GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

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-   -   Well guys it's official.... (https://www.gmforum.com/general-gm-chat-88/well-guys-its-official-230174/)

willwren 02-21-2006 09:46 AM

Vig, just scan for KR, get a 180 in there, and think about exhaust. Keep out of WOT unless it's REALLY cold weather out there until you know. ;)

Keep in mind zero KR this time of year may not be zero when it gets hotter. Really glad you got her. You'll enjoy that car a bunch.

VigCS 02-21-2006 09:51 AM

Oh yeah...it's got a drilled 180 in it already.

When scanning for KR do you need to rev the motor at all?

BillBoost37 02-21-2006 09:51 AM

Scanning while you drive.

Notice light throttle, mid and wot readings. Best to have a passenger to watch for you though.

VigCS 02-21-2006 09:54 AM

What's a safe KR range to be in?

BillBoost37 02-21-2006 10:05 AM

Safe?? Not sure it's a matter of safe.

KR is Knock Retard, or the amount to timing retardation the pcm/computer gives your engine to reduce the timing and power to keep knocking and pinging from occuring. As long as you have a good knock sensor the pcm should keep you from having detonation problems from knocking and pinging.

Knock/Pinging comes from low octane fuel, exhaust leaks, and any other item the knock sensor can see and think the engine is knock/pinging.

VigCS 02-21-2006 10:09 AM

Okay, so I should just be watching for ANY kr, not a severity level?

BillBoost37 02-21-2006 10:11 AM

KR means power is being lost. And there's knocking happening.

willwren 02-21-2006 11:31 AM

And if your sensor doesn't pick it up, it could be quite spectacular.

The goal is the smallest pulley you can run with ZERO KR in the summer.

95SLE 02-21-2006 12:51 PM

Congrats on the new car.

BillBoost37 02-21-2006 12:55 PM

2 questions

1. Is it Sunday yet?
2. Are you there yet?


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