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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

Clutch Replacement.

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Old May 12, 2017 | 10:18 PM
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Clutch Replacement.

So I have 1983 f150 with the 4.9. I'm doing a clutch replacement along with the flywheel but every flywheel I've found is calling for 6 or 7 crankshaft bolt holes and I'm not sure which one I would need, I would really appreciate some help on this.
 
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Old May 13, 2017 | 03:33 AM
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Are you the original owner? A lot can change in 34 years..
 
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Old May 13, 2017 | 07:59 AM
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I take it you don't have it apart yet?
Why do you want to replace the fly wheel?
You should be able to pull it send it to a machine shop and have them grind it and reuse it.


Only time you might have to replace it is if it has cracks that run deep.
If the fly wheel is not showing signs of heat, blue/black marks, or cracking hit it with sand paper to take the glaze off and be done with it.
Dave ----
 
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Old May 13, 2017 | 10:35 AM
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A new Luk flywheel from Amazon, with free shipping, is about the same price as resurfacing the old one, not counting gas and time to get it done.

I need to change my original clutch, and I want a new flywheel sitting there ready to put back without wasting a day or three waiting on a resurface.
 
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Old May 13, 2017 | 01:10 PM
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Machine shop prices are becoming too high to even bother.
add the price of a shim and it *does* cost as much as new. (plus the hassle of two trips and a wait)

Number of holes for the crank, or the pressure plate?
I'm not familiar with the I-6, so excuse my ignorance.
 
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Old May 13, 2017 | 05:13 PM
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Originally Posted by ArdWrknTrk
Machine shop prices are becoming too high to even bother.
add the price of a shim and it *does* cost as much as new. (plus the hassle of two trips and a wait)

Number of holes for the crank, or the pressure plate?
I'm not familiar with the I-6, so excuse my ignorance.
That may be true but when fly wheels are balanced for a size motor and ALL fly wheels will bolt up to ANY size motor AND this is the big one ALL parts stores list 1 fly wheel to cover ALL SIZE MOTORS!
It is hard to tell the right one from the wrong ones and you may never get the right one because the fly wheels are listed to cover ALL MOTORS and this is not true.



I was looking to see if I had a picture of the fly wheel bolts but I don't have one.
Now if talking the pressure plate bolts I can check the old one from my truck. I replaced everything but the FW when I had motor & trany out even when I found out they were good.
Dave ----
 
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Old May 13, 2017 | 05:15 PM
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Originally Posted by yardbird
A new Luk flywheel from Amazon, with free shipping, is about the same price as resurfacing the old one, not counting gas and time to get it done.

I need to change my original clutch, and I want a new flywheel sitting there ready to put back without wasting a day or three waiting on a resurface.

​​​​​​Here's one thing to consider: The quality of some aftermarket parts is marginal at best. I've no experience with Luk brand parts, so take this with a grain of salt. On some other vehicles in my fleet, replacement parts like brake rotors and water pumps were of dismal quality. Personally, I'd prefer to stay with the OEM flywheel currently installed (guaranteed to fit) and have it resurfaced, versus gambling on an aftermarket item.

As far as the wait, look for a local clutch/friction specialty supplier. Not sure where you are (no signatures on the mobile version), but about ten years ago I needed a new flywheel ring gear on my truck. I brought the flywheel to Ott's Friction in Portland, Oregon. They replaced the ring gear and resurfaced the flywheel while I waited. It's been a while, but I remember being impressed how quickly they did it. I want to say it was only about twenty minutes.
 
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