how much boost does a stock h1c with an 18.5 housing put out? i dont believe its much over 20 correct non wastegated also. I dont know if any of them had gates. Thanks guys

 

H1C, in stock form will have a non-WG exhaust housing. You should have the 18.5cm. The boost will depend on fueling. When I had the 18.5 it would get right up to about 37-39 psi, untill the IP used more than the LP had to offer.

 

was this with a lot of pump mods that you hit those numbers?

 

Yes, it has the fuel screw maxed and 370 injectors.

Also I forgot to mention that anything over 28 psi is usaully considered hot air from a H1C. You have the baby H1C with 3" air inlet?

I am probably lucky the compressor wheel didn't flay apart.

 

ok im just gonna get a boost gauge to determine where i am at. The truck rips pretty good right now with a little lag but the gearing makes up for that and then its screaming. Still more smoke and more power would be great. surprisingly my turbo doesn't have much shaft play if any at 208 thousand miles

 

how many miles should a tubo last? my truck has just around 600 thousand km. stock turbo lol.

 

I can't get more than 20psi out of mine and is spins good in free with very little play.... I need to look at the taper pin to see if the fuel pin is moving on it. I heard they can stick sometimes? I can only get smoke untill boost builds, then the boost drops a little and no smoke (taper pin rotated 120*, fuel screw in, I'm not sure what the PO did to the star wheel.)

 

mine was gummed up when i put the 3200 spring in cleaned it and what a difference.

 

When i had my stock turbo on I hit 37-39 psi regularly. Hot air for sure tho.
Just turned in my power screw a couple turns. Stock non i/c injectors.

 

With good clean oil, meaning regular oil changes etc. it'll last as you have proven. It's when you get crazy over boosting them that you'll snarf the wheels on them. I worry about that now, no I/C and 35lbs boost it asking for it...

 

the best i saw was 32 psi with my 89 50mm h1c.

 

Before the intercooler it was running around 36psi and yes that is hot air almost 600*.temp never gets over 120* and boost is 27psi on a run with the air to water intercooler.

 

best i saw was 19 psi with the 5 speed no fuel mods

 

That's about right for stock no mods.

 

What air to water cooler are you running? A factory one or aftermarket?