20 deg timing with 175 shot...
09-11-2013, 02:41 PM
#21
I disagree.
I think they give guys a false sense of security, they think "it didnt pick up any knock, it must be good"
No Knock sensor ever saved anyones motor.
They are useless IMO and we dont now and never have used them to tell us anything about our tune up.
We use spark plugs to verifiy what the wideband tells us.
Wideband is VERY useful.
I think they give guys a false sense of security, they think "it didnt pick up any knock, it must be good"
No Knock sensor ever saved anyones motor.
They are useless IMO and we dont now and never have used them to tell us anything about our tune up.
We use spark plugs to verifiy what the wideband tells us.
Wideband is VERY useful.
09-11-2013, 06:47 PM
#22
I think you took my thought a little the wrong way. In the event things were once spot on, then for some reason later down the road you see knock on the data logger, one should ask why and investigate.
In no way should they be used as a replacement to checking plugs, using an AFR gauge etc.. One should not rely on them to keep them out of trouble. Same reason I check plugs every pass, or even tire pressure for that matter.
But, they can tell you info. I have seen KR on motor off the initial hit but <1 second in the log it is gone. It wasn't false KR either. I was a couple degrees too aggressive on the initial timing map. Pulled 2 degrees and it was gone. Added the 2 degrees back in, it was there again. There was not enough detonation to see it on the plugs as it happed and went away entirely too fast. Did not have the issue on the dyno as it doesn't load the same. My timing table is not a flat line, the motor like a little more/less at certain rpms.
Dyno tells you one thing, but track incraments tell you more info.
In no way should they be used as a replacement to checking plugs, using an AFR gauge etc.. One should not rely on them to keep them out of trouble. Same reason I check plugs every pass, or even tire pressure for that matter.
But, they can tell you info. I have seen KR on motor off the initial hit but <1 second in the log it is gone. It wasn't false KR either. I was a couple degrees too aggressive on the initial timing map. Pulled 2 degrees and it was gone. Added the 2 degrees back in, it was there again. There was not enough detonation to see it on the plugs as it happed and went away entirely too fast. Did not have the issue on the dyno as it doesn't load the same. My timing table is not a flat line, the motor like a little more/less at certain rpms.
Dyno tells you one thing, but track incraments tell you more info.
