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Northstar Engines and System Technical Discussion Discussion, Water Pump Drive Pulley Removal in Cadillac Engine Technical Discussion; I am currently trying to remove the pulley on the camshaft. I rented a 3 prong pulley remover. The pulley ...
  1. #16
    JohnnyGauge is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    I am currently trying to remove the pulley on the camshaft. I rented a 3 prong pulley remover. The pulley itself is chewed up from the water pump pulley seizing up. The prongs are slipping off the pulley. Is it safe to dremel the plastic off the inner metal portion and use the pulley remover to pull the metal portion off?

  2. #17
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    OMG! DO NOT use a 3 jaw puller. Didn't you read the first 15 posts?

  3. #18
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Water Pump Drive Pulley Removal

    Quote Originally Posted by JohnnyGauge View Post
    I am currently trying to remove the pulley on the camshaft. I rented a 3 prong pulley remover. The pulley itself is chewed up from the water pump pulley seizing up. The prongs are slipping off the pulley. Is it safe to dremel the plastic off the inner metal portion and use the pulley remover to pull the metal portion off?
    This ^^^^ is an identical post to a new thread that he started - the two threads are now close together, both refer to water pump drive pulleys, and no, he didn't read the rest of the thread.

  4. #19
    houster2002 is offline Cadillac Owners Member
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    Re: Water Pump Drive Pulley Removal

    What is so wrong with a key way and a bolt or a slotted shaft for this pulley to attached to the cam shaft someone give me 5 Min's alone with the Northstar engineers they need 32 punches in the face each!!!!!!!
    Remember when you could remove 6 or 8 bolts and change a valve cover gasket. Not to mention pulling the motor and separateing the transaxle just to drop the oil pan these guys got it comming to them. This engine is over enginered and is sicking that its an American!!!!!

    Ps The thing thats burning me up is the guy washed his car often and pressured washed his motor. This caused water to get into the top of the head and rust the little bit of steel in under the valve cover causing the pickup tube screen to clog and caused the pressure relife valve to be stuck open hence loss of oil pressure. Normally undoing the motor mounts and droping the pan would fix this or a easier valve cover removal may have prevented it. But NO!!! Drop the motor remove transaxel and a pile of parts and gaskets to boot and BTW no bolt holes in a Harminoic Ballancer WTF!!!! SO GM / Caddy nice job sell a pretty car that people want to wash and have it cause a $3,500 to $4,000 dollar repair now thats thinking PROFIT!!!! Why did we bail these guys out again please remind me!!!!!

  5. #20
    RippyPartsDept's Avatar
    RippyPartsDept is offline Hi, I'm Chris - Please Read My Signature
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    Re: Water Pump Drive Pulley Removal

    nice rant

    1 - don't pressure wash your engine bay... i wouldn't even recommend spraying a garden hose in the engine bay ... just too risky

    2 - the northstar was introduced to the world 20 years ago in 1992 for the 1993 allante - it was a lotus 32 valve DOHC design that GM had been working with (first with the Corvette LT5 engine) ... it was and probably still is one of the most technically complex V8s GM has ever made.

    3 - luxury cars will require luxury repairs ... just because it's not worth $50,000 anymore doesn't mean the repairs will get cheaper too

    4 - would you really rather GM had stuck with the HT engines???
    Chris Heath (RippyPartsDept) is an ASE Certified GM Parts Consultant at
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  6. #21
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
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    Re: Water Pump Drive Pulley Removal

    My, oh my !

    The water pump drive pulley pulls off and presses onto the cam snout quickly and easily using either the GM shop tools or a slightly modified P/S pump pulley puller and a metric bolt/nut/stack of greased washers.

    Too bad the OP never worked on '50s and '60s Jaguars, MGs, Austin Healeys - and don't mention Ferrari or Lamborghini.........or anything with a Lucas electrical "system".

    BTW - Welcome Aboard !!!

  7. #22
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    Re: Water Pump Drive Pulley Removal

    Yeah ive heard horror storys of that famous "Lucas Electrical System.

    Getting ready to do this Water Pump job today.
    Wish me luck... I'll probably need it

  8. #23
    jeffrsmith is offline Cadillac Owners Fanatic
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    Re: Water Pump Drive Pulley Removal

    Yes, Lucas Electrical. Just the mention brings back fond memories of my Triumph TR6.

    For the Water Pump job, just make absolute certain that the cartridge removal tool properly engages the tabs on the pump. This can be a horrendous job if you cannot get the removal tool properly engaged.

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