Establishing 28* BTDC on 1976 45hp Chrysler

[lagoon bandit]

I am doing a tune-up on my old Chrysler 1976 45hp model # 451HH. I know how to set the spark advanced with the spark control rod and test light what I need to know is how the find the 28* BTDC WITH OUT a gauge or a special tool <br />First some back ground I have one mark on the flywheel and a gauge on top of the intake From what can tell the mark is for the 28*BTDC and NOT TDC but I really do not know for sure<br /> This is what I am thinking and PLEASE correct me if I am wrong<br />To set the timing I turn the crank shaft until the points are all the way open then I set the point gap to .020 then I install the flywheel and turn it until the grove (line) on the flywheel lines up with the larger middle line on the timing gauge <br />At this point it should be set to 28* BTDC and I make the adjustment on the spark control rod with the test light to set the spark advanced.<br /><br />So is the grove (line) on the flywheel for TDC or BTDC?<br /><br />If the grove (line) is not for BTDC the how do I establish BTDC? <br /><br />Tanks for the help in advanced<br />-Richard<br /> aka Lagoon Bandit

 

[eurolarva]

Re: Establishing 28* BTDC on 1976 45hp Chrysler

If you dont get a response here you may want to try the Marine Doctor HERE . He has 25 years experience as an outboard mechanic and if very familiar with Chryslers.

 

[lagoon bandit]

Re: Establishing 28* BTDC on 1976 45hp Chrysler

to set the timming I just gaped the points at .020 (when the hump of the cam open the points that when I gaped) the I turn the fly wheel till the line on the flywheel lined up with the middle timming mark on the gauge then the adjust the spark control rod till the 1 point barley opened and that was it now she run 27.5 mph on the water acording to my gps<br />-Richard