What is the purpose of the flywheel timing mark?
What is the purpose of the flywheel timing mark?
A timing mark is an indicator used for setting the timing of the ignition system of an engine, typically found on the crankshaft pulley (as pictured) or the flywheel, being the largest radius rotating at crankshaft speed and therefore the place where marks at one degree intervals will be farthest apart.
Where is the timing mark on a Chevy flywheel?
Not sure where you expect to see the timing mark on the OD of the flywheel. The mark is on the front face of the flywheel and the only place you can see it is through a hole in the bellhousing just above the starter. The firing order is 153624 with 1 being at the front of the engine.
How do you set the timing on a 54 6 cyl 235 CI?
See the USA in your Chevrolet! You do not say what year 235, that would help a lot. I am familiar only with the stuff up to 54 but those engines are timed in the same manner as the earlier 216s, there is a BB in the fly wheel which is the timing mark.
Can a flywheel extractor be used to set ignition timing?
With the points open at their widest, the mechanic should set the required gap. However, if the points are badly pitted the mechanic should replace the points; a flywheel extractor will be required for this job. With the contact points’ gap set, the mechanic can turn his attention to the ignition timing.
Where are the larger holes on a Willys flywheel?
The larger holes in the crank flange should also be at 9 & 3 o’clock. It’s possible that Willys did not always machine the exact same holes during manufacture, but as long as the relative position of these larger holes is the SAME on both crank & flywheel, then the timing marks are correct.
With the points open at their widest, the mechanic should set the required gap. However, if the points are badly pitted the mechanic should replace the points; a flywheel extractor will be required for this job. With the contact points’ gap set, the mechanic can turn his attention to the ignition timing.
What should the number 56 be on a flywheel?
If you have a 168 tooth ring gear on your flywheel, Substitute the number 56 wherever you see a 46 above. It is also a good time to look over the teeth to make sure the starter will engage properly. If you see excessive wear, it may be a good time to remove your ring gear and turn it over, or purchase a new one.
Are there two different flywheels on a 235 engine?
Most owners do not realize there are two different flywheels that are possible on your 1954-1962 235/261 engine. This matters a great deal and you should be aware of which one you have. Since the 1942-1953 216 engines have flywheels that are totally compatible with the newer 235, many folks opted to go with the flywheel off of their old 216.
Why are flywheels only 6 volt in 1955?
The reason why has to do with the trucks system voltage and the Starter. The old flywheels have a 139 tooth ring gear and all Starters until 1955 were 6 volt. They also have a 6 volt starter drive gear that only engages in a 139 tooth (4 teeth per inch) ring gear.
