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Jeep Wrangler YJ
YJ General Discussion
4.2l timing
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<blockquote data-quote="Tree top flyer" data-source="post: 433926" data-attributes="member: 19660"><p>I turned the engine over until the distributor was 180 degrees out. There was no noticeable shot of air from the #1 Cyl. I tapped the starter again, and got a large volume of air back at the 180 mark. Turns out I was on #1TDC, but the distributor was so retarded, that I had to pull it and point it to #1 cyl. It finally started, and with some "advance", I was able to get it smoothed out. The "Howard Cam" break-in instructions require two ten minute run in's ,at 2500 RPM, with a break in between to cool the engine. Once I completed that, the engine smoothed out and is now running like it should. Thanks for the helpful information.</p><p></p><p>Thanks for the information on timing it with a "milled" head. I will fine tune it that way. I do wish "Howard Cam instructions included</p><p>what the optimum "advance would be on this cam. So, your advice makes a lot of sense, short of a dyno tune. Appreciate it.</p></blockquote><p></p>
[QUOTE="Tree top flyer, post: 433926, member: 19660"] I turned the engine over until the distributor was 180 degrees out. There was no noticeable shot of air from the #1 Cyl. I tapped the starter again, and got a large volume of air back at the 180 mark. Turns out I was on #1TDC, but the distributor was so retarded, that I had to pull it and point it to #1 cyl. It finally started, and with some "advance", I was able to get it smoothed out. The "Howard Cam" break-in instructions require two ten minute run in's ,at 2500 RPM, with a break in between to cool the engine. Once I completed that, the engine smoothed out and is now running like it should. Thanks for the helpful information. Thanks for the information on timing it with a "milled" head. I will fine tune it that way. I do wish "Howard Cam instructions included what the optimum "advance would be on this cam. So, your advice makes a lot of sense, short of a dyno tune. Appreciate it. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
4.2l timing
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