[tndonor]

Just curious what max psi number those of you are seeing on your 4B with brand X turbo. I have an HX30 and may have a line on a HX35, just not sure if its worth it.

For reference I am seeing about 24 psi at max boost.

Thanks all

 

[Driverswanted]

27 psi on my HY35W. Intercooler addition dropped it one psi but HP gains seemed to be substantial.

 

[Carl Donica]

Running a H1C with 12cm turbine housing and compressor wheel/housing upgrade. 25lbs max boost, 6lbs at 65 mph with level highway. Starts boosting at about 1000 rpm.

Carl

 

[bt4mpg]

Is that with or without a wastegate and how big is the compressor wheel? Did you start with a 6BT H1C and swap to the non-wastegated turbine housing?

 

[Carl Donica]

H1C that came on the 4bta. According to Steve at Gillette Diesel Serv.(8oo-638-4679), My stock turbo had a 46mm compressor wheel. We upgraded to 52mm wheel and housing. I have only been running this for four days since clearing an intake restriction between turbo and manifold and am very happy. Listening to the guys here, the hy35 may be the perfect turbo for the 4bt but I did not have the firewall clearance for the downpipe. So I modified stock turbo and am very happy so far. As an added bonus it now produces a very nice turbo whistle. JOY!
Carl

 

[Hot Dawg]

boost

With the stock H1C I was maxing out my 35 psi gauge. With HX35/12cm (non wastegated) i was seeing about 30 psi. Both of those were non intercooled.

Now with my HY35 with the wastegate welded shut and a good sized intercooler I am pushing 33-35 psi.

 

[toolmanoffroad]

stock hy35, no wastgate, 6cyl intercooler, 3in aluminum pipe, 3in intake, 57+ lbs of boost, one hell of a turbo bark when I let off, and know idea how long its gonna last when I run nitrous!

 

[Hot Dawg]

boost

I bet it's loud. Mine is at 35 lbs, I could imagine 57 would be crazy noisy!

 

[racinwayne58]

Hx 35 On Top Hx 50 Bottom Max Boost 86 Psi No Bottle. On The Bottle 98psi. Screaming

 

[mooktank]

Hx 35 On Top Hx 50 Bottom Max Boost 86 Psi No Bottle. On The Bottle 98psi. Screaming

Holy shit batman! Those head studs and fire rings really make a difference huh? No milkshakes yet?

 

[jessejonassen]

stock turbo

stock hc1 fuel turned up with air to water cooler I can get 32 pounds loaded hard, but I have to watch the pyro.

 

[racinwayne58]

went thru two sets of 12mm sutds. finally put in 9/16 studs. head stays put but nothing else does.:nuke:

 

[Forrest Nearing]

an HY is so far out of its efficiency range at 57psi it's unreal... you're just feeding the engine overheated air and causing a unecessary exhaust restriction at the turbine.

 

[57 napco]

92 K2500 4.10 4L80E ex 6.5 105hp 4bt. Did the 3200 GSK, one turn of the full load and afc mod 27psi at 2050rpm. Above 2300 pegs the 30lbs gauge. This 4BT now has more power than the 190hp 6.5.

 

[rbarnett]

92 K2500 4.10 4L80E ex 6.5 105hp 4bt. Did the 3200 GSK, one turn of the full load and afc mod 27psi at 2050rpm. Above 2300 pegs the 30lbs gauge. This 4BT now has more power than the 190hp 6.5.

Hey 57 napco,
How's your egts with the 93, and do you do any towing with it. Just wondering if the HE351 is up to the task. Is that a hybrid, or stock HE351? Also, do you run it up to 4K often?
Thanks,
Bob B.

 

[frigar78]

Anyone sunning a WH1C on there motor..... i rebuilt one for my jeep and im putting it all back together as we speak..... just wondering on peoples experiences with them!!!!

 

[Thegreengoblin]

hx35/40 hybrid, blocked wastegate, 40 psi
hy35 blocked waste gate 40 psi
hx35/40 hybrid over h2e 40 psi, no gating on low psi turbo, high psi set to 30 psi

 

[Thegreengoblin]

now I've got 45psi boost, found some more fuel!!

 

[Thegreengoblin]

stock hy35, no wastgate, 6cyl intercooler, 3in aluminum pipe, 3in intake, 57+ lbs of boost, one hell of a turbo bark when I let off, and know idea how long its gonna last when I run nitrous!

very supprised u can get that much boost out of that turbo. mine was at 40psi and it was starting to drop off in power. u have a ve or p pump?

 

[tranzman]

stock HX35/12 (no gate) , Tenn diesel 75 HP stix,M&H M3 pin & dynamic timing,3 1/2 intake ,4" down pipe ,boost is currently @ 35-38 PSI,i had to dial it back, it was pushing 45+