I bought (rescued) a Heep that had a Solex and the cheap HEI conversion already done. The Solex disappeared in short order and now there is a Weber 38 in it's place.
I had the 258 rebuilt because there was an ominous knock deep in the bowels of the block. At the same time I replaced the motor mounts (brown dog), removed all extra wiring and replaced everything replaceable (rad, water pump, alt, battery etc.)
This worked great for a while but it was hard to start sometimes and ran rough when hot.
I work in a local driveshaft shop and heard good things about a new local mechanic, so I dropped the Heep with him for a tune up. $130 later (oil change, timing and carb tune) and the Heep was running OK under normal power, but pinging (rattling) like CRAZY under load.
I don't want to cause issues with the mechanic (he brings us some business) but now the Heep is hard to keep running after starting cold (I have to 'foot feed' it for a while) it has a very sporadic miss at idle all the time and it has a HORRIBLE rattling under any kind of throttle load.
I mean HORRIBLE.
The mechanic told me he had to place my HEI at 16* BTDC for it to run well. From what mcmud and others have stated that may be too much.
My question... Which way (and by how much) should I turn the distributor to try to fix this?
[FONT="Comic Sans MS"][COLOR="Blue"][I]Si vis pacem, para bellum.[/I][/COLOR][/FONT]