Need a favor from those with SBM and power steering.

Suspension, Steering and Chassis

  1. JoePole1

    JoePole1 A dude in a B body FABO Gold Member

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    Belt is not bottoming. Sits pretty flush with the top of the pulleys. Also the bottom of the pulley is dull and oxidized. Belt is tight. I have even over tightened to check effect. No difference. Looking for pulley. Why are GM $30 and Mopar $80???? Appears to be 6.8" . GM is 5.8"
     
  2. IfItsGotWheels

    IfItsGotWheels X S Tech

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    There is one way you can check to see if it's a slipping belt/pulley issue. Go to your local industrial supply house & buy a can of BELT DRESSING. Take the belt off and spray some on rag & wipe the belt with it until the belt is slightly sticky. Put the belt back, retighten it & try again. If the squealing stops, It's either the belt, the power steering pulley or the crank pulley, If not, at least you've eliminated pulleys & belts as the issues. I used belt dressing spray extensively in my career as an industrial mechanic [37yrs] to temporarily stop slippages until I had time to replace belts or pulleys.
     
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    • Mike69cuda

      Mike69cuda 64 is the new 17 FABO Gold Member

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      One experiment I did was to buy a fractional horsepower belt at Grainger. They are made out of different material and had no cogs. People say cogs are not good, but those are about the only auto belts you can buy. The one I bought was 3/8 width, so it wasn’t the same width, but worked. Squealing stopped. I don’t know if they are rated for auto use, so I was a little unsure about running it long term. I sanded my auto belt after that and tried again and it didn’t squeal anymore. Sorry that didn’t work for you. I chased this forever with no luck till the end.
       
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      • Mopar73340

        Mopar73340 Well-Known Member

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        When I installed the serpentine conversion shown in my previous post I developed a squealing noise which turned out to be the water pump impeller rubbing the water pump housing. Evidently it was pressed on the shaft just a little to far and the extra tension of the serpentine belt on the pulley caused the impeller to make contact. New water pump and everything good again. Something else for you to consider.
         
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        • JoePole1

          JoePole1 A dude in a B body FABO Gold Member

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          Had some buried in the back of my storage shelves.

          IMG_20210407_151214_hdr.jpg

          it appears now the the screech starts at 3000 rpm as opposed to 2300 rpm before. Unfortunately I have been working the carb from outside the car so I don't know what action caused the bump.
           
        • JoePole1

          JoePole1 A dude in a B body FABO Gold Member

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          My gates belt is a non cog.
           
        • 512Stroker

          512Stroker We are all here because we are not all there.

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          Which pulley do you need, I have some in back stock? Crank and P/S pulley?
           
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          • JoePole1

            JoePole1 A dude in a B body FABO Gold Member

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            Progress!!!!!! I have an adjustable emergency belt and tried to isolate PS with crank and it was good. Next crank and water pump. Good. WTF. I put an old non cog belt I had on installed all 3 pulleys and it was good. Then I installed the viscous fan and it came back!!!!. Kind of makes sense that with engine speed the clutch kicks in however I am also wondering if the extra weight on the water pump bearing could be causing the noise. I have 3 fans but they cannot mount directly to the water pump. Really difficult to pinpoint the sound because of the fan moving air in the shroud plus the engine screamin. Anyway....I am going to find a new fan/clutch. I'll report back.

            Thanks for helping me work through this. Really appreciated.
             
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            • Mike69cuda

              Mike69cuda 64 is the new 17 FABO Gold Member

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              Wow, that makes sense! I did not consider that.
               
            • Mopar73340

              Mopar73340 Well-Known Member

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              I believe I referenced the fan multiple times. I wouldn’t say it’s necessarily a bad clutch. The weight of the fan and the drag is a lot for one belt to handle hence the slipping. Main reason I went to electric fan and serpentine setup. Hopefully you’ve got it figured out now.
               
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              • Scamp Rhonda

                Scamp Rhonda Well-Known Member

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                I was thinking water pump too, but when you put water on the belt and it quieted it down. I was stumped :BangHead:
                 
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                • JoePole1

                  JoePole1 A dude in a B body FABO Gold Member

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                  I agree 100% but I have been running the same configuration for over 10 years. Parts wear and fail. Hoping it's going to be the fan clutch. I am currently building a 5.9 magnum and this set-up is going onto that engine. Would like to carry over the serpentine set-up but would need to replace alt, ac, ps, crank and add electric fuel pump. Nah.
                   
                • JoePole1

                  JoePole1 A dude in a B body FABO Gold Member

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                  Got my replacement viscous fan clutch today and installed it. Guess what???? Not the issue. Ugh!!!
                  I removed it again and ran without the fan and clutch. No screech. Gotta be the extra weight hanging off the end of the
                  water pump making bearing noise or as Mopar73340 said impeller rubbing but I would think that would happened at any
                  RPM. Any other thoughts? I would really hate to replace the water pump without that being the issue.
                   
                • Scamp Rhonda

                  Scamp Rhonda Well-Known Member

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                  Have you tried running it with just the pulley and no fan in case there's a crack in the fan somewhere? Otherwise, I think were back to the water pump.
                   
                • JoePole1

                  JoePole1 A dude in a B body FABO Gold Member

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                  Yes I did. No noise.
                   
                • Scamp Rhonda

                  Scamp Rhonda Well-Known Member

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                  So...... Have you tried a different fan then? It would be easier than a water pump, lol.
                   
                • 512Stroker

                  512Stroker We are all here because we are not all there.

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                  May have to go to a direct drive fan and lose the clutch drive.
                  I have one if the OP needs one.
                   
                • JoePole1

                  JoePole1 A dude in a B body FABO Gold Member

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                  I have another 5 blade fan I could try. It will need to mount to the clutch fan due however. Easy enough to do. I don't have one that I can bolt directly to the pump. I'll ask around my buds for a loaner. Car runs spot on temperature wise now. Thanks.
                   
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