Bellhousing alignment...

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So, 0 at 12 o'clock and +44 at 6 o'clock?

That would mean the bell has to move .022" up I think. Makes sense with the negative number too, the original negative numbers shows the bell is closer to the gauge at that point, so it was sitting low. Re-zeroed so the zero is at the smallest distance between the gauge and the bell, it shows the bottom of the bell as being further away from the fixed radius, so again, the bell is sitting low.

At least if my thinking is correct...
So you say it has to go up now?

Oh jeeze y'all got me spinning here.

I have know idea. :O
 
So you say it has to go up now?

Oh jeeze y'all got me spinning here.

I have know idea. :O

I'm sorry, I got it exactly backward. I was thinking of the "negative" numbers as being a smaller distance, but that's not how the dial indicator reads.

It needs to go down as the others said. Sorry for the confusion!
 
………….

I have know idea. :O

In your video it appears you "zeroed" at the top of the bell.
As you roll from "0" to ".044", does the indicator rod tip move closer to the crank or further away?

Also, moving the bell .021" may involve some bolt holes to be massaged.
 
In your video it appears you "zeroed" at the top of the bell.
As you roll from "0" to ".044", does the indicator rod tip move closer to the crank or further away?

Also, moving the bell .021" may involve some bolt holes to be massaged.

Closer. Dial gauges read in the positive direction on compression. So it’s .044” closer to gauge.
 
I installed the .021 offset dowel pins, Like mentioned, I had to slightly file the holes on the bell housing for the bolts. No big deal. This is my measurement now.
0 on top
0 on the bottom
+5 on the left
-5 on the right

I think I need to move the bell .005 to the right, or 3 O-clock position, correct? Because it's .010 off?

IMG-4509.jpg
 
Okay I made one more adjustment. I moved the dowel pins ever so slightly.

I took pics of each reading so you can see. 0 on the bottom:

IMG-4510.jpg


-.001 on the right:

IMG-4511.jpg


0 on the top:

IMG-4513.jpg


+.002 on the left:

IMG-4514.jpg


This puts me only .003" off side to side. I think I'm gonna leave it!!!
 
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What about being parallel with the block, are going to take that measurement. The reason I am asking , is because I am take these same measurement. My bellhousing bore to Center of crank was off 7000, divided by 2, should be within spec. When measured face of block to face of bellhousing I am out by also 10000. Not sure if I just shim low side, or is there other solutions. This is with scatter shield attached. With shield it was 7000 out. Think the maximum allowance is 2000.

3C2BC709-C7F4-4C8C-ADC3-CEDE386A1CDA.jpeg


91039FAA-EE0D-4E53-9CCA-C33B3A312FD0.jpeg
 
Well I may... but if it's out a little, what am I going to do about it? Not much I can do. I'm certainly not going to take the bell to a machine shop and have them machine the corrections into it. What do ya do? Stack a couple feeler gauges on the side that's out?
I don't know... I haven't found the answer on how they do that yet.

Maybe I'll look.
 
Ok, I was thinking about removing the paint on the high side of the behousing. Maybe the power coat is thicker on that side, or the paint thickness could be the difference.
 
Ok, I was thinking about removing the paint on the high side of the behousing. Maybe the power coat is thicker on that side, or the paint thickness could be the difference.
You might be right on that. You have a point. I just checked mine... it's off a little bit, .010 on one side and .012 on the other. But I think we cut these numbers in half though. I don't know.
 
You might be right on that. You have a point. I just checked mine... it's off a little bit, .010 on one side and .012 on the other. But I think we cut these numbers in half though. I don't know.
My understanding is you can be .002 out of spec. Don’t think you cut these ones in half, but you might just be in spec .002 by your numbers. New to this, so not really sure, guess we will figure it out together. Lol
 
My understanding is you can be .002 out of spec. Don’t think you cut these ones in half, but you might just be in spec .002 by your numbers. New to this, so not really sure, guess we will figure it out together. Lol
I mistated. You can see here in my pic on the top I start out at 0 and bottom I'm at +10.
Left side I'm +4 and on the right I'm +9. I don't know what to do with those numbers...

Would I have to have the block plate machined?

IMG-4525.jpg
 
You would have to ask someone with some experience on this subject. Have you tried measuring it without the blocking plate. Then maybe you can see if there are any differences between the two.
 
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