dan123dbl

Many people put smaller exhaust housings on the h1c turbo. Maybe you can put the 12 housing on your original turbo and try that out.

gaberichison

Should I do that or just a 60mm upgrade on my h1c?? I'm looking for really good throttlength response and acceleration

dan123dbl

Honestly upgrading the h1c isn't worth the money to me. I had a 14cm housing on mine and ended up going with a different turbo. It's too bad you bought the "hx35" turbo already because I would have recommended an he351cw if you were willing to spend that kind of money.

But you can't change what has been done so I would hold off on buying any more parts until you have your gauges in and the issues resolved.

If I were you I would put the 12cm housing on the h1c if it all fits together properly.

gaberichison

Okay man, thank you very much for the help, I'll give that a shot, and look into the 60mm upgrade for the h1c

j_martin

I put a 60mm on my stock turbo. gained 6-8 lbs of boost. It still had the lagmaster exhaust side on it, which is OK. I use the truck for pulling trailers, and it has a hardened A518 transmission in it, so other than taking enough time to spool up at the stop sign for me to check the maps, all is good. If you want a mild turn up for an automatic, this works well. If you want quick spool up, this is not your piece of cake.

The one time I figured I needed a hard launch to get into traffic, when I let go of the brake, I scared everybody, including me, within a quarter mile of the smoking demon.

If the transmission was manual, I'd either put in a better turbo, or put a tighter exhaust side on this one.

I bought the 60 mm parts, and a bearing and seal rebuild kit all genuine Holset. Parts went in perfectly.

I just thought of another item on what you're hearing. The one truck I own with straight exhaust and a big stack right behind the cab, I can hear the turbo at idle, or mild throttle. As soon as I get on it, it goes ultrasonic, and only the dog can hear it. If it's loud and audible, it's likely going way slow. This truck is a hard worker for sure, so it's set up pretty frisky. Don't know exactly what the setup is, I bought it this way.

mknittle

here lies the problem!

bobva

That will never happen. They dont fit.

bobva

Why and Why

Whats the difference between a upgraded h1c and a he351cw?

Inquiring minds want to know.

BILTIT

The 351cw has a wastegate and a tighter exhaust housing with different turbine.

bobva

I think your trying to answer ? the above.. Re read the ?

BILTIT

I did answer part of it. I told you the difference between an upgraded H1C and the 351cw.

gaberichison

What would be my best bet on the exhaust side if I go back to my h1c and run 60mm? 12cm?

gaberichison

I understand that, but there are plenty of people that have good luck with these turbos

BILTIT

For a 5 speed the 12cm is optimal for spool up. Some prefer the 14 for a little less restriction at wot but i personally stick with th 12cm.

gaberichison

What is the stock size, 16 cm??