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Did you use the timing pin to set pump timing?

  • Yes I felt it was close enuff

    Votes: 6 40.0%
  • No I used the drop valve method

    Votes: 5 33.3%
  • Other method

    Votes: 4 26.7%
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Discussion Starter #1
I am about to set the pump timing on my stock motor. I would like to just use the timing pin for top dead center. Is this close enuff?
 

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Discussion Starter #3
I would think within a degree or two would be close enuff. I am just wondering how accurate the pin really is
 

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I used the pin the first couple of times, but then I broke it off so now I remove the injector on #1 and use a dial indicator to find absolute TDC, not real fond of the drop valve method personally, but to ech his own.

I'm a machinest by trade, and measureing things really really precise is what I do. With that said, the best way in my mind is measuring off the piston itself.

As to "close enough", the difference in 1* of timing isn't really much in reltation to the crank, but makes a noticable difference in the performance of the engine, so I guess that's a relative term and everybody has a different definition.

Geoerge
 

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I like that idea the best :thumbsup Do you just use a magnetic sled base to hold a dial indicator?
 

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Yes, it's a very bendy one with fine tune adjustments and a very long adapter on the end of the indicator. Imade the adapter out of a piece of MIG welder liner cut to length and heat shrunk to the end of a smaller adapter that fit inside the liner. Then I can screw it into the end of my indicator when I need the extension and take it off when I need other adapters.

George
 

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I use a dial indicator on the #1 intake valve. On the intake stroke I find TDC and go .050 before and marking the dampener in with a fixed point on the block each time. I then split the differnce and line that up with the same point I used earlier. I have seen the pin close to 1/2" off using this method.
 

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Discussion Starter #8
Thank's for the replies everyone. I hope to set it as soon as I get some free time.
 
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