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| Water Pump Pulley?? https://slantsix.org/forum/viewtopic.php?t=66076 |
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| Author: | Badvert65 [ Fri Jul 09, 2021 3:06 pm ] |
| Post subject: | Water Pump Pulley?? |
Strange question here. Are all single groove basic water pump pulleys (balancer, water pump, alternator) supposed to be the same size, depth-wise? I have three different engines, a 73, 79, and 83 slant. The 73 is bone stock from a 73 Duster, I pulled it myself. Basic single barrel slant, no power accessories. The 79 engine is from a 79 Volare I had, original engine, (had power steering and A/C) now built up for my 65 Belvedere, no accessories. I have a new FlowKooler water pump on this engine. The 83 engine is from a Dodge D100. This one had power steering and A/C. The water pump and alternator ran off the single groove crank damper (single groove). This is also an unmolested engine. With just these three engines to compare, I am seeing three different pulley depths for the same alternator/water pump/crank single belt setup. Has anyone noticed anything like this? I thought they would all essentially be the same, but these engines vary anywhere from 1/8 inch to 3/16 (just under 1/4) inch. The difference is small enough for shims to correct, but I was just curious if I just happened to get three odd balls. |
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| Author: | DusterIdiot [ Fri Jul 09, 2021 5:31 pm ] |
| Post subject: | D |
D |
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| Author: | Rick Covalt [ Fri Jul 09, 2021 6:06 pm ] |
| Post subject: | Re: Water Pump Pulley?? |
Yes I have seen it too. |
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| Author: | Jase [ Fri Jul 09, 2021 7:02 pm ] |
| Post subject: | Re: Water Pump Pulley?? |
Quote: Quote: I never mocked up one of the unitary 3 belt groove HD dampers to see the variation. Working towards a 2 groove water pump pulley taken from a 74 D600 w/ a 318, and adding 1" spacer between the water pump flange and the pulley. |
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| Author: | SlantSixDan [ Fri Jul 09, 2021 8:00 pm ] |
| Post subject: | Re: Water Pump Pulley?? |
Quote: I never mocked up one of the unitary 3 belt groove HD dampers to see the variation.
I put one of those on my '62 Lancer (aluminum 225/forged crank). No power steering in that car, but it did have Mopar A/C. The water pump/fan/alternator (middle) and A/C (rearmost) belts lined up just fine with the middle and rearmost sheaves in the damper.
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| Author: | volaredon [ Sat Jul 10, 2021 5:19 am ] |
| Post subject: | Re: Water Pump Pulley?? |
I was wondering about that. I just got a 3 groove damper yesterday, it's marked '77 on the box and is thought to be NOS. I thought that back in the day those were used on mostly industrial engines. That was what I had read somewhere (maybe the damper rebuild company site? Don't remember now where I'd seen that bit of info. My question on usability is that 77 should be a cast crank. Did they change the rules on that for industrial engines? I'm thinking about using it on my '74 eng with forged crank, cuz I eventually want to add AC to the truck it is going into. When it comes to swapping dampers around, with all the talk about how much lighter a cast crank is, will it hurt anything to use a damper meant for a cast crank on a forged crank or vise versa? |
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| Author: | matv91 [ Sat Jul 10, 2021 5:42 am ] |
| Post subject: | Re: Water Pump Pulley?? |
https://www.slantsix.org/forum/viewtopi ... hilit=cast |
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| Author: | SlantSixDan [ Sat Jul 10, 2021 10:59 am ] |
| Post subject: | Re: Water Pump Pulley?? |
The 3-groove damper was a heavy-duty truck item, not an industrial-motor item. Last time I went digging down this particular wabbit hole was some years back, but I think I recall finding this 3-groove damper, with just the one part number, listed in '74 through '77 parts cattledogs. That spans the forged/cast crank changeover (which happened on all Slant-6s, including trucks). I never experienced any trouble or saw any problem resulting from using these on forged-crank motors. |
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