Moser 31 spline axles

orangeRcode · October 17th, 2006, 12:32 AM

I have built the rear of my Mach with Moser 31 splines, 31 spline trac lok, 4.10s, and FRPP girdle. I have run ET drags at the track twice. Is it possible to bend an axle with around 300 rwhp? I dyno'd my car last weekend and it had a definite wobble at low speeds on the passenger side. Can I effectively evaluate this by jacking up the car and turning the wheels to look for a wobble? Your thoughts?

1slo5.0 · October 17th, 2006, 12:37 AM

You shouldn't have done any damage to a Moser 31 spline axle at that low of horsepower.

ChrisJ · October 17th, 2006, 01:11 AM

Could it have been a bad axle maybe?

orangeRcode · October 17th, 2006, 01:12 AM

That is what I was thinking. I have been launching at 6000 - 6500 rpms but that was only the last time out. Could it be an axle bearing? Besides a tear down, anyway to diagnois the problem?

orangeRcode · October 17th, 2006, 01:14 AM

Originally Posted by ChrisJ

Could it have been a bad axle maybe?

I suppose it is possible but I have had them on the car for about a year with 4-5 times to the track. This was the 3rd different time on the same dyno and was the first time there was the wobble.

ChrisJ · October 17th, 2006, 01:18 AM

Did you replace the bearings when you put them in?

orangeRcode · October 17th, 2006, 01:20 AM

Originally Posted by ChrisJ

Did you replace the bearings when you put them in?

Yes, all new bearings. Figured as long as you were in there, might as well put new in. The rear had less than 3,000 miles on it when done.

ChrisJ · October 17th, 2006, 01:41 AM

Wow...What did the tuner have to say about it?

orangeRcode · October 17th, 2006, 11:01 AM

Originally Posted by ChrisJ

Wow...What did the tuner have to say about it?

Say about what? I did the work.

The general concensus is I didn't bend the axle. I will investigate this weekend and report back.

ChrisJ · October 17th, 2006, 11:37 AM

I was asking what the tuner thought about your car doing that...

I would take the axle out and send it back...You should not be bending axles...

orangeRcode · October 17th, 2006, 12:28 PM

Originally Posted by ChrisJ

I was asking what the tuner thought about your car doing that...

I would take the axle out and send it back...You should not be bending axles...

He said it happens with high rpm launches with slicks. The funny thing is I haven't noticed it anywhere else. I will see if I can get to the bottom of this on Saturday or Sunday.

matrixpuba · October 17th, 2006, 04:09 PM

a local guy with the 31 spline moser axles had the same problem. its a white saleen with all the bolt ons with slicks. he brnt 1 axle out near the hub

stang fanatic · October 20th, 2006, 09:29 PM

pull the wheel off, and see is the axle stub wobbles...bearings going to make a grinding noise, especially turning left and leak oil. sounds like a rim or tire problem.

ChrisJ · October 21st, 2006, 03:04 AM

Any new info on this?

sleepinggt · February 6th, 2007, 10:47 PM

are your axle tubes welded? could have torqued one a little bit and it's causing excess wear on your bearings

October 17th, 2006, 12:32 AM	#1
orangeRcode Hardcore Enthusiast 11.21@123 -150 shot Join Date: May 2006 Location: Mustang/Yukon, OK Posts: 1,828 iTrader: 1 reviews	Moser 31 spline axles I have built the rear of my Mach with Moser 31 splines, 31 spline trac lok, 4.10s, and FRPP girdle. I have run ET drags at the track twice. Is it possible to bend an axle with around 300 rwhp? I dyno'd my car last weekend and it had a definite wobble at low speeds on the passenger side. Can I effectively evaluate this by jacking up the car and turning the wheels to look for a wobble? Your thoughts? __________________

October 17th, 2006, 12:37 AM	#2
1slo5.0 MM Ninjas! 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: North Fond du Lac, Wisconsin Posts: 11,375 iTrader: 1 reviews	You shouldn't have done any damage to a Moser 31 spline axle at that low of horsepower. __________________ My daily driver has 16 cylinders and 4400hp @ 1000 rpm.... ***1988 Mustang GT - Stock....almost

October 17th, 2006, 01:11 AM	#3
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	Could it have been a bad axle maybe? __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

October 17th, 2006, 01:12 AM	#4
orangeRcode Hardcore Enthusiast 11.21@123 -150 shot Join Date: May 2006 Location: Mustang/Yukon, OK Posts: 1,828 iTrader: 1 reviews	That is what I was thinking. I have been launching at 6000 - 6500 rpms but that was only the last time out. Could it be an axle bearing? Besides a tear down, anyway to diagnois the problem? __________________

October 17th, 2006, 01:18 AM	#6
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	Did you replace the bearings when you put them in? __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

October 17th, 2006, 01:41 AM	#8
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	Wow...What did the tuner have to say about it? __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

October 17th, 2006, 11:37 AM	#10
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	I was asking what the tuner thought about your car doing that... I would take the axle out and send it back...You should not be bending axles... __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

October 17th, 2006, 04:09 PM	#12
matrixpuba Hardcore Enthusiast Join Date: Sep 2006 Location: tennessee Posts: 2,364 iTrader: 0 reviews	a local guy with the 31 spline moser axles had the same problem. its a white saleen with all the bolt ons with slicks. he brnt 1 axle out near the hub __________________

October 20th, 2006, 09:29 PM	#13
stang fanatic Enthusiast Join Date: May 2006 Location: El Paso, Tx Posts: 861 iTrader: 0 reviews	pull the wheel off, and see is the axle stub wobbles...bearings going to make a grinding noise, especially turning left and leak oil. sounds like a rim or tire problem. __________________ "The gods too are fond of a joke." "If I had only known, I would have been a locksmith. "

October 21st, 2006, 03:04 AM	#14
ChrisJ RLY SRS Join Date: Aug 2005 Location: Ft. Meade, MD Posts: 38,220 Blog Entries: 4 iTrader: 10 reviews	Any new info on this? __________________ 2008 Acura TL Type-S - 2008 EB Ford Expedition - 2002 Boosted GT - Sold Facebook Google+

February 6th, 2007, 10:47 PM	#15
sleepinggt Regular Join Date: Dec 2006 Posts: 95 iTrader: 0 reviews	are your axle tubes welded? could have torqued one a little bit and it's causing excess wear on your bearings

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