ledslinger29
Well-known member
on my 170, I got a two groove balancer from VI, and those things sure are close together. Is it a problem?
ledslinger29":nx3sl7g4 said:on my 170, I got a two groove balancer from VI, and those things sure are close together. Is it a problem?
On my 81 3.3 Mustang, there is 6" from the water pump to the crank centreline, and the same 3/16"gap between the 6-1/4" harmonic balancer and the 5-3/8" water pump pulley. When you go up to the 6.85" harmonic balancer with a US 200, then you have to go down to a 4-25/32" (4.78125", or 121.44 mm diameter max ) water pump pulley at the most. And for sure, the harmonic balancer is 5/16" further out than the stock 200 blancer. But you just add that in a metal spacer, or scratch build a water pump pulley to suit.
rickwrench did a nice 5" twin belt pulley for his short nose 4" 200 water pump.
Due to the portrusion, without an added spacer, 1.9625" (49.85 mm) is as deep as you can go from the front face of the pulley to the back if its machined this way, as the 200 water pumps lower radiator hose interfers,
http://www.v8alfa.com/images-sounds/pulley.pdf
chad, the 250 is quite a bit different, does not use the same balancer/watrpump/etc... the 144/170/200 engines are mostly the same in this regard, just the 250 is different...chad":2wd6vxlf said:"...On mine (’81, 3.3 Mustang) there is 6" from the water pump to the crank centerline, and the same 3/16" gap between the 6-1/4" harmonic balancer and the 5-3/8" water pump pulley. When you go up to the 6.85" harmonic balancer with a US 200, then you have to go down to a 4-25/32" (4.78125", or 121.44 mm diameter max ) water pump pulley at the most. And for sure, the harmonic balancer is 5/16" further out than the stock 200 balancer. But you just add that in a metal spacer, or scratch build a water pump pulley to suit.
(rickwrench did a nice 5" twin belt pulley for his short nose 4" 200 water pump).
Due to the protrusion, without an added spacer, 1.9625" (49.85 mm) is as deep as you can go from the front face of the pulley to the back if its machined this way, as the 200 water pumps lower radiator hose interferes…"
Would being a 170 (or my 250) be any different (the OP) than this 3.3?
How much variation is there on these sm6 for yrs and displacements?
One size does not seem to fit all…
I'm showing 5.915 for diameter and roughly 3 for depth, measured from the back of the groove to the front of the pulley. I think my problem may be the water pump length. This new one is about 3.9 from base to outside edge of the flange that the pulley bolts to. Saw the the two looked about the same, and threw out the old one (I know).Econoline":9ph6ohjo said:what is the depth of the wtr pump pulley you have? And the diameter? I have a spare 170 wtr pump pulley I can compare for you. It is different than what I can see of yours.