4.10's Ford Motorsport or Ford Gears???

[PhkinQk]

I don't know if this was asked before or not.................

Ok here it is.......my Ford tech is telling me that the Ford Motorsport 4.10's I asked him to install are balanced horribly, if at all. And will vibrate and make noise mostly at higher speeds but they will make noise.

He called Ford Motorsport with me there and they said that these are their cheaper alternative gears or otherwise known as "off road" gears, so they don't take the time balance them for everyday driven cars.

And the Ford Motorsport guy and my tech each said that the regular Ford replacement 4.10's won't make any noise or vibrate.

I do drive fast a lot, street race now and then and am forced to once in a while do a burnout or two, but I don't drag race the car.

I've talked to one other board member any theirs makes noise. So wondering from you Ford Motorsport 4.10 gear users, does your make noise and vibrate?

So any info would help. Thanks in advance, Rob

[Donny Carlson]

I don't know if this was asked before or not.................

Ok here it is.......my Ford tech is telling me that the Ford Motorsport 4.10's I asked him to install are balanced horribly, if at all. And will vibrate and make noise mostly at higher speeds but they will make noise.

He
I was told a similar thing by my master tech at Team Ford. His explanation was that the OEM Ford 4:10s are cut better and won't make any noise or vibrate. The 4:10s on the aftermarket (which I assume he also means Ford Motorsport) he says may (or more likely "will") make noise at higher speeds.

One other consideration - Scott told me that if you buy Ford OEM gears and have them installed at a Ford dealer, they are waranteed by Ford. The others are not.

The difference according to Scott is that the regular Ford OEMs cost about $200 more.

[TAF]

Donny is right ^^^. Here is from another thread/post that I passed on this info...


Here's the way it's been explained to me. When gear sets are made by/for Ford, there are 4-5 levels of quality in the cutting of the ring/pinion. They start with "A-gears" which go into Lincolns. "B-gears" which go into Ford & Mercury Passenger cars. "C-gears" which go into Trucks and SUVs...and so on.

"D-gears", which are the lowest quality (meaning in the precision of the cutting of the ring/pinion) become Ford motorsport gears. In other words...most of the "outcasts" become Ford motorsport gears. That's why you can buy them for $150-$180 (compared to $450-$550 that you could purchase some "A-gears" in 4.10s/4.30s if they are even made for something like the Navigator), that's why they don't come with any warranty and it is usually a hit or miss whether you get a good set that are quiet or not. This is usually not a concern for most performance folks, cause these are usually going in Mustangs, where gear noise is not readily heard over aftermarket exhaust.

This is my understanding of what I've been told...as recently as yesterday.

[TheDealer]

I was basically told they are Ford rejects that don't meet OEM standards. If you notice, most of them come in a Ford box with a Motorsport label over the Ford OEM Part number. :confused:

[Cobra25]

All I know is purchased the Ford 410's off of Dennis for under $200 dollars and I've had them in for months with no problems and no shakes even up to 110 MPH> .

[valleyman]

I have the Ford Motorsport 4.10s that I got through Dennis Reinhart; no shakes, no vibration, no whine, no additional noise or vibration over OEM at all. I've had 'em in for over 4000 miles and had 'em up to the high side of 120 mph several times (I have the MMX driveshaft) though they do most of their living at 70 mph and around town. Verdict? No problems, I'd do it again.

[CRUZTAKER]

I have them as well and experience absolutely no noise or vibration....and I averaged 105 on the way home from Chicago.:nono:

[Donny Carlson]

I have them as well and experience absolutely no noise or vibration....and I averaged 105 on the way home from Chicago.:nono:
I think some of you are misinterpreting what's being said. I've got 4:10's, too, and I bought them from DR. I don't hear any noise, but then, I usually run with the stereo up to pain inducing levels.

It's just a plain fact that the lesser expensive 4:10s offered by Ford Motorsports just aren't the same quality as those that Ford warantees, and you MAY experience noise or vibration. It's luck of the draw... yours may not produce noise of a volume that you notice, and you may not have vibration problems.

BUT, if you do, Ford won't stand behind them like the higher quality, "OEM" gears. Your options are to live with the noise and vibration, or try another gear set, or pony up for the higher grade Ford gears.

As long as my gears don't produce noise noticable to me, I'm a happy camper. But, if the need arises, I'll replace them with gears bought across the Team Ford parts counter.

[Fourth Horseman]

All I know is purchased the Ford 410's off of Dennis for under $200 dollars and I've had them in for months with no problems and no shakes even up to 110 MPH> .

Same here. Only one week on them so far, but no noise at all and no shake or vibration. I had to go with the cheaper gears, my budget wouldn't hold $500 for the better ones.

[PhkinQk]

I think some of you are misinterpreting what's being said.

As long as my gears don't produce noise noticable to me, I'm a happy camper. But, if the need arises, I'll replace them with gears bought across the Team Ford parts counter.
Firstly thanks all for the info, (yes even you Todd, lol) and yeah Donny I've got some money in my tunes too and yeah my ears ring when I get out too, but as you said Donny my point is, "any noticeable noice/vibration" cause there are times I have no radio on and passengers. And I've heard others talk of Scott at Team Ford's tech ability and trust his word too.

I will say that I'm pretty squeak, hum and rattle noise sensitive, lol. I've not had a car as noisy as this one since my 1980 Turbo Trans Am, lol.

So if the bottom line is........... with Ford Motorsport there maybe problems......with the higher grade Ford OEM there will definitely be no problems or if so Ford will replace them without problems.....if that's the case then it seems, money aside, my choice is made.

I will first ask if my guy will replace the Motorsport gears if I don't like the sound of them, but if he won't I think I have to go with the sure thing, the Dealer install is wayyyy too much to pay for twice. :(


Anyone actually have problems with there FMS 4.10's?

[Bradley G]

I haven't heard any one complain about gears here .Most everyone is apparently too revved up with extra accel. to gripe :shot: . Who knows how much top end speed is sacrificed as you go up in ratio ? 4:10 seem to be most prevelant on this board:baaa: I think I want to try someones first befor I decide which if any I would use.

[RoyLPita]

I've talked to several technicians who do rear ends and they said that they have not heard of any such problem. New gears are mated at the factory and mic'd. Variations of +/- 2 thousandths are written on the pinion. This adjustment is used when selecting a pinion shim. Ex: If the rear end housing takes a .024 thousandth shim and the pinion has a +1 showing, then you will need a .025 shim. Vibrations only occur from unbalanced tires, bent axle shafts, and out of balance or bent driveshafts. Whine would occur if the backlash is not set properly or a used gear set is installed. My workplace did a MM for one of our members and have heard nothing whatsoever about any rear end problems.

Just my .02 and then some.

[Glenn]

I put 1,200 miles this week on my just installed 4:10 gears (Ford Racing - $150) and PI TC from Team Ford. Speeds were 70-90 mph about 80% of the time. I have no gear whine or noise. 99% of any gear whine will normally be from less then perfect installation. Never have any gears installed except by a Master Mechanic who absolutely knows what he is doing and has done 100 gear changes. You will not have a problem.

Glenn

[mungce]

I got my gears from DR, and they way I see it, if you have a good installer, one who markes the gears, for good alignment, your good to go. I have about 10K on my gears and no noise or problems.

Jim Williams

[halucin8]

I have the Ford Racing 4.10's and they whine like hell. It's pretty annoying actually. Especially on decelleration. Honestly, if I knew they were going to be this loud, I would not have bought them.

[TooManyFords]

Whining gears is a sure sign that they were not installed correctly. Mine whined too (4.30's) when the wrench installed them the first time and I had to show him how to install them correctly the second time. The are perfect now.

Take it somewhere else and have the installation redone.

John

[Logan]

What John said...

If your gears whine, they're not installed correctly. Take the car back and have them re-install them on their dime.

[mungce]

It's all about the correct alignment, when your doing the install. Don"t Accept these other" reasons " for whinning gears. All of the Ford gears are good if properlly installed !!

Jim Wiliams

[halucin8]

That's what I thought, too. Unfortunately, I live close to Raleigh, NC and had the gears installed in Atlanta while my car was having body work done. The mechanic offered to check it out, but 14hrs is a long drive for that. Will the whining cause any damage or leave me stranded on the road??

[PhkinQk]

Halucin8 if that's your Marauder in your profile pic's then maybe it's not the gear install, lol. Man that hurts..........Ouch.




That's what I thought, too. Unfortunately, I live close to Raleigh, NC and had the gears installed in Atlanta while my car was having body work done. The mechanic offered to check it out, but 14hrs is a long drive for that. Will the whining cause any damage or leave me stranded on the road??

[halucin8]

Ouch is right. Yeah, $12,000 in Atlanta, another $500 here in Raleigh due to a bad alignment. Insurance jumping from $60 to $200/month. Yes, OUCH is correct!!!

One more thing, can these gears be reinstalled or do I need new gears???

[mungce]

Well, I can only hope that you don't get too far away from a good towing service !!!!

Jim Williams

[TooManyFords]

One more thing, can these gears be reinstalled or do I need new gears???

Most likely you just need to have them reinstalled. Gears are made of pretty tough stuff. It's not like they are "grinding" back there, are they??

John

[bosstweed]

I don't know if this was asked before or not.................

Ok here it is.......my Ford tech is telling me that the Ford Motorsport 4.10's I asked him to install are balanced horribly, if at all. And will vibrate and make noise mostly at higher speeds but they will make noise.

He called Ford Motorsport with me there and they said that these are their cheaper alternative gears or otherwise known as "off road" gears, so they don't take the time balance them for everyday driven cars.

And the Ford Motorsport guy and my tech each said that the regular Ford replacement 4.10's won't make any noise or vibrate.

I do drive fast a lot, street race now and then and am forced to once in a while do a burnout or two, but I don't drag race the car.

I've talked to one other board member any theirs makes noise. So wondering from you Ford Motorsport 4.10 gear users, does your make noise and vibrate?

So any info would help. Thanks in advance, Rob


Ditto to Valleyman's reply. :up:

[2003 MIB]

I have the Ford Motorsport 4.10s that I got through Dennis Reinhart; no shakes, no vibration, no whine, no additional noise or vibration over OEM at all. I've had 'em in for over 4000 miles and had 'em up to the high side of 120 mph several times (I have the MMX driveshaft) though they do most of their living at 70 mph and around town. Verdict? No problems, I'd do it again.

Ditto. :up: