JeffersonRaley Posted February 25, 2018 Posted February 25, 2018 Just a heads up - my Duratec was showing signs of a timing issue at high RPM. I replaced the plugs & coils with no improvement. Eventually I used my calipers to verify the timing tools I bought from Massive Performance, and they were not to spec. The Ford tool 303-507 used to lock the crank in position should be 38.55mm, and the one I got from Massive was 37.15mm, over 1 mm off. Unfortunately you can't get the tool from Ford anymore, so I just ordered one from CFM. Hopefully that one will be the right size.
papak Posted February 26, 2018 Posted February 26, 2018 Thanks for the info. I used the same one that I loaned you so Ill have to recheck mine as well. I would just get the appropriate metric bolt and cut it down to the correct dimension. I wasn't aware of the exact measurement.
papak Posted February 26, 2018 Posted February 26, 2018 My tool is from Massive and measures exactly 38.55mm. It’s the purple one. I believe that the tool kit came with two of them. I kept the one for the Duratec and got rid of the other.
1turbofocus Posted March 1, 2018 Posted March 1, 2018 Get a old 6 cyl Chevy pushrod and a set of dial indicators and do it old school , I never trust those pins I have seen a few thousands off in the cranks alone Tom
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