TT chip and octane

[reality]

Steve= On the knock sensor should that be in/lbs?

[Steve Wood]

On line, everything says ft lbs. I will try to find it in the manual to double check. 14 inch lbs is really light..

[Steve Wood]

could not find it in the manual.  GNttype says 14 ft lbs

Lawrence was the one that told me hand tight...of course, he also said to put a couple of wraps of teflon on it if it seemed overly sensitive and most everyone laughs that one off...except for me and Lawrence LOL

[Shimy87]

thats funny, I was going to do the teflon wrap

[Steve Wood]

Join the club lol

[reality]

ft lbs seem to be correct
  Sorry

[Steve Wood]

no need to be sorry.  Someone needs to look after me!

[gnonyx]

 A while back I asked an member for torque spec:
http://www.gnttype.org/techarea/misc/torque.html
You're right Steve, Knock Sensor to Block- 14 Ft-Lbs.

[Shimy87]

Its a real good time trying to use a torque wrench with that bracket in the way....I went with Steve's hand tight specification

[Shimy87]

turned up the boost, adjusted WOT fueling to 135, made a test run, attached files. was only pushing 10 lbs boost so turned up again, this time to 15 for a much shorter run. I think I put knock sensor back in to tight?? logs show knock but O2s are good....I think its false and I need to remove/reinstall knock sensor? Maybe replace it???

[Steve Wood]

It was too rich, this time.  Drop the 135 to 130 and try it again.  Some times being too rich will cause false detonation imo.  I am looking for about 790 mv at the end.

That sure looks like false detonation to me.  Again, real detonation starts low and gets higher each frame until you let off.  Yet, the sensor is hearing something....s ome noise is triggering it.  AS I said, this is more a ripple.  It will not hurt to try another sensor...usual ly they are pretty consistent but I have heard of them not reading right.  You could try swapping the electronic spark module between the cars as well.  Some times they have stopped filtering the signal like they should.

Once Conley put a 221 deg cam in mine.  Around 2800-3000 rpm it pulled timing like mad.  Ease it up to 3200 rpm and then jump on it and the car sounded like a P47 winding up for a low speed pass.  Best sounding buick I ever heard.  The valve train was making a noise and the sensor was hearing it.

[Steve Wood]

Some versions of the 206 cam were reported to make a lot of valve train noise if I recall.

[Shimy87]

I will try that and report back!! Thanks

[Shimy87]

okay, didnt have time to swap modules yet. I did remove coil and bracket and torqued knock sensor to 14ft lbs. reduced fueling to 130, attached 2 logs.

I dont know what to think as I think I can hear timing rattle with windows open as i did the runs but O2's on these runs are not lean. ?? I need to get the module switched

[Steve Wood]

That still does not look like real detonation to me.  But, whatever you are hearing would appear to be tripping the knock sensor/timing retard.

Maybe look at all the plugs and see if one looks noticeably different from the others?

Post the logs for Eric to look at?