Welding Axle Perches On

[Stinky]

On my '86 2wd Nissan PU, I want to change the axle ratio and the easiest way to do it is change the axle. I have an axle from a 4x4 PU...totally dif, but it is slightly beefier and is 10% lower.

The perches are totally dif.

Not a big deal, or is it.

My friends say that the perches need to be very precisely welded on....that they have to be welded on just so. I'm thinking that it ain't no big deal, just put them on and weld them on w/a weld that is similar in size and etc as the factory weld (say 1/8" 7018 or a MIG).

BTW, I am gonna tack it w/my 110V Flux core and the take it to a shop for the final beads.

I am not talking about alignment of the perches. I am talking about the metallurgical bond that is used to affix the perches to the axle.

What do you think?

 

[ktmoutfront]

I've just always made sure the welds have good penetration and coverage. Really nothing special.

 

[rpcraft]

You just want to make sure its centered left to right under the vehicle and it has about 3 to 4 degrees of pitch on the pinion (up towards the transmission) so that you don't have drivetrain vibration, but you have to be able to determine what the resting pitch is vs the pitch while the vehicle is normally under power at a steady speed.

Reading here will help. http://www.quickperformance.com/Pinion-Angle-Measurement_ep_45.html Obviously this is going to depend on your use. If you clock off highway miles the more accurate you are the better, but if you are just rock hopping, then you can kind of guestimate it.

 

[sweetk30]

why a new thread for the same question ?

here is the original . https://ck5.com/forums/threads/spring-perch-welding.328822/

 

[Stinky]

I originally posted this from my phone...days later, I went back and cut it and sent it to Hobartwelders weldtalk. I must have done the thing w/this forum. Twas by accident.

Sorry.

 

[Stinky]

Well, I think that I am gonna weld it w/my 110 fluxcore. I don't doubt my ability, I doubted the processes ability.

But, I hear that the housing is only about 1/8" thick and the process doesn't have any thing special to it...other than making sure that the vent is free and clear. I've welded a ton of things that thick...including a flying machine (sand-rail).

Thanks for the tips.

As a side point, the shock brackets bolt on, they are the bottom bracket for the U-bolts.

 

[chulisohombre]

Just has to Be in the same place to line up with the springs and pitch of the pinion as the one you have now. Burn it in good and make sure it has good penetration on the axle tubes. Not too
Bad to do yourself.