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 Post subject: Re: My 68 Barracuda
PostPosted: Tue Apr 05, 2022 4:46 pm 
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 13327
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Those look nice John!

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 Post subject: Re: My 68 Barracuda
PostPosted: Tue Apr 05, 2022 5:25 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
Thanks, I think it will turn out nice.

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 Post subject: Re: My 68 Barracuda
PostPosted: Wed Apr 06, 2022 3:52 am 
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Joined: Mon Oct 21, 2002 11:08 am
Posts: 15359
Location: Blacksburg, VA
Car Model:
Dang, very pretty! Can't wait to see the car in person.

Lou

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 Post subject: Re: My 68 Barracuda
PostPosted: Wed Apr 06, 2022 6:55 am 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
Thanks Lou, and yea, me to on getting the car out!

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 Post subject: Re: My 68 Barracuda
PostPosted: Thu Apr 14, 2022 5:12 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
The grill parts are painted, polished and installed.
Like I did on the 83 D150 I like to add a small amount of customization to my vehicles.

I still have all of the OE 68 Barracuda grill and head lamp surround parts, and in doing this conversion none of the OE grill or lamp surround mounting points were modified, so the OE grill and surrounds could be reinstalled easily. That was one of the goals of this project, to be able to take it back to OE if desired. It would not be insurmountable to restore the 67 Dodge Cornet grill back to useable condition in a B body.

Have one more big item to get done, The ring and pinion in the 8.75 is an original Mopar unit. Probably has lot of miles on it and it is just noisy, has a whine.
I have a new 3:55 gear set, minor install kit and a gasket set on order from Dr Diff.
That is next weeks project.


Attachments:
041422 new grill installed 68B.jpg
041422 new grill installed 68B.jpg [ 89.89 KiB | Viewed 658 times ]

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Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8
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 Post subject: Re: My 68 Barracuda
PostPosted: Tue Apr 19, 2022 6:46 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
working on the 8.75
observed a leak at the driver side rear wheel, also wanted to resolve the gear noise, so why not?
Lets get it fixed.


Attachments:
041922 rear axel.jpg
041922 rear axel.jpg [ 61.25 KiB | Viewed 620 times ]
041922 68 B axels.jpg
041922 68 B axels.jpg [ 125.17 KiB | Viewed 620 times ]
041922 diff oil leak.jpg
041922 diff oil leak.jpg [ 85.41 KiB | Viewed 620 times ]

_________________
Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8
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 Post subject: Re: My 68 Barracuda
PostPosted: Wed Apr 20, 2022 6:48 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
The differential is out and the new parts have arrived


Attachments:
042022 742 diff.jpg
042022 742 diff.jpg [ 97.94 KiB | Viewed 593 times ]
042022 742 parts.jpg
042022 742 parts.jpg [ 112.61 KiB | Viewed 593 times ]

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Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8
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 Post subject: Re: My 68 Barracuda
PostPosted: Wed Apr 20, 2022 8:19 pm 
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 13327
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Sweet!

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 Post subject: Re: My 68 Barracuda
PostPosted: Sun Apr 24, 2022 5:02 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
The disassembly is complete,
will put it back together with the new ring and pinion tomorrow.
I plan to re use the bearing sets.


Attachments:
042422 empty case.jpg
042422 empty case.jpg [ 102.35 KiB | Viewed 467 times ]
042422 gear sets.jpg
042422 gear sets.jpg [ 107.24 KiB | Viewed 467 times ]
042422 pinion gears.jpg
042422 pinion gears.jpg [ 124.21 KiB | Viewed 467 times ]

_________________
Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8
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 Post subject: Re: My 68 Barracuda
PostPosted: Thu May 19, 2022 7:09 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
The differential is assembled, plan is to put it back in tomorrow.

I used a few pieces of scrap iron to build a frame to mount the differential housing to my engine rollover. That worked out well.
Later in the process when setting up the back lash I attached a strip of steel to the housing to hold the magnetic dial indicator base.
Worked great to be able to slide the base right in on a tooth with out any fixture adjustments.

Some particulars on the final set up:

The final large bearing shim thickness ended up at .0970, with the OE gear set it was .0950
The pinion bearing shim thickness ended up at .0395, with the OE gear set it was .0510

Torque to turn only the pinion 10 to 11 inch lb
Torque to turn the complete assembly 25 inch lb
Backlash in four places spaced around the ring gear
.0075
.0075
.0008
.0100

Installed new ring gear bolts
For the pinion nut, the FSM specifies 240 FT lbs, Dr Diff says that is wrong and the correct value is 170 Ft lbs.
Installed a new nut and washer and I went with 185 FT lbs and a drop of Red Loctite


Attachments:
05222022 Coast Side Gear Mark.jpg
05222022 Coast Side Gear Mark.jpg [ 85.98 KiB | Viewed 294 times ]
05222022 Drive Side Gear Mark.jpg
05222022 Drive Side Gear Mark.jpg [ 80.61 KiB | Viewed 294 times ]
05222022 Diff Fixture.jpg
05222022 Diff Fixture.jpg [ 111.06 KiB | Viewed 294 times ]

_________________
Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8
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 Post subject: Re: My 68 Barracuda
PostPosted: Fri May 20, 2022 6:13 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
Sure is nice when a plan comes together. I eyeballed the tilt and clocking of the axel housing mounted in the 68 Barracuda and made a platform to hold the assembled 742 differential on my floor jack to match that tilt and angle. Strapped the housing to the platform and rolled it under the car, lifted the differential with the jack, rolled the jack back and BOOM, it was in, it may have taken me more time to type this than to get the differential back in. That was nice.


Attachments:
05202022 Diff on dolly in car.jpg
05202022 Diff on dolly in car.jpg [ 71.79 KiB | Viewed 268 times ]
05202022 Diff on dolly.jpg
05202022 Diff on dolly.jpg [ 88.8 KiB | Viewed 268 times ]
05202022 Diff installed.jpg
05202022 Diff installed.jpg [ 66.62 KiB | Viewed 268 times ]

_________________
Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8
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 Post subject: Re: My 68 Barracuda
PostPosted: Fri May 20, 2022 11:21 pm 
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Board Sponsor & Moderator
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Joined: Thu Oct 17, 2002 7:27 pm
Posts: 13327
Location: Park Forest, Illinoisy
Car Model: 68 Valiant
Sweet! :mrgreen:

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 Post subject: Re: My 68 Barracuda
PostPosted: Wed May 25, 2022 6:08 pm 
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Supercharged

Joined: Wed Sep 17, 2008 6:48 pm
Posts: 3564
Location: Indianapolis
Car Model:
Drove the 68 Barracuda out of the garage yesterday. I had a list of projects that I wanted to get done when I drove it in the garage early last November. The car was running and drivable, the projects were aimed at making the car more of what it can be.

One of the project items that still is not right, when I put the roller rockers on, I also added a B3 valve train geometry kit. The B3 kit raised the rocker arm shaft around .230 which caused the roller rockers to contact the valve cover. I had made modifications to the VC to address the clearance issue, but they were not enough. The rockers were hammering pretty hard against the VC on the initial start. I added a second VC gasket. That stopped the pounding, but the rockers are still close as with my hand on the VC with the engine running I can feel a light tapping.
I believe that I will take the existing VC that I have already modified and section it and weld in a 1/2 in band to raise the top.

The good news is the motor fired up from its 6 month slumber without an issue. I drove the car around the neighborhood and it seems fine.


Attachments:
052422 68B.jpg
052422 68B.jpg [ 122.56 KiB | Viewed 214 times ]
052422 2021-2022 List.jpg
052422 2021-2022 List.jpg [ 97.3 KiB | Viewed 214 times ]

_________________
Doo Ron Ron and the Duke of Earl are friends of mine.....
https://www.youtube.com/watch?v=uX8Nj8ABEI8
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 Post subject: Re: My 68 Barracuda
PostPosted: Wed Jun 01, 2022 9:42 am 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7722
Location: IRWIN PA
Car Model:
They make taller VC's and Valve cover spacers for common engines for that problem. Not so much on the slant... as you know. So you will be building your own.

I bet I could draw one up for the AutoCAD, then have send cut send make a 1/2" Spacer outta Aluminum.

Greg

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 Post subject: Re: My 68 Barracuda
PostPosted: Wed Jun 01, 2022 10:04 am 
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Turbo EFI
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Joined: Tue Nov 23, 2004 6:05 pm
Posts: 1175
Location: Desoto Texas
Car Model: 1972 Dodge Colt
Aussie speed is supposed to have a VC spacer.
I asked about it when looking at their cast cover.
Haven't heard back.
I guess I should go shake that tree again.

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