Ok, so... after someone asked me... "Your HX40 is making 40psi of boost?"
I put a little thought into it, got to reading... and from what i'm reading... if my boost gauge reads 80psi, the HX40 should be making 40psi and the HX60 40psi aswell... combined... 80psi...
With the wastegate on my HX40 set to 22psi, this should be impossible ??? unless the wastegate on the HX40 is sticky.... and with regulated shop air 22psi opens up the wastegate...
So, is the HX60 really pushing 60psi, and then... HX40 pushing 20psi ??
I really thought i had this.... but now i'm confused :bang
I've even has a boost spike with 100psi, timing @ 20° resulting in a blown HG...
I'm going to fire ring it, set timing to 18° and try to keep it "civilized" @ 75-85psi...
I pull my 30' toyhauler every now and then, and EGTs have been in check, i can bury the pyro @ 1800° in a 1/4 mile run... but towing @ normal speeds i never see temperatures over 1300° and only on hills... probe is pre-turbo...
Since Cummins says 1250° pre-turbo is normal for prolonged periods, i don't think i'm too crazy...
Exhaust housing sizes are 16cm2 and 32cm2...
Stock injectors would make 35psi on this setup pretty easy, a little late spool... with my current injectors it spools quick and as said... have seen 100psi !
I put a little thought into it, got to reading... and from what i'm reading... if my boost gauge reads 80psi, the HX40 should be making 40psi and the HX60 40psi aswell... combined... 80psi...
With the wastegate on my HX40 set to 22psi, this should be impossible ??? unless the wastegate on the HX40 is sticky.... and with regulated shop air 22psi opens up the wastegate...
So, is the HX60 really pushing 60psi, and then... HX40 pushing 20psi ??
I really thought i had this.... but now i'm confused :bang
I've even has a boost spike with 100psi, timing @ 20° resulting in a blown HG...
I'm going to fire ring it, set timing to 18° and try to keep it "civilized" @ 75-85psi...
I pull my 30' toyhauler every now and then, and EGTs have been in check, i can bury the pyro @ 1800° in a 1/4 mile run... but towing @ normal speeds i never see temperatures over 1300° and only on hills... probe is pre-turbo...
Since Cummins says 1250° pre-turbo is normal for prolonged periods, i don't think i'm too crazy...
Exhaust housing sizes are 16cm2 and 32cm2...
Stock injectors would make 35psi on this setup pretty easy, a little late spool... with my current injectors it spools quick and as said... have seen 100psi !