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+--- Thread: Clutch and gear box (/showthread.php?tid=6170)
Clutch and gear box - barrote - 01-26-2015
hello there,
FRAS, i belive u´re the man for clutches, question i need to upgrade my clutch, cant send it to u , is too far and heavy.;(
in your opinion , single or dual mass? wich presure plate will be best as a bolt on , or small modification.
gear box i´m inclined for the 616 from c270 cdi, what u think?
regards
RE: Clutch and gear box - F.R.A.S - 01-26-2015
thanks mate.The 270cdi gearbox is supposed to be the strongest ever fitted on a Mercedes so it's a good choice. Unmodified that gearbox need a dual mass flywheel to work. In MY opinion you should go with the eBay dual mass Sprinter setup.
LINK There are both vendors from UK and Germany so just choose any one you like.
I don't know how much torque they can handle but you can measure the clutch when it comes and either it's 8mm or 9,2mm thick. If it's 8mm you can buy any old sinter clutch that is 8mm
If it's 9,2mm you should buy a real Sachs Performance sinter clutch witch is 9,2mm 
Then is should hold the torque for a while...
The single mass flywheel can be machined for another PP though but this is the simplest way possible.
Cheers mate.
PS. Asking on the forum is great, then other can search and read and learn.
(01-26-2015, 05:02 AM)barrote hello there,
FRAS, i belive u´re the man for clutches, question i need to upgrade my clutch, cant send it to u , is too far and heavy.;(
in your opinion , single or dual mass? wich presure plate will be best as a bolt on , or small modification.
gear box i´m inclined for the 616 from c270 cdi, what u think?
regards
RE: Clutch and gear box - barrote - 01-26-2015
nice to hear that about the 616. that was what i thought, after seing the insights of one.
i have a dual mass FW , the ones that come in the slk, 202 250. 240mm disk, despite i dont hear and feel it slipping, very often comes the smell of disk burned. and when at full throtle sometimes the engine fells like shaking, boost gage shows shaking, expeccially in high gears. i have a 707.413 bla bla with the 2.82 diff.
it is my belif that the clutch slight slips and since is dual mass the shaking and vibration is due to that. what do u think?
what do u mean by 8mm, disk thickness?
RE: Clutch and gear box - F.R.A.S - 01-26-2015
Dual mass flywheels do just that, they shake and then they break in to two pieces and cuts you legs off...
If it smells burned clutch it is a burned clutch
8mm and 9,2mm is how thick the stock clutch is. Sachs usually uses 9,2mm clutches and other brands and the Chinese guys do 8mm clutches. It's super important that you have the right clutch for the right PP.
I saw a solution that a guy did. He out some steel tubing in the hole of the dual mass flywheel and in that way made it a (sort off) single mass flywheel. Pretty cleaver actually. Should work just fine if it's just tight and a good fit.
(01-26-2015, 02:08 PM)barrote nice to hear that about the 616. that was what i thought, after seing the insights of one.
i have a dual mass FW , the ones that come in the slk, 202 250. 240mm disk, despite i dont hear and feel it slipping, very often comes the smell of disk burned. and when at full throtle sometimes the engine fells like shaking, boost gage shows shaking, expeccially in high gears. i have a 707.413 bla bla with the 2.82 diff.
it is my belif that the clutch slight slips and since is dual mass the shaking and vibration is due to that. what do u think?
what do u mean by 8mm, disk thickness?
RE: Clutch and gear box - barrote - 01-26-2015
i see your point about the breaking, my clutch can´t be burned just cause it was not abused and was new from shop, not more than 3000k road driving.
i´m wondering to weld the FW , tig weld.
but i never messed with a clutch before so my doubt relays with the disk! do u see any problema using the same disk after welding?it is a solid disk , no dampning springs.
thanks
RE: Clutch and gear box - raidaru - 01-26-2015
(01-26-2015, 04:10 PM)barrote i see your point about the breaking, my clutch can´t be burned just cause it was not abused and was new from shop, not more than 3000k road driving.Solid disk is recommended only with DMF, otherwise gearbox will fail from vibrations sooner or later. I was also thinking DMF could be welded with TIG and the best way would be to weld it all around, not just some spots, then machine where it was welded, then balancing. U need a custom spring disk plate to use with SMF and also a better pressure plate, good luck!
i´m wondering to weld the FW , tig weld.
it is a solid disk , no dampning springs.
thanks
RE: Clutch and gear box - F.R.A.S - 01-26-2015
Weld is ok, but weld SLOW, just 1cm at the time and then @ 180-degrees from where you just welded... Will take a good hour to weld it
I use a om605 solid clutch with my single mass FW and that works perfect.
But you should go 6-point sinter.
(01-26-2015, 04:10 PM)barrote i see your point about the breaking, my clutch can´t be burned just cause it was not abused and was new from shop, not more than 3000k road driving.
i´m wondering to weld the FW , tig weld.
it is a solid disk , no dampning springs.
thanks
RE: Clutch and gear box - barrote - 01-26-2015
yep, i needed to know about that.
tig welding does not shrink or twist if properly done....
thanks FRAS it was of utmost importance. later i ll post about my concept .
regards