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| | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | i have a 235 and i can't get the timing right it continually pings under load. could it be the vacumn advance i have watched it and seems to work. i have put in octane booster didn't help and high octane fuel. what else should i check? ron
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Apr 2005 Posts: 313 Shop Shark | | Shop Shark Joined: Apr 2005 Posts: 313 | I thought that my 250 was pinging at one time, and it was the column shift rattling. If you got a cloumn shift, that may be causing the noise.
Doug 57. | | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | no i have a hurst floor shifter this is real ping and might explain my poor mileage 12.2 on a trip with a 2.73 nova rearend and 15" wheels and tires. but thanks for the suggestion. if it was only that easy. ron
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Set the timing on the steelball in the flywheel. if it still pings the compression could to high from the head being milled or ground to many times or carbon build up. If not that it could be pre-ignition from too hot of spark plugs, valves ground to thin, or carbon build up. 
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | to get colder plugs what do i get?
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | i checked a number of things. spark plugs not oil fouled. they are bosch wr9fp should i change them. the plugs look really good.????????????????? ron
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Apr 2005 Posts: 28 Junior Member | | Junior Member Joined: Apr 2005 Posts: 28 | What are you running for initial and full mechanical advance? | | | | | Joined: Feb 2001 Posts: 4,095 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 4,095 | all i know is that is vacuum. i t moves but doesn't stay in place for very long i am not sure how long it should stay that way when i i advance the throttle. ron
Ron, The Computer Greek I love therefore I am.1954 3100 Chevy truckIn the Gallery 2017 Buick Encore See more pix1960 MGA Roadster Sold 7/18/2017
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | shouldn't stay long, just responds to engine vacuum, which changes quickly - just make sure [truck off] when you manually turn the dist if moves freely and when let go that it 'springs' back easily and all the way
colder plugs - just go to a good parts place and tell'em what you have, ask for a step or 2 colder
Bill | | | | | Joined: Oct 2003 Posts: 445 Shop Shark | | Shop Shark Joined: Oct 2003 Posts: 445 | The vacuum works from 0 to 35 MPH then the centrifical weights take over in the distributor.you may want to try a lead additave to your gassssss tank.Not sure about the weights in that old dist
dan-pa
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