Whirling noise and what type cam.

Discussion in 'Engine, Fuel and Exhaust' started by bbarbee, Oct 2, 2011.

  1. bbarbee

    bbarbee Member

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    I have a 1997 80"evo. Just have valves done 6 months ago and bored 10 over 1 and a half ago. Last week I started hearing a whirling noise. Increases and decreases with engine. Stumped!!
    I'm planning on tearing it down this winter anyway but still wanted to know.

    Also what type or size cam should I install. Just want a good sound. So many out there.
    Thanks!
     
  2. speedyron

    speedyron Active Member

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    doesnt sound good. if you just want change sound get diff pipes and not mess with the stock
     
  3. Jack Klarich

    Jack Klarich Expert Member

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    Selecting a performance camshaft :s
     
  4. bbarbee

    bbarbee Member

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  5. the draggin

    the draggin Active Member

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    I haven't a clue as to your noise,but it doesn't sound good. As for a cam I used the Andrews EV-27, bumped the compression to 9.5:1 and had my heads flowed. The power and smoothness was great. Ride all day 2 up and rarely have to downshift. Good luck with your project.
     
  6. Jack Klarich

    Jack Klarich Expert Member

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    Can you isolate the noise? This would be a big plus when you do your tear down, take digital pics as you go through the tear down use it as a reference and good luck I would pay close attention to the breather gear and wear and tear in the cam chest replace the cam bearings too:s
     
  7. bbarbee

    bbarbee Member

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    Found something interesting. Last thing I replaced was the stator so I went back in to check to make sure a bolt that holds the stator hadn't backed out. As I have heard check the last thing you did first.
    Well after pulling the plug out of the primary....almost 6 quarts of oil came pouring out. Seems that the seal behind the rotor had worked out. I had been checking the oil and kept wondering if I had added enough oil the last time. Now I know where it went. I'm hoping this is where the whole problem has stemmed from.
    Any thoughts would be greatly appreciated!!!!
     
  8. Jack Klarich

    Jack Klarich Expert Member

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    Too much oil in there would probably sound like a washing machine, sounds like you solved the problem:s
     
  9. bbarbee

    bbarbee Member

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    Hope....We'll see in a couple days! Stay tuned!
     
  10. bbarbee

    bbarbee Member

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    Engine is toast! Main bearings let go. Pistons shot....This is gonna cost!!