I want to use a more accurate method of positioning individual pistons at TDC.
I'm afraid that marking the crank pulley every 120* won't be accurate enough.
I'm wondering if the marks shown below are, in fact, 120* away from the marks used for cylinders 1&6.
They seem to indicate TDC for cylinders 5&2. Right?
If so, is there a trick, or another mark for verifying TDC on 3&4?



300, I6.
Thanks for tips or advice,
Murph.

 

If you're real **** about it, just go off of the distributor. Roatate engine to TDC #1, adjust valve, rotate engine to line up rotor to 5 then 3, then 6, then 2, and finish on 4.

Your done.

Josh

 

I just finished adjusting my valves.
The part I wanted to share is how I measured the 120* between TDC of each cylinder.
I was turning the engine over with a breaker bar on the crank bolt... a hex bolt.
Measuring the placement of the wrench for each turn was the key.
Two turns of the hex bolt = 120*. It turned out to be very accurate.

Since there was only one reply, I thought I'd reply myself.
Hope this helps the next guy.

Murph.