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2004-2007 Cadillac CTS-V Performance Mods Discussion, Cam Install Questions in Cadillac CTS-V Series Forum - 2004 - 2007; I would not. That is an O ring for a reason....
  1. #16
    heavymetals's Avatar
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    Re: Cam Install Questions

    I would not.

    That is an O ring for a reason.

  2. #17
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    Re: Cam Install Questions

    You can try the RTV. If it does not hold you wil steam once the engine warms up.

    (I completely forgot one rear plug when I did my head swap - scared me to death as I thought for sure I had blown a head gasket right off the bat).

  3. #18
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    Re: Cam Install Questions

    Sounds good, rubber seal it is. I picked one up while at O'Reilly grabbing a bigger torque wrench. Its almost the exact size, but a little thinner.

    That pulley needed 240lb/ft to seat....seriously? I did it in steps but I finally got it. I had to put a 2x6 against that huge support under the bumper and just throw all my weight (which isn't much) against it.

    And just to make sure, nothing goes on the threads of the new crank bolt, correct?

  4. #19
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    Re: Cam Install Questions

    There is no mention of threadlocker on the crankshaft bolt in the Service Manual

    GM Torque-to-yield bolts.

    Crankshaft Balancer Bolt
    Installation Pass to Ensure the Balancer is Completely Installed OLD Bolt - 330 Nm (240 ft. lbs.)

    First Pass Install a NEW Bolt After the Installation Pass and Tighten as Described in the First and Final Passes 50 Nm (37 ft. lbs.)

    Final Pass 140 degrees

  5. #20
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    Re: Cam Install Questions

    Sweet, thanks for the quick response. I'll get on it.

    And Brian, that 1/4 extension in flywheel worked perfect to hold the crank from turning, thanks a ton.

  6. #21
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    Re: Cam Install Questions

    The new heads and cam are installed. Started right up.

    One issue with oil though. Oil pressure picked up quickly but the oil temp was just about at 300 degrees when I looked at it (maybe 2 or 3 minutes after startup since I was watching the pressure). Even with the car not running the oil temp was bouncing between 260s and 270s. Is this a ground issue like in the stickied post? I checked the one near the hood support (I sanded it while the engine was apart, maybe I didn't do it enough?), and the 4 on the heads (one on the back of the pass head, one on the rear side of the pass head, two on the back of the driver's head). I also broke the plastic bracket for the coolant sensor so thats not connected very well, are the systems related electronically?

    Any ideas?
    If it could be a grounding issue, can I check it with a fluke?

  7. #22
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    Re: Cam Install Questions

    Well it is either grounding issue or the oil temp sensor has gone south - the oil temp cannot get to 300 degrees in 3 minutes.

    Rock Auto carries that connector for the water temperature sensor.

  8. #23
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    Re: Cam Install Questions

    Yeah, I figured that was impossible.

    Any ideas to figure out if its a ground or the sender? Or just replace it?

  9. #24
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    Re: Cam Install Questions

    Use the battery negative as the reference point and measure the voltage drop at the bolt head.

    That is with everything on, engine running.

    Try to get it less then 75mv.

    Star washers are your friend.

  10. #25
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    Re: Cam Install Questions

    I got good readings. Also, I just remembered when I was pulling the drivers head I didn't see the bottom ground initially so I lifted the head with it still attached, gave it a good tug and right below the ring it bent a little but it went right back into place. Could I have broke it between the head and where it meets up with the harness?

    Edit: Also, before I took the readings I reconnected the ground on the back bottom of the drivers head just to make sure. When I ran the car again, it didn't go over 200 while idling for a few minutes but it did bounce all around. Sometimes sitting between 104 and 107, sometimes jumping up to 190 for a second.

  11. #26
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    Re: Cam Install Questions

    If it is the ring that I am thinking of, there are two connections to it.

    You might have shredded one.

  12. #27
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    Re: Cam Install Questions

    I put in the new coolant temp sensor and took off every ground, cleaned everything with scotch bright and brake cleaner and put them back together. Doing the trick so far for some reason. Just let it run up to normal operating temp and it seemed to climb normally. Keeping my fingers crossed. Hopefully I'll get time to get the A/C system recharged tomorrow. Does refrigerant oil need to be added?

    Edit: Thanks again!

  13. #28
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    Re: Cam Install Questions

    Only if you drained it out when you emptied the system.

    If you are doing it yourself I have the gauges and a vacuum pump.

  14. #29
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    Re: Cam Install Questions

    Thanks for the offer. It was only 100 at my dealer so I went ahead and had them do it. They let me get under it on a lift so I could look over all my connections and what not. I'm not sure but I might have a tiny leak from a driver's side oil pan bolt. The one directly in front of that inspection cover for the flywheel. If so, that's not an easy fix right?

    Also, I'm going to throw in a touch longer pushrods for a little more preload. They should be here tomorrow.

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