shock absorbing with a massively heavy pedal or "you best be nice to it" with a lighter pedal.

 

Add one more to the list of people who've never heard the "smf will wear out your zf-5" statement - or ever heard of anyone its happened to...

I've had an smf setup in mine for a couple of years now - ever since I swapped a zf-5 for my old T-19.

If you want to go smf and do if for under $300 here's the poop on how to do it.

Go to Autozone and order the following:

Clutch disk part # CP31103A - it is splined for the ZF shaft (1-1/4") and has the springs in the hub (the "A" on the end of the part # is for Anti-vibration = springs in hub)
Pressure plate part # CA31055 - this is the deeper one for the SMF
Throwout bearing part # 614062 - this has the big center bore for the ZF and a face profile compatible with the release fingers on the SMF pressure plate
All of that will run you right about $175

And lastly get a refurbed flywheel from Napa - part # NNC 50710 for about $90.

Then read these two threads
https://www.ford-trucks.com/forums/6...uestion-3.html
https://www.ford-trucks.com/forums/6...body-lift.html

It's all straight forward bolt together stuff.
There are also some pretty helpful pictures of the process in my gallery...

 

have you ever had any shifting issues or noise with the SMF?

 

No shifting issues, and idleing around the pastures in low gear just a little gear rollover noise, but nothing at highway speed.

 

im pretty sure it was Festus who was also talking about the SMF wearing out ZF5's over time. haven't seen him on in quite awhile though.

and yes dual mass absorbs the engines shock load so the driveline operates more smoothly. with less noise.

i have driven several 3/4 - 1 ton ford diesels 2 of which i know for sure have dual mass. 1 being my own after checking. and the other i know its dual mass because i installed it. they both have a decent level of pedal resistance. not so much your going to have a leg so strong your gonna kick like a horse after driving but not so light you cant hardly feel it.

1 3/4 ton had a manual trans with i assume single mass because i got in there after driving my truck and damn near put the pedal through the floor. i could push it with my little finger....... i did not like that. if thats what single mass feels like and that's what your going for then ok. it went through the gears ok. had some rollover noise. but i myself need some resistance on my pedals.

most vehicles ive driven have the same amount of clutch pedal resistance as my truck be SUV, 1/2 ton, 3/4 ton, 1 ton.... all have different levels being different vehicles but no real extreme variance outside that 1 truck.

 

When you first get in mine after not driving it for a few days you think it's going to take a bionic leg to push that clutch down, yea I have gotten used to it but man it's a stiff clutch!

 

Light pedals usually drive me crazy, im used to tractors, loaders and semis, when i go to something new thats a fly by wire accelerator i almost do a holeshot everytime.

 

well country.... looks like were about the same then.... need pedal resistance. there are advantages and disadvantages to either setup its all a preference of the owner.

 

yea thats what im seeing. well i guess ill start priceing parts and see what i decide

 

Advance Auto Parts: New Clutch Set with New Dual-Mass Flywheel by Perfection Clutch - Part MU3000-1DK

Advance Auto Parts: New Clutch Set with New Flywheel by Perfection Clutch - Part MU1989-1SK

 

thanks 94, how about for plowing snow, anyone ever plow with a DMF?

 

Good deal on the DMF kit...

But I don't see any benefit to their SMF kit over my pieced-together Autozone/Napa "kit". Unless spending $300 more to get it all in one box is considered a worthwhile "benefit"...

 

Yes, the SMF will beat your ZF to death ... Yup, it may take years, but it'll happen!

Most of us will likely never live to see it happen, depends on how much you idle your SMF Diesel.

The DMF does not absorb drivetrain spikes ... The springs in the DMF are no where near strong enough, under load the DMF locks up and becomes like a SMF.

The purpose of the DMF is to absorb the rotational Pulse caused by a idling Diesel Motor, thus what causes Gear Roll Over thus what will in time beat your ZF's gears & splines to a pulp!

This did not become an issue until technology started playing parts and components were being made closer to their maximum yield. (i.e. Smaller and lighter)

Best way to explain the issue is ...
Take two fingers on one hand and give the Peace sign ...
Take one finger on the other hand and stick it between the other two ...
Then shake the hand with one finger ... It will beat the insides of your two fingers on the other hand!

Same thing happens to the gears & splines in a Diesel Transmission.

-Enjoy
fh : )_~

 

YES THANK YOU FESTUS FOR FINALLY COMING IN HERE!!! THIS IS WHAT I WAS TRYING TO EXPLAIN AND FIND THE OTHER PAGE WHERE YOU EXPLAINED THIS BUT I COULDN'T EVER FIND IT!

 

ahh i follow now. it absorbs the shock from idle.