Timing



Timing side of the Engine

I made an update of the points to the bakelite from the plastic feet of the points. Last a lot longer.


Timing

Wanted to make sure the pinion key was straight as it was very tight.


Timing

Plug crank end to keep oil in and later into the pressure release valve hole until ready for cover.


Timing

Sometimes it is hard to read the timing marks. The pinion mark can be very small. If a corner of the pinion nut masks this mark the nut will have to be removed again when a idler gear gets loose on the bench. A spot of white paint here helps. There is a line to the left of the pinion punch mark.


Timing

An extra pinion makes a good stop with a torque wrench. There is white paint on the pinion mark.


Timing

I took this next pic to explain that I set the timing before lowering the tappets. The brown paper with black rubber piece in the rear tappet area is paper surrounding a rubber buffer used on battery boxes to keep the tappets squeezed in the up position. This way the moly does not get wiped off. I try to set the push rods and rockers just before start up. Maybe it helps leaving it on the tappets and cams longer and maybe it will do some good. Who knows. Also, the engine is in the 38 degrees before top dead center for timing. I use a 12 volt bulb to check anything I do with a continuity light. The early timing tool is shown because I am going to try to put a split pin in the 69 tool also.


Timing



It is very important to get the correct item for the 70-4707 rubber grommet for the points wire. It goes into the case first then the timing cover butts up against it. A lot of dealers will send one smaller with the rectangular hole for the points wire. This was an original part since the early 60s. This picture shows what works and most dealers used these even from the sixties. Buy this shape.


Timing



Click on the gallery of pictures. At the bottom of the pics will be a menu to bring you back here or to the Homepage. Later in a restoration they may be worthwhile.





The next pictures illustrate a problem. The bolt that holds the AA unit into the cam is listed as E8828 which is 1/4x28UNF and is listed as 2 inches UH in the manual. I don't know about this. In the previous picture there is a small round file inserted into the cam. The next picture shows there is about 3.5ins. available to the edge of the case. I found out a 2 inch bolt was short. The earlier cams may have been able to take the 2in. The 1969 71-0042 cam I took out of this engine was definitely not as deep and would need the 2in. bolt as the part number. The production cam 70-9989 is new production and they made them long inside. I think the shoulder area had more threads. Somehow it is different and the 2in. is not long enough to seat the AA unit. The parts store I went to only had the 1/4X28X2.5 in. Use a grade 5 so the cam threads won't strip if you get stuck. If you find out that you have this problem cut the bolt off 1/4in. but put a die on it first to clean the threads. Also, the cams were made in England and very precise. The bolt should be shaved with a die and then there is no bind and it fits great. I do not know if there is an difference in the angles between English and American threads (55 or 60 degrees) or if grade 5 American varies by manufacturer. Torque of the AA bolt is 8 ft.lbs. The center picture is battery tender hookup.



Homepage

Printable Link

Previous Page | Main Page | Next Page