S366 over HC1 twins

[Cumminsguy94]

here's a little project I just got done wrapping up. Had the extra turbo laying around so figured why not.

 

[SWALLDOG]

Looks real clean. Nice work. How does it run?

Probably @ work under a truck, Tapatalk 2

 

[Cumminsguy94]

Runs great. Dont have a whole lot planned for the truck so i figured a small set of twins would be fun. Havent had the truck at full throttle yet but at 3/4 throttle hits 50 psi easy and barely hits 1000 degrees. Truck is virtually smoke free.

 

[DirtyMaxx03]

That's gonna be a fun setup for runnin around the street

 

[JQmile]

That's cool....I bet that setup's the definition of "right now."

 

[DDually]

I'm curious about the drive pressure. Do you have a drive pressure gauge?

 

[Cumminsguy94]

That's cool....I bet that setup's the definition of "right now."

It is. Ready to go at any rpm range. Ill have dyno numbers soon from just the HC1 to this setup this week when i get time to at work. Previous was 341hp/1020 ft/lbs 5x12s and 16 degrees of timing.

 

[Cumminsguy94]

No drive pressure gauge. I can hook it up to our dyno and get some numbers tho.

 

[JQmile]

Is it wastegated? I ran the gate shut with a 57mm/71mm setup and it was scary. 65psi, 99psi drive, even only at 430rwhp. Gate open it was 57psi but only 62psi drive, and made the same power. Setup is at 68psi now (more injector) and made 601rwhp last time out.

 

[JQmile]

It is. Ready to go at any rpm range. Ill have dyno numbers soon from just the HC1 to this setup this week when i get time to at work. Previous was 341hp/1020 ft/lbs 5x12s and 16 degrees of timing.

That's a crazy torque number...nearly 3x HP.

 

[TheSilverBullet]

What is the primary mounted to? Nice fab work!

 

[admcummin]

What size pipe and how hard was the bend on the hot pipe coming out of the back of the secondary? I'm going to be doing mine just like that and I'm running a 63/68/14 and I was going to use a 3.5 inch hot pipe, but with a 4" outlet I don't think it will make the bend. Also wondering how you did the primary mount.

 

[Cumminsguy94]

Is it wastegated?

Yes was runniung no wastegate on the HC1 as a single but have re hooked up the line for the twin set up.

That's a crazy torque number...nearly 3x HP.

Truck is a 5 speed, 4.10s, and little tires lol

What is the primary mounted to? Nice fab work!

Made a bracket to mount the primary on off of the two top bolts on the a/c compressor. It turned out really nice ill post some pics

What size pipe and how hard was the bend on the hot pipe coming out of the back of the secondary?

I used 3" hot and cold piping with a 4" downpipe. Shouldnt need any bigger than 3" piping at all.

 

[Cumminsguy94]

pictures of the mount in a couple other of the build.

 

[Cumminsguy94]

Had some time to do a few dyno runs last night and change the air filter setup. First graph is from old to new setup no changes. Second is having the gate open on the HC1 vs Closed. Red line is torque, Blue is HP, and Green is Boost.

 

[newsmoke]

Very clean setup, any pictures of the rest of the truck?

 

[Cumminsguy94]

Haha sure

 

[Cumminsguy94]

Just an old farm truck (beater with a heater) i use as my winter vehicle. 260K on it. Not pretty at all but runs like a top.

 

[oldblue116]

Just an old farm truck (beater with a heater) i use as my winter vehicle. 260K on it. Not pretty at all but runs like a top.

Would noy have expected that. I love it.

 

[Cumminsguy94]

Just cause the truck doesnt look the greatest doesnt mean i dont try to make things look nice :hehe: