tring to beef up a 9 in - Pirate4x4.Com : 4x4 and Off-Road Forum

ronnco · 01-19-2011, 05:12 AM

Iv got a 78 bronco on 44 boggers and I'm want to beef up the rear without replacing it. Iv lookd at sum stuff and talkd to sum people bout puting a 40 spline miny spool and axel. Is that all I would need?

ehummelman · 01-19-2011, 07:07 AM

A minispool would not be beefing it up. Full spool or locker, and I don't know if you need to go to 40 spline- 35 ought to be plenty. You'll want to upgrade the pinion support and yoke as well, and if you have a stock case, you want to upgrade that too. You may want to get 3" tubes and a truss as well. No clue what you want this axle to handle, so it's hard to tell what you "need". This is not a simple cheap thing to do if you haven't gotten that point yet.

andy71118 · 01-19-2011, 07:14 AM

Can I ask why you ruled out replacing it with a stronger axle? Replacing it could actually end up being cheaper, and you can end up with a stronger axle. With 44's you're housing is going to flex, so have it trussed. Then you need a nodular center, some sort of carrier whether it's a locker or spool, then you would need axle shafts. It seems like you may be making it harder for yourself by wanting to keep the 9".

ronnco · 01-19-2011, 08:23 AM

Well I'm trin to not spend a ton of money that's whatim trin to fiiguer out is if that would b a easx fix without changing the axel. I'm nout puting much hp to it just have low gears. Iv got one ton axels to put under it. I just like the way its setup now and I hate to lose all that. That's y I wuz askn if it wuz easer to do that.

RedneckBronco · 01-19-2011, 08:27 AM

If you aleready have the one tons i think it would probably end up costing less in the long run to build them up enough to handle the 44's since they are aleready way stronger than the 9 inch from the get go.

andy71118 · 01-19-2011, 08:32 AM

Quote:

Originally Posted by RedneckBronco

If you aleready have the one tons i think it would probably end up costing less in the long run to build them up enough to handle the 44's since they are aleready way stronger than the 9 inch from the get go.

I totally agree. I wish I did this from the begining with my truck. Instead I wasted money building smaller axles, just to build and swap in tons anyway. Go for the one tons from the get go and don't look back. Trust us when we say it will be the cheaper route to take.

ronnco · 01-19-2011, 09:50 AM

thats why i askd. My question should have been is it cheaper too build a 9in or replace it. iv got for sale and havent had a lot of hits on it and getting kinda of wresless and wanting to beef it up. Thanks for the info

ehummelman · 01-20-2011, 07:17 AM

It won't sell for much, they're a dime a dozen. Try some car sites (not 4X4), those guys always want to replace their 8.8, 10 bolt, etc with a 9".

f250rollinon37s · 01-21-2011, 06:51 PM

get a 10.25 to put in the rear. they can be had for free to 200.00. they have 1.5" shafts and are full float, which to me is needed with a tire that big. by the time you get 35 spline axles and a spool / locker and a case to put them in you will get over 800 -1000 easy.

you can get a 10.25, gears, weld the diff and some new 8 lug 15" wheels ( assuming you are running a 15" wheel ) for less than beefing the 9".

svt150j49 · 01-21-2011, 09:27 PM

Quote:

Originally Posted by f250rollinon37s

get a 10.25 to put in the rear. they can be had for free to 200.00. they have 1.5" shafts and are full float, which to me is needed with a tire that big. by the time you get 35 spline axles and a spool / locker and a case to put them in you will get over 800 -1000 easy.

you can get a 10.25, gears, weld the diff and some new 8 lug 15" wheels ( assuming you are running a 15" wheel ) for less than beefing the 9".

x2. been there, done that. i did the whole build a 9" thing. buy a 10.25 or find a free one. that big of a tire is a waist of time on a 9"

brewchief · 01-21-2011, 09:40 PM

If you used a 35 spline spool that fits in the stock case and a set of 35 spline axles you can do it for just over 500$. The stock case will probably not live with your tire size and that will add another 250$ or so plus the better pinion support. Pretty easy to spend 1000$ or more.

10.25, 14 bolt or dana 70 would all be better choices and cheaper, plus they will match up with a front 60.

01-19-2011, 05:12 AM	#1 (permalink)
ronnco Registered User Join Date: Nov 2010 Member # 173029 Location: ga Posts: 3	tring to beef up a 9 in Iv got a 78 bronco on 44 boggers and I'm want to beef up the rear without replacing it. Iv lookd at sum stuff and talkd to sum people bout puting a 40 spline miny spool and axel. Is that all I would need?

01-19-2011, 07:14 AM	#3 (permalink)
andy71118 Registered User Join Date: Nov 2008 Member # 124337 Location: Connecticut Posts: 193	Can I ask why you ruled out replacing it with a stronger axle? Replacing it could actually end up being cheaper, and you can end up with a stronger axle. With 44's you're housing is going to flex, so have it trussed. Then you need a nodular center, some sort of carrier whether it's a locker or spool, then you would need axle shafts. It seems like you may be making it harder for yourself by wanting to keep the 9". __________________ My lug nuts require more torque than your Honda makes.

01-19-2011, 08:27 AM	#5 (permalink)
RedneckBronco Registered User Join Date: Nov 2010 Member # 174206 Posts: 20	If you aleready have the one tons i think it would probably end up costing less in the long run to build them up enough to handle the 44's since they are aleready way stronger than the 9 inch from the get go. __________________ Get Muddy!

01-21-2011, 06:51 PM	#9 (permalink)
f250rollinon37s MASTER TECH Join Date: Oct 2005 Member # 54844 Location: Northern cali Posts: 3,435	get a 10.25 to put in the rear. they can be had for free to 200.00. they have 1.5" shafts and are full float, which to me is needed with a tire that big. by the time you get 35 spline axles and a spool / locker and a case to put them in you will get over 800 -1000 easy. you can get a 10.25, gears, weld the diff and some new 8 lug 15" wheels ( assuming you are running a 15" wheel ) for less than beefing the 9". __________________ BSW Racing, Calrocs Super mods 12 & ? Driver: Aaron Whitehead - Driver: Joe Hutchins Spotter: Adam Kovarik - Spotter: Dustin Knight Crew Cheif: me fuckers build up of the truggy /forum/ford/544813-update-pics.html

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01-19-2011, 07:07 AM	#2 (permalink)
ehummelman Registered User Join Date: Jul 2008 Member # 116337 Posts: 187	A minispool would not be beefing it up. Full spool or locker, and I don't know if you need to go to 40 spline- 35 ought to be plenty. You'll want to upgrade the pinion support and yoke as well, and if you have a stock case, you want to upgrade that too. You may want to get 3" tubes and a truss as well. No clue what you want this axle to handle, so it's hard to tell what you "need". This is not a simple cheap thing to do if you haven't gotten that point yet.

01-19-2011, 08:23 AM	#4 (permalink)
ronnco Registered User Join Date: Nov 2010 Member # 173029 Location: ga Posts: 3	Well I'm trin to not spend a ton of money that's whatim trin to fiiguer out is if that would b a easx fix without changing the axel. I'm nout puting much hp to it just have low gears. Iv got one ton axels to put under it. I just like the way its setup now and I hate to lose all that. That's y I wuz askn if it wuz easer to do that.

01-19-2011, 09:50 AM	#7 (permalink)
ronnco Registered User Join Date: Nov 2010 Member # 173029 Location: ga Posts: 3	thats why i askd. My question should have been is it cheaper too build a 9in or replace it. iv got for sale and havent had a lot of hits on it and getting kinda of wresless and wanting to beef it up. Thanks for the info

01-20-2011, 07:17 AM	#8 (permalink)
ehummelman Registered User Join Date: Jul 2008 Member # 116337 Posts: 187	It won't sell for much, they're a dime a dozen. Try some car sites (not 4X4), those guys always want to replace their 8.8, 10 bolt, etc with a 9".

01-21-2011, 09:40 PM	#11 (permalink)
brewchief Rock God Join Date: Apr 2006 Member # 71185 Location: Michigan Posts: 1,569	If you used a 35 spline spool that fits in the stock case and a set of 35 spline axles you can do it for just over 500$. The stock case will probably not live with your tire size and that will add another 250$ or so plus the better pinion support. Pretty easy to spend 1000$ or more. 10.25, 14 bolt or dana 70 would all be better choices and cheaper, plus they will match up with a front 60.