Mike Manzo
Registered User
Ok here is the scenario...
Car sat for three years, needless to say stuff will go weird...
Anyway, at idle there is no noise and even when reving the engine...Oil pressure when at op-temp is upper 20s - 30s even (something like that)
Under load is when the "knock" happens and there is no oil pressure drop...If anything it climbs.
Now, I am trying to figure out is this lifter-related and pushrod problems or rod/piston related...
I know jack about engine internals and I admit I am probably the last person who should have entered the realm of modding this car, but I hope someone can add to what my brother in law says might be the case for both my SCs suffering the same issues with completely different situations...
Both have identical knocks, one sat for three years, one has a zillion miles on it and suffered a plugged cat for a while...
The "knocking" noise is not at a rapid pace and from what I recall from an actual rod bearing issue, the knocking noise was like, for lack of a better description, like the double bass beat from Pantera as opposed to what seems to be half-time with the RPM of the engine which is what this knocking noise is.
In what has been described to me, rod/piston/crank bearing issues where a knock occurs would be at the RPM of the engine and a rapid metal-metal beating...
What IS happening here at idle under load is akin to that of an alarm-clock pace, but a knocking "noise"...Of course this gets quicker when you step on it, but at idle at the SC typical 600rpm range in gear, its about 1 "knock" per second. What is being told to me is that a problem with the bottom end or pistons would be more crazy rapid than that.
If this is the case, then it could merely be a need for adjustment and maybe replacement of the pushrods? Like I said...no oil pressure drop at no point idling or driving hot or cold.
I plan to stethiscope the engine and see where I can hear the noise, but I gave up on both of them as toasted and bound for complete death....
I know I look like a complete idiot in this description, but at this point I could care less. I have two SCs, both with a tremendeous amount of work done to them, a crapload of killer bolt ons and this damn knocking noise! One engine supposedly dynoed at more crank horse than my Cobra and I really want to see it live...
Ha...either that or 10k takes both of them with everything and all the crap that isnt installed yet!
Car sat for three years, needless to say stuff will go weird...
Anyway, at idle there is no noise and even when reving the engine...Oil pressure when at op-temp is upper 20s - 30s even (something like that)
Under load is when the "knock" happens and there is no oil pressure drop...If anything it climbs.
Now, I am trying to figure out is this lifter-related and pushrod problems or rod/piston related...
I know jack about engine internals and I admit I am probably the last person who should have entered the realm of modding this car, but I hope someone can add to what my brother in law says might be the case for both my SCs suffering the same issues with completely different situations...
Both have identical knocks, one sat for three years, one has a zillion miles on it and suffered a plugged cat for a while...
The "knocking" noise is not at a rapid pace and from what I recall from an actual rod bearing issue, the knocking noise was like, for lack of a better description, like the double bass beat from Pantera as opposed to what seems to be half-time with the RPM of the engine which is what this knocking noise is.
In what has been described to me, rod/piston/crank bearing issues where a knock occurs would be at the RPM of the engine and a rapid metal-metal beating...
What IS happening here at idle under load is akin to that of an alarm-clock pace, but a knocking "noise"...Of course this gets quicker when you step on it, but at idle at the SC typical 600rpm range in gear, its about 1 "knock" per second. What is being told to me is that a problem with the bottom end or pistons would be more crazy rapid than that.
If this is the case, then it could merely be a need for adjustment and maybe replacement of the pushrods? Like I said...no oil pressure drop at no point idling or driving hot or cold.
I plan to stethiscope the engine and see where I can hear the noise, but I gave up on both of them as toasted and bound for complete death....
I know I look like a complete idiot in this description, but at this point I could care less. I have two SCs, both with a tremendeous amount of work done to them, a crapload of killer bolt ons and this damn knocking noise! One engine supposedly dynoed at more crank horse than my Cobra and I really want to see it live...
Ha...either that or 10k takes both of them with everything and all the crap that isnt installed yet!