I was to lazy to replace DMF so I pulled inspection cover welded the two pieces together and put another 300k on it with no problems.

 

I like this guy. I'm sure it's not perfectly balanced, but then again is isn't from factory, who'd notice on a diesel anyway, and it's much cheaper and easier.

 

well what i have found in reading on the fly wheel on the duel mass and in the luk smf is there are a lot of copies of the luk stlye that are junk, (Made in china)i have heard of the people welding up a dmf and finding parts to make it work right and they say they have had good luck with it. the failure of the driveline etc is when the dual mass fails and it sends a massive shock thur the driveline, the luk system is made for the engine and the clutch has the springs in it which damper the shock, yes they are a little nosie but not that bad i can barely hear mine.

yes i could have welded mine up and go digging for parts in the parts stores etc to get the stuff to make it work, and i could have work for years or just a couple of days i did not know, but i bought the luk got everything i need including a new clutch fork pilot bearing for around 600.00 with shipping and had everything there to do the job. for me it was a better call to do the luk instead of wasting time trying to make something work. came home and it was sitting at my door. had it in about 4 hours, but it is personal preferance what you want to do. for me save time and spend the money.

 

Dave, I understand all about the strength issue. What I ment was, the duel mass is designed to soften the blow to save other parts of the drivetrain. If the duel mass does break (which it will), a guy is looking at about $1,000 to fix right, compaired to repairing either a trans, driveline or maybe ring/pinion...something in the rearend. So what is it the duel mass IS protecting ?? Keep in mind the auto trannys have aluminum housings also.

If it goes, there goes a grand, if the trans goes instead, it may be more, driveline, rearend....either of those are going to be cheaper than replacing the duel mass.

Point is, if a truck is used normally, there should be no problem. If it's used for mud bogs, sled pulling ect....all bets are off.

 

I was just offering a option that worked for me.

 

Automatics have fluid dampening of the pulses, that is why they are not related.

I did know which specific part the dual mass was protecting, but I can not remember for sure now. For some reason I want to say it was on the intermediate shaft in the transmission.

The last dual mass setup I know of someone buying was a little over 1200 dollars for the entire clutch package, flywheel, pressure plate, clutch disc and throw out bearing.
Those prices are a couple of years old.

 

i know right before i replaced mine i checked with a parts store and they qouted me 1300.00 just for the flywheel (DMF) and i went on to the luk one for 600.00

 

I called ford, lol curious to see. They want $2680 cdn for it.

 

Parts stores open in the morning. I'm not beyond cobbling it together. Do you remove the springs from the ring gear side if you do join them ?
Then again I'm only a half hour from South Bend and a luk. Decisions decisions.

I'm driving my 90 f-150 300 six.with a Mazda 5 spd. manual. Got it loaded and bottomed out. Been doing it for the last 10 years. But I sure can't wait to get the 1 ton super cab back on the road. Its a cadilac for construction workers. I'll have some news this week.
MF

 

my opinion i would do the luk that is a half hour away, but that is me, LOL

 

South Bend Clutch has their own version of a luk. The said it used high quality material unlike the discounter suppliers. I'm headin down that road .
mf

 

I vote wrecking yard for one from a 6.9.

 

Dog gonit Cleatusj. I ended up in South Bend this afternoon and got the 13 " luk look alike. $ 575.00 out the door. South Bend Clutch was a impressive store. Clutches every where. I intend on putting it back in tommorow evening.
Then I have to replace or fix the casting that holds the clutch and brake pedal. Its cracked in three places. Any suggestions. Thanks alot for all the input.
mf

 

Someones been mean to that truck, I've got 950k on my 86 an no cracks there. Check the wrecking yards. P.S. Dave said he used 6.9 on the first page of this thread.

 

Ok so what's the worst that can happen if the DMF goes out while driving. Will it tear the tranny apart or something? Or does it go out like a regular clutch and just start slipping?