Do your gears hum or whine

[superford3]

i have found out that the ford motorsport gears are now made by another company and have alot of problems like noise and premature wear,has anybody run into this problem

[RF Overlord]

Negative. I've had my FRPP 4.10s installed for over 25,000 miles, the last 15,000 supercharged, and they are silent.

[Blackened300a]

I get a slight whine if I let off the gas and then get back on it slightly.

[O's Fan Rich]

No they do not and thats even after the EATON LSD was installed too.

[superford3]

Negative. I've had my FRPP 4.10s installed for over 25,000 miles, the last 15,000 supercharged, and they are silent.
ive heard that it was recently so may of had a good set before they switched companies,but thanks for the info

[GAMike]

I just had them installed last month with new bearings and upgraded girdle.

They wine a little, but I was told they would by Scott at Team Toyland.

He says the quite ones go to Lincoln, then next level of noise up to Mercury, then Ford, then Ford racing. He says the quiter they are, the more they cost. All I know is they make my Marauder pull like a Bi@$%! :D If I have noise I will just turn up my radio :cool:

[Power Surge]

Motorsport gears are the worst gearset you can put in your car. It's hit or miss with getting a good set. Motorsport gears are made by Richmond, but they are not even as good as Richmond's own branded gears.

The best to worst brand gears (IMO) are: US Gear, Motive Gear, Richmond Gear, Richmond FRPP gears.

[KillJoy]

I just had Ford Motorsports installed right before Christmas.

No noise as of yet.

I thought Gear Whine was a matter of proper lash / improper installation?????

KillJoy

[Dragcity]

I'm in agreement with Killjoy. (not to be a "killjoy")

[Breadfan]

I just had Ford Motorsports installed right before Christmas.

No noise as of yet.

I thought Gear Whine was a matter of proper lash / improper installation?????

KillJoy

I think it's a combination of cut and install. Higher quality gears can be installed with more variation from "perfect" and still be quiet whereas poorer cuts require a more perfect install for quiet operation.

I'd assume a poor cut could also whine regardless of how perfect the install is.

[MarauderMark]

Motorsport gears are the worst gearset you can put in your car. It's hit or miss with getting a good set. Motorsport gears are made by Richmond, but they are not even as good as Richmond's own branded gears.

The best to worst brand gears (IMO) are: US Gear, Motive Gear, Richmond Gear, Richmond FRPP gears.

Thank you for the info:) .I've allready went threw 2 sets of FoMoCo gears:rolleyes: .

[fastblackmerc]

I've had no problems with my Ford Racing Parts 4.10's.

[mpearce]

I've had no problems with my Ford Racing Parts 4.10's.


Ditto ^^^^^^

[Dragcity]

Thank you for the info:) .I've allready went threw 2 sets of FoMoCo gears:rolleyes: .


Fab a FORD 9" carrier in there....

You must be pushing some big HP an hooking damn hard to be breaking these gears.

[Power Surge]

You'll know right away if they are bad, because they won't spec out on install.

I just did a set of 4.30s in a customer's Mustang, who demanded FRPP gears and nothing else. Well, upon install, we set the pinion depth to spec, then set the gear lash on the tight side of spec. The coast pattern was way off. Reset the gear lash on the loose side of spec, and a little better but still was on the end of the gear. Nothing you can do at that point, the gears were just made poorly. The rear hums on decel, which the customer is living with, because he wanted those gears and nothing else.

If they spec out okay, then you are good. The problem is we've had more FRPP sets NOT work out, then ones that were good.

[superford3]

thanks alot guys for all the info

[glassman99]

I have the Lincoln gears and they have been silent

[MarauderMark]

Fab a FORD 9" carrier in there....

You must be pushing some big HP an hooking damn hard to be breaking these gears.

I had this idea on the back burners. but now that you brought it up (which i totally forgot about)i am going to start looking into making this a reality .Thank you for the reminder Joe:up:



You'll know right away if they are bad, because they won't spec out on install.

I just did a set of 4.30s in a customer's Mustang, who demanded FRPP gears and nothing else. Well, upon install, we set the pinion depth to spec, then set the gear lash on the tight side of spec. The coast pattern was way off. Reset the gear lash on the loose side of spec, and a little better but still was on the end of the gear. Nothing you can do at that point, the gears were just made poorly. The rear hums on decel, which the customer is living with, because he wanted those gears and nothing else.

If they spec out okay, then you are good. The problem is we've had more FRPP sets NOT work out, then ones that were good.
i used them cause the majority here favors these so i thought i'd go with it.But not anymore.:D
http://www.mercurymarauder.net/forums/attachment.php?attachmentid=38 15&d=1091471179

[Pat]

The car has 25K+ on Ford Racing 4:10's, no problems or whine, mech said everything spec'ed out without difficulty. He's a real expert installer and highly sought by the Ford racing community here.

[SamF]

I had this idea on the back burners. but now that you brought it up (which i totally forgot about)i am going to start looking into making this a reality .Thank you for the reminder Joe:up:



i used them cause the majority here favors these so i thought i'd go with it.But not anymore.:D
http://www.mercurymarauder.net/forums/attachment.php?attachmentid=38 15&d=1091471179


How did those get broken? Was it in a standing start? Just cruising? Never noticed until you heard some noise? How many miles on them and were they broken in N/A or S/Charged setup.

:confused:

[glassman99]

That's one way to reduce weight.

[MarauderMark]

How did those get broken? Was it in a standing start? Just cruising? Never noticed until you heard some noise? How many miles on them and were they broken in N/A or S/Charged setup.

:confused:
Heres the thread on the gears.it was s/ced then.
http://www.mercurymarauder.net/forums/showthread.php?t=11689&highlight=noise

[SamF]

Inconclusive eh? Thats the way it always goes. Anyway, IMO I dont think these 8.8's fare well with high power and super hard shifts, no matter the gear maker.

SF

[JACook]

i used them cause the majority here favors these so i thought i'd go with it.But not anymore.

Looking at the contact pattern on the teeth just above the broken ones, I'd be changing installers,
not gear manufacturers. Pinion depth is not correct, and the contact pattern on the drive face is off
the heel of the gear teeth. I don't care who made the gears, they're gonna be easier to break when
they're set up this way...

[Ed Tarras]

I have Richmond's and I get a hum when I hit 40mph once I go over that it quiets down.

[MarauderMark]

Looking at the contact pattern on the teeth just above the broken ones, I'd be changing installers,
not gear manufacturers. Pinion depth is not correct, and the contact pattern on the drive face is off
the heel of the gear teeth. I don't care who made the gears, they're gonna be easier to break when
they're set up this way...

2nd set went the same way and installed by the dealers and so far so good.:bows:

[JACook]

2nd set went the same way and installed by the dealers and so far so good.:bows:

Mark, I'm not sure I understand what you mean.

The point I'm trying to make here is, rather than blame the failures on an inferior gearset, I'm saying that
setup was at least a contributing factor. Your drive-side contact pattern is toward the heel of the tooth,
and a bit high on the tooth as well. That may be good enough for a lighter car with a stock powertrain,
but not for a heavy car with a lot of HP. Under load, the contact patch tends to move up the tooth and
toward the heel, so the ideal setup would be to center the contact patch a bit toward the toe of the tooth,
and just a bit low. The gear in your photo failed from the heel in, which is yet another indication that the
gears weren't set up for high performance use in a heavy car. You weren't using the entire tooth.

Bottom line, this particular gearset needed a bit more pinion shim.

FWIW...

[MarauderMark]

Mark, I'm not sure I understand what you mean.

The point I'm trying to make here is, rather than blame the failures on an inferior gearset, I'm saying that
setup was at least a contributing factor. Your drive-side contact pattern is toward the heel of the tooth,
and a bit high on the tooth as well. That may be good enough for a lighter car with a stock powertrain,
but not for a heavy car with a lot of HP. Under load, the contact patch tends to move up the tooth and
toward the heel, so the ideal setup would be to center the contact patch a bit toward the toe of the tooth,
and just a bit low. The gear in your photo failed from the heel in, which is yet another indication that the
gears weren't set up for high performance use in a heavy car. You weren't using the entire tooth.

Bottom line, this particular gearset needed a bit more pinion shim.

FWIW...

My bad i didn't clarify(watching tv and thinking about what i am writing don't mix well)very well.Yes you are right they were installed wrong both time.the 1st set the teeth were broken the same way towards the end .but i was not s/ced (they only lasted 6 months if that) then so like you said(and no one ever said this to me before) that they may've been ok to set it that way since there was no s/cer @ that time.
the 2nd time(pic) there was a s/cer and maybe the mech(HA!!)set em the way he took em out:dunno:.and the dealer who put these in said nothing except that it was installed wrong.
I was thinking of trying to install these myself:rolleyes: heh i may have been better off:D

Please pm me for more info . i don't mind tellling/talking about anything just don't want to highjack.

[Drock96Marquis]

He says the quite ones go to Lincoln, then next level of noise up to Mercury, then Ford, then Ford racing
Ford = Lincoln = Mercury 8.8" gears, all the same

The FRPP 8.8" gears, however, are not. As Sal mentioned above.

I recently sold off a set of FRPP 8.8" 3.55s in favor of Ford OEM/factory 3.55s. There appeared to be a slight difference in tooth design, as well as the ring gear casting itself.

[Sully008]

I've had my FRPP 4.10s in for a year and a half, no whining or noises whatsoever. Daily driver and highway driver as well.