The bolts that attach the twin disc clutch pack are much smaller diameter than the ones used for the standard clutch. The manufacturer specifically told me that they are not up to the task of reliably drawing down the pack to the flywheel. It may work some of the time but probably won't work every time. Since the incremental cost to do it "right" is so low and the cost of failure is so high it was an easy decision to make, especially since I could make a suitable tool from materials on hand and 30 minutes of labor.

 

I don't have a photo of the tool but I have a sketch I used to make it. The tool is at my mechanic's shop, I let him keep it.

 

That is a simple enough tool to fabricate. Thanks for the sketch. Instead of the center hand nut on the factory tool you used the 3 bolts to gradually compress the clutch springs. I will add a pilot on the triangular steel tool so the cylindrical spacer stays in place easily.

 

Correct about using the bolts to draw down instead of the center nut. I had a piece of pipe that had an end cut down to a smaller diameter that fit in the center hole so the spacer stayed in place. Sorry about forgetting some of these details, this was done about 18 months ago...

 

No problem on the missing details. I only repeat them in case someone else uses this thread for reference in the future. I am a mechanical designer for a living so I already thought of those details looking at your hand sketch.

 

Agreed. This is not a cheap upgrade. Apart from the cost of the twin clutch assembly, there is a significant amount of labor involved. Taking all of the above into account, I certainly recommend a clutch compression tool as part of the clutch upgrade process.

 

Necro bump. Would anyone happen to know WHICH clutch compression tool would work on the twin disk? I did a quick search and there are sooooooooooo many different types.. I'm not sure where to begin.

 

Here is more info how it looks
twin clutch compression tool

 

You, sir, are a life saver.

 

Glad I could help