Rod knock? Lifter? Flywheel?
11-23-2018, 03:30 PM
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Car: 1988 camaro
Engine: 5.7 Tpi
Transmission: Manual
Axle/Gears: 3.42?
Rod knock? Lifter? Flywheel?
Oil pressure is at 60-80 psi, I haven't torn anything apart yet just wanted some opinions on what this noise could be . It seems to be a little faster than what a rod knock would sound like..
Last edited by LastThirdgen; 11-23-2018 at 03:34 PM.
11-23-2018, 06:04 PM
#3
Re: Rod knock? Lifter? Flywheel?
That doesn't sound like valve train. Can you feel it in the clutch pedal or shifter? Does it change in gear with the clutch in? From the vid, I'm thinking TO bearing, flywheel/clutch or transmission. Could be exhaust but sounds more mechanical to me.
11-24-2018, 08:30 AM
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Car: 1988 camaro
Engine: 5.7 Tpi
Transmission: Manual
Axle/Gears: 3.42?
Re: Rod knock? Lifter? Flywheel?
Originally Posted by red rock
Sounds like an exhaust leak.
11-24-2018, 08:32 AM
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Car: 1988 camaro
Engine: 5.7 Tpi
Transmission: Manual
Axle/Gears: 3.42?
Re: Rod knock? Lifter? Flywheel?
Originally Posted by PaulyC
That doesn't sound like valve train. Can you feel it in the clutch pedal or shifter? Does it change in gear with the clutch in? From the vid, I'm thinking TO bearing, flywheel/clutch or transmission. Could be exhaust but sounds more mechanical to me.
Last edited by LastThirdgen; 11-24-2018 at 09:21 AM.
11-25-2018, 08:13 PM
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Re: Rod knock? Lifter? Flywheel?
That's at crankshaft speed. Rod, main bearing, bad crank damper, flex plate, stuff like that.
Not a valve train or exhaust issue.
Could be an accessory, esp smog pump: you can easily troubleshoot for that by removing the belt.
Wouldn't hurt to localize it to a region of the motor. Top/bottom? Left/right? Front/rear? etc.
Take a piece of heater hose and STICK IT IN YOUR EAR. (I just LOVE telling people to do that!!!) Probe around with the other end, being careful of course to avoid moving parts that can move on their own without warning like cooling fans; find the source.
Not a valve train or exhaust issue.
Could be an accessory, esp smog pump: you can easily troubleshoot for that by removing the belt.
Wouldn't hurt to localize it to a region of the motor. Top/bottom? Left/right? Front/rear? etc.
Take a piece of heater hose and STICK IT IN YOUR EAR. (I just LOVE telling people to do that!!!) Probe around with the other end, being careful of course to avoid moving parts that can move on their own without warning like cooling fans; find the source.
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