How do B codes with their 6:1 ratio outflow A codes and their 7:1 ratio, with better pressure?
You lost me on that...
I will try to put in words what is in my head. So please bare with me.
AA code have a
6.0mm plunger and barrel, And have a
7:1 ratio
The BD Injectors ( i530 "B" codes) have a
7.1mm plunger and barrel, And have a
6:1 ratio
Now since you brought hybrids up we will talk about them to.
Hybrids typically use a AA code intensifier piston and a "B" code
7.1mm Plunger and barrel, and have a
5:1 ratio.
Now a 175cc AA code will take the same amount of oil to run as a 250cc hybrid. NOW on the other hand a 248cc "B" code will take about 20% more oil to run then the AA or the hybrid. hence the reason behind the "B" codes taking more oil to work right.
AA have a higher ratio 7:1 to the "B" codes 6:1 and the hybrids 5:1.
so at lower ICP pressers and lower rpms the AA will have a better injection presser then the "B" codes and hybrids. BUT the AA cant match the "B" codes or hybrids for flow.
NOW at lower RPMs and ICP the "B" codes will have a higher injection presser then the hybrids. AND I feel like the "B" code will still have a higher injection presser at higher ICP and higher RPMS. IF you have the proper oil to run them. And make them inject the fuel quick.
The only advantage the hybrid has is the fact it can inject the fuel quicker at higher RPMs, hence the argument thet that is the reason it has better injection pressers then the "B" codes. ONLY at Higher RPMs...
BUT I feel that is not quit true. My reason..... The "B" codes and hybrids share the same
7.1mm P&B That is the point i think most people miss when they compare the two. The
7.1mm P&B is the reason the AA will not keep up in flow OR injection presser at higher RPMs.
The fact that hybrids have a
7.1mm P&B and the "B" codes have a
7.1mm P&B AND that the "B" code starts out with a
6:1 ratio vs the hybrids
5:1 ratio, Hence why i Believe if you have the oil to go with the "B" codes the will still have a Higher injection ratio EVERYWHERE across the RPM range. you have to remember the hybrids and "B" codes flow the same amount of fuel for the same amount of piston travel. That is were i think
David Lott was coming from. So i think "B" code would be the better all around choice. IF you have the oil to go with them.
"B" be codes should make more power per CC. and have less smoke and get better Fuel MPGs then the hybrids.
BUT all this is just my opinion.........
P.S. Hybrids aren't A codes. They're hybrids.