Today we can dig into the timing components. Remove the timing cover using a 3/16″ Allen head tool. The points cover does not require removal to perform this step.
With the cover out of the way, we can remove the timing chain tensioner using a paper clip to hold the tensioner in the compressed position. Two Torx bolts and off it comes. To remove the sprockets, I used a Delrin Cam Gear Holding tool available from Georges-Garage part # 320620. Works perfectly without damage to any components. Both sprockets are indexed and can only go onto their respective shafts one way (Timing marks facing out).
In the photos below we see the cam support plate with the timing gear set removed. Over each of the two cam shafts are spacers that must not be swapped and need to be returned to their respective shafts. A closer look reveals each shim (spacer) is imprinted with the shims thickness. A picture here is a life saver, should you, by chance, mix them up or drop them unintentionally. Notice the snap ring is on the front head camshaft only. It must be removed to release the cam from the support plate. Again, in quarter turn increments, we loosen the 3/16″ Allen Head bolts until we can spin & remove them by hand. The two right pictures below are close ups of the shims and their respective thickness.
Once the Allen bolts, snap ring and shims are removed, we can gently tap the cam support plate with a mallet and it will separate from the inner timing cover.
Now we’ll take a look at the inner side of the cam support plate. Notice the timing marks on each of the sprockets. This will become vital when timing our new cams from the kit.
The two camshafts are synchronized with their own chain and tensioner. First step is to depress the tensioner and slip a paperclip into the hole of the tensioner to hold it in the compressed position. Then we remove the two mounting bolts from the tensioner, remove and set the tensioner aside. Next we lift the two camshafts with timing chain from the rear of the cam support plate. Then we can use our camshaft assembly tool from Georges-Garage Part# 320610 and build our new cams with timing chain. The tool consists of a base that holds each camshaft and two Delrin caps that protect the bearing surfaces when installing the camshafts. You assemble, time the cams & chain, then slide the completed assembly into the support plate, remove the caps, replace the shims and (the front cam) snap ring, and you’re done. Simple, efficient and quick.
It was at this point of the tear down that I realized I needed a VERY important tool (that I’ll mention later on) that I did not have in my possession. All that remains is to remove the old camshaft bearings but that’ll come later on also. So, now, I begin the rebuilding process while I wait for a tool to be delivered.
Continue to follow the next episode called “Installing the Piston’s, Rings, Cylinders and Cylinder Heads”.