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Author
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Topic: z-bar style clutch fork question
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V8 Thumper
Gearhead Posts: 2830
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 06-13-2002 09:28 PM
  
I've got a used clutch fork that had an enormous hole blown in it from years of operation with a worn out rod. I welded up the hole and contoured the bowl back into shape... does a clutch rod centering hole belong there? If so, what diamater hole should I drill? I'm may try to look at a repro at a local parts house and then tell them, 'sorry, not interested  ', just wondering if anyone knows for sure, maybe save me a trip 
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H8CHEVY
Gearhead Posts: 256
From: Southern Cali
Registered: Jun 2000
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posted 06-13-2002 09:33 PM
mine just has a little indented section that allows the rod end to sit in nice and firm with the tension on it.. ------------------
"In the wise words I was once told bye Jiggy"
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V8 Thumper
Gearhead Posts: 2830
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 06-13-2002 09:43 PM
quote:
Originally posted by H8CHEVY:
mine just has a little indented section that allows the rod end to sit in nice and firm with the tension on it..
So, I could (solidly) center-punch an indentation for the rod? Is your fork a new/repro? Mine is damn near 40 years old 
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kcode
Gearhead Posts: 2441
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 06-14-2002 12:10 AM
ThumperThe clutch throw out fork should not have a hole, only a radiused indentation, the radius should match the radius on the clutch rod so as the throw out fork moves through is arc, the rod will stay in the indentation. Does that make any sense??? Mike
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V8 Thumper
Gearhead Posts: 2830
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 06-14-2002 12:15 AM
Yes it does, thank you kcode and H8Chevy I've got a new rod on order; once it shows up, I'll cut a radius to match
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Rory McNeil
Gearhead Posts: 1035
From: Surrey, B.C. Canada
Registered: Nov 2000
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posted 06-14-2002 02:12 AM
What year & application do you have? While most Fords have the indentation in the release fork, my 70 428 Mach 1 used a fork with a hole in it, into which a rounded pivot fit. This rounded piece had a hole in it for the adjusting rod to slip inside, & the clutch was adjusted with a couple of nuts, bearing against the shoulder of this piece. This was the big bearing release fork, which was only used on the 427,8,&9 c.i. engines that came with the 1 3/8" big spline toploaders.------------------
78 Fairmont 428 4 speed 10.20@130mph
80 Fairmont 302 5 speed 12.8@105mph
85 Mustang NHRA Stocker under construction, 302 5 speed
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V8 Thumper
Gearhead Posts: 2830
From: Orange, Ca. United States of America
Registered: Dec 2001
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posted 06-14-2002 08:20 AM
Thanks Rory, that's some great info My application isn't quite as radical- '65 coupe, smallblock V8 and a T-10... Judging from the metal 'spread' (fatigue/failure) when I began the repair, I didn't think a hole (or much of one, at least) belonged there originally, that's why I had no reservations welding it up. I think the boys are correct on the early models having only a small centering indedtation, but thanks for sharing the knowledge on those big ones... there's another feather in my cap 
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