Here we go again.A timing question.This weekend Tate came by to time my truck.He zero out the dail gauge where the plunger at its lowest point.As we rotated the engine to TDC the plunger reading was 6.4MM.We checked the pump itself and seen the pin was also TDC.The way it looked the timing was at 16 degrees.But the truck is still low on power.I called the guy who sold me the pump and he said,when you get to 6.4MM at TDC,at that point you zero out the dial gauge and rotate the pump till you get 6.4MM on the indicator.At that point its 16 degrees.Could someone confirm this with us...THx

 

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from tech article on setting timing

10. Using the alternator nut, rotate the engine backwards (counter clockwise) 1/4 turn or
until you see the dial indicator reading stop dropping. This is the inner base circle of the
injection pump cam. Zero the dial indicator after tapping the dial indicator plunger shaft on
the top to ensure the dial shaft is seated at the lowest point on top of the plunger as it is not
flat.
11. Rotate the engine clockwise slowly to TDC. Note the pump lift setting on the dial
indicator.

 

Been there, done that. We barred the engine around completely at which point it was on the base circle. Zeroed it, barred engine until the timing pin popped in. Checked the dial. 6.42mm. Pin in the pump also lined up. From what Dave has been telling me, they want a total of 12.8mm, which seems a bit much, considering my 215 pump only lifts to about 11mm or so.

 

I just got a call form columbus diesel where the rebuilt came from.Very interesting thing larry told me.On a stock rebuild when the engine is TDC and pin is in the pump,the timimg will be factory stock(That would be 12.5 degrees).They don't use a dial gauge.For move advance timing,he said to TDC everything,remove the pump gear and rotate engine counter clockwise about 1/4 of inch.This would be about 15 to 15.5 degree timing.They still recommend to rotate engine 1/2 inch for 18 degree timing...This kind of puts the dial gauage settings out in left field...What does everyone think...??????

 

Got a email from the supplier.He daid to time my pump this way...This makes sence to me:

Rotate the motor to TDC WITHOUT GAUGE INSTALLED. Next install gauge , ZERO gauge out then rotate pump to get 6.4.

 

Still doesn't make sense to me. What if the timing had slipped. They are just putting the pump to position X then adding 6.4mm lift to it. So if the pump is at the correct position, or if its retarded, or advanced, how do they know? All they know is that the engine is at TDC and nothing else.

Where is 1/4" or 1/2" measured? Damper, flywheel?

 

Larry at CD said to mark TDC at the damper and rotate engine counter clockwise either 1/4 or 1/2"....I think we are getting pulled in so many directions on this...Now I don't know.The truck just doesn't have the pull it use to have with the old pump...Go to high and blow the head off the truck.If that happens,I could make the truck into a big flower pot...in the back yard.

 

The pump shop can set you pump to be pinned where you/they want.
I had mine set so when the pin in the pump is in its at 8.5* ( pump is half the engine) for my convenience as 17* static is a close starting point for me.
However I don't quite understand the way they are describing it?
Bottom line you want "X" plunger lift at TDC for static injection timing.
At TDC (intake stroke) you need the designated lift from the CPL chart for pump in question. 6.4mm on a 215 pump is 20* so I assume its a 160hp pump you have?

 

First off you need to establish TDC ( do not trust the pin)
This is easiest done with the drop valve method (I will let you do a search on how as it would take me a week to type it out)
Once you have TDC make a pointer and mark your damper.
Bar the engine backwards 1/4-1/2 turn to get the plunger bottomed out on the base circle of the cam
Set the dial indicator at 0
Bar the engine over in the direction of rotation to your known TDC and your dial indicator will record your lift. If its not the lift you want you will need to remove the gear and advance or retard the pump accordingly.
Clear as mud

 

what ratsun said and i said are the same thing doi it this way and it will be set.. forget everything else you have been told

 

Done......cleared the brain...Did a search, and going to do the drop valve method of TDC.One member mentioned the pin could be up to 3 degrees out.Thank you for everyones input....