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PostPosted: Thu Sep 09, 2021 9:06 pm 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 186
Location: Helsinki Finland
Car Model: 1966 2D Dart
I have early 170 engine and late model 904. There is a fitment problem with converter hub. As the converter is custom piece (small diameter, high stall) I like to keep as is. So I have onlys choice to ask machinist to made my small register 170 crank to perfect fit.

I have found a machinist to do it.

I am pretty sure that has done before several times. I have calculated there is enough material to do it. Just to the inner hole to 1.81” and add an outer ring for flex plate centering (1.96”/2.16”)

Please advice me to topics where this is discussed before.

(I am overseas. Slant parts are not laying all around. Was a job to catch 170 bottom end which is not at biggest overbore and ”end”. Now I have a good project engine).

_________________
1966 Dodge Dart. 225efi/904/7,25". 15.37s/89MPH @ 1/4 mile.


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PostPosted: Fri Sep 10, 2021 3:23 pm 
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Guru
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Joined: Sat Oct 12, 2002 11:22 am
Posts: 3723
Location: Sonoma, Calif.
Car Model: Many Darts and a Dacuda
Machine the counter-bore out to the larger size and use the early flex plate (small bore size) and everything works fine.
DD
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PostPosted: Fri Sep 10, 2021 4:30 pm 
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Supercharged
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Joined: Sat Nov 27, 2004 8:03 pm
Posts: 7209
Location: IRWIN PA
Car Model:
Awesome mod Doc! Thanks for Sharing.

Greg

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Greg Ondayko
http://www.youtube.com/hyperpack
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PostPosted: Sat Sep 11, 2021 3:03 am 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 186
Location: Helsinki Finland
Car Model: 1966 2D Dart
Thanks!

_________________
1966 Dodge Dart. 225efi/904/7,25". 15.37s/89MPH @ 1/4 mile.


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PostPosted: Sat Sep 18, 2021 8:55 pm 
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TBI Slant 6
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Joined: Tue Aug 19, 2003 3:52 am
Posts: 186
Location: Helsinki Finland
Car Model: 1966 2D Dart
Doctor Dodge wrote:
Machine the counter-bore out to the larger size and use the early flex plate (small bore size) and everything works fine.
DD
Image


One more question. What is the needed size for re-machined counterbore? Is it 1.81" (46,0mm) or 1.815" (46,1mm)?

_________________
1966 Dodge Dart. 225efi/904/7,25". 15.37s/89MPH @ 1/4 mile.


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PostPosted: Mon Sep 20, 2021 5:03 pm 
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Guru
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Joined: Sat Oct 12, 2002 11:22 am
Posts: 3723
Location: Sonoma, Calif.
Car Model: Many Darts and a Dacuda
1 13/16 inches = 1.8125
Best to measure the hub on the torque converter and add .002 for clearance.
DD


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