Well today I cared my car to get my 4.10s installed at 10:00a.m., My car was'nt ready untill 5:30. I get to the shop and found out my car already had 3.73's in it, and thats why my speedo's been off by 5mph since I got my car.

Any way the mechanic that installed the gears told my uncle, who was there when I arrived to pic my car up, that they were wineing, and that he followed the enclosed specs in the Motive box. He told him that they may quit, be had motive gear's in his camaro and eventually just replaced them because of the wineing, my uncle told my this right befor I left, and I was in kinda a hurry so I just left without talking to the mechanic, wich was stupid on my part.

Did any of you who have installed gears have wineing, mostly when you let off the gas? If so will it harm you rear end, I heard that it will shorten the life of your rear end, and also did your shop fix the problem for free? When they installed them did they give the old barrings and such back (if you bought the barring kit)?

I'm a little aggrivated right now so if you could help me out I would appreciate it.

Thanks,
Travis

 

It's strange because it seems like more people than you probably realize buy gears, take them to the shop to get them installed, and then find out that their car already had the gears they wanted installed lol.

Your gears shouldn't whine unless there's a problem.. and I have the FRPP gears, and they never whined one time. It sounds more like they were shimmed incorrectly or the pinion depth is off or something of that nature. It shouldn't harm your rear end as far as I know.. but your gears will start wearing quick, which is bad.

You would think they would fix the problem for free, since they're not suppose to be doing that

 

The shop should get the gears aligned properly before anything else. Whine gets annoying after a while. Most shops prefer FRPP gears because they have an easier backlash to setup, motives are a little more difficult.

I would have them make sure they are shimmed and set properly before doing anything else.

 

mine are the same way. the guy who installed mine put them a little tighter then he likes, but they will last longer then the engine. thats just the way motives are i guess. i hate mine. i probably told you that before you bought those. in the end these cost the same as the FRPP's because most of us have to buy the master bearing kit and shimms which bring the cost up. not worth it. i learned my lesson. my answer to this problem is turn the radio up.

 

So If you were me would you take it back to the shop, or live with it? And that sucks, because the reason I bought Motive was because I heard they don't wine as much.

 

the installer for my car test drove it before he called me to pick it up. 3 days later i got my car and a pissed off installer telling me that those gears are crap. he took my rear apart 3 times and ended up putting a setting that kept the whine at 40-45 mph on accel and decel is just annoying.

so take it back and ask him to do the best he can.

 

They do and they dont.

It all depends on how they were installed. If they are in the hands of an installer who has worked with Motive gears alot, then chances are they wont whine at all. If the person hasnt really worked with them before, you'll probably get more whine than you would like.

 

Well thanks guys, I will talk to the mechanic as soon as I get a chance and see what he will do. Hopefully he want charge me to reajust them.

 

yeah I agree with Shambles on that, if they're whining then they aren't installed right

 

Ive got motive and I dont have any whine, when my mechanic told me I may because of the steeper gears and being an aftermarket brand. We set backlash the best we could which happened to be right on. You want play but not too much, but you dont want it super tight either.

 

So I should tell my mechanic to tighten the backlash a little, and see if that will rid me of the wine.

 

Id take it to a driveline specialist. It sounds like he doesnt know what hes doing. The backlash is supposed to be between 5 and 10 thousanths. Mabye hes not setting the shims right. Dont let that whining slide because its only asking for problems.

Did they use friction modifier? Try adding a small bottle of that into your rear end and see if it fixes the problem.

 

lol@Try adding a small bottle of that into your rear end and see if it fixes the problem


sorry...lol

 

Itll lube his rear end up just the way he likes it! Less friction during quick movement..

 

Gear whine is usually caused by the pinion depth or backlash being incorrect, so id check to make sure these are correct.

If the ring gear or traction-lok doesnt have a smooth finish where it mates this will throw everything off and can possibly create a whine.

The shop that did the install should fix this free of charge, if they wont id suggest going to a new shop or getting the proper tools through summit and doing it yourself.

 

Definately take it back. If you let it whine too long, it will wear the gears incorrectly, and you will be paying for them twice.

 

My gears had a lil whine for about 4 days aftet I got them... I figured it was just a lil break in period... all is well and my lash is fine. I had lucas rear end lube put in when we did the install. I couldnt really hear the wine over my exhaust tho.

 

dude you guys are scaring me my gears get put in soon i hope they dont whine, althought i got the frpp

 

They shouldnt whine at all if installed correctly

 

I have Ford's OEM (not FRPP's) installed by a Ford tech as a side job. He told me to get my own parts, but that he wouldnt do anything but OEM Ford because of whining issues. I bought the Ford gears off of a guy on the Corral.

Cost me $150 for installation, and $30 for misc. parts like bearings. He had it done in 3 hours, and I got to watch him do it.

No whine that day, 4 months later, still no whine.


I heard the newer FRPP gears now are motive?

 

I have heard the same thing about the new FRPP gears... just like the FRPP pullies say steeda or something on them.. some company other than ford.

 

if mine whine ill be pissed :censored:

 

Just make sure you ask around and take them to a reputable shop, don't take them to the first shop you go to. Don't make the same mistake I did.

 

do gears void your warrenty??

 

well, anything voids your warranty pretty much unless Ford installs it. But Ford denied me warranty service on something they screwed up so I said forget you and started modding away.

 

out of this list of planed mods which ones void the warrenty

k&n air filter
gears
catback exhaust
catted x pipe

 

All of the above in one way or another.

 

Only the weak hearted and dumb will have their warranties voided from pretty much any modification.

Magnusson-Moss warranty act states that aftermarket parts cannot void your warranty except that: the non-OEM parts are not covered under the car warranty, or the parts that were added were the direct cause of the failure.

Replace your gears and you lose warranty on your gears. You don't lose the warranty on your differential unless the gear installer did it wrong. The law is very specific about making sure that the owner always has a recourse to warrantable parts and labor.

If you let a dealer void your warranty, then you are the moron in the equation. Sorry. It's the law. Read it sometime. If you change your oil with a non-motorcraft filter and they void your warranty, then 1. they have broken the LAW. 2. to preserve your warranty you can MAKE them GIVE you the filter. They cannot mandate who does the work unless they do the work for free. MMWA was intended to protect the rights of purchasers, not the rights of retailers/service organizations.

Now, the only parts that are virtually guaranteed to void your warranty in all aspects are turbo/supercharger/nitrous. Those pump lots more power than the car was designed for and thence are the direct cause of the failures you'll see. Gears, K&N, TB, Cams, exhaust of any kind, welded on parts like SFC, STB, may not void warranty either unless they caused the failure.

 

yes there is a law that states the dealership has to prove that the modification is causing what's wrong with your car, but some dealerships will say they will not work on it because of a modification because they know that you would have to hire a lawyer to fight them over it. It all depends on how much of an ******* your dealership is.. like I said mine lied to my face and told me they didn't do work to my car even though I had the service order that said they did, and after you have to go through that you don't want morons and liars like that working on your car anyways.

I know all of this from experience, from friends with modded mustangs going to this dealership, and knowing several who work at the same Ford dealership

 

And you have to go in front of a board review made up of other dealer's who decide if your warranty is voided or not.I wonder who they would support.