1,000-Mile Road Trip

[JerseyHarold]

Does the noise change if you step on the clutch?  May be loose flywheel or pressure plate.

[Joe Flanagan]

Thanks for the suggestion, Harold. I haven't checked that yet but will when I get a chance.

[Joe Flanagan]

Not clutch related. Plan for tomorrow: Pull the valve covers and have a peek inside. Also will see if I can isolate the sound by pulling wires and using a mechanic's stethoscope. Last resort is to pull the head.

[moose]

Joe give me a call, I've got quite a stash of parts and you are welcome to anything.  I've also got a trailer if we need to bring it to my place to work on it.

[Joe Flanagan]

Wow, thank you Moose. I'll give you a call tomorrow AM

[moose]

I'll be up by 6:30, and here most of the day.

[Joe Flanagan]

OK. I'll likely be up early, too.

[greg g]

Moose is good people.  Good luck. Here is hopping for a quick fix.

[1940plymouth]

Good luck Joe, I hope it is an easy fix

[Joe Flanagan]

Number five intake valve has excessive clearance between the tappet and the valve stem. It looks like about 1/4" and that is what is causing the noise. I tried to adjust the tappet and I have to bring it almost all the way out in order to get it even close, but that might be just where the valve was positioned when I tried it. The valve does not seem to be stuck. It travels the same amount as all the others. I talked to Moose and discussed the possibility of something being stuck in the valve seat. We are going to meet today and see what we can figure out.

[moose]

Joe, also look at the lifter bodies.  Are they at the same level?  The ones that are all the way down?  

[Plymouthy Adams]

look fort a worn cam lobe it would seem to me...or an extremely cupped lifter..

more than not a combination of both..

[Don Coatney]

Once again is there a miss fire associated with this ticking?

[moose]

Then and Now in Weymouth has a head gasket in stock, if we need to go in that direction.

[Joe Flanagan]

I will check that next. I adjusted the valve so that the noise is completely gone but I had to bring the top of the tappet pretty far out; way farther than all the others. The lifter bodies that are down all look to be about the same height but it's hard to tell.

[moose]

So what is different from the others?  I mean is the spring higher on #5? or is the valve moved up inside the keeper?  It would be good to drain the oil and check for shavings, or anything.  What does the oil look like on the stick?  anything out of the ordinary?

 

If you want to limp it to Hanover, you could, or we can wait till my trailer comes back this afternoon.

[Dave72dt]

Either the tappet and/or cam lobe has worn down or the valve and valve seat have moved up or something is lodged under the valve head.  As asked before, how much of the tappet is exposed compared to the rest of the tappets when valve is fully open and when fully closed and is it missing on that cylinder, even with it adjusted.

Edited August 18, 2015 by Dave72dt

[Joe Flanagan]

I won't know anything more about this until tonight.

[Joe Flanagan]

Just discovered that the tappet on #5 intake is worn down to about half the height of the others. I'm referring to the small piece that screws into the lifter and that you turn when you adjust the valves. The tappet on #6 intake looks pretty worn, too. They obviously need to be replaced. I'd like to see if there's any wear on the camshaft. Is there a way to determine this without actually pulling the cam?

Edited August 18, 2015 by Joe Flanagan

[Plymouthy Adams]

not really to assure the cam lobe profile on the ramps, total lift and match mate to the lifter...V-blocking the cam and sue of a dial indicator is the number one method in my book along with a timing degree wheel to read the very profile and compare....

Edited August 18, 2015 by Plymouthy Adams

[Don Coatney]

Cam lift can be measured with the head removed and using a dial indicator.

 

[Plymouthy Adams]

you can measure...but you cannot see the cam lobe and lifter surfaces to ensure that there is not a sign of wear or galling..

[Plymouthy Adams]

Joe..if your travel of the vavle is equal to the others..and you had .250 gap....odds are you have lost your interference fit of the threads tappet to adjusters and you may need only to replace tappets.adjuster combo..

[TodFitch]

You can inspect the cam lobes when the oil pan is removed.

[moose]

Joe- how hard was it to adjust those tappets?  I mean how much torque did you need to use?  I just grabbed one of my spares, and the interference on it was strong.  I had to put the 1/2" wrench in the vice to turn the adjuster with the 7/16".  It did get looser as it went out the top.  I will still need to pull the head, as there is not enough clearance to pull the adjuster out with the valve and spring in place.  Hopefully this will be what needs to be done.  I will be leaving soon with the trailer to come get the car.