Another Engine Build thread stock type 1 dp (Happy Ending)

[ruckman101]

Got the bottom end fairly buttoned up, heads back on the other day, and rather than throw on the rocker arm assemblies and pushrods, I thought I would clean them up a bit and give them a look over, and found a few things that have me concerned.

The first was a pushrod.



A bit pitted. My suspicion is that it shouldn't be used. Thought about filing it smooth, but then it would be slightly shorter than the others. Maybe a burr on one of the rockers?

And then there's the rockers.



It looks like maybe a bit of pitting on the rocker where the pushrod sits. I suspect it'll be ok, but thought I would run it by folks in case there is a concern there I don't realize.

And then there is a lump on the side of the rockers my inclination is to file down.



The arm is attached through the little stands or what ever, and there is an open slot on one side that faces up, so the surfaces of the rocker that ride against that stand wore down a bit, but not where the slot is.

And finally, the valve adjust screw.



Mangled some, and an actual little chip missing from the side. Again, my inclination is to file it smooth.


Thanks,
neal

[hambone]

Rocker arms look fine.
Replace the pushrod and the adjusters however. Are they all like that? Is the head/valve area ok?

[ruckman101]

So far just the one adjuster. New heads, so valves are still virgin. You wouldn't file that lump down on the side?

neal

[hambone]

I can't really see the lump in the pic.

[ruckman101]

It's right by my thumbnails there, a little under 1/4 inch. A little bump.


neal

[hambone]

That's from those sprung retaining clips. Check the fit, it may just ride in that spot. I'm not sure I'd file that...

[ruckman101]

Started to file, but tough stuff, and I didn't want to put new cross friction on the already worn in mated area.

The bump is from riding on the mounts, beveled side out, split up. The rocker rides on that mount and wore everywhere except where the split is. I guess it will still rock as far as it's supposed to.


neal

[Amskeptic]

Started to file, but tough stuff, and I didn't want to put new cross friction on the already worn in mated area.

The bump is from riding on the mounts, beveled side out, split up. The rocker rides on that mount and wore everywhere except where the split is. I guess it will still rock as far as it's supposed to.


neal

The rocker thrust surface can be sanded smooth against a thick piece of glass and 220g automotive emery paper. You are responsible, however, for parallelitityness.
Valve adjustment screws can be filed down to a proper convex surface. If you have to go too far to clean up, however, you might find that wear accelerates due to a loss of surface hardening. Replacement screws have been too hard!! Danger of eating the valve stem tip! Ask your vendor. Pushrod can be repaired/replaced with a used one, obtained either to simply subsitute if the lengths are the same, or to harvest the steel tip end.
Colin

[hambone]

I had a replacement adjuster that was too soft and mushroomed. Crap shoot 2011. I think I have a used one around here somewhere if you need it.
If that thrust surface gets sanded, won't that affect the width of the part, causing too much slop?

[ruckman101]

I'm leaning to a complete new set of adjusters as the valves are spanking new, also. But too hard? In the past I've had a new one snap into two pieces on tightening, but too hard, eh? I'd hope that the adjusters would be engineered to fail first, like a rear hub rather than the axle stud.

I had a few new adjusters I used to replace the two bad ones I found.

Would there be an advantage to sanding the sides of the rockers?


neal

[ruckman101]

Next question, stock or HD oil pump? And the pushrods. There's a band of small short lines at one end of each. Is there and orientation, or is that merely where the end is crimped to the tube?


neal

[Amskeptic]

I had a replacement adjuster that was too soft and mushroomed. Crap shoot 2011. I think I have a used one around here somewhere if you need it.
If that thrust surface gets sanded, won't that affect the width of the part, causing too much slop?

Not if the wavy washers are all accounted for. They apply a little side force.
Colin

[Amskeptic]

Next question, stock or HD oil pump? And the pushrods. There's a band of small short lines at one end of each. Is there and orientation, or is that merely where the end is crimped to the tube?
neal

Stock pump can be made as new by sanding the cover plate smooth and checking gear lash and endplay per Bentley/Tom Wilson. How many pumps have been indicted when people are slopping these engines together with grossly loose bearing clearances or scored control valve bores?
Colin
(that was rhetorical)

[ruckman101]

Control valve bores? You mean the bores of the oil pressure relief, and oil control valves?


neal

[RSorak 71Westy]

control valve bores? You mean the bores of the oil pressure relief, and oil control valves?

Yep thats what he means