Interesting Finds At PRI 2024

kidturbo

Piston Tester
Jul 21, 2010
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Had a great time at PRI this year. Always a good spot to meet up with old friends from around the country.

Plenty of cool diesel tech, and even a few Duramax advancements caught my eye. Would like to hear more about these rockers and bridges if anyone has data.

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Please feel free to share all the other cool engine hardware I walked past.
 

2004LB7

Super Moderator
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Dec 15, 2010
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Wow. A set of those will set you back nearly $5k. How much more can you get for that much money? I'm thinking there are better places to invest that much in
 

kidturbo

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Jul 21, 2010
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Wow. A set of those will set you back nearly $5k. How much more can you get for that much money? I'm thinking there are better places to invest that much in
That's enough data for me.. lol.

Here is their big valve offset heads with dual ratio config that fits a stock SB block / lifter which caught my attention. Actually it was the "Patent Pending" sticker, but still, some nice engineering work.

20241213_133224.jpg

Speaking of data, I did talk with the guys from Callies for a bit. Next batch of Duramax Ultra Billet's be rolling out of the furnace next month. Said sales have been steady, with a fair amount of those going neutral balanced. Confirmed the neutral options with sales report from the FD team. Saying that first batch of balancers done gone, and they were built for one crank.. No reported issues from that side beyond some over treated washer which got caught early on. Callies had couple other tungsten laden cranks on display, but no shinny Duramax.
 
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kidturbo

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I was most interested in the 6000rpm geometry aspect of those rocker / bridges. Since can still count on one hand the people actually spinning a Duramax at or above 6k, would like to see some hidden camera action on a side by side comparison. OEM layout not shown any extra wear in my abuse. Maybe some quicker revs, and reliability in high spring rate applications.

No idea on Tooley. Every other booth there was LS .....
 
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1FastBrick

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Dec 1, 2016
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The Manton Dmax stuff is not new. It's been out for a while. https://mantonpushrods.com/product-category/manton-diesel-products/duramax/

They Private label the spring kits, pushrods, and billet bridges for XDP.
They also offer an upgraded shaft that is supposed to keep the lube flowing when the rocker arm opens. Apparently the OE design shuts it off.


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kidturbo

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More importantly @kidturbo

Did you catch the PRI flu that’s been going around while there?
No, but like all the other patrons, I donated my $40 to feed a congressman.. Actually paid for a buddies pass, so I bought two lunches... Hopefully one of those mofo's choke on it since the RPM act has proven to be no more than some lobbyist lunch money fund....
 

MarkBroviak

DMax Junkie
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May 25, 2008
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Danville Indiana
I was most interested in the 6000rpm geometry aspect of those rocker / bridges. Since can still count on one hand the people actually spinning a Duramax at or above 6k, would like to see some hidden camera action on a side by side comparison. OEM layout not shown any extra wear in my abuse. Maybe some quicker revs, and reliability in high spring rate applications.

No idea on Tooley. Every other booth there was LS .....
It was good to hang out with you in person again old friend! For what it is worth we are running Wagler billet bridges in Paul's motor with stock rockers and zero issues and spin up to 7200rpms on it. The Mantons are nice but I don't see the value in them honestly.
 

Bdsankey

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Feb 1, 2018
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Larsen, Wisconsin
It was good to hang out with you in person again old friend! For what it is worth we are running Wagler billet bridges in Paul's motor with stock rockers and zero issues and spin up to 7200rpms on it. The Mantons are nice but I don't see the value in them honestly.
I can't say I've been to that high of RPM but I've done around 5500-5700 during driveline failures and flared shifts with my old engine pulling. Similar config (stock bridges in that one too at that point).
 

kidturbo

Piston Tester
Jul 21, 2010
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Great catching up with you also Mark. Now I know where to find ya, I might be that strange car with old guy asleep in your driveway...

Due to LBZ/LMM ecm hardware limits, 6000r is never gonna be a sustained Rpm for most. Yet to test on an l5P.. LB7/LLY it's possible as I've found no such hardware restraints in the FICM. But unless you're aftermarket fueled, most can't get up that high. My max sustained is currently 5666rpm, with just springs, rail studs, and 120hrs on the clock. Nothing to shinny here..


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Sent from my SM-S901U using Tapatalk
 
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