Timing belt and water pump parts..

Joined
May 15, 2022
Messages
37
Age
58
Location
Shelton, CT
Bike
1991 ST1100
Hey gang,

I don’t know if my timing belt and water pump have ever been changed/serviced by the previous owner.

Where are you sourcing parts? Is there a rebuild kit for the water pump?

Let me know, and send links if you can!

Thanks!!
 

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You can source parts from Partzilla, there was a company that sold rebuild kits for the water pump, however, they are no longer in business. You can source the required bearings and seals with the assistance of Google. Some of which are available at tractor supply outlets.
Timing belts are getting rare, I believe OEM is still available, a couple of weeks ago they were $175 Canadian. Gates T325 may be the replacement, but double check that number

EDIT! apparently there's another company that sells the water pump kit, see post #3.
HappyBikes out of Britain was where I got my kit from a number of years ago for about half the price. ;)
 
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Last word I heard Gates has quit making the ST1100 timing belt.
I would not worry about the age but the miles.
If you've got less than 100,000 miles on the engine I would not sweat the belt.
The water pump and pulleys can be another issue altogether.
But if you are in there for the pump might as well do the belt and pulleys also.
 
Last word I heard Gates has quit making the ST1100 timing belt.
I would not worry about the age but the miles.
If you've got less than 100,000 miles on the engine I would not sweat the belt.
The water pump and pulleys can be another issue altogether.
But if you are in there for the pump might as well do the belt and pulleys also.
I have 129,722 miles on her now ☹️. I have no reason to believe she NEEDS a timing belt and water pump now, but just trying to plan ahead.
 
I have 129,722 miles on her now ☹️. I have no reason to believe she NEEDS a timing belt and water pump now, but just trying to plan ahead.
Did you have her at 100,000 or was that the PO?
Honda says change the belt at 90,000 but I always wait until 100,000 and the belt still looks like new.
If you are going to keep the bike, I would buy the belt, the pulleys and either a new water pump or bearing kit to have on hand.
FWIW, I lost a waterpump on one of mine at 130,000 which grenaded the engine.
I had one head south at 140,000 with a bad leak.
So I am now in the camp of changing the water pump and bearings when you change the belt to err on the side of caution. ;)
But I do have one with 191,000+ miles on it with the original water pump and bearings.
 
Hey gang,

I don’t know if my timing belt and water pump have ever been changed/serviced by the previous owner.

Where are you sourcing parts? Is there a rebuild kit for the water pump?

Let me know, and send links if you can!

Thanks!!
Bike looks beautiful. Glad you brought it back to life. Good luck with sourcing the parts.
 
Did you have her at 100,000 or was that the PO?
Honda says change the belt at 90,000 but I always wait until 100,000 and the belt still looks like new.
If you are going to keep the bike, I would buy the belt, the pulleys and either a new water pump or bearing kit to have on hand.
FWIW, I lost a waterpump on one of mine at 130,000 which grenaded the engine.
I had one head south at 140,000 with a bad leak.
So I am now in the camp of changing the water pump and bearings when you change the belt to err on the side of caution. ;)
But I do have one with 191,000+ miles on it with the original water pump and bearings.
I think I bought her at 119,000 in 2022. Previous owner kept good records and is a Honda mechanic by trade. But I don’t see a record of doing the timing belt and water pump. I think I’ll start sourcing the parts now. Maybe get a used water pump and rebuild it; get it ready to go.
 
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