444cc injectors and GT2871R 52Trim 65A/R ?? CA with this turbo?

[GreeceS13]

Can I run a GT2871R 52Trim 65A/R with 444cc injectors?
If yes how much boost do you think that I can run?
Also tell more about this turbo please..
Max boost for CA?
Some boost levels with horsepowers?

To run this turbo I need headgasket or something else?

What boost levels can handle stock pistons?

7 or 8 nkg's?

Any problem if I stay with stock cams?

[igralec]

444s will really struggle at around 330hp, if you have a way to read AFR you could try different boost settings to see where it starts to run lean, but around 1 bar would probably be enough for that turbo with 444s and i presume a HD stage 3 chip?

Forged pistons, rods ans a metal head gasket would be a very good idea if you want to get the most out of that turbo, also 555cc injectors and a remap somehow. Maybe if you keep the stage 3 chip and try to adjust fueling with SAFC, if not a proper remap and a new engine management...

[GreeceS13]

Struggle at 330??
My car has 350 with afr 11 and a unknown stage 3... not hd! Blitz is the brand!

If I put 555 injectors can I leave stage 3 chip and use a SAFC?

Rods I don't think that I need.. also metal headgasket why?

[R22helipilot]

I think metal head gasket is to cope with higher boost pressure.
I would be interested to see a table of figures showing injector size and possible BHP ranges.
eg

Standard 370cc = 160-220?
440cc = 220-330?
550cc =
610cc =
700cc =
740cc =
900cc =
1000cc =

[Jez]

a rough guide is:
available power = injector size / 5 * number of cyls
this is at 14.7 AFR I think

So 370cc/5*4 = 296bhp roughly, but thats at 14.7:1 AFR

[ByReaL]

~300 HP @ 1 bar mapping and other mods will make teh diference

GT2871R, 720cc inj , Z32 afm......


Dyno: 282 boost sowere betwen 0.8 and 1 bar
http://forum.4tuning.**/attachment.p...5&d=1192716489