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Knock question

Old 06-14-18, 07:36 AM
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Knock question

Hello everyone,
I recently got my motor rebuilt (about 3 weeks ago) and now the car is running again I installed a power FC so I could see whats going on under the hood. I have been running through the break-in process and I'm seeing knock is not a lot but i do see it, normally it's a pin that shows up on the monitor sometimes its a bit more. my question is; do these motors normally knock or is there a normal amount of knock allowed? any help would be great because I'm freaking out seeing knock as I know that the motor doesn't really like that.
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Old 06-14-18, 05:37 PM
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What numbers are the pfc registering as knock? And I'm assuming this is all in vacuum as you're in break in?

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Old 06-17-18, 06:44 AM
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Originally Posted by Skeese View Post
What numbers are the pfc registering as knock? And I'm assuming this is all in vacuum as you're in break in?

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Hey for the delay, the most knock I have seen is about the first line in the graph in pfc not sure what that would translate to in numbers. Yes, this is all happing in vacuum while getting up to speed with traffic and while cruising it normally happens from idle up to 2200 rpm.
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Old 06-18-18, 07:18 AM
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You won't actually be detonating down there, that's just engine noise. Seeing pfc knock readings above 50 or so is where you should begin to worry
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Old 06-18-18, 07:56 AM
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ok great, thank you so much!! I really appreciate it
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