Installed 4.10 gears!

94GTcobra · Apr 23, 2008

They just installed my 4.10 ring and pinion, but there's whining noise, is it because they are new and new to break in. Or is it because they are installed wrong. Also what is the cheapest calibrator for the speedometer.

stang4u2nv · Apr 23, 2008

Sorry man but your gears have been installed wrong. For the record the best gears you can buy are the ford racing units which are made in the same machines as the factory units. take the car back to whoever installed them.

idro · Apr 23, 2008

94GTcobra said:
They just installed my 4.10 ring and pinion, but there's whining noise, is it because they are new and new to break in. Or is it because they are installed wrong. Also what is the cheapest calibrator for the speedometer.

bad install should get no vib/noise

94GTcobra · Apr 23, 2008

The ring and pinion is Motive Gears. I though that Motive gears were made by Ford Racing.

topless95 · Apr 23, 2008

did you check to see if they refilled the diff? If so, is it full

94GTcobra · Apr 23, 2008

no i didnt check, how can i check it?

94Pro-5.0 · Apr 24, 2008

are they brand new or used? i have heard used gears can give you a whine

AaRoN · Apr 24, 2008

I have Motive 4.10's with no whine. They were either installed incorrectly or you are low on fluid. Was friction modifier used?

94GTcobra · Apr 24, 2008

they are brand new, I guess i have to open the cover and see for myself how much fluid they put. What is used to put the fluid in.

P.S.I.cho · Apr 24, 2008

the whining seems to be quite common with the motives for a while people thought the motives were being mis-machined but the truth of the fact is that motive made FRPP gears for a while, how ever the new motives are being made in italy now, and there was a known issue with a certain number of gears whining but, people also have related this too an improper install, yet many gear installers say only use a true FPP part number and to stay away from the motives....so you can possibly relate it to the motive gears themselves but typically its the installers fault

dalpoas83 · Apr 24, 2008

there is a fill plug on the front of the diff housing. get a 3/8 ratchet w/ extension remove plug and put your finger in the hole and see if you can reach the fluid if not go ahead and top it off until fluid comes out of the hole then reinstall plug and see if that helps. usually the fluid bottles come with a tip so u can just squeeze it in.

ryclef331 · Apr 24, 2008

I've never had a set of gears that I put in whine....Motive or Ford Racing or otherwise. Even used gears (how I managed that, I don't know). If the noise ain't gone in 80 miles, they're not in there right. If the noise is not EXTREMELY loud, and you can live it , it will be fine...otherwise, they need to be reshimmed before they fully seat.

94 DropTop · Apr 25, 2008

my 4.10's also whine. i even took it back and the guy took it back apart and the patern was perfect again. mine only wines between 30 and 40mph

95 svt cobra · Apr 25, 2008

idk man, i dont think a little whine can hurt, if it starts rumbling or rattling locking or anything else other than whining stop immediately and tow that prick back to the installer

94GTcobra · Apr 25, 2008

yea, mine only whines in like the 40-50's mph.

Shocker98GT · Apr 25, 2008

Typically whine is due to the clearances. You may need to shim them. I think that's mainly why the FRPP gears don't do as bad as the motives, typically with the FRPP gears you don't have to reshim them but it's always a good idea to check.