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Clutch fork question

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javman7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote javman7 Quote  Post ReplyReply Direct Link To This Post Topic: Clutch fork question
    Posted: May/21/2018 at 11:41pm
Hi all. I put a 390 in my rogue and I put the original 4 speed behind it. I'm having a clutch issue. The clutch fork seems to hit the edge of the clutch fork opening in the bell housing, so the pedal doesn't travel as far as it needs too. My rogue is a 1966. Do I need a different clutch fork, or a different bell housing? I'm using the original bell housing to the car. If this sounds confusing I can post a pic tomorrow. I'm guessing that the clutch forks or the bell housings may be difference between 1966 and 1969? I've checked and double checked all the linkage and everything is fine. Thanks for any help.
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PHAT69AMX View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote PHAT69AMX Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 12:06am
Could it maybe be the AMC T10 Clutch Fork Pivot Length ?
Only "aware" of this from the listing in Group 5 of the AMC 1967-72 Illustrated Parts Manual.
Going by the Part Name found in list of numbers at the back of Group 5 Clutch...
There appears to be -> (3) Different AMC T10 -> CLUTCH FORK PIVOT LENGTHS:
 
  5/8"  = part # 320 5362 = 67-69 V8 
  3/4"  = part # 448 7604 = 70-71 V8
1-1/16" = part # 321 3859 = 72-72 V8 (360) (401)
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tomj View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tomj Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 12:45am
i can't speak for the V8's, but even for the sixes there seems to be a lot of throwout forks. i think it's one of those parts the factory changed to make things fit. makes sense i suppose, it's a relatively cheap stamping.

flat or angled (to change throwout 'depth') and also offset, to accommodate pushrods not on-center inline.

here's a pic: http://sr-ix.com/AMC/1961-Rambler-Roadster/transmission/T5research/images/various%20clutch%20forks.jpg


1960 Rambler Super two-door wagon, OHV auto
1961 Roadster American, 195.6 OHV, T5
http://www.ramblerLore.com

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javman7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote javman7 Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 11:31am
I wonder if 1966 had an oddball clutch fork or bellhousing for the 290? Looking at parts from some vendors everything seems to be 67 and up. Nothing for 66. 
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6PakBee View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 6PakBee Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 11:48am
I'm confused.  From your description you started out with a 1966 Rogue 4-speed with a 290 and did nothing but replace the 290 with the 390?
Roger Gazur
1969 'B' Scheme SC/Rambler
1970 RWB 4-spd Machine
1970 Sonic Silver auto AMX

All project cars.

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mmaher94087 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mmaher94087 Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 12:00pm
Did the ball bearing fall off the pivot stud in the bellhousing when the tranny was put in?
Mike
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javman7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote javman7 Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 1:50pm
Originally posted by 6PakBee 6PakBee wrote:

I'm confused.  From your description you started out with a 1966 Rogue 4-speed with a 290 and did nothing but replace the 290 with the 390?

That is correct.
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javman7 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote javman7 Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 1:52pm
Originally posted by mmaher94087 mmaher94087 wrote:

Did the ball bearing fall off the pivot stud in the bellhousing when the tranny was put in?

Bearing still there
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Post Options Post Options   Thanks (0) Thanks(0)   Quote rodhhrod Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 3:03pm
Sounds like your clutch fork is the off set version that I have run across. That is what I call it, original would dead center, where the clutch adj. rod pivots into and the center of the other end where there the throwout bearing rides would be a straight line. Just confused myself LOL LOL, 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Steve_P Quote  Post ReplyReply Direct Link To This Post Posted: May/22/2018 at 3:12pm
There are different height pivot standoffs that go inside the bellhousing as described above. Did you change the throwout bearing? Maybe it's shorter than what you had before? You can try to shim the standoff and see if that helps- maybe you need a taller one.
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