[Gmecm] Getting rid of False Knock?

[Brien Tourville]

I would look into Isky Rev Caps - as these will
preload the Roller Rockers - taking up the slop.

It will also keep everything from the Roller Rockers
on down to the lobe - in contact with each other -
by removing the  'tossed time' that the lifter
spends while the valve spring is trying to
push everything back together and close 
the valve at the same time.

    Brien.
NEW YORK


   
 	Wed, 23 Mar 2005 22:26:46 -0500 (Eastern Standard Time)
From:           	"Cornel Hacke" <c.hacke at pppoe.ca>
Subject:        	Re: [Gmecm] Getting rid of False Knock?
To:             	<gmecm at diy-efi.org>
Send reply to:  	


                                 
                                  


I installed gold race 1.6:1 RR on my LT1 last yearand 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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             Brien.
         NEW YORK
   eagle registry #501
eagle kammback registry