merckx racer

Anyone running/have run 4.77 FD on their AP2?

How crazy would this be?
I've decided my only mods for my '06 will be gears/GC coils/CR sways..
and maybe someday a little Hondata play..

but in regards to gearing I'd like 4.57 but am in fear of how loud the "whine"
is from those...and I'd like 4.44 but don't feel it might be enough for the expense..
and I hear 4.77 are OEM quiet..
any opines?

Leviisbigred

get 4.44s/4.57s and fill with Redline Heavy Shock prof for your ap2 . = win

MBHs2k

I've been wanting to put 477s in my AP2. I say go for it

liquid_helix136

Isnt 4.44s in an AP2 the same as 4.77s in an AP1? I think thats how it goes. If so, I vote for 4.44s because I have 4.77s in my AP1 and theyre awesome!

s2sik

i had the richmond 4.57s and there was no whine at all, needs a good installer.

Gernby

Whine can occur with any gear set if they aren't installed correctly (very hard to do).

If you compare gear ratios alone, then an AP1 with 4.77's might be about like an AP2 with 4.44's. However, if you consider the lower rev limit of the F22, then an AP2 with STOCK gearing is about like an AP1 with 4.77's. The shift points are almost identical in gears 1-4. I had 4.77's in my AP1, and enjoyed them on the street, but they ruined the car for autocross and track events. Now that I have an AP2, I'd would never even consider anything lower than stock gearing. I've actually considered going the other way with it, by installing an AP1 secondary reduction gear.

Breaking Point

My 4.77 whine so loud on mild throttle. Like holding speed or barely accelerating between 43mph-77mph and get a hair quiet then around 85 scream.

liquid_helix136

^^ Backlash probably wasnt set right. My kia 4.77s are just as noisy as the stock 4.10s were, in other words, silent.

Breaking Point

:-/ that gonna hurt the differential or just my ears? And would that redline fluid people keep talking about that's as thick as monkey snot but safe as a 90w any good

deepbluejh

Whining gears means they weren't installed properly and will place accelerated wear on the gearset.