Completed Project Burns SAS thread

[FROADER]

Trying to climb a ledge that was about 3ft vert then started to level out. RockRanger couldn't make it so Rick tried and on his second attempt he gave it a bump and when it landed...bang, rattle rattle rattle...

 

[Burns]

wow i never thought you could do something like that. do you know why the tubes would twis like that. y wouldnt it just twist the rear springs before it spun the tubes.

 

[FROADER]

I think it's just because the axle only has those stupid little "pocket" weldz.

 

[Burns]

but you have to say that still is quite a bit of pressure we are putting on these parts.

 

[IZwack]

but you have to say that still is quite a bit of pressure we are putting on these parts.

IMO, these welds have always been the weak point of the 8.8. There's been a few articles (i think one here on ExplorerForum and plenty on PBB) about the magical spinning 8.8.

 

[Burns]

well one more plus to goin 9". oh yeah

 

[sn0border88]

a back brace on a 9" isnt for protection, its to add strength to the rear.

 

[DB_1]

wow i never thought you could do something like that. do you know why the tubes would twis like that. y wouldnt it just twist the rear springs before it spun the tubes.

If the springs were soft enough that would happen but most people run an overload and/or add-a-leafs which makes the leaf pack harder to bend so something else has to give and that usually results with a spun diff.

Those trussed 9" housings are most popular with the desert racing crowd since they are jumping their trucks over and over and would most likely end up with a bent housing. For slow and go wheeling, some extra plate steel on the underside going up and in front of the ring gear should be plenty strong IMO.

 

[410Fortune]

hehehehe wow that 8.8 put up with ALOT before it finally went hua Rick? years of service!! A truss would help but for our type of wheeling welding the center section would probably be sufficient the 8.8 is a strong mamma jamma

 

[410Fortune]

it is my understanding that the 8.8 tubes and center section are actually stronger then a factory 9" rear, I am not sure if this includes spinning the tubes or not (strength wise) but the 9" housing is not as strong when it comes to bending/ cracking, etc? Maybe I am wrong but I am pretty sure i've read discussions about this. Basically upgrading to the 9" may have some advantages but some dis advantages as well

 

[Burns]

i plan to do a protection on the back for the rear cover and on the front with the low ujoint

 

[slravene]

none of the 3rd member axles are as stong as their open back counterparts (housing bends wise) since they are all one piece. Take a gander at an 8.8 (or any open-back housing)...you will notice there is quite a bit of beed around the pumpkin and where the tubes enter the diff. Now take a look at a 3rd member axle....not as much beef. Its all just a single cast that forms the shape. Thats why you see alot of trussed Toy 8's and Trussed 9's; because they bend rather easily.

 

[redranger4.0]

none of the 3rd member axles are as stong as their open back counterparts (housing bends wise) since they are all one piece. Take a gander at an 8.8 (or any open-back housing)...you will notice there is quite a bit of beed around the pumpkin and where the tubes enter the diff. Now take a look at a 3rd member axle....not as much beef. Its all just a single cast that forms the shape. Thats why you see alot of trussed Toy 8's and Trussed 9's; because they bend rather easily.

Thats the I reason invested in this

 

[IZwack]

none of the 3rd member axles are as stong as their open back counterparts (housing bends wise) since they are all one piece. Take a gander at an 8.8 (or any open-back housing)...you will notice there is quite a bit of beed around the pumpkin and where the tubes enter the diff. Now take a look at a 3rd member axle....not as much beef. Its all just a single cast that forms the shape. Thats why you see alot of trussed Toy 8's and Trussed 9's; because they bend rather easily.

This is true.

The "one piece" 3rd member design does however have one advantage -- its not cast .. allowing modifications/welding to the center section a piece of cake .. so i guess it pretty much begs to be trussed

I guess redranger4.0 has the best of both worlds -- thick tubes and non-cast center

 

[redranger4.0]

turned out the stock housing i had was bent so it was either hunt down another 76-77 EB 9" housing, or just have one made.

 

[Burns]

thats pretty nice rear end there.

 

[ld50]

Ever figure out your backspacing?
The rims that were on my axles have 3 & 11/16 backspacing, not sure about offset..
They are from somewhere between 73 and 79 f150 so may be similiar

-PS deep pockets huh?

 

[Burns]

Ever figure out your backspacing?
The rims that were on my axles have 3 & 11/16 backspacing, not sure about offset..
They are from somewhere between 73 and 79 f150 so may be similiar

-PS deep pockets huh?

if you ask me that i must have just not see it. sorry about that. my rims are off a 1978 f150. i will try to check on the backspacing some time tomm for you.

 

[ld50]

Naw someone else asked and I went through all the pages again and didn`t see it, thread`s gettin big.

 

[Burns]

ok well tomm i will go check that out. its been snowing all day or i would go out there and check now lol