Drilling and Tapping The Northstar V8......my personal experience so far. - Page 4
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Northstar Engines and System Technical Discussion Discussion, Drilling and Tapping The Northstar V8......my personal experience so far. in Cadillac Engine Technical Discussion; Oh yeah. Studs are stepped? Not same thread diameter at both ends?...
  1. #46
    stoveguyy is offline Cadillac Owners Connoisseur
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    Oh yeah. Studs are stepped? Not same thread diameter at both ends?

  2. #47
    98eldo32v's Avatar
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Both heads are now torqued in place. 75ft lbs perr CCC instructions.

    I have to clean up the coolant crossover mounting surfaces.

    I didn't like the "feel" of the water pump tensioner pulley. Either that pulley will be replaced or a new tensioner will have to be purchased...........

  3. #48
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Gates 3-rib tensioner pulleys in RockAuto, $23. Your car, engine, "belt drive".

    Pictures in my albums. Been there, done that (pulley only).

    If you even remotely suspect that pulley does not turn like greased velvet, change it. Same with the accessory belt drive idler and tensioner pulleys.

    EDIT: Instant gratification = NAPA

  4. #49
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    The water pump tensioner pulley looks new, but it felt "notchy" when rotated by hand.

    I wasn't too pleased with that. I didn't come this far to have something like that possibly cause a catastrophe. It'll be changed or the whole tensioner is coming out.

    Thanks for the Rock Auto suggestion Sub......will check it out.

    I edited my post ............. Sub

  5. #50
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    I love this thread...


    Sent from AutoGuide.com Free App

  6. #51
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Well,

    I installed the intake cams back onto the heads. The left side went on like butter. The right side due to the cam profile is trying to open the valves on cylinder number 5.

    If I rotate the cam, it's attempting to open another set of valves. When I installed the left side, the cam profile never got on the "nose" in any postion for it to open the valves, so I just took my time and re-installed the caps back in their corresponding positions.

    The right however will need some ingenious installation techniques that I used to take it off.

    I removed the AC Delco plugs that someone must have put on with an impact gun...... They looked damn near brand new.

    Now I'm getting ready to reinstall the chains and tensioners......
    CadillacLuke24 likes this.

  7. #52
    ternstes is offline Cadillac Owners Fanatic
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    It's the exhaust cam, isn't it? Just install it slightly off the right angle mark to the head surface and then when you get ready to put the sprockets and chains on, rotate the cam slightly to line it up to its proper position. Also, if you are lucky, the cam will "stick" in that position and you won't have to hold it with a wrench while you put the chains on. A helper to hold the cam in position would be nice...

  8. #53
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Ternstes,

    Ironically, the exhaust cams weren't removed. I removed the intakes, they were the easiest to access at the time. The right side/ rear intake cam will be a little finicky but I will prevail.

  9. #54
    ternstes is offline Cadillac Owners Fanatic
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    Did you remove all the sprockets for all four cams? It is a bit challenging to get the chains on if the sprockets are on the cams already. Maybe it's the intake cam that needs slight adjustment on bank 1, it has been a while. In any event, just use a wrench on the cam to hold it at the right angle position while you install the sprockets and chain. Temporarily zip ties can help hold the chain to the sprockets while you get them in position. Any more pics you can share?

  10. #55
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Well,

    The cams, chains , tensioners and guides are all back in.

    I wasted more time trying to figure out how to get the right side/ rear guide back in than setting the timing. The timing was a breeze.

    I guess my experience with quad 4's made this a walk in the park.

    I unfortunately had to remove the right side intake cam again to install the guide but once in, it was smooth sailing.

    Rotated the motor manaully a few turns to make sure everything was kosher........

    We're on the way......

  11. #56
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Are servicing the transmission (solenoids etc) while it's out?

  12. #57
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Yes Vincent,

    Changing the main filter and servicing the unit.

    I believe Eldorado_Red stated the vehicle ran fine before he parked it for the headgasket issue.

    When I remove the side cover we'll see what's going on in there and the state of the fluid.

    All the motor mounts are getting changed also.

  13. #58
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    Sweet, should run forever after all is said and done
    Eldorado_RED likes this.

  14. #59
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    That's what I'm shooting Vincent.

    For it to run forever........
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  15. #60
    Nick Cee is offline Cadillac Owners Member
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    Re: Drilling and Tapping The Northstar V8......my personal experience so far.

    How's it going, is it running like a Caddy should? I'm saving for my studs, got caught up in the bottom end and it got expensive..

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