[Gmecm] Getting rid of False Knock?

[Cornel Hacke]

I installed gold race 1.6:1  RR on my LT1 last year and the exact same thing
happened to me. {40,000} knocks in no time at all. Typically around 1700rpm
on light acceleration . The problem is still there and I have reset the lash
4 times using every conceivable method and still no avail! I had also
installed SLP headers at the same time. I can hear the RR or lifters when
the engine is running! I had also changed the valve springs (stiffer) to
accommodate a larger cam in the future. My only questions left are : what is
the correct lash for stock lifters 0lash +3/4? and can a stiffer valve
spring be used with the stock lifters or will they collapse creating noise?,
and how to get rid of the knock knocks? PS.I'm using the stock cam. 
Suggestions greatly appreciated!
Cornel
 
-------Original Message-------
 
From: gmecm at diy-efi.org
Date: 03/21/05 18:39:22
To: gmecm at diy-efi.org
Subject: Re: [Gmecm] Getting rid of False Knock?
 
Hi Mike
My 2 cents...
 
1. Make sure you are using shielded wire for the KS (shieldind grounded at
ECM end only)
2. Make sure you route the KS wiring as far away from spark plugs and wires
as possible
3. DO NOT over-torque the sensor (this an distort the peizio device and skew
it's sensitivity)
4. Do you if have the correct KS for your application? Different part
numbers have different resonant frequencies to which they are sensitive to.
5. Fix the collapsed piston! lol j/k- vbg
 
HTH
WOT
----- Original Message ----- 
From: Sixpakmak15 at aol.com 
To: gmecm at diy-efi.org 
Sent: Monday, March 21, 2005 2:00 PM
Subject: [Gmecm] Getting rid of False Knock?


Does anyone know how to fix false knock? i.e. different sensor, moving it,
ect... I'm trying to tune my LT1 but it's got a rediculous amount of knock
counts and it's really messing with my timming... Not sure what to do about
it... Thanks for any help...

Mike 



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