420A How much can a 420a boost with internals?

[lxeclipsegsx]

okay guys this is the deal how much can a 420a engine build boost? some guy told me you could only boost to 12psi due to the block being Aluminum.

well so far i have my .40 low compress pistons 8.5.1 my eagle rods that can take to 600hp aftermarket crank and stage two cams i think is the 272lifted not sure my undriven pulley, cam gears and a rebuild kit that i got from top line.
pretty soon i'm buy my turbo kit or i'm custome it i'm thinking of going with the t3/t4 and boosting them 20pounds.
I wanted to know if i can with those new internals? if u can help me please e-mail me at [email protected] thank you

 

[Shadow98]

I saw the chart too and I think in that chart the 190 out flowed the 225, but not the 225 hp. I'm curious about wheather it's correct or not.

 

[BigRand]

I saw the chart too and I think in that chart the 190 out flowed the 225, but not the 225 hp. I'm curious about wheather it's correct or not.

No the one 190 did not outflow any of the 255's.

I guess if I could find the chart we wouldn't have to argue, sorry guys.

 

[lxeclipsegsx]

okay guys here is the website of the chart click on it or copy and paste

http://www.2gnt.com/www/corbin/example.html

does anyone have stock 420a injectors 235cc?two of mines aint working right
and do you guys knwo where to get oil feed and return line for a 16G turbo thank you

 

[VelocitàPaola]

I saw the chart too and I think in that chart the 190 out flowed the 225, but not the 225 hp. I'm curious about wheather it's correct or not.

You're reading the chart wrong. Flow and pressure are two completely different things. In most cases, they correlate to one another, but there are also many other factors that must be considered (fuel line diameter, internal texture, elasticity, fluid compressibility, etc.).

Corbin's chart doesn't say that the 190 "outflows" the 255, it just produces a higher peak pressure (as exhibited by the X-axis). Both the 255 and 255HP outflow the 190 (as shown in the Y-axis) by at least 18 gallons per hour (GPH), which is equivalent to roughly 65lph. Hence the 255/255HP outflows the 190 by what their names suggest, about 65lph.

When dealing with large injectors and alternative fuel management systems, the flow rate is really what we want to pay attention to. As you can see, the 190 barely flows more fuel than the stock OE pump. The 255 and 255HP, on the other hand, move a great deal of more fuel.

The maximum pressure outputs are of little computational use when designing a fuel system, unless high fuel pressures will need be dealt with (i.e. with an FMU). Even then, because we generally only use an FMU up to 8psi of boost or so, a 255 should be more than sufficient for any project you're working on.

 

[lxeclipsegsx]

anyone running 20psi on their 420a's?
my engine should be going in on sat turbo in 3weeks
dont know what times should i be expecting what do you guys think?
MODS
aftermarket crankshaft from sbr
eagle RODS
wiseco pistons.40 8:81
got a whole rebuilt kit so every gasket and all that will be new
underdrive pulley
10.3spark plug wires
stage two cams crower bigger valves
springs and retainers from crower titanium
after market cam gears AEM
bore out block
and port and polish head
3'inches catback exhaust
big intercooler
12.1 fmu
255 lph fuel pump
stock injectors thinking of boosting 8 for a while

 

[DSMcrazy3]

12.1 fmu
255 lph fuel pump
stock injectors thinking of boosting 8 for a while

With that fuel setup that's your only option.

To get the best times though you'll need a beefier drivetrain. Upgrade those axles and that clutch.