piniong angle??

[OHEARN.2012]

ok my dana 44 i bought for my sas had perches welded on and i didnt wnat to have to deal with putting new perches on it but i put a level on the perch and leveled it out and the ball joint were 90 degrees to the ground they were tilted forward some im just going to use a shim but idk what angle shim to use?

[Captn. J]

just u need to think what angle u want yr drivehshaft to be ... and move em til where u like it and weld em

[OHEARN.2012]

just u need to think what angle u want yr drivehshaft to be ... and move em til where u like it and weld em

what I'm trying to say is that when the axle is installed in the truck the ball joints won't be straight like their supposed to be and I figured instead of doing new perches I could get a shim and flip it around to turn the pinion angle down

[xjs3667]

you could do that........ but imo just cut and weld perches, if you do shim it and ball joints arnt level, there are a number of things to worry about, I had to learn this the hard way lol It can be very difficult to steer since basically your turning the wheel towards the ground, and it is very stressful on ball joints, steering arms and gear box.

[Kyle]

Better to do it right and reweld em, it may be harder and more of a pain but it'll save ya in the long run IMO. Especially since its on a daily driven vehicle

[OHEARN.2012]

gotta find someone with a welder i dont have one and have never welded cast

[Squirell]

The only cast on that axle is the center section

[OHEARN.2012]

The only cast on that axle is the center section

tubes aint cast?

[OHEARN.2012]

time to strip off all the new paint lol

[Squirell]

nothing besides the center section is cast..tubes are steel and so are the knuckles

[hillbillydeluxe007]

i did a sas to my chevy and u need to have the upper ball joint turned back just a little to make the tires come back to center after a turn... if u make them straight up and down every tiime u turn u will have to turn the wheel back by hand and if u rotate the axle to much forward then u will get a woble......

[Hammerlane]

i did a sas to my chevy and u need to have the upper ball joint turned back just a little to make the tires come back to center after a turn... if u make them straight up and down every tiime u turn u will have to turn the wheel back by hand and if u rotate the axle to much forward then u will get a woble......

Its called "Caster angle"  acts like the front wheels on a shopping cart..
better read up on it, if I remember school (from a long F****** time ago..) you need 2 -4 degree's positive angle, that's forward tilt.

[hillbillydeluxe007]

ya hammerlane is right it is forward i had it backwards. but ether way u cant go by the front drive shaft if u want to go down the road... u will be fighting the wheel the whole time.

[xjs3667]

yea I usually set mine between 0 and 2 degrees and still have to help the wheels come back  if I have the wheels cranked for than 1/2 way, but I personally prefer that.

I have never done this but have pondered the idea..... If you pinon angle is way out of wack, couldn't I just cut axle tubes and reweld for a new pinon angle, that way I can keep the correct caster angle??

sorry to kinda jack your thread 

[OHEARN.2012]

im not going to have much of a probelem with the driveshaft angle this is a high pinion and im not going over 6-8 inches of lift just running 36 inch tires.. so do i have to have a angle locator to do the caster angle if i can get it down now while im gathering parts then that will be nice since im not busy right now

[Kyle]

id just eyeball it to get it around center, cuz more than likely the sas itself will give the axle some pitch forward anyways. but an angle locator would help make sure ur spring perches are on the same plane as eachother. or a level would do the same thing

[xjs3667]

angle gauge would be the best but If you dont have one or are able to get one you could eyeball it lol or get a straight edge and start with balljoints level and keep top balljoint/knuckle against straight edge, rotate axle housing and take measurements off the bottom ball joint/ knuckle untill desired caster is reached.

I have to go through some paper work but I can get you the mathematical formula for doing this, if you want

and I have been through a lot of arguments with ppl about that, It IS possible to convert a measurement IE: inches to degree  as some would say its not possible since inches is a measurement of distance and degree is a measurment of an angle so kinda of like saying how many apples are in a orange, but there wrong

[OHEARN.2012]

angle gauge would be the best but If you dont have one or are able to get one you could eyeball it lol or get a straight edge and start with balljoints level and keep top balljoint/knuckle against straight edge, rotate axle housing and take measurements off the bottom ball joint/ knuckle untill desired caster is reached.

I have to go through some paper work but I can get you the mathematical formula for doing this, if you want

and I have been through a lot of arguments with ppl about that, It IS possible to convert a measurement IE: inches to degree  as some would say its not possible since inches is a measurement of distance and degree is a measurment of an angle so kinda of like saying how many apples are in a orange, but there wrong

U shud help me do this

[old school truck dude]

Im goin cross-eyed just thinkin about it

[Bo Duke]

i did a sas to my chevy and u need to have the upper ball joint turned back just a little to make the tires come back to center after a turn... if u make them straight up and down every tiime u turn u will have to turn the wheel back by hand and if u rotate the axle to much forward then u will get a woble......

Its called "Caster angle"  acts like the front wheels on a shopping cart..
better read up on it, if I remember school (from a long F****** time ago..) you need 2 -4 degree's positive angle, that's forward tilt.

Thats wrong, Positive caster leans the top ball joint towards the rear of the vehicle.