I having been running a medium priced mechanical gauge the last 10 years off the pressure switch location but tossed the nylon line that it came with and went with some nice soft copper to avoid any potential leaks. The copper line provides good insurance.

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Aggressive Ted

http://cid-32f1e50ddb40a03c.photos.live ... %20Swinger


74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG

Have you done the rod knock test I described yet.
That test can isolate the problem to one cylinder.
it can reduce the noise of broken rings ,piston slap and big end knock
then do further tests on that cylinder if a noise reduction is evident.
Also dont forget that oil pressure can be low due to excessive bearing clearance ie worn main /big end bearings.
Forget the conspiracy theories for now, and concentrate on diagnosing the problem,not guessing at it.
you might also want to grab yourself a mechanics stethescope.Good cheap tool for this problem.

Brendan

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1963 AP5 Valiant 225 PB 904 Stock except extractors & 2 1/4 inch exhaust.


1962 S series valiant 225 PB auto. factory every thing. Full restoration job.
Currently on hold till AP5 is on the road.

I was busy all day yesterday. I will get to these tests soon. I will time the engine first.

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Leela: 1970 Dart 225 CID
Coulmn Shift TorqueFlite
7 1/4" Axle 2.76 Gears

Go ahead and save that weird car, the sedan, the 6 cylinder, the C-Body. If you want a big block musclecar and that's all you care about, your missing the point.

Sorry ,I did not mean to be pushy ,Im just curious about the noise ,I have a thing for Knock Knock Threads!
Also earlier you stated you have a leaky head gasket.
By this do you mean the rocker cover gasket ,or the actual head gasket that keeps the compression in?
If you have a leaky head gasket ,and it leaks coolant into the oil,the oil can turn acidic and eat your bearings!
Brendan.

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1963 AP5 Valiant 225 PB 904 Stock except extractors & 2 1/4 inch exhaust.


1962 S series valiant 225 PB auto. factory every thing. Full restoration job.
Currently on hold till AP5 is on the road.

No offense taken. Don't worry about it. I got the timing light and it works great. It irritates me that people cannot read a timing light. I was told 7 ATC but yesterday I got 12 BTC. What the hell? The head gasket is leaky. Oil shows no signs of coolant and all cylinders all have 100psi.

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Leela: 1970 Dart 225 CID
Coulmn Shift TorqueFlite
7 1/4" Axle 2.76 Gears

Go ahead and save that weird car, the sedan, the 6 cylinder, the C-Body. If you want a big block musclecar and that's all you care about, your missing the point.

if i KNEW i had a leaky head gasket (and particularly if it were knocking), i think i would pull the head. note: this may lead to pulling the engine, depending on what you find.

how do you know the head gasket is leaking? depending on the leak location, you could leak coolant into the cylinder, which can cause the engine to hydrolock and create serious damage. in all seriousness, if the head is leaking it needs to be repaired pronto.

There is not combustion or coolant leakage. The leak is of oil to the outside. I need the car until the end of July to serve daily driver duty then I need another car. The car will be blown apart and restored after retirement.

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Leela: 1970 Dart 225 CID
Coulmn Shift TorqueFlite
7 1/4" Axle 2.76 Gears

Go ahead and save that weird car, the sedan, the 6 cylinder, the C-Body. If you want a big block musclecar and that's all you care about, your missing the point.

Engine is now happy at TDC at 670 rpm

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Leela: 1970 Dart 225 CID
Coulmn Shift TorqueFlite
7 1/4" Axle 2.76 Gears

Go ahead and save that weird car, the sedan, the 6 cylinder, the C-Body. If you want a big block musclecar and that's all you care about, your missing the point.

I recently had a noise in my engine like you describe.
Turns out two of my flex plate to torque convertor bolts were loose.
One was halfway out and the other was finger tight.
Tightened them up and no more clacky tappy rattly knock knock sound.

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DRIVE IT,DON'T HIDE IT

This weekend I will pull the inspection plate and torque them to be sure. Thanks

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Leela: 1970 Dart 225 CID
Coulmn Shift TorqueFlite
7 1/4" Axle 2.76 Gears

Go ahead and save that weird car, the sedan, the 6 cylinder, the C-Body. If you want a big block musclecar and that's all you care about, your missing the point.