final drive in EG civic

[MM89]

Currently planning to replace the OEM EG4 Civic final drive
with a MFactory final drive. What is the stock final drive?

Plans are to go for the 4.9FD. Being a bone stock engine,
what improvements can be expected without changing other
gears? Obviously the 4.9FD will give less top end speed.
So moving from the stock FD to the 4.9, how much am i losing?
Is there a method to calculate this? Top speed is probably
around 180km/h?

For daily driving and mild circuit application, should I be
looking into any other FDs? 4.5? 4.7?

Cheers
Mike

[aaronng]

www.carsales.com.au's research section has the stock final drive info.

[MM89]

haha cheers for that, was trying to look for it in redbook...
so the stock final drive is 4.25:1

in that case, would a 4.9FD lower the top end speed too much?
currently the motor is bone stock status, but the goal is to
reach 130kw @ flywheel on an all motor build. The higher FD
just seems to be first on the list for experimental purposes
i guess. Should this mod be delayed to a later point in the
build?

[aaronng]

Doing the math, if you do 3000rpm at 100km/h now with the 4.25, then you'd end up with about 3500rpm with the 4.9.

[delsol9000rpms]

here you go mate... here is the mfactory gear calculator have fun... it will tell you what speeds at at what rpm with the stock f.d vs 4.928 fd

have fun

http://www.teammfactory.com/gearcalculator.php?kmh=0&tirewidth=205&tireprofile=45&wheelsize=16&tirediameter1=23.26&maxrpm1=9000&finaldrive1=4.4&gearratio1=3.23&gearratio2=2.105&gearratio3=1.458&gearratio4=1.107&gearratio5=0.848&gearratio6=0&trannytype=17&tranny=Calculate+Transmission+1&tirewidth2=195&tireprofile2=55&wheelsize2=15&tirediameter2=23.44&maxrpm2=8400&finaldrive2=4.4&gearratioa=3.23&gearratiob=2.105&gearratioc=1.458&gearratiod=1.107&gearratioe=0.848&gearratiof=0&trannytype=

[MM89]

here you go mate... here is the mfactory gear calculator have fun... it will tell you what speeds at at what rpm with the stock f.d vs 4.928 fd

have fun

http://www.teammfactory.com/gearcalculator.php?kmh=0&tirewidth=205&tireprofile=45&wheelsize=16&tirediameter1=23.26&maxrpm1=9000&finaldrive1=4.4&gearratio1=3.23&gearratio2=2.105&gearratio3=1.458&gearratio4=1.107&gearratio5=0.848&gearratio6=0&trannytype=17&tranny=Calculate+Transmission+1&tirewidth2=195&tireprofile2=55&wheelsize2=15&tirediameter2=23.44&maxrpm2=8400&finaldrive2=4.4&gearratioa=3.23&gearratiob=2.105&gearratioc=1.458&gearratiod=1.107&gearratioe=0.848&gearratiof=0&trannytype=

hey man!
thanks for that dude! that was really useful :)

[e240]

For a relatively stock engine, I'd go with a 4.9 yay!
You'll find that theoretically your top speed is limited, but you get better acceleration and it takes less time to get to that Top speed which is sufficient if you play around the tracks in NSW



Currently planning to replace the OEM EG4 Civic final drive
with a MFactory final drive. What is the stock final drive?

Plans are to go for the 4.9FD. Being a bone stock engine,
what improvements can be expected without changing other
gears? Obviously the 4.9FD will give less top end speed.
So moving from the stock FD to the 4.9, how much am i losing?
Is there a method to calculate this? Top speed is probably
around 180km/h?

For daily driving and mild circuit application, should I be
looking into any other FDs? 4.5? 4.7?

Cheers
Mike

[MM89]

So for a higher horsepower that has the capability to reach the higher speeds,
it would be better to use a lower FD because they can actually reach those
higher speeds and it takes less time for them to accelerate to that speed anyway?

[e240]

yes

:-)

[delsol9000rpms]

your top speed reduction wont be noticed coz you should never be going 220+ kmph... instead you get much better acceleration

[MM89]

your top speed reduction wont be noticed coz you should never be going 220+ kmph... instead you get much better acceleration

not with a D15 anyways :)
thanks for the info guys, according to your suggestions and the gear calc.
the verdict is 4.9 !!

[delsol9000rpms]

yepp.. and if you look in the traders sectionn... Adrian from toda is doing a good price on the Mfactory f.d's.. i think its 700$

[MM89]

yepp.. and if you look in the traders sectionn... Adrian from toda is doing a good price on the Mfactory f.d's.. i think its 700$

exactly where i was intending to purchase mine =]
cheers mate

[delsol9000rpms]

nws mate

[ekvtec]

HAHAHAHA i thought your were selling your car and going for a "final drive"

My BAD