JB Conversion output on short shaft D300 - Pirate4x4.Com : 4x4 and Off-Road Forum

CJ4U2NV · 02-25-2007, 07:44 AM

I'm looking at the JB web site and it says the HD 32 spline output shaft is not compatible with short shaft D300's. Is this because it just won't work/fit, or is it because it will screwup the driveshaft travel?

I have a short shaft D300 and want to put the HD front and rear outputs in it (along with 4:1 and clock kit) and when it's done I'll be getting a woods CV, plus it's going in a CJ that currently has a long shaft output anyways.

Ironically I've emailed JB on this and have gotten no response.

TIA

Grnscru · 02-25-2007, 09:23 AM

I read the other day while doing some research on the short shaft D300 that the bolt pattern on the tail cone is different between the short shaft and long shaft D300's. I have no first hand knowledge of this fact, but it may give you something elese to look into or somethign to be able to compare your D300 to the long shaft version in the CJ.

CJ4U2NV · 02-25-2007, 06:18 PM

i just heard back from JB and you're right, the bolt patterns are different.

fratis · 02-26-2007, 02:00 AM

i did read a thread on pirate of someone who made it work though.

bjb · 02-26-2007, 01:10 PM

Advance adapters makes a short output kit.

CJ4U2NV · 02-26-2007, 02:44 PM

yeah but it's like $100 more than the normal one. i've fortunately found someone with a long shaft case that wants a short shaft case, so we're trading.

monkeyevil · 04-25-2008, 08:36 PM

TTT on this one.

I have heard of people swapping long tailcones and outputs on short 300 by drilling and tapping the one tailcone hole that is off.

Why couldn't this be done on with the 32 spline kit? I really want to go with the JB conversions over the AA.

monkeyevil · 04-25-2008, 08:43 PM

This post answered my question on the differences. I assume that the short case doesn't have a flat machined area for this bolt.

02-25-2007, 07:44 AM	#1 (permalink)
CJ4U2NV Registered User Join Date: Jun 2004 Member # 32034 Location: Free Clinic Posts: 353	JB Conversion output on short shaft D300 I'm looking at the JB web site and it says the HD 32 spline output shaft is not compatible with short shaft D300's. Is this because it just won't work/fit, or is it because it will screwup the driveshaft travel? I have a short shaft D300 and want to put the HD front and rear outputs in it (along with 4:1 and clock kit) and when it's done I'll be getting a woods CV, plus it's going in a CJ that currently has a long shaft output anyways. Ironically I've emailed JB on this and have gotten no response. TIA

02-25-2007, 09:23 AM	#2 (permalink)
Grnscru Registered User Join Date: Sep 2000 Member # 1763 Location: King George, VA Posts: 731	I read the other day while doing some research on the short shaft D300 that the bolt pattern on the tail cone is different between the short shaft and long shaft D300's. I have no first hand knowledge of this fact, but it may give you something elese to look into or somethign to be able to compare your D300 to the long shaft version in the CJ. __________________ 97 TJ - 5.13's, 9" Detroit, HP44 ARB, 36" TSL's 06 F350 - Towing Duties

04-25-2008, 08:36 PM	#7 (permalink)
monkeyevil Registered User Join Date: Nov 2001 Member # 7978 Location: Kalamazoo, MI Posts: 1,038	TTT on this one. I have heard of people swapping long tailcones and outputs on short 300 by drilling and tapping the one tailcone hole that is off. Why couldn't this be done on with the 32 spline kit? I really want to go with the JB conversions over the AA. __________________ [URL="http://www.jcroffroad.com"]http://www.jcroffroad.com[/URL] [QUOTE=welndmn;10381954]You should build your rig so the weak link is traction :) I run slugs myself.[/QUOTE]

04-25-2008, 08:43 PM	#8 (permalink)
monkeyevil Registered User Join Date: Nov 2001 Member # 7978 Location: Kalamazoo, MI Posts: 1,038	This post answered my question on the differences. I assume that the short case doesn't have a flat machined area for this bolt. __________________ [URL="http://www.jcroffroad.com"]http://www.jcroffroad.com[/URL] [QUOTE=welndmn;10381954]You should build your rig so the weak link is traction :) I run slugs myself.[/QUOTE]

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02-25-2007, 06:18 PM	#3 (permalink)
CJ4U2NV Registered User Join Date: Jun 2004 Member # 32034 Location: Free Clinic Posts: 353	i just heard back from JB and you're right, the bolt patterns are different.

02-26-2007, 02:00 AM	#4 (permalink)
fratis Registered User Join Date: Feb 2005 Member # 42446 Location: North Shore Oahu Posts: 108	i did read a thread on pirate of someone who made it work though.

02-26-2007, 01:10 PM	#5 (permalink)
bjb Registered User Join Date: Nov 2005 Member # 56602 Location: Sacramento/Elk Grove/Sloughouse Posts: 983	Advance adapters makes a short output kit.

02-26-2007, 02:44 PM	#6 (permalink)
CJ4U2NV Registered User Join Date: Jun 2004 Member # 32034 Location: Free Clinic Posts: 353	yeah but it's like $100 more than the normal one. i've fortunately found someone with a long shaft case that wants a short shaft case, so we're trading.