Moved the post up

Was posted in the N board...... Found it
interesting enough to move it up here.
Bought this 8n Saturday. Story was it was
running poorly, and dropped off at a
heavy equipment mechanic. They never got
to it so a friend of mine bought it and
called me. We bought it, got it home and
found the gas tank had leaves and pine
straw clogging the screen in tank. Gas
flow was terrible. Thought " easy fix"
nope still wouldn't stay running more
than a couple seconds. Wife said to swap
carbs, had a freshly built one on the
shelf. When we took old one off we found
part of a valve guide in the top of it.
Off with the hood, head,
alternator,manifold, valve covers. ....
Found the problem. Also found the other
parts. One was up by the #2 cylinder area
about to drop back into the manifold.
So.......what tools will I need to put
this back together? Watched Rachel on a
video and she had a spring
compressor..... And she used lapping
compound with a special tool. Also
opinion on where to get the parts? She
mentioned adjustable lifters??? If
replace valves how do you adjust them?? I
don't see a way on the ones we took out.
'47 8n......



Also 6 of the 8 valves were missing the rubber ring around them??

You have an early version. The ends of the valve have to be ground to increase the clearance, or the face ground to decrease the clearance.

The valve, guides, and lifters can be upgraded to straight valves, one piece guides, and adjustable lifters.

On other valve in block engines you had to grind the end of the valve off to set clearance. Did not take much so would want to mic it then grind and remic.

How do we swap lifters?

If the engine is worth rebuilding, I would upgrade it with adjustable lifters. Parts kits are readily available.

Buy the tools for holding the tappets in place in order to adjust.

Only intake guides should have seals.

I certainly would not put much money into the engine prior to thorough inspection.

Dean

Pistons have very little wobble. Sleeves have just a hint of a ridge at the top, if you try hard you can catch a finger nail on it. Poured transmission fluid on top of each piston last night. Hasn't leaked down any.....

After the valves are out, they should come out the side, from behind the cover on the side of the block.

Adjustable really are nice. Makes assembly easy. Spring compressor or 3 hands and it goes back together easy.

They just pop out? Lifters?

They will come out the top.

Might be carboned up, need some pulling and twisting.

O all the N series Fords I have messed with only the intake valves have the o-rings. If you need any of those parts I have an 8N parts tractor here

Popped one right out!