Question on Pressure Plate
06-23-2013, 05:08 AM
#1
Question on Pressure Plate
I'm rebuilding my YS1 tranny because 3rd gear is grinding on high RPM shifts. I decided to replace the OEM flywheel and clutch with an ACT Streetlight flywheel and CC Stage 2 clutch assembly.
Long story short I had the clutch assembly torqued down to spec waiting to finalize the 3rd gear installation on the tranny and a friend mechanic told me the diaphragm tips are too flat (parallel) and that I should either have the flywheel machined to move the clutch disc "deeper" in or shim the pressure plate where the bolts attach it to the flywheel to pull it out. Otherwise I'm going to have issues getting into gear. He said this happens when you mix vendors on a clutch/flywheel combo.
The CC installation instructions say the following:
When the pressure plate has been torqued down to the flywheel using factory specs ensure the diaphragm tips are in parallel or slightly upward position. Mine is parallel so am I good to go or should I listen to my friend?
The first pic shows the PP unbolted and aligned so you can see how the diaphragm tips are pointed outward
The second pic is the same but with the PP bolted down so you can see how the diaphragm tips are parallel.
The third and fourth pics show different angles of the diaphragm tips without the alignment tool installed.
Long story short I had the clutch assembly torqued down to spec waiting to finalize the 3rd gear installation on the tranny and a friend mechanic told me the diaphragm tips are too flat (parallel) and that I should either have the flywheel machined to move the clutch disc "deeper" in or shim the pressure plate where the bolts attach it to the flywheel to pull it out. Otherwise I'm going to have issues getting into gear. He said this happens when you mix vendors on a clutch/flywheel combo.
The CC installation instructions say the following:
When the pressure plate has been torqued down to the flywheel using factory specs ensure the diaphragm tips are in parallel or slightly upward position. Mine is parallel so am I good to go or should I listen to my friend?
The first pic shows the PP unbolted and aligned so you can see how the diaphragm tips are pointed outward
The second pic is the same but with the PP bolted down so you can see how the diaphragm tips are parallel.
The third and fourth pics show different angles of the diaphragm tips without the alignment tool installed.
06-28-2013, 04:47 PM
#6
Re: Question on Pressure Plate
That's 1000% (one thousand percent) normal.
The diaphram is a conical spring. It has the cone-shape when not loaded, and flat when loaded, that is under pressure. This when the fingers are flat, that means the pressure plate is applying maximum pressure to the disc--and that's what you want.
You can trust me on this. I've studied clutches very thoroughly at Action Clutch.
Fo-shizzay
The diaphram is a conical spring. It has the cone-shape when not loaded, and flat when loaded, that is under pressure. This when the fingers are flat, that means the pressure plate is applying maximum pressure to the disc--and that's what you want.
You can trust me on this. I've studied clutches very thoroughly at Action Clutch.
Fo-shizzay
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