31 spline worth it? - 2003-04 Mach 1 Registry Owners Club

04torchedpony · 01-12-2013, 04:23 AM

I'm just curious if a 31 spline upgrade is worth it. My 28's held full bolt ons and a p1@10lbs and slicks while dumping the clutch at 4800-5500rpm. What's the limit on 28 spline axles?

Rice_slayer · 01-12-2013, 10:31 AM

I bust my stock 28 spline axles after 35~ passes, launches from 4-5.8k, bolt on car lol. I would upgrade especially with a power adder, trust me, a tow home from the track isn't cheap :/

04dsgMACHONE · 01-12-2013, 11:35 AM

Quote:

Originally Posted by 04torchedpony

I'm just curious if a 31 spline upgrade is worth it. My 28's held full bolt ons and a p1@10lbs and slicks while dumping the clutch at 4800-5500rpm. What's the limit on 28 spline axles?

Well from what I've read, people have snapped them with less than what you're running. I don't have any personal experience of snapping them, but I'd rather be safe than sorry.

Supra · 01-12-2013, 01:37 PM

The peace of mind is worth it. Its never fun when it breaks.

XSELLR8 · 01-12-2013, 01:51 PM

It's hit or miss with 28 spline axles. Some people snap them early, some later, some not at all. I decided to do 31 spline axles so it isn't a concern (though anything can happen). Upgrading will save you huge on time and convenience. You can also sell your old parts now. You can't sell broken ones.

2camsam · 01-17-2013, 01:18 PM

I've heard slicks are easier on them than drag radials . It took 190 passes on mine to break on Mt drag radials. Then I got towed to my buddies shop.

TKat13 · 01-17-2013, 01:27 PM

I've always wondered if the 28 spline mosers were good enough, they claim 35% stronger? This way I would not have to change anything else. I already put new clutch packs in, bearings and gears 20k miles ago. I would rather spend that other money else where on car if it was not required.

deceptimach · 01-17-2013, 04:03 PM

I sleep at night knowing I spent the money on them.

TKat13 · 01-17-2013, 05:19 PM

Quote:

Originally Posted by deceptimach

I sleep at night knowing I spent the money on them.

This is what I read everywhere, I would love some hard facts.

Rice_slayer · 01-17-2013, 05:59 PM

Here is hard proof

. My car is stock, bolt ons, launched at 5.7k, this was the result.

SHAKN32V · 01-17-2013, 06:58 PM

Quote:

Originally Posted by Rice_slayer

Here is hard proof

. My car is stock, bolt ons, launched at 5.7k, this was the result.

That's exactly what my stock axle looked like.. so I upgraded to a frpp traclok dif 31 spline and moser 31 spline axles with 3 inch ARP wheel studs and never looked back.. now its bulletproof! My stock axle broke off inside the dif where the splines attach on the driver side.

SHAKN32V · 01-17-2013, 07:04 PM

I was on Mickey Thompson 305/35/18s with just 4.10s and bolt ons launching at 3 grand with 16psi in the rear tires.. I figured if anything was gonna happen it was gonna happen then and well it did.. plus having them fr500s didn't help anything cuz they were so heavy with them tires on there. Sold em and went back to stock.. big difference in driveability and the way it put the power down. Ill never go back to another wheel unless its weld prostars

TKat13 · 01-17-2013, 07:09 PM

Quote:

Originally Posted by Rice_slayer

Here is hard proof

. My car is stock, bolt ons, launched at 5.7k, this was the result.

Was that the stock 28 spline or the Moser 28 splines? If it is the Moser 28 splines then you indeed answered my question.

XSELLR8 · 01-17-2013, 08:18 PM

It's not that the higher spline count in itself is the magic here- there is a higher spline count because they are significantly thicker than the stock tooth picks. Is there any danger of hurting anything else when it breaks? What sold me was the fact that the 31 spline shafts weren't much (if any) more expensive than aftermarket 28 spliners. If you're goin to drop the cash for new shafts, drop another $250 for the carrier. If you aren't swapping gears you won't need to set pinion depth or any if that junk. Just toss it in yourself.
http://www.mach1registry.org/forums/...d.php?t=126180

Rice_slayer · 01-17-2013, 09:32 PM

Mine were stock 28 splines, pictured beside it is my Moser 31 splines that went in. I have done 6k launches now with no issues at all.

XSELLR8 · 01-17-2013, 09:50 PM

Quote:

Originally Posted by Rice_slayer

Mine were stock 28 splines, pictured beside it is my Moser 31 splines that went in. I have done 6k launches now with no issues at all.

6K!

Rice_slayer · 01-17-2013, 10:05 PM

Quote:

Originally Posted by XSELLR8

6K!

Haha it's a good feeling! I'm only making 300rwhp right now so it isn't that extreme, my best 60' to date is only a 1.67, have cut a few .68/.69s too. I will probably back down to 5k launches again when I get my procharger on. Here is a video of a 6k launch.
http://www.youtube.com/watch?v=1pYP9naUAZI

XSELLR8 · 01-17-2013, 10:21 PM

Quote:

Originally Posted by Rice_slayer

Haha it's a good feeling! I'm only making 300rwhp right now so it isn't that extreme, my best 60' to date is only a 1.67, have cut a few .68/.69s too. I will probably back down to 5k launches again when I get my procharger on. Here is a video of a 6k launch.
http://www.youtube.com/watch?v=1pYP9naUAZI

Nice run!
I did a 4k rpm launch that shook off my abs exciter ring. I tore it all down and decided to go 31 spline.

Stopsign32v · 01-17-2013, 10:49 PM

Quote:

Originally Posted by XSELLR8

6K!

I've launched at 6,800rpms on 28 spline.

Still going strong too!

http://www.youtube.com/watch?v=QpWN8MDjuRY

XSELLR8 · 01-18-2013, 04:52 AM

Quote:

Originally Posted by Stopsign32v

I've launched at 6,800rpms on 28 spline.

Still going strong too!

http://www.youtube.com/watch?v=QpWN8MDjuRY

Man, just my luck I had a bad experience with the abs exciter. Sweet vid by the way

01-12-2013, 04:23 AM	#1
04torchedpony Boost FTW!!! Join Date: Jan 2012 Location: Greenbrier, AR Posts: 199	31 spline worth it? I'm just curious if a 31 spline upgrade is worth it. My 28's held full bolt ons and a p1@10lbs and slicks while dumping the clutch at 4800-5500rpm. What's the limit on 28 spline axles? __________________ 04 mach- 5.0 stroker fully forged 10.2-1 compression, Arp hardware, 98 cobra cams, return style fuel system, bassani mid lengths, bassani orx, bassani cat back, mgw short throw, 39# injectors, bbk lowering springs, upr lca, tubular k, upr coil overs, promotion t3650, ram supergrip HD, Yukon 31 spline axles and 31 spline dura grip. Best 1000ft- 10.42 @98 with slicks and a bad slipping clutch

01-12-2013, 10:31 AM	#2
Rice_slayer Registered User Join Date: Jun 2011 Location: Regina, Saskatchewan Posts: 483	Re: 31 spline worth it? I bust my stock 28 spline axles after 35~ passes, launches from 4-5.8k, bolt on car lol. I would upgrade especially with a power adder, trust me, a tow home from the track isn't cheap :/ __________________ http://img3.imageshack.us/img3/668/img0584fx.jpg 2003 Ford Mustang Mach 1 Dark Shadow Grey Best 1/4 mile ET to date: 12.22@117.8mph w/ 1.73 60 foot, needs moar suspension! Procharger P1SC, Cobra fuel pumps, Centerforce DF, 39# injectors,Slot style MAF,BBK Longtubes, BBK O/R x, Borla stingers, MM rear LCAs, Tokico Illuminas,J&M rear uppers, MM FLSFC, 4.10 gears, Moser 31 splines, Detriot Truetrac. 410rwhp, 383rwtq on only 6psi.

01-12-2013, 01:37 PM	#4
Supra Registered User Join Date: Jul 2011 Location: Saskatchewan, Canada Posts: 259	Re: 31 spline worth it? The peace of mind is worth it. Its never fun when it breaks. __________________ -2013 DIB Mustang GT - Track pack - Recaro's -2004 Mach 1 - Sold

01-12-2013, 01:51 PM	#5
XSELLR8 Mach-o-holic Join Date: May 2010 Location: La La Land Posts: 1,276	Re: 31 spline worth it? It's hit or miss with 28 spline axles. Some people snap them early, some later, some not at all. I decided to do 31 spline axles so it isn't a concern (though anything can happen). Upgrading will save you huge on time and convenience. You can also sell your old parts now. You can't sell broken ones. __________________ 2003 Mach 1 TR 5 Speed IUP Bolt ons: You name it! 4.10s too 2004 Cobra Screaming Yellow 2.3L Whipple Gear install vid https://www.youtube.com/watch?v=tJrAIDCpbDI Clutch Replacement Vid http://www.youtube.com/watch?v=UFr0Rur_EWc Wideband Install Vid http://www.youtube.com/watch?v=GmL1KBmWyhg

01-17-2013, 01:18 PM	#6
2camsam Registered User Join Date: Jul 2007 Location: Knoxville Posts: 803	Re: 31 spline worth it? I've heard slicks are easier on them than drag radials . It took 190 passes on mine to break on Mt drag radials. Then I got towed to my buddies shop.

01-17-2013, 01:27 PM	#7
TKat13 Mach-T Join Date: Jun 2004 Location: DFW Posts: 2,865	Re: 31 spline worth it? I've always wondered if the 28 spline mosers were good enough, they claim 35% stronger? This way I would not have to change anything else. I already put new clutch packs in, bearings and gears 20k miles ago. I would rather spend that other money else where on car if it was not required. __________________ Darrell Black '04 Mach 1 Track Times (bone-stock w/drs):60 ft - 1.90 \| 1/8 - 8.67 (100 shot,E85,4:10s,Street tire):60 ft - 1.67 \| 1/8 - 7.88 New build - 750rwhp; not track tested (yet) Mods: Build Log Paint&Body Tuned by Manny @ HPP

01-17-2013, 04:03 PM	#8
deceptimach Registered User Join Date: Dec 2010 Location: Grafenwoehr, Germany Posts: 113	Re: 31 spline worth it? I sleep at night knowing I spent the money on them.

01-17-2013, 05:59 PM	#10
Rice_slayer Registered User Join Date: Jun 2011 Location: Regina, Saskatchewan Posts: 483	Re: 31 spline worth it? Here is hard proof . My car is stock, bolt ons, launched at 5.7k, this was the result. __________________ http://img3.imageshack.us/img3/668/img0584fx.jpg 2003 Ford Mustang Mach 1 Dark Shadow Grey Best 1/4 mile ET to date: 12.22@117.8mph w/ 1.73 60 foot, needs moar suspension! Procharger P1SC, Cobra fuel pumps, Centerforce DF, 39# injectors,Slot style MAF,BBK Longtubes, BBK O/R x, Borla stingers, MM rear LCAs, Tokico Illuminas,J&M rear uppers, MM FLSFC, 4.10 gears, Moser 31 splines, Detriot Truetrac. 410rwhp, 383rwtq on only 6psi.

01-17-2013, 07:04 PM	#12
SHAKN32V Registered User Join Date: Jan 2013 Location: Bloomington, indiana Posts: 326	Re: 31 spline worth it? I was on Mickey Thompson 305/35/18s with just 4.10s and bolt ons launching at 3 grand with 16psi in the rear tires.. I figured if anything was gonna happen it was gonna happen then and well it did.. plus having them fr500s didn't help anything cuz they were so heavy with them tires on there. Sold em and went back to stock.. big difference in driveability and the way it put the power down. Ill never go back to another wheel unless its weld prostars

01-17-2013, 08:18 PM	#14
XSELLR8 Mach-o-holic Join Date: May 2010 Location: La La Land Posts: 1,276	Re: 31 spline worth it? It's not that the higher spline count in itself is the magic here- there is a higher spline count because they are significantly thicker than the stock tooth picks. Is there any danger of hurting anything else when it breaks? What sold me was the fact that the 31 spline shafts weren't much (if any) more expensive than aftermarket 28 spliners. If you're goin to drop the cash for new shafts, drop another $250 for the carrier. If you aren't swapping gears you won't need to set pinion depth or any if that junk. Just toss it in yourself. http://www.mach1registry.org/forums/...d.php?t=126180 __________________ 2003 Mach 1 TR 5 Speed IUP Bolt ons: You name it! 4.10s too 2004 Cobra Screaming Yellow 2.3L Whipple Gear install vid https://www.youtube.com/watch?v=tJrAIDCpbDI Clutch Replacement Vid http://www.youtube.com/watch?v=UFr0Rur_EWc Wideband Install Vid http://www.youtube.com/watch?v=GmL1KBmWyhg

01-17-2013, 09:32 PM	#15
Rice_slayer Registered User Join Date: Jun 2011 Location: Regina, Saskatchewan Posts: 483	Re: 31 spline worth it? Mine were stock 28 splines, pictured beside it is my Moser 31 splines that went in. I have done 6k launches now with no issues at all. __________________ http://img3.imageshack.us/img3/668/img0584fx.jpg 2003 Ford Mustang Mach 1 Dark Shadow Grey Best 1/4 mile ET to date: 12.22@117.8mph w/ 1.73 60 foot, needs moar suspension! Procharger P1SC, Cobra fuel pumps, Centerforce DF, 39# injectors,Slot style MAF,BBK Longtubes, BBK O/R x, Borla stingers, MM rear LCAs, Tokico Illuminas,J&M rear uppers, MM FLSFC, 4.10 gears, Moser 31 splines, Detriot Truetrac. 410rwhp, 383rwtq on only 6psi.

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