KNOCK questions

[86BGN]

How much knock retard do some of you get between gears?

When data logging, what degree of knock retard should I be concerned about look like? 1 degree, 2 degree 3,4,5,6?

Just for one frame? All through the rpm range?

Thanks in advance!

 

[86BGN]

??

 

[bruce]

Originally posted by 86BGN
How much knock retard do some of you get between gears?

Just for one frame? All through the rpm range?

Idealy, none.

One Frame?, what kind of scanner?. If your using an ALDL scanner, one frame is about one sec., depending on your setting with DS, it could be considerably less.

If the Knock instantly recovers after a gear change, and is only a couple degrees, it's probably not hurting your engine.

Might just be a sign of needing a looser converter.

 

[XLR8]

I usually don't get any, BUT my car seems to run its fastest when I get 0.7 KR at the 2-3 shift and I am not worried about 0.7 KR.

 

[86BGN]

Sorry, I am using Turbo Meter and here is what a data log looks like. I was comparing it to a Casper’s audible knock gauge. The gauge didn’t even make a chirp?

IAC Coolant MPH RPM Load TPS BLM O2 MAF Retard(deg)
62 152 41 3650 231 4.33 129 0.793 165 6.92
62 152 41 3650 240 4.33 129 0.785 219 6
62 154 99 4350 240 0.43 118 0.152 219 3

If this makes any sense

 

[bruce]

Originally posted by 86BGN
Sorry, I am using Turbo Meter and here is what a data log looks like. I was comparing it to a Casper’s audible knock gauge. The gauge didn’t even make a chirp?

IAC Coolant MPH RPM Load TPS BLM O2 MAF Retard(deg)
62 152 41 3650 231 4.33 129 0.793 165 6.92
62 152 41 3650 240 4.33 129 0.785 219 6
62 154 99 4350 240 0.43 118 0.152 219 3

If this makes any sense

Turbo Meter?.
Never heard of that one. But, by the looks of it (all of 3 frames ) it looks like it's probably one that plugs into the ALDL connector. In that case, your at almost 7, and the max most chips can go to is 12. So with any thing going wrong, you could overwhelm the K/S system, and really detonate the motor.

I'd triple check all the usual suspects for it being false, and try another chip.

 

[86BGN]

I know, I wish I had more to look at but I will get more frames when it gets nice out and can drive the car. I had the alarm on the software set to start data logging when knock is higher than 0 so I didn’t get the whole run or much that happened before that. In the frame after that I had let off the gas so that wouldn’t help much. I just can't seem to understand why the gauge doesn’t sense that. That is with the factory chip, I think I am going to try a turbo tweak chip.

Thanks for looking

 

[salvageV6]

The car appears a bit lean for pump gas.

I'd prefer around 810 O2's.

Woulda thought you'd hear a beap or two with that much KR also.

Not staying in it was a good thing however.

I think you will do better with the new chip.