The Construction Diary
It's a new year and a new life!
I drilled new spark plug holes in the engine tin, trimmed off an inch so make the driver-side tin
to fit the engine compartment opening after shifting the engine over when centering it,
fitted the fan housing, put the tinware on, bolted on the alternator, adjusted the cooling flaps,
and discovered where the thermo timing switch went.
While preparing photos for this page, I discovered I mislabeled cylinder 3 & 4,
which meant I might not have the engine at TDC!
Big problem for the distributor!! But how could that be?
the distributor key was at 12 degrees and the #1 rocker arms were both closed when I rocked the crankshaft.
Lots of reading later, and I learned a new term: "TWADDLE."
That is when the rocking motion of the arms overlap with one closing and one opening.
There is a brief moment when they are stationary and equal.
And THAT I what I was seeing on #3!
So I buttoned all the tin up and was back to where I started.
The coil posed a fit problem. Maybe the newer ones are slightly larger in diameter, but the bolt-down strap wouldn't bolt down.
First the retainer bolt hole was stripped, so I tapped a new one, going from an M6 to and M8.
Then I ground down the cast fins on the fan housing where the coil rested so the strap would bolt down. It worked.
Then on to the intake air distributor. I think it bolts to the engine housing using two case bolts.
But I want to be sure before undoing those bolts.
Then I scraped out gunk from the EGR valve and wondered if some of that was old seals.
I learned that the EGR is a hard to find part. And needed to pass emissions on a 1977 engine. More research.
So many little parts that I am missing.
Group 42-1, 6-7/8"x6-7/8"x9-1/2"
Check back for more progress!
(L) The fan housing and alternator in place
(C) Confirming TDC - rocker arm positions for cylinder 2 (left) and 1 (right).
At TDC, #1 rocker arms are both holding steady in the same postion and don't move when the engine is rotated.
(R) And rocker arm positions for cylinder 3 (left) and 4 (right).
When #1 is TDC, #3 rocker arms have moved in opposite directions.
But at the moment of #1 TDC, #3 rockers "overlap", or "twaddle". Yes, that is the word for it.
That means #3 rockers are in the same postion. They are and rotating the engine reveals their opposite movement.
(L) Checking the angle of the distributor drive key . . .
(C) But the dizzy won't insert when the rotor aligns to the alignment mark on the distributor edge.
(R) The engine tin is where the vacuum can wants to be.
(L) Here's the problem with the engine tin when it shifted fter the engine was centered.
The answer is to cut about one inch off the driver side.
(C) Side view - upper cooling tin in place and attached to the block and fan housing
(R) Front view - cooling tin
(L) The rest of the top tin in place