Which waterpumps is this?

[Laaf]

It's got 26 teeth. Going to put an ADU pump to the list then. + the ADU belt

[UrS4boy]

It's got 26 teeth. Going to put an ADU pump to the list then. + the ADU belt

I guess if you had posted a photo that showed all the teeth on the pulley, we could have figured it out sooner. Good news - you probably (maybe) have an ADU water pump (maybe). At least it has the ADU tooth count, which implies the need for the 150 tooth belt.

[Laaf]

This is what the whole package looks like. This engine is a mashup consisting of AAN head, 3B block and forged internals.

[UrS4boy]

This is what the whole package looks like. This engine is a mashup consisting of AAN head, 3B block and forged internals.

Questions:

1. Did you have to drill and tap holes to mount the AAN-style cam belt tensioner?

2. What is the harmonic damper off of? 3B or AAN?

3. What do you mean by forged internals? I thought the OE cranks were forged. Rods?

PS: I had to check the water pump pulley. Yup. 26 teeth.

[Laaf]

Questions:

1. Did you have to drill and tap holes to mount the AAN-style cam belt tensioner?

2. What is the harmonic damper off of? 3B or AAN?

3. What do you mean by forged internals? I thought the OE cranks were forged. Rods?

PS: I had to check the water pump pulley. Yup. 26 teeth.

1. Previous owner did it.
2. No idea actually.
3. Aronmatic rods with JE pistons. In swedish it's commonly called "smidd bottendel" when running forged rods and pistons and it translates into "forged shortblock".

I haven't managed to find any part number on the timing belt though.

[UrS4boy]

1. Previous owner did it.2. No idea actually.3. Aronmatic rods with JE pistons. In swedish it's commonly called "smidd bottendel" when running forged rods and pistons and it translates into "forged shortblock".I haven't managed to find any part number on the timing belt though.

Thanks. Count the teeth on the belt. 150 = ADU, 151 = ABY

[twoqu]

Some more info below. Does look like the RS2 pump has the 4 holes in the pulley for some reason!

http://www.s2forum.com/forum/showpost.php?p=352283&postcount=35