Step In Flywheel, Is This Normal?

[dancn]

I’m having some problems with a new clutch kit on my RB25det.

So I’m looking closer at the flywheel.

I’ve noticed a slight step between the pressure plate ‘mounting face’ and the ‘working face’ ( where the friction plate makes contact) of the flywheel.

The working face is slightly higher,

How much of a step should be between the pressure plate mounting face and the working face of the stock RB25det flywheel?

Is this step there to allow the working area to be machined.

[Ryanrb25]

well usually the whole face is machined flat.

get it machined

[Freddy Kruger]

yeah mine was like that when i had my clutch done. he had it machined and modified a little

[shanef]

there should be no step what so ever in the flywheel. there will be one from factory however when u get it machined, the whole surface gets machined as one true surface

[(B1) MR_fanny]

i have seen cusco and possibly Jun flywheels with those steps. does machining these chromolys weaken them? are you supposed to machine brand spankin new flywheels? im in the process of getting one.

[shanef]

from what ive been told, the need for a step in the flywheel is dependent soley on the clutch itself. Think about it, if u have a step in the flywheel, then the clutch disk/s will be sitting 'higher' than the pressure plate, and if the clutch wasnt designed to run this way, obviously damage is going to occur.

[(B1) MR_fanny]

yeah that make sense, so its also a matter of choosing the right flywheel for the clutch then. got it.