Print Page | Close Window

Need clutch fork.

Printed From: West Coast Fieros
Category: Technical Topics Forum
Forum Name: Technical Questions and Discussions
Forum Description: Got a technical question about your fiero? ask it here.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=1579
Printed Date: 27 November 2024 at 12:54am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com


Topic: Need clutch fork.
Posted By: Patrick
Subject: Need clutch fork.
Date Posted: 26 October 2009 at 9:12pm

One of my "project" Fieros is an ‘84 SE 4-speed with aero nose and trim that I had bought five years ago knowing it had clutch problems. It’s been sitting in my yard feeling sorry for itself ever since. I finally got fed up and started working on it a month or so ago as reported http://www.westcoastfieros.com/forum/forum_posts.asp?TID=1533&KW=patrick - Here , http://www.westcoastfieros.com/forum/forum_posts.asp?TID=1512&KW=patrick - Here , and http://www.westcoastfieros.com/forum/forum_posts.asp?TID=1535&KW=patrick - Here .

Anyway, I needed to drop the cradle and Clynt has been kind enough to let me use the hoist at his place. He also offers advice as required.  So we got the tranny off today and discovered that the clutch fork is toast. Very very similar to what Dave reported finding when he took a look at Nigel's Fiero as reported http://www.westcoastfieros.com/forum/forum_posts.asp?TID=1568&PN=1 - Here .

Shot of my '84 with half it's guts removed.

 

Wrecked clutch fork with the broken piece sitting at the bottom.

 

Back of engine and clutch.

 

Closer shot of clutch.

I need to now pull off the pressure plate and inspect the condition of the clutch. If anyone can see in these pictures why the clutch fork might've broken the way it did, please let me know.

And if anyone has a clutch fork for a 4-speed Muncie transmission that they can sell, please give me a yell.

(By the way, if anyone knows for sure if a clutch fork from a 5-speed Isuzu transmission would work or not work with this tranny, please let me know that as well.)

 




Replies:
Posted By: Dawg
Date Posted: 27 October 2009 at 11:52am
It sure looks like the throwout bearing was rubbing on the pressure plate fingers.  This means it was not spinning nicely.  Over time, this would cause the fork to erode away.

Seems like a common problem eh?


-------------
You dream it up....I'll make it


Posted By: garrym
Date Posted: 27 October 2009 at 12:37pm
you can have my transmission and clutch for 150 :)


Posted By: Patrick
Date Posted: 27 October 2009 at 7:05pm

Garry, I'll give you a phone call. Maybe we can work something out.  

Just got back from working on the car all day at Clynt's place. Need to eat first before making any calls or reporting any progress.

 



Posted By: Capt Fiero
Date Posted: 27 October 2009 at 9:48pm

Patrick please note that, that is NOT an 84 trans.   Its an 85-86.5   3.65 ratio 4spd.    Used in the V6 cars.  Don't worry its fine to use in that car and any 4spd will adapt to it.

        I can tell from the casing pics.



-------------
Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: Capt Fiero
Date Posted: 27 October 2009 at 9:55pm

Note the area around the CV shaft hole, your's look like spider web bracing lines.   This is my old 4spd, it has a smooth casing around the CV shaft hole.  Mine was 84 trans that I had in the nitrous V6, notice the huge crack that follows the base.  Under load that crack opened up to nearly a 1/2 inch wide dropping all the fluid onto the ground in a matter of seconds.



-------------
Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: Patrick
Date Posted: 28 October 2009 at 12:31pm

Does anyone have a clutch fork they can sell?

There must be a few blown up 4-speed trannys out there with a perfectly good clutch fork sitting in them.

They're available brand new on eBay ( http://cgi.ebay.com/ebaymotors/Pontiac-Fiero-Phoenix-Sunbird-Clutch-Fork-14024930-NOS_W0QQitemZ360194195805QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item53dd3f415d - Here ) for $9.95 (plus $10.35 for USPS shipping), but I'm sure Clynt would like my Fiero out of his yard sooner rather than later.

So please, let me know if you have a clutch fork you can part with. I will reimburse you. Clynt will thank you.

Originally posted by Dawg Dawg wrote:

Seems like a common problem eh?

Unfortunately, yes. I found this thread http://www.fiero.nl/forum/Forum1/HTML/061892.html - Here  at Pennock's where a fella with another '84 had exactly the same problem with a broken clutch fork.

 



Posted By: ARTIC-1
Date Posted: 28 October 2009 at 5:24pm
theres 2-84/85 @ pickaprt in Chilliwack.motors/trany are still complt,both
with 4 speeds,CLUTCH FORK      $7.95
http://www.pickapart.ca/price_list.php
hope this helps

-------------
SNOW MAN

87-GT/AUTO-2.8_ WHITE

88-TTop/ Duke-2.5. RED


Posted By: Patrick
Date Posted: 28 October 2009 at 10:38pm

Snow Man, thanks for the suggestion.

It's great that I at least have another option, but keeping in mind it's a 200 km round trip from Vancouver to Chilliwack, I'm hoping I'm able to acquire a clutch fork a little closer to home.

The ironic thing about all this is that I actually have all the parts I need right in my own back yard! I have an '84 Fiero parts car here with a fully functional 4-speed tranny. The car isn't driveable though (cracked block) and I have no practical way of pulling the tranny here.  That's why the Fiero I'm currently working on is up at Clynt's place, as I'm making use of his hoist.

Argh, this is frustrating...

 



Posted By: Patrick
Date Posted: 29 October 2009 at 11:50am

The more I think about it, the more I think I should get an engine hoist and drop the cradle on my parts car. It'll be an ugly job as the car is out in the open (in all the rain ) in a corner of my backyard, but at least I wouldn't have to worry about putting the parts car all back together again afterwards.

I can just transfer the entire clutch/transmission assembly over from one car to the other. Would've been a lot better to have been doing this in July though.

I just hope Clynt's a patient guy and doesn't mind my disassembled Fiero up at his place "hanging" around for another week or so.

 



Posted By: Car-2-Lo
Date Posted: 29 October 2009 at 1:17pm
Well, nows your chance to slap in a 4.9, Clynt's a master at that ?



Posted By: Patrick
Date Posted: 30 October 2009 at 12:15am

Originally posted by Car-2-Lo Car-2-Lo wrote:

Well, nows your chance to slap in a 4.9

Yeah, I'd consider it if this Fiero was an '87 GT with a Getrag 5-speed.  



Posted By: Patrick
Date Posted: 05 November 2009 at 10:12pm

I haven't taken any pictures of my progress recently, but I ended up buying an http://www.westcoastfieros.com/forum/forum_posts.asp?TID=1492&PN=1 - Isuzu 5-speed to put in place of the Muncie 4-speed. That entails changing the clutch and the slave and the shifter and the shift cables and the backup light switch wiring... but hey, why do a simple job when it can be complicated instead?

Anyway, I got the 5-speed bolted up to the engine today. Still lots to do before this Fiero is driveable, but it's going well.

 



Posted By: Patrick
Date Posted: 05 January 2010 at 9:42pm

So Dave, recognize anything in this picture?

I can't believe where the time's gone since I last posted in this thread.

Clynt's been very patient with me the last couple of months as I've been s-l-o-w-l-y working on the car in the under-cover area in his backyard. It's great having something to keep the rain off. It was a little cool though a few weeks ago!

The 5-spd tranny is in as well as the 5-spd shifter and cables. Bent clutch pedal was replaced, as were the clutch master and slave cylinders. 

Rear brakes calipers and hoses also had to be replaced, as did the master brake cylinder and combination valve.

The timing cover was also removed to bang out a dent that was rubbing lightly on the timing gear (but rubbing hard enough to create quite a whine).

The image above is a "hybrid" exhaust system made up from the original downpipe from the '84 duke mated to the muffler and twin tail pipes originally from Dave's old '85 GT. Thanks to Clynt for welding it up for me.  I wanted to put dual-exhaust on this '84 as the rear bumper had been replaced by the previous owner with one from a GT (twin exhaust cut-outs). It looked very odd with the stock single exhaust.

In kind of an oddball repair (as I don't recall reading much about anyone else trying this), Clynt also helped me rebuild the duke's dogbone. One of the two rubber bushings was shot, but the other was fine. I had a second dogbone in the same condition. Using a homemade tool that Clynt had originally created to remove cradle bushings, we swapped over a good bushing from one dogbone to the other (replacing the previously removed worn out bushing). A little heat from a torch aided in the process. Worked out very well.

So tomorrow's the big day... starting it up for the first time since all this began. Hopefully no oil or water leaks, etc.

 



Posted By: Capt Fiero
Date Posted: 05 January 2010 at 10:08pm

Yep that red paint is the dead give away for my original 85GT exhaust, the red paint was over spray from touching up the red sway bar I had on it.

  Congrats on finally getting this all together.   The 5spd Dukes are great zip around town cars.  I am sure you will have a blast in it.



-------------
Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: Patrick
Date Posted: 06 January 2010 at 6:31pm

Woohoo.... success!

I finally got everything necessary back together to take a test drive and I had a fun time tearing around Clynt's neighborhood. The little '84 felt great. The 5-spd tranny/clutch/shifter are real smooth. I couldn't get too crazy as the car still has no nose or rear bumper or plates on it , but I drove it enough to get a sense of how everything worked.

And the dual-exhaust on the 4-banger sounds pretty good!

Although I've had this car for more than five years, this is the first time I've EVER driven it. (It was undriveable and therefore towed to my place when I bought it all those years ago.) I'm quite pleased.

 



Posted By: Colby
Date Posted: 07 January 2010 at 12:09pm
Happy new year Patrick, and congrats on getting it drivable again. 


Posted By: CFoss
Date Posted: 07 January 2010 at 3:25pm
If anyone has this problem again (Like I did), I found I could reinforce the clutch fork by welding in triangular shaped pieces between the horizontal and vertical pieces of the fork...in my case it was the horizontal to vertical joint which failed (This is the stressed area).

Chay


-------------
86 SE 3.4


Posted By: Patrick
Date Posted: 07 January 2010 at 7:20pm

Originally posted by Cheese Cheese wrote:

Happy new year Patrick, and congrats on getting it drivable again.

Thanks Colby. Getting your tranny certainly helped.

Originally posted by CFoss CFoss wrote:

I found I could reinforce the clutch fork...

Chay, I assume this is this something that needs to be done before the fork breaks?

 



Posted By: Patrick
Date Posted: 07 January 2010 at 7:24pm

I got the '84 home today. Still lots of little things to do to it, but at least it now runs and drives just fine.

Special thanks to Clynt for the use of his hoist and a covered work area for the last couple of months!

 



Posted By: Capt Fiero
Date Posted: 07 January 2010 at 8:12pm
Dawg here on the forum had suggested just such a mod to increase the strength of all clutch forks before re-install into a car. It might be a good idea for anyone doing a clutch job to take it to him for re-enforcement before re-install in a car.

-------------
Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: CFoss
Date Posted: 07 January 2010 at 9:36pm
I did mine after the clutch fork broke. It was in pieces, not disinegrated, so I welded the pieces back together, ground it back to a good looking part, then added the strength to complete it.

But, if you had a good one, adding the pieces would be easier. You just have to make sure they don't interfere with the tips of the clutch fork which do the contacting. I remember welding the reinforcements on, then grinding to fit.

Chay


-------------
86 SE 3.4


Posted By: Patrick
Date Posted: 07 January 2010 at 9:44pm

Just to be clear here, are you guys referring to reinforcing both Muncie and Isuzu clutch forks, or just the Muncie forks?

 



Posted By: Capt Fiero
Date Posted: 07 January 2010 at 11:35pm
Yes it would be good for both.  But don't worry Patrick, I have only ever heard of one Isuzu with a bad fork, all the rest have been 4spd cars.

-------------
Capt Fiero
88 Fiero GT 5spd V6
Eight Fifty Seven GT V8 5spd.


Posted By: Patrick
Date Posted: 07 January 2010 at 11:47pm

Originally posted by Capt Fiero Capt Fiero wrote:

I have only ever heard of one Isuzu with a bad fork, all the rest have been 4spd cars.

That's what I gather from Pennock's, that the problem clutch forks are on the 4-spd Muncies. Not sure about the 5-spd (Muncie) Getrags.



Posted By: Dr.Fiero
Date Posted: 13 January 2010 at 1:30pm
Was just doing some poking around, and found a cross for this pesky fork.  It's still available NEW from Lordco!  No more panicking if you break one (well, other than the 12+hr job to replace it).

Anyhow, if you ask for a Pioneer #CF-106 it shows up.  Yet, I can't find it on the on-line Lordco catalog....   ????

About $60 at this time.



Posted By: Patrick
Date Posted: 13 January 2010 at 2:16pm

Originally posted by Dr.Fiero Dr.Fiero wrote:

Was just doing some poking around, and found a cross for this pesky fork.  It's still available NEW from Lordco!

About $60 at this time.

That's great John, for anyone who might need a clutch fork immediately. Keep in mind though that they're available on eBay for a lot less (as reported earlier in this thread).

Originally posted by Patrick Patrick wrote:

They're available brand new on eBay ( http://cgi.ebay.com/ebaymotors/Pontiac-Fiero-Phoenix-Sunbird-Clutch-Fork-14024930-NOS_W0QQitemZ360194195805QQcmdZViewItemQQptZMotors_Car_Truck_Parts_Accessories?hash=item53dd3f415d - Here ) for $9.95 (plus $10.35 for USPS shipping)

 



Posted By: Dr.Fiero
Date Posted: 13 January 2010 at 4:41pm
Yup - but I tell ya - if your car is up on the hoist at Mr.Clutch or somewhere...  you go ahead and tell them to leave it there for 2 weeks while you wait for your shipment to clear customs....  



Posted By: Patrick
Date Posted: 13 January 2010 at 11:58pm

Originally posted by Dr.Fiero Dr.Fiero wrote:

Yup - but I tell ya - if your car is up on the hoist at Mr.Clutch or somewhere...  you go ahead and tell them to leave it there for 2 weeks while you wait for your shipment to clear customs....  

Heh heh, I already covered that.

Originally posted by Patrick Patrick wrote:

That's great John, for anyone who might need a clutch fork immediately...

 




Print Page | Close Window

Forum Software by Web Wiz Forums® version 12.01 - http://www.webwizforums.com
Copyright ©2001-2018 Web Wiz Ltd. - https://www.webwiz.net