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+--- Thread: What's the FW step height for Sachs 618/764 conversion? (/showthread.php?tid=5844)
What's the FW step height for Sachs 618/764 conversion? - raysorenson - 09-13-2014
I've got 765 setup that's not fully releasing. Maybe too much step height.
RE: What's the FW step height for Sachs 618/764 conversion? - capflya - 03-21-2016
Did you ever figure this out? The clutch in my car is starting to slip after a little over a year of service. Exploring options at this point. I'm using the 16v flywheel currently with the clutchnet stage 3 kit. I never thought I'd have slipping issues with this because my car is stock power wise.
RE: What's the FW step height for Sachs 618/764 conversion? - Duncansport - 03-21-2016
I could never get my clutchnet and 16v flywheel to work correctly, i even sent them the whole set up (fly wheel etc..)
RE: What's the FW step height for Sachs 618/764 conversion? - raysorenson - 03-21-2016
The 765 clutch is working out great. It's not easy finding a big 26 spline Mercedes clutch plate in the U.S. though. I'd source that before getting the 765 pressure plate.
RE: What's the FW step height for Sachs 618/764 conversion? - JVance - 03-21-2016
What was the issue of the of the clutch not releasing? Assuming you're using the terminology release = disengage?
RE: What's the FW step height for Sachs 618/764 conversion? - F.R.A.S - 03-22-2016
Both Sachs 618 and 765 are made for 9.2mm clutches.
This means that if you have a Sachs 9.2mm clutch your FW should be completely flat. If you have a standard 8mm clutch you need to have the PP face of the FW machined 1.2mm lower. We usually do it 1.2-1.5mm lower.
If you don't do this correctly the clutch will either not disengage or it will slip.
Easy as pie right
RE: What's the FW step height for Sachs 618/764 conversion? - F.R.A.S - 03-22-2016
I know a guy having them
ME haha.Other than that the c250tdt w202 have a 240mm clutch as stock if you are wishing to use an organic clutch.
(03-21-2016, 07:25 PM)raysorenson The 765 clutch is working out great. It's not easy finding a big 26 spline Mercedes clutch plate in the U.S. though. I'd source that before getting the 765 pressure plate.
RE: What's the FW step height for Sachs 618/764 conversion? - JVance - 03-22-2016
(03-21-2016, 07:25 PM)raysorenson It's not easy finding a big 26 spline Mercedes clutch plate in the U.S. though.
Why not use a GM clutch disc?
RE: What's the FW step height for Sachs 618/764 conversion? - capflya - 03-22-2016
(03-21-2016, 01:47 PM)Duncansport I could never get my clutchnet and 16v flywheel to work correctly, i even sent them the whole set up (fly wheel etc..)
Mine has been working fine up until just recently. I'm pretty sure the pedal is softer now so I'm wondering if their special "heat treatment" wore off or something and now it's slipping. I won't know anything until I pull it but Oleg offered to fix it so I'll see if he can. If not I'll have to pursue other options I guess.
(03-21-2016, 07:25 PM)raysorenson The 765 clutch is working out great. It's not easy finding a big 26 spline Mercedes clutch plate in the U.S. though. I'd source that before getting the 765 pressure plate.
It's just the same one the 300E used right? 240MM?
(03-22-2016, 02:44 AM)F.R.A.S Both Sachs 618 and 765 are made for 9.2mm clutches.
This means that if you have a Sachs 9.2mm clutch your FW should be completely flat. If you have a standard 8mm clutch you need to have the PP face of the FW machined 1.2mm lower. We usually do it 1.2-1.5mm lower.
If you don't do this correctly the clutch will either not disengage or it will slip.
Easy as pie right
I have a flywheel from a 190D for the 8 and 8.5" clutch, I think I recall reading that it can be machined down to accept the 765/618 flywheels?
RE: What's the FW step height for Sachs 618/764 conversion? - F.R.A.S - 03-23-2016
That translates to 215mm and 228mm right???
And yes those are the ones we mostly use. There are some better ones out there ;
ut they are super hard to find.Using a 618 is more or less pointless when the 765 fits as good.
(03-22-2016, 11:55 PM)capflya(03-22-2016, 02:44 AM)F.R.A.S Both Sachs 618 and 765 are made for 9.2mm clutches.
This means that if you have a Sachs 9.2mm clutch your FW should be completely flat. If you have a standard 8mm clutch you need to have the PP face of the FW machined 1.2mm lower. We usually do it 1.2-1.5mm lower.
If you don't do this correctly the clutch will either not disengage or it will slip.
Easy as pie right
I have a flywheel from a 190D for the 8 and 8.5" clutch, I think I recall reading that it can be machined down to accept the 765/618 flywheels?
RE: What's the FW step height for Sachs 618/764 conversion? - capflya - 03-23-2016
Cool... 8" is 203.2MM but I know the 8.5" clutch disk fits in this flywheel so this should work. So if using the 9.2MM thick disc, it's basically just machine it flat with the clutch contact surface, then drill and pin for the 765 flywheel?
RE: What's the FW step height for Sachs 618/764 conversion? - F.R.A.S - 03-24-2016
Yes that's correct.
Remember to balance it though.
(03-23-2016, 02:26 PM)capflya So if using the 9.2MM thick disc, it's basically just machine it flat with the clutch contact surface, then drill and pin for the 765 flywheel?
RE: What's the FW step height for Sachs 618/764 conversion? - raysorenson - 03-24-2016
Capflya, yes same as the 300e 240mm disc. Or if you want an unsprung hub get a 240mm disc from a dual mass car. I could find them but only with a pressure plate.
The issue of using a 9.2mm thick disc is that they come with BMW splines.
Beginner's luck: the clutch shop said my freshly machined 16v FW was already balanced with and without the 765 PP installed.