tune up update (with pics!) - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-04-2004, 08:06 PM   #11
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Quote:
Originally Posted by Rogue
What kind of plugs did you put in? If your changing your pulley and doing a cai i would recommend 1 range cooler plugs and a 180 T-stat. Looks good to me. Aren't the back 3 a pain in the A$$?
I had planned on the pulley change and got the NGK one range cooler (i forget the # like TR55 or something?), and the thermostat will be done too. The back 3 weren't all that bad only #6 fought me all the way, back 3 probally took me about 30-45 min all said and done? But then again I'm used to changing them on boat engines at my dads shop in which i'm generally wedged in some bildge upside down . Thanks for the advice with the seperators! I was unaware of the crossfiring and voltage leaking.
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Old 04-04-2004, 08:08 PM   #12
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Originally Posted by Kennginn
very nice job on the tune up very very clean and i didnt know that we had factory ngk'* makes me wonder did i go wrong with the 41-940 ac delco platinum plugs???
When i had my 99 GTP I had read a post on the GP forum somewhere about the 3800s with NGK plugs from the factory, they were a mistake and shouldn't have been put in or something and were not the right ones to begin with. I'm sure the platinums are great. The factory NGK'* were totally gapped out though some of them were pushing a gap of 70.
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Old 04-04-2004, 09:02 PM   #13
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I think the problems with the factory NKG'* are the little platinum square that it fused to the top electrode. It sometimes breaks off and does valve damage. These new TR55-IX I'm using now only have an Iridium center electrode, so there'* nothing to break off.
Ya, when I replaced mine with far less mileage than yours, the gap was up to 65 thou on all of them.
NKG actually claims that they are 1 1/2 ranges colder than the stock ones.
Be careful that you don't go too cold until you do some more mods, like a smaller pulley or they may foul. Check them after a while to be sure.
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Old 04-05-2004, 07:42 PM   #14
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So when you change the coils you dont need the ignition module?
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Old 04-05-2004, 10:22 PM   #15
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Nope, they just fit right on.
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Old 04-06-2004, 01:33 AM   #16
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Looks awesome under there!!!

Welcome to Club MSD also..


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Old 04-06-2004, 09:54 PM   #17
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Whoa. That must be a series 1 Matt93. Hardly any wrap on that SC. No wonder an oversized pulley works for you guys more effectively than the series II where the tensioner is on the other side and there is at least 30 degrees more wrap.
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Old 04-06-2004, 10:03 PM   #18
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The coils are very easy. I've changed out about 10 of them lately on my car. None of them stuck to the ignition module.
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