Quick log. some knock, new motor

[Gamble97]

Why do I have some knock between 2-3k rpm and I'm only at 20% throttle? I don't get it.
Anyone have any suggestions on if I should change anything?

 

[donmagicjuan]

I can't view your log file, but high knock counts at part throttle (repeatable only at certain RPMs) are usually indicative of phantom knock. Possible sources are lifters, valve events, exhaust leaks, an overtorqued knock sensor (have you recently replaced this?), crankshaft pulleys, and so on. Isolating it can be a pain. The best way to determine whether you have phantom knock or the real deal is to throw some octane at it. If a little 100 octane or so doesn't cure it, then it's likely not real.

 

[Gamble97]

I can't view your log file, but high knock counts at part throttle (repeatable only at certain RPMs) are usually indicative of phantom knock. Possible sources are lifters, valve events, exhaust leaks, an overtorqued knock sensor (have you recently replaced this?), crankshaft pulleys, and so on. Isolating it can be a pain. The best way to determine whether you have phantom knock or the real deal is to throw some octane at it. If a little 100 octane or so doesn't cure it, then it's likely not real.

I thought dsmlink got rid of phantom knock. It goes up to 0.7knock from 2-3krpms and goes wayyy lean. I always use 93 octane, but I'll try some 100 next time I fill up. Also, the knock sensor was moved from my 97 block to the 95 block that is in my car right now. I have the new revised lifter, the crank pulley is the same, although there is a very little piece missing from one part of the edge. I'm going to replace this soon. I am 99.9% sure everything on the exhaust is tight, but I'll double check. So does it go lean because of the knock? I also find it hard to believe that it goes to 16 or 17ish:1 lean when it's between 2-3k rpms. That doesn't show on this log, but I can get one tonight. This is what it shows on my aem uego, but on this log it's still in the 15ish area.

 

[donmagicjuan]

I don't use DSMlink, but from what I understand, the AFR you get from it is a calculation, not a measurement from the O2 sensor. I wouldn't count on the two tracking with each other 100%. Without being able to see your log, it's difficult for me to offer advice. I think it would be better if someone with the right software came in and posted some thoughts after reviewing the data. If no one shows up, I'll work on getting some more information from you to work with.

 

[Gamble97]

Great thank you. If not the dsmlink software is free to download if feel like doing so.

 

[donmagicjuan]

Interesting, I wasn't aware of that. When I have more time I'll look into familiarizing myself with it then.