Daverods project 66

[daverod]

Originally Posted by joe231

Hard to tell by the pics, but it looks like the rear diff is shifted to the passenger side

It is.

[daverod]

I welded the tabs on by measureing from the diff housing and the flange ends where it hooks to the wheel. It's got to be normal. I hope? I just don't know for sure? It's a 73 rear end. The axle is sitting straight. I measured from holes in the frame and from the stuff I bolted on.

[daverod]

Most times when you do an engine swap, the engine will be offset to the passenger side by some amount. . . the amount depending on the size of the replacement engine. Most people don't realize that many factory engines are also offset. Another thing people don't realize is that the pinion center line in hardly ever on the center line of the frame. They, also are offset to the passenger side. It doesn't matter that the two U-joints are not on the same centerline from the front of the frame to the back (my engine is set right 2" and the pinion is 1-1/2" right.) It only matters that their individual centerlines are parallel.. Answered my own question I think. Just freaked me out for a few.

[MacAttack]

Originally Posted by daverod

It doesn't matter that the two U-joints are not on the same centerline from the front of the frame to the back (my engine is set right 2" and the pinion is 1-1/2" right.) It only matters that their individual centerlines are parallel..

Exactly. Didn't somebody post an example of the geometry recently?

[joe231]

Originally Posted by daverod

It is.

I'm not referring to the center section, but the whole diff. Did you measure from the backing plates to the frame on each side?

and I totally agree with the factory off-set thing,
guess I'm not sure what exactly you are asking.
the off set would also aid in the u-joints being properly lubricated through-out suspension travel.

[MacAttack]

http://jniolon.clubfte.com/driveline...nephasing.html



Mac.

[Strodder]

Originally Posted by MacAttack

http://jniolon.clubfte.com/driveline...nephasing.html
Mac.

Good find Mac.

[daverod]

Originally Posted by joe231

I'm not referring to the center section, but the whole diff. Did you measure from the backing plates to the frame on each side?

and I totally agree with the factory off-set thing,
guess I'm not sure what exactly you are asking.
the off set would also aid in the u-joints being properly lubricated through-out suspension travel.

The diff. is centered. I guess I was just suprised the drive line does'nt come out of the center of the diff. It comes out off to one side. I just thought it would be centered. Now I know better.

[watahyahknow]

de diffhousing usually isnt simmetric cause the stuff inside is too the side too

did you measure from the centre of the diff or from the ends of the axle

they might've done it to give more room to the driverseat wish isnt as strainge as it sounds

[joe231]

Ok, now I see that you were quoting......geez talk about hard to follow

[MacAttack]

Originally Posted by joe231

Ok, now I see that you were quoting......geez talk about hard to follow

Joe and his picture fixation.

[daverod]

Originally Posted by joe231

Ok, now I see that you were quoting......geez talk about hard to follow

Oh ya I forgot these" " I could'nt get the picture to copy. Sorry for being a plagiarist

[joe231]

cool, guess i was having a blond moment

[MacAttack]

Originally Posted by joe231

cool, guess i was having a blond moment

Mac.

[watahyahknow]

another thing about having one rebuild is that you can have them make it a little stronger
i agree with tiggamonster that you dont know wat a tranny from a junkyard been trough it might just be that the rebuild one on an exchange basis aspecially a 3 speed wont differ so mush with a yard one

[MacAttack]

Yeah - bite the bullet and rebuilt the tranny with heavier stuff inside - then you can tromp on it without worrying.

On Ron's description - I kind of get it.

3 degrees maximum drive-line angle, I'm assuming - in any plane.

Tail shaft of transmission to pinion of rear end. Piece of string from centerline of each component - from one to the other: Maximum angle can't exceed 3 degrees.

These components must point directly (parallel) down the centerline of the vehicle however even if they're offset - if they don't, that will create a situation that increases possible vibration.

Mac.

[padresag]

sorry, the driveshaft can run at a greater angle. the 0-3 degree variance is the alignment between the centreline of the engine and pinion or in other words the variance of the parallel lines
eg. look at the difference in d/shaft angle between a 4 x 4 and a 2 wheel dr. quite a difference. the alignment of the eng and pinion between both remain the same
ron

[MacAttack]

Ah, now I get it - in the vertical more than 3 degrees is okay.

[padresag]

yes and it can be offset to the side at the same time, as in the pinion being offset to one side. the ujoints should be sync also with one another for it to work properly.
the same if you have bag suspension and you can raise and lower the car at a whim. the d/shaft compensates through the ujoints
simple things can be quite complex at times even if the same theory has been used now for over 100 years
ron

[ruffrida2005]

If you cant get it to clear the mount, take the mount out.

[daverod]

Originally Posted by ruffrida2005

If you cant get it to clear the mount, take the mount out.

I guess its not the mount it the cross member and its studded in not bolted. That would be to easy.

[jgh64pkup]

take out the crossmember i think thats what ruffrida was saying
just get an air chisel and pop the rivets off then replace them with grade 8 bolts

[watahyahknow]

eeehmm maibe loosen the cab and raise it of the mounts a little

[daverod]

Originally Posted by watahyahknow

eeehmm maibe loosen the cab and raise it of the mounts a little

I was thinking that too.We'll see I think I just have to turn it just right.

[ruffrida2005]

Dave while you have a chance now I would take it out like Gage said and put grade 8 bolts back in it. I would do that to every crossmember. Makes it a lot easier to work on when you need to. Just make sure you use loctite and lock washers.