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| Setting timing on Ford 302 1995 https://www.smwebhead.com/phpBB3/viewtopic.php?f=3&t=14333 |
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| Author: | dpons [ Thu Jul 30, 2015 12:51 pm ] |
| Post subject: | Setting timing on Ford 302 1995 |
I just installed a new long block after burning a hole in the piston last year, I had just bought the boat and this was only second time using it, Volva Penta Ford 302 1995 2 Brl carb, The book says set timing at 10 deg BTDC, When I set it there it runs ok but if I turn the distributar past the 10 deg to between 10 and 14 BTDC the idle comes up and it sounds smoother and starts easier, did not know if it is safe to leave it there or do I have to leave it at 10 deg, Still not sure why I burned a hole in piston, I read it could be caused from timing and did not want to happen again, was running engine at full throttle to try and beat storm when it happened, read it could have been bad gas also |
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| Author: | deafwish [ Thu Jul 30, 2015 4:25 pm ] |
| Post subject: | Re: Setting timing on Ford 302 1995 |
Advancing the timing will increase manifold vacuum = more airspeed through the carb. Set the curb idle and idle mixtures with a vacuum gauge while sticking to the suggested timing setting. |
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| Author: | LouC [ Thu Jul 30, 2015 6:35 pm ] |
| Post subject: | Re: Setting timing on Ford 302 1995 |
Does this boat have electronic ignition? If so you need to make sure you're doing it the right way so that there is no advsnce happening when you set the base timing. I have an old school engine with points type ignition. On this set up I check the points first then run it at the specified idle rpm and check the dwell. If it's ok then I set the timing at idle rpm. The things that can cause burnt pistons and valves: Over advanced timing Fuel mixture too lean Spark plug heat range too hot Over heating Over propping (prop pitch too high and engine never reached max rpm) 14* BTDC is way too much advance. Fix your idle issue first. |
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