Friday, July 3, 2015

Dizzy-In-'ly Simple!!

<This post is part of the 'New Engine Rebuild' project>
In the past, before I had taken any of my engines apart, I thought that if I took the distributor out, that it would be nearly impossible to get it back in again the same way and the engine would be ruined! I'm not kidding either, I actually thought that and I was so concerned about this that I thought that putting the distributor in the new engine would be difficult and need a ton of setting up and tinkering to get it right.

Well turns out it was really easy...

The first thing to do is to get cylinder 1 to TDC on the compression stroke. I checked this with the pushrods. On the compression stroke neither the inlet or exhaust should lift as the crank is advanced towards TDC. In a previous post, I concluded that the crank rotates up the front, down the back in case you were wondering

If the head was on, then I guess the only way to know which stroke you were on would be to take the spark plug out and put your finger over the hole and see when there is compression as the crank is turned.

Once the correct TDC is located, the drive spindle needs to be inserted so that it meshes with the camshaft, but it really matters which way round it goes. Looking at the picture in the Haynes manual however, gives a big clue as this is the desired orientation of the rotor arm..

So attaching an old rotor arm to the distributor, (again it has proven useful to never throw anything away) I lined up the rotor arm to where it needed to be as per the diagram and made a note of where the offset on the drive dog was. Then it was just a case of inserting the drive spindle in place so that it lined up.

After a little trial and error, eventually the correct angle for the spindle was found.

... and when the distributor was inserted the rotor arm sat in the correct position.

The final part to finish off was to attach the locking plate.

That was it really, total time from beginning to end was about 30 - 40 minutes and that included reading time, so this was nowhere near as difficult as it first seemed. I only hope it actually works in practice now.

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