Hoping someone can help with the clutch issue

[busanostra]

I installed a Gen 1 Busa engine on my GOLF KART PROJECT.
I DIY a clutch bracket using the stock clutch slave release cylinder, and I also lengthen the clutch push rod (not much).
It's working, I can shift.

Problem: When I pressed the clutch pedal all the way to the floor, there was a grinding sound.
If I let go by 1/4 inch, the grinding sound is gone, and I can still shift with no problem.
If I start again, pressing the clutch pedal, say 3/4, I don't hear the grinding sound.
Why is that? Did I push the clutch plates all the way or something?

[RedBull]

Thread 'Weird clutch slipping situation!'

Sep 21, 2018

2003 Hayabusa

BEFORE I GET STARTED!
I have replace the master cylinder and all new internals, new 2004 slave cylinder (yes it fits), fresh 5.1 brake fluid, replaced the sprocket cover with heavy duty bullet cover (to protect the pushrod and water pump in case of a chain break), new push rod, put in a new clutch kit and I am using the OEM recommended oil weight/type. I even use a mityvac to get the air out of the line.

Before it was slipping when warm.
Now it is still slipping when warm.

The weird thing is...... While the engine is still hot and slipping, I can pull over, open the...

• Jdiddy313
• Replies: 41
• Forum: Busa problems

careful adding too much clutch without a slave support *

[busanostra]

I installed a Gen 1 Busa engine on my GOLF KART PROJECT.
I DIY a clutch bracket using the stock clutch slave release cylinder, and I also lengthen the clutch push rod (not much).
It's working, I can shift.

Problem: When I pressed the clutch pedal all the way to the floor, there was a grinding sound.
If I let go by 1/4 inch, the grinding sound is gone, and I can still shift with no problem.
If I start again, pressing the clutch pedal, say 3/4, I don't hear the grinding sound.
Why is that? Did I push the clutch plates all the way or something?

View attachment 1703580

View attachment 1703581

Thank you,
I will try to open it and check if any of the bolts backed out.

[202mphbusa]

Longer Pushrod
probably pushing outer pressure plate too far and allowing bolts to hit cover
or allowing outer pressure plate to come out of the top of the outer basket (less likely)