2.55 Pulley Getting KR *Update* - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-28-2007, 06:24 PM   #11
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.055 for one heatrange colder. Smaller isn't better on your setup.
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Old 08-28-2007, 09:29 PM   #12
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Ryan.. we are agreeing.. Kinda.

See at 1-2 degrees the car seeing knock and pulling timing. You are seeing knock. Knock is detonation. I say tune and rid yourself of it. Bill says at the worst..that'* ok for him. You don't get on your car on the hottest nastiest day. You treat it nice and then it'll never see the KR.
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Old 08-28-2007, 11:31 PM   #13
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Yea i know.

I did some more testing tonight. 70*F out.

2nd gear im getting 2-4 and saw 6 once at like 55mph+ and at like 90%+ throttle.
if i keep it not floored i get 1 or no KR.

first gear i get non. saw 1 once.

so there is something still.... and i know im getting Belt slip now i saw my Boost drop when i was holding steady.
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Old 08-29-2007, 02:00 AM   #14
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In those conditions, for a daily driver, that'* WAY too much.

Even for my toy, I wouldn't tolerate that for much longer than the second scan run to verify the data.
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Old 08-29-2007, 09:28 AM   #15
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Yup, thats what im going to do tonight.

I for that i knocked off two of my Vac lines going to my air mixer when i did the spark plugs so lets hope that did something.

if i still get it then im going to go back to the 2.8" for now until i can track down the KR.
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Old 08-29-2007, 09:39 AM   #16
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Your 12 year old vacuum hoses should have already been replaced. How about you replace them since nudging one lightly shouldn't disconnect it.
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Old 08-29-2007, 09:43 AM   #17
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Yea i know.

I guess i just have to goto advance and buy like 2 feet of each size so i have some for ever line
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Old 08-29-2007, 09:33 PM   #18
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Ok after plugging back in some vac lines that fell off... Today on the way to Advance i tested the KR again.. Back to the way it was non in 1st and a little in 2nd. 1-2... and i really had to almost floor it or floor it to make it do it and then a few time i floored it, it went away.

So while i was at advance i got 2 feet of 5 diffrent size Vac lines ($2.72) on charged me for the cheapest one. and i replaced 3 lines/ peaces so far.

There was one like that plug in to something on the SCer that like fell off as i pulled it. and then i replaces one fo the couplers above the Trans Mod and then one of the Air Mix lines.

So im going to wait for it to get like in the 70'* and then check KR again.
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Old 08-29-2007, 09:44 PM   #19
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You want to test for KR in hotter conditions than 70'*.
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Old 08-29-2007, 09:45 PM   #20
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Want me to come over and test it tomorrow while your working?
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