Re: Is there a way to make a Holley less cold natured?
x4 on the timing, you need to spend some time on the dist. before messing with the carb., timing is so important to a good running engine. It is the backbone of any quality tuning.
10 degrees is not enough, the initial timing needs to be brought up to around 16 to 18 degrees for a good starting point, once you do that you need to limit mechanical advance either thru some bushing or welding up the slots in the dist. to limit timing to around 36 degrees. once you do that you can adjust the weights and spring to bring in total timing somewhere around 2500 to 3000 rpms depends on what the engine can take so quickly- low compression engine can take timing faster and sooner, slightly higher compression needs to be slightly slower and later, also converter and gear, car weight dependent.
All this is a starting point not final numbers, some small blocks need 36-44 degrees total and some need 16-high 20's or even locked out timing for initial.
once that is all sorted then you need to move to a vacuum advance can hooked to full vacuum, some cans can start to engage the extra timing as low as 5 inches of vacuum like the old B8 cans while some of your common units wont start till late around 14 inches of vacuum.
once that is sorted out don't be surprised that you will see 40 to 52 degrees of timing at idle with vacuum can plugged in,don't take my word for it, go out and turn the dist up til the engine runs really smooth with no vacuum can plugged in and it sounds the best, if you go to far with timing the engine idles down and if you don't go far enough the engine runs roughs at idle, once you see for yourself what the engine likes turning the dist. put a timing light on it and you will see your engine is idling around the 40- 52 degree range and make that your goal for initial timing plus vacuum advance
So once the timing is taken care of which is a lot of work of course then you can turn your attention to the carb, all of the timing tuning really decreases the amount of work you have to do on the carb, folks that just slam a dist. in then do nothing with it many times have carb and heating problems and they do everything under the sun to cure those issues while the whole time the dist. is giving them headaches, but they just don't know any better. For those of us that understand the process the dist is the first thing to make right before moving on to carb.
So before I write a novel about the carb, go take care of the timing and then come back with your issues if any, because any discussion about the carb at this point is mute and worthless til the timing is taken care of.
Hope this helps