4.78 and it is way to short... i dont even use first

rick might have one, i have a 91 LX transmission if you are interested

sokkie · Post by **sokkie** » Tue Sep 25, 2007 9:36 pm

i have 4.7 fd in my car its feels fine. anything below 4.4 is too long for me

Spork · Post by **Spork** » Tue Sep 25, 2007 9:53 pm

Liquor Assassin;39498 wrote:know where to find a 4.25 tranny? i think mine has the 4.78 and it is way to short... i dont even use first

you realize that there is no 4.25 final drive for b-series (i believe you have a b18a, correct)
there is 4.266, 4.4, and 4.785. I will have an extra 4.4 here soon, if you think you might be interested in that... and if you have a 4.785, I would be interested in trading you.
http://www.ff-squad.com/tech/temp/Bgears.htm