datzenmike Posted March 17, 2021 Report Share Posted March 17, 2021 There are 2 TDC on a four stroke engine... Assuming TDC compression stroke on number one, both are closed on #1, exhaust open #2, intake open #3, both valves slightly open #4 If instead TDC compression on #4 then #1 are both slightly open, intake open #2, exhaust open #3 and both closed #4. It would appear you have the TDC on #4 cylinder instead of #1. Quote Link to comment
banzai510(hainz) Posted March 17, 2021 Report Share Posted March 17, 2021 (edited) If you turn it over and the cam lobe is pushing on the rocker then yes it should be open remember vedio???????????? cam position on number 1 is n 10 and 2 o clock position is TDC and V is lined up with the dash thru the cam hole Edited March 17, 2021 by banzai510(hainz) Quote Link to comment
datzenmike Posted March 17, 2021 Report Share Posted March 17, 2021 Hainz I think he's on the other TDC. Quote Link to comment
banzai510(hainz) Posted March 17, 2021 Report Share Posted March 17, 2021 (edited) Like I said if one used the #1 cylinder you cant go wrong I think #1 and #4 are up at TDC at same time if I remember right Edited March 17, 2021 by banzai510(hainz) Quote Link to comment
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