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-   -   new from AZ desert (http://www.competitiondiesel.com/forums/showthread.php?t=198909)

Chassisman 01-09-2018 02:46 PM

new from AZ desert
 
New guy here from the AZ desert. Been a few years since I last posted on here I am a disabled Marine Veteran that needed knee surgery. Well 5 surgeries later engine is finally done and running. To update, my idea was to forgo upgrading my smallish Garrett Turbo for twins, or a big single, and instead focus on a better flowing head. The results were to say the least better than expected. Pictures and more info to follow if anyone is interested.

Chassisman 01-09-2018 03:09 PM

Ok here's what we did. Cut head in half, machine surface to be drilled and tapped...Ream holes for dowel pins then begin porting and polishing. Install new Banks Mani, install head assembly. The fear was off the line acceleration would suffer. Reality is it pulls like a large electric car right off idle, and keeps pulling until I get scared... Myth busted!

biggy238 01-09-2018 04:02 PM

I like your style on the return lines and valve cover.

Sent from my XT1575 using Tapatalk

Chassisman 01-09-2018 07:31 PM

Thanks, I think?

95cummins5.9 01-09-2018 07:33 PM

Looks like you spent some time on it, clean. Nice work.

Chassisman 01-11-2018 07:28 AM

Thanks!

jasonc 01-11-2018 07:31 AM

How would you describe the difference? Dyno or seat of the pants? What size turbo are you running and how much did the boost and drive change from before. The head work looks great!

Chassisman 01-11-2018 07:45 AM

It only has a single 3782 Garrett. Way more drivable, no turbo lag really, more like an electric motor, instant torque. No need to power brake, it leaves hard enough to instantly break 38's loose. Was an experimental head really that has worked much better than expected.

smokinVE 01-11-2018 08:00 AM

Nice work! When can I drop one of my heads off???

jasonc 01-11-2018 08:01 AM

Was peak boost lowered any?

Chassisman 01-11-2018 08:46 AM

Not so far, it has gone up 5 psi, but I tightened up the gate, and haven't dyno'd it or ran it really hard yet, with a fresh valve job, and guides, I want to put some miles on it first.

Chassisman 01-11-2018 07:29 PM

Quote:

Originally Posted by jasonc (Post 2651502)
Was peak boost lowered any?

Hmm, ok I got on it a little more in OD... got 40 psi out of it. It was maxing out at 25 before I did the head and adjusted the gate.

Chassisman 01-13-2018 12:53 PM

Hmmmm, strange it makes 25 in lower gears but 40 in OD?

jambbii 01-14-2018 10:38 AM

Awesome job! Where are you at? I am in the east valley....

biggy238 01-14-2018 11:12 AM

Quote:

Originally Posted by Chassisman (Post 2651814)
Hmmmm, strange it makes 25 in lower gears but 40 in OD?

Not entirely strange. Mechanical advantage (resistance) to the piston travel is greater in OD, so heat rejection in the cylinder is higher. The EGT is higher so more work can be done across the turbine.

Sent from my XT1575 using Tapatalk

Chassisman 01-14-2018 04:00 PM

Ya it didn't like to pull hard down low in OD before, now it loves it.

Chassisman 03-13-2018 10:47 PM

Quote:

Originally Posted by 95cummins5.9 (Post 2651248)
Looks like you spent some time on it, clean. Nice work.

I have some specialized mold polishing tools that make things go fast, and provide a good smooth finish.

Fast12v 05-01-2018 04:53 PM

sweet build

Chassisman 08-30-2018 08:07 PM

Thank you all. Project update...It was a fun project. I've since gone from 38's to 42's and it still rapes the tires in a roll on throttle test, I can't believe how much torque it has, and how soon it kicks in.

WUnderwood 08-30-2018 08:23 PM

Beauty!

And thank you for your service!


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