(2)450 DP's vs (2)750 DP's
If they are more efficent, the burn will need less lead time.
OK. lets discount the pop as representing anything other than a bit of air getting in the exhaust.
With 4 primary barrels I think making sure the boosters start carrying fuel as soon as possible won't hurt.
Could increasing the PMAB do this? Maybe.
IF they are too small.
Let's look at Obert's diagram and highlight what the MAB will do if too small and what it may effect on the start up.
If the MAB is already correct, will cause the top end to go lean (less of an issue with 8 bbls). There's probably a little window where a slightly larger MAB may help initiate without noticibley impacting the high rpm or causing a noticible rich - lean - initiation.
I think two .028" e-bleeds is probably as large as we normally want to go. Larger or more and I suspect we would see the rich-lean- and then recovery if we were logging a drag run.
One issue with e-holes too large is that the fuel air in the carb circuit isn't as well mixed and the so the results in out testing aren't as nice and neat as the graph above.
If they are more efficent, the burn will need less lead time.
OK. lets discount the pop as representing anything other than a bit of air getting in the exhaust.
With 4 primary barrels I think making sure the boosters start carrying fuel as soon as possible won't hurt.
Could increasing the PMAB do this? Maybe.
IF they are too small.
Let's look at Obert's diagram and highlight what the MAB will do if too small and what it may effect on the start up.
If the MAB is already correct, will cause the top end to go lean (less of an issue with 8 bbls). There's probably a little window where a slightly larger MAB may help initiate without noticibley impacting the high rpm or causing a noticible rich - lean - initiation.
I think two .028" e-bleeds is probably as large as we normally want to go. Larger or more and I suspect we would see the rich-lean- and then recovery if we were logging a drag run.
One issue with e-holes too large is that the fuel air in the carb circuit isn't as well mixed and the so the results in out testing aren't as nice and neat as the graph above.