98 ETC Head Gasket project started today... - Page 17
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Northstar Engines and System Technical Discussion Discussion, 98 ETC Head Gasket project started today... in Cadillac Engine Technical Discussion; Not sure how long it sat, but it wouldn't surprise me if it sat for a matter of months. The ...
  1. #241
    Faded Crest's Avatar
    Faded Crest is offline Cadillac Owners Connoisseur
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    Re: 98 ETC Head Gasket project started today...

    Not sure how long it sat, but it wouldn't surprise me if it sat for a matter of months. The stains halfway up look worse in pics than in person. They appear to be just that, stains. Cylinder walls are slick as could be other than the residue at the very bottom of each cylinder. It scrapes right off with my fingernail. I was not planning to replace the rings. I am sure they would scrub up nicely with some 00 or 000 steel wool, but I heard that steel wool was taboo on a Northstar for some reason...

  2. #242
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    rodnok01 is offline Cadillac Owners Connoisseur
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    Re: 98 ETC Head Gasket project started today...

    Steel Wool leaves micro particles behind is why it's not recommended. Better off finding a cleaner and use a rag on the cylinders. Soak the rings and or scrap em if you need to clean them, shouldn't take much.

  3. #243
    Faded Crest's Avatar
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    Re: 98 ETC Head Gasket project started today...

    I'll use some lacquer thinner. I didn't realize how soft the deposits were until I scraped some off today. Shouldn't be a problem. The pistons and rings aren't that bad. I would not have even pulled the pistons out if it weren't for my stupidity described in post #205.

  4. #244
    eyewonder is offline Cadillac Owners Fanatic
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    Re: 98 ETC Head Gasket project started today...

    Quote Originally Posted by Faded Crest View Post
    I would not have even pulled the pistons out if it weren't for my stupidity described in post #205.
    Hey - no obscenity (words like 'stupidity') allowed! I prefer to think of my own 'alternate methods of assembly' as just opportunities to find ways to do things more efficiently, the next time around.

    Cheers,
    Steve

  5. #245
    Faded Crest's Avatar
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    Re: 98 ETC Head Gasket project started today...

    Thanks for the support guys!

  6. #246
    walliss34 is offline Cadillac Owners Member
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    Re: 98 ETC Head Gasket project started today...

    I used diesel fuel and one of them 5 buck air wands with a vacum line in the 5gal can of diesel to clean up the oil stains/crud around the timing gears. It worked great, just a bit messy and i suppose the fumes are not really that great to be breathing but i love the smell of diesel! I have even found if you filter used oil through a old tee shirt, you can spray it on the underside of the car in the frame and suspension components 2 or 3 times a year for rust prevention. I had a friend who did it religiously on an old 70's Dodge van and it had no rust at all on it, that was also in the snow belt south of Buffalo NY.

  7. #247
    Faded Crest's Avatar
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    Re: 98 ETC Head Gasket project started today...

    Finally!!! Now I just need to find time.




  8. #248
    bill buttermore is offline Cadillac Owners Fanatic
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    Re: 98 ETC Head Gasket project started today...

    Your'e gonna love how slick that little bugger works.

  9. #249
    hfg1551 is offline Cadillac Owners Member
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    Re: 98 ETC Head Gasket project started today...

    I never found an answer to the question about just installing the new rear main seal before before attaching the lower block case and then tightening it into place as the main bolts are reinstalled. Will that work or should I wait until the bottom is back together and use the press tool?

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    eyewonder is offline Cadillac Owners Fanatic
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    Re: 98 ETC Head Gasket project started today...

    Only having done one N*, I would vote on waiting till after the lower case is cinched down. My one experience was using the latest, genuine GM seal.

    The inner portion of the seal is metal (at least on the year engine I worked on), and pressed over the crankshaft. The tool that I used, the latest version, forced the seal to be installed straight, not cocked, and to a specific depth - the tool stopped when it encountered the block/lower case. With that seal, I would not attempt to install it before the lower case was mated with the block.

    Cheers,
    Steve

  11. #251
    hfg1551 is offline Cadillac Owners Member
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    Re: 98 ETC Head Gasket project started today...

    Thanks Steve,

    That was kind of what I figured after reading the discussion about the tool.

    Jim

  12. #252
    Faded Crest's Avatar
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    Re: 98 ETC Head Gasket project started today...

    Jim, when I split my block, the rear main seal basically almost fell out. That's why I asked if it could be reinstalled that way. But I wouldn't try it. Like Steve said, it is pressed to a certain depth.

  13. #253
    ternstes is online now Cadillac Owners Fanatic
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    Re: 98 ETC Head Gasket project started today...

    That tapered piston ring compressor is amazing! Even upside down, it is a breeze tapping the pistons back into their bores.

  14. #254
    Glenn Delwood is offline Cadillac Owners Fanatic
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    Quote Originally Posted by Faded Crest
    Finally!!! Now I just need to find time.
    What's this?

  15. #255
    Faded Crest's Avatar
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    Re: 98 ETC Head Gasket project started today...

    If you are referring to the picture, it is a Piston ring compressor that allows you to install pistons into the cylinders. The sleeve is tapered and is the precise size to fit a Northstar piston. As you slide the piston in, the rings compress so you can slide it in. Can't wait to try it out... Just need to find time.

    Good pics of one in action here, Glenn...

    http://www.cadillacforums.com/forums...e-leak-35.html

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