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Mod | | | Forums66 Topics128,024 Posts1,055,395 Members48,422 | | Most Online14,466
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| | | | Joined: Apr 2014 Posts: 62 'Bolter | | 'Bolter Joined: Apr 2014 Posts: 62 | Can someone tell me how you set the timing on a 235? Mine pings under hard acceleration.
1961 Long Stepside Apache 10, original 235, 4 speed and 3:90 posi totally stock (owned 12 years)
1966 Chevelle (owned 53 years)
| | | | | Joined: Feb 2000 Posts: 5,194 'Bolter | | 'Bolter Joined: Feb 2000 Posts: 5,194 | Think of the vacuum advance unit as an arrow and the end pointing out away from the distributor as the feathers, and inside the distributor as the pointy end. Turning with the arrow advances the timing, going backwards retards it. So, back the timing off, toward feather end till the ping is barely heard under heavy acceleration. That will be ideal timing.
Joe | | | | | Joined: Apr 2014 Posts: 62 'Bolter | | 'Bolter Joined: Apr 2014 Posts: 62 |
1961 Long Stepside Apache 10, original 235, 4 speed and 3:90 posi totally stock (owned 12 years)
1966 Chevelle (owned 53 years)
| | | | | Joined: Mar 2010 Posts: 10,271 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,271 | I would first change/clean the points, check for worn contact area on points where they contact the distributor cam, and set the gap at .018 inch, then follow Joe's excellent advice. I ran around in circles with a similar problem as yours and couldn't get rid of the ping without losing most of my horsepower. Turned out to be badly worn points where the plastic rides on the distributor cam.
Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | | | |
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