2.9 pulleys

Natedog · Nov 22, 2007

I'm looking to get rid of un-needed crap and reduce rotating mass at the same time.

My 87 2.9 used to have AC, but I removed it all and changed the heater box out too. Can I un-bolt the third pulley from the crank shaft? As I recall this has four little bolts and comes right off. What about on the water pump? There is a third now un-used pulley there too, but I recall that this one is spot welded together with the other two on there that are still used. Does it come off or do I need to go to jy and get a non-AC truck water pump pulley?

np24 · Nov 23, 2007

the ac part of the crank pulley comes off, but as far as i've seen, all the water pump pulleys are the same with the ac grove. i wouldn't worry about it.

Natedog · Nov 23, 2007

np24 said:
the ac part of the crank pulley comes off, but as far as i've seen, all the water pump pulleys are the same with the ac grove. i wouldn't worry about it.

Thanks, and I'll have to look next time at jy anyways. Apparently my memory is way off tonight.

Natedog · Nov 24, 2007

Removed the AC pulley on the crank, four 1/2" bolts and two small prybars. That sucker must weigh at least 2 lbs! Looks like the one on the water pump is spot welded together...thought about using a good file, remove the fan, start the engine and use it like a lathe to cut off the outer front pulley groove...LOL...I know that would be dangerous and I'm not going to do it. Will check jy, wish I had a real lathe!

reagd · Nov 30, 2009

Natedog said:
I'm looking to get rid of un-needed crap and reduce rotating mass at the same time.

My 87 2.9 used to have AC, but I removed it all and changed the heater box out too. Can I un-bolt the third pulley from the crank shaft? As I recall this has four little bolts and comes right off. What about on the water pump? There is a third now un-used performance pulleys there too, but I recall that this one is spot welded together with the other two on there that are still used. Does it come off or do I need to go to jy and get a non-AC truck water pump pulley?

I just read that all the water pump pulleys are the same but never knew that it comes with an ac grove.

Natedog · Dec 1, 2009

Both of mine and all I've seen have a 3 groove waterpump pulley. The front groove is for AC....the other two for alternator and PS.

2.9 pulleys

Natedog

15+ Year Member

np24

15+ Year Member

Natedog

15+ Year Member

Natedog

15+ Year Member

reagd

10+ Year Member

Natedog

15+ Year Member

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