timing chain oiler

[41/53dodges]

okay, on 3 of the engines I tore down so far, 2 of them had the oiler for the chain altered. one was cut and soldered, the other had the end crushed with a pair of pliers. has anybody else had this? stating to seem like a common thing here...

[Young Ed]

Nope can say I've taken apart a bunch of these and never seen one messed with

[Niel Hoback]

I think the ones I have seen looked like that also. I just thought thats what they did at the factory to make it squirt a better stream. I do remember thinking it looked a little crude.

[james curl]

It has to be restricted or it would deliver full oil pressure at the start of the circuit dropping all of the oil pressure for the rest of the engine. It is just supposed to drip or trickle oil on the chain. Without the end being restricted the flow would shoot a stream of oil at 40 or more psi the size of the tube I.D. into the timing chain and sprocket.

Edited February 16, 2012 by james curl
change wording

[Niel Hoback]

Thanks, glad to hear I did some good thinking for once.

[aero3113]

You can see in the pic that mine is not pinched or plugged up, looks like it is wide open.

[Alshere59]

Well I have to agree with Young Ed and Aero. I have looked at two of these and both appear to be a reverse flare but other than that unmolested. So some restriction but not pinched etc with pliers. My pic looks the same as Aero's.

Al

[41/53dodges]

It has to be restricted or it would deliver full oil pressure at the start of the circuit dropping all of the oil pressure for the rest of the engine. It is just supposed to drip or trickle oil on the chain. Without the end being smashed flat to restrict the flow it would shoot a stream of oil at 40 or more psi into the front surface of the timing chain cover.

true,but the two I removed had been either soldered shut or legitimately smashed with pliers, so it seems somebody has modded the engines in the past. one was a reman, the other was unknown, but not original. p18 engine, but not sure when it was put in.

[Alshere59]

From what I have read in another thread it only gets oil when the cam spins and the hole lines up. So more of a quick spuirt every rotation.

[Don Coatney]

If I recall the end of my chain oiler was soldered up with a weep hole.

[Dodgeb4ya]

The original oiler tube tip and tiny 1/32" hole kinda looks like what guys have down below!

[thrashingcows]

I just removed the original one from my blown 251. No squishing, or squashing...just a very tiny hole in the tip.

[james curl]

My observation of the first bearing land on the cam on my 218 is that it has a grove that extended about 160 degrees around the diameter of the cam and an equal grove on the opposite side of the cam. The grove is deep and wide in the center of the arc and tapers in depth and width as it reaches its extremities. Oil is supplied from the hole in the cam bearing to the chain oil tube in an almost continuous supply, it varies in relation to the depth of the grove as it passes the hole for the oil supply tube. From this observation I conclude that the supply tube needs some type of restriction or the chain would receive an excessive amount of oil.

[Dodgeb4ya]

Here are the pics of the cam grooves that James is talking about and of the oiler nozzle.

Edited February 17, 2012 by Dodgeb4ya

[T120]

..Thanks for posting those clear photos

[Don Coatney]

Here are the pics of the cam grooves that James is talking about and of the oiler nozzle.

Sums it up! Thanks for the good pictures.