Honda ST1100 22321-MT3-000 Steel Clutch PLATE (B)

[Garry_Coates]

Hi Guys, would somebody with a new steel clutch plate please measure its thickness with a micrometer and reply. Honda only provide the spec for the whole pack. I would like to compare new and old thickness measurements to determine wear rate.

Regards
Garry

 

[Garry_Coates]

Aftermarket parts give the following specs:
1. 22321-MT3-000 @9 - 139mm x 2.0 mm Clutch Steel Plate with 28 Pegs
2. 22201-MA7-000 @2 - 151mm x 3.5mm Clutch Friction Plate with 12 Pegs
3. 22201-MY3-000 @8 - 150mm x 3.8mm Clutch Friction Plate with 12 Pegs
The clutch pack therefore is 55.4mm which is well within range and within 0.32mm of maximum. A new clutch pack soaked in oil is probabley close to maximum. When I measure my 120,000 km old oem steel pack (only) I get 18mm, within 0.02mm, so virtually no wear. Sure they still a little greasy with oil but I can say changing the steel plates if they are straight is a waste of time.

If some body measures a new plate and gets 2.03mm (.27mm difference in total) then it might be worthwhile.

Regards
Garry

55.4​

 

[Al st1100]

Aftermarket parts give the following specs:
1. 22321-MT3-000 @9 - 139mm x 2.0 mm Clutch Steel Plate with 28 Pegs
2. 22201-MA7-000 @2 - 151mm x 3.5mm Clutch Friction Plate with 12 Pegs
3. 22201-MY3-000 @8 - 150mm x 3.8mm Clutch Friction Plate with 12 Pegs
The clutch pack therefore is 55.4mm which is well within range and within 0.32mm of maximum. A new clutch pack soaked in oil is probabley close to maximum. When I measure my 120,000 km old oem steel pack (only) I get 18mm, within 0.02mm, so virtually no wear. Sure they still a little greasy with oil but I can say changing the steel plates if they are straight is a waste of time.

If some body measures a new plate and gets 2.03mm (.27mm difference in total) then it might be worthwhile.

Regards
Garry

55.4​

steel plates in a wet system don't wear for the most part. If you mic the old ones at the tabs or ears where the disc does not touch you will get an accurate measurement.

 

[Ron]

Are you having problems or is this preventative?

I put over 200K miles (322KM) on a '96 ABSII and didn't have any problems. It started slipping one time but upon inspection of the empty oil jug I found I had used energy conserving oil. A change to the correct oil and a filter fixed that.

 

[Garry_Coates]

steel plates in a wet system don't wear for the most part. If you mic the old ones at the tabs or ears where the disc does not touch you will get an accurate measurement.

Thanks John, tried that but was inconclusive. Considering the steel plates are only 1/3 of the thickness of the pack and have little wear I think I will go with my conclusions.

 

[Garry_Coates]

Are you having problems or is this preventative?

I put over 200K miles (322KM) on a '96 ABSII and didn't have any problems. It started slipping one time but upon inspection of the empty oil jug I found I had used energy conserving oil. A change to the correct oil and a filter fixed that.

Hi Ron, just planning to change the clutch pack in the next 20,000 km. Going back to OEM as EBC is giving slightly less mileage. I tend to buy parts well ahead of schedule.