Duramax Diesels Forum Truck of the Week
  #721  
Old 11-06-2018, 09:37 AM
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Here is where all that power hits the water.

First drive is bolted up.


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  #722  
Old 11-06-2018, 04:50 PM
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Oh boy!!!
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1969 MGB GT MKII Factory Condition

2016 LML CCSB Denali < Lifted 22's/35's, Fox 2.0 < I officially need help.
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  #723  
Old 11-06-2018, 05:39 PM
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And then there was two.


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  #724  
Old 11-06-2018, 05:56 PM
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Did you ever settle on a turbo yet?
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  #725  
Old 11-06-2018, 06:45 PM
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Quote:
Originally Posted by MarkBroviak View Post
Turbos that are actually going on the boat will be the NLX S476/87 SS V-band 1.0Ar housings for space and packaging purposes
That's what's going on em. I'd love to experiment more with the twins, they sounded wicked. But gotta get this thing in the water before river freezes over.


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  #726  
Old 11-07-2018, 04:29 AM
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Time to go use the K-Planes!!!
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2010 GMC 1500 SCSB Denali Clone < lifted 22's/33's, Kooks, Magnaflow, 5.3, 6l80, TVS1900, lots of boost, Mayhem tuned, etc... <<<<Broken Under Construction : BTR boost cam, sodium valves, titanium springs, 15% overdriven balancer, 80lb squirters>>>>

1969 MGB GT MKII Factory Condition

2016 LML CCSB Denali < Lifted 22's/35's, Fox 2.0 < I officially need help.
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  #727  
Old 11-07-2018, 10:18 AM
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K-planes and rooster tails in the near future
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  #728  
Old 11-10-2018, 05:04 PM
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Quote:
Originally Posted by MarkBroviak View Post
This was literally a month of pure hell that Ken and I went through to get to this point but we both learned a lot with it! I definitely want to ride in it now for some fine tuning in the correct environment...
Before I move to far into the next stages of the build, I wanted to give a big shoutout to MarkBroviak, Larry, and all the crew at Danville Performance for allowing me to basically live in their shop for a month. It's a super clean facility, and I'm a major slob, just ask my wife, or Mark for that matter.. lol

Anyways I borrowed countless tools, made plenty of messes, and ate every bag of Cheetos up front in the customer waiting area. Even left my junkass broke down cumbucket parked in the side lot for a week, while taking up a second spot with one of my rental car"S"..

When I finally did a bypass belt on my locked up AC pump, and then the dam Dodge tries to kill me on I70 four times hauling one of the Duramax engines home. DEATH WOBBLE!! Called that for a good reason.. Guess it was pissed I'd left it parked beside a blown up Powerstroke for over a week, then tossed a Duramax in the bed and expected it to get me home. Which it did, at 45mph on side roads in the pouring rain for 5hrs.

That's just one of the 4 trips over and back. Every one had some stupid adventure added. Like week of FFA convention, every hotel booked, so I went AirBnB and slept in a barn one night.. And I haven't even got started on the fab work, electrical gremlins, dyno issues, oil leaks, coolant leaks, belts eating the cam sensors, or Mark making a dang good effort at removing a knuckle while machining out some exhaust V-band flanges. If he's slow to reply on email, it's cause he was down to only 6 working fingers and was typing with thumbs when I last saw him...

Hope that gives ya an Idea of what went into testing and tuning these engines. According to all our logs, we started out around 640hp, and some 20 "logged" pulls later was finally happily into the 900's, on the second engine. Sure we could have just tossed some huge injectors in there and a big single off the shelf and been done within a week. But goal was to do this cleanly, slowly, and test all hardware as if it was running in a boat. So once I drop them in the boat, no big surprises like the cooling system can't keep up. Or better yet, those twins are too big and can't make enough boost to get the boat on plane. Remember, we a buying "2" of everything on this job.

If you go back several pages someone ask how I was doing things differently than the guys in Utah building my buddies C powered Skater engines. To which I replied, "not going to just toss em in and drop the hammer." We spent a good bit of time doing part throttle stuff fully loaded in the 500-700hp range logging data. Then moved up to WOT loaded runs, and confirmed the twins wern't gonna achieve the power we needed, cleanly. And guess who has more dyno data on different turbo setups than probably Gale Banks?

So I ended up learning a lot about turbos, and Mark learned why he never wants to own a boat that uses more than oars for power. I'd love to spent another week testing with larger injectors and the new turbos, but some guy from Exergy wanted to play with his fancy Cummins engine.. Lucky for him one of mine started leaking past the head gaskets, and I'd all ready hauled the second engine home.

I'll post up some new pics taken over the month for everyone to enjoy. Mark has at least 100hrs of video footage to share, if he could figure out how to use his dang DVR.
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  #729  
Old 11-10-2018, 05:32 PM
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Week 1
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  #730  
Old 11-10-2018, 07:57 PM
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Week 2 & 3.

But maxed out my storage.. How about a little extra room admins?
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  #731  
Old 11-10-2018, 08:07 PM
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I can't believe she lost a head gasket that quick at that power level. Just bad luck.
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  #732  
Old 11-10-2018, 09:10 PM
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Quote:
Originally Posted by Ne-max View Post
I can't believe she lost a head gasket that quick at that power level. Just bad luck.
It never blew, just burped a 16psi cap once. We ran another hour at less load and no problem.

But once I watched all the videos, you could see that it was slowly building pressure in the cooling system on all the plus 750hp runs according to our gauge. Since the Evans coolant doesn't boil till 375F, it's either serious hot spots, or a gasket is leaking.

First engine never showed these pressure spikes, or breached 750hp. So gotta say it's those OEM LML gaskets we used. I'd love to blame Dustin who did the assembly, but he works at GM dealer and was person who first alerted me to possible issue with these new gaskets. He's seen em blown at 20k miles, driven by people who never even towed a trailer.

Still gonna make him help me change em.. lol. And I get to do full inspection on the top end for free.

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  #733  
Old 11-10-2018, 09:53 PM
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What studs and torque you running for the head studs?
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Mike L is my role model. I want to be like him when I grow up.
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02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
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  #734  
Old 11-10-2018, 11:18 PM
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ARP230-4201 studs. C gaskets, don't recall what they are torqued at, was two years ago...

Dustin said GM sent out a SB on the LML gasket issue shortly after we purchased those. Know he's changed a couple dozen at work. I seriously thought they would leak at lower power levels.

While neither Mark or I recorded that run on our phones, when we replayed the DVR, you could see gauge creeping up from 5-12psi, then it just popped 20psi and the cap released. With no catch can, couldn't miss it. Didn't have the cyl pressure probe connected either. But we both agreed it leaked somewhere. Bet the Victor's resolve the issue.

EDIT: From quick google search, owner of a 3000 mile LML truck towing 12k lbs. Offsite Link

Last edited by kidturbo; 11-10-2018 at 11:39 PM. Reason: added
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  #735  
Old 11-11-2018, 10:58 AM
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Default Twins with Twins, Anyone?

Yeah you just got me thinking about mine. Ive got As but running a1 h11 torqued at 150ft lbs. got about 20k on them and abusing the hell out of them during the summer at 240+* coolant temps, 3k rpm and probably around 3-400rwhp durning the time and maybe a quick stint for 600 to get around someone. Hoping they hold out till I redo the engine in a couple years
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Mike L is my role model. I want to be like him when I grow up.
James

02 LL7 2500HD CC/LB dmax/alli "The Limo"

BIG THANKS TO: Mike L, Steve, Trent, Guy, Dan, Ruben, Josh H, Scott, Brian and everyone else who has put a hand in to help me.

best time to date: 12.39

motor died/bent rods = 3/11/11
back from the dead 7:04pm 4/9/2012

Limo is back in the garage, now driving a built chevy tracker
Tailgate Crew Member #4
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