Duramax Diesels Forum Truck of the Week
  #16  
Old 01-20-2018, 02:43 AM
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Quote:
Originally Posted by 2004LB7 View Post
I think they should explore making a block that could use the L5P crank, rods and pistons with the older generation heads, electronics, etc.
This is definitely a feasible option that most of us would take for building the engine. If the L5P doesn't have the broken crank issue as the older generation does, then this is the way I would definitely take as well as many others.
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  #17  
Old 01-20-2018, 05:50 AM
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The question is is the crank any better though. We might not really know that for a couple years. Builds might be better off just starting out with the aftermarket narrow journal crank. Then at least we would know what we’re starting out with is better. Maybe it wouldn’t be cost for prohibitive for Russ to have both available?


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  #18  
Old 01-20-2018, 08:05 AM
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Quote:
Originally Posted by 2004LB7 View Post
I think they should explore making a block that could use the L5P crank, rods and pistons with the older generation heads, electronics, etc.
Exactly the way it should be
Quote:
Originally Posted by Dozerboy View Post
The question is is the crank any better though. We might not really know that for a couple years. Builds might be better off just starting out with the aftermarket narrow journal crank. Then at least we would know what we’re starting out with is better. Maybe it wouldn’t be cost for prohibitive for Russ to have both available
Time will tell but having the crank strapped down in a thicker bottom end with thicker casting material is only going to hold it together better
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  #19  
Old 01-20-2018, 08:22 AM
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Sub a dub. This is sweet
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  #20  
Old 01-20-2018, 10:43 AM
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For right now the old style crank is in the plans, that can be changed later once we have enough time beating the L5P stuff up if needed/wanted. We are casting with a raised deck, so if somebody wanted to use L5P style pistons (re bush & get the pin away from the problem area) it’s doable. Or machine down to standard deck height and use 01-16 pistons. It’s not pictured, but we did add the extra L5P head bolts into the final, the above pics are early work.
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  #21  
Old 01-20-2018, 08:20 PM
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Sub’d...


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  #22  
Old 01-20-2018, 10:35 PM
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Quote:
Originally Posted by RPM Motorsports View Post
It’s not pictured, but we did add the extra L5P head bolts into the final, the above pics are early work.
You have my attention.

I would love to try the narrow journal crank (which we know is darn strong) with a stock L5P head, which looks like it should flow like crazy. Hook the injectors up to a LB7 or LLY FICM (depending on how much voltage they like) so I can run my RoadRunner for tuning. Would be a whole lot of fun to see what I could do with that combo
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  #23  
Old 01-20-2018, 11:49 PM
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Subd!
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  #24  
Old 01-21-2018, 06:49 AM
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Very cool.
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  #25  
Old 01-21-2018, 10:24 AM
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This is awesome!
I was always hoping Dart would make a dmax block but this is even better
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  #26  
Old 01-21-2018, 10:56 AM
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My wish list:

Higher deck
Internal clearance for stroker++ cranks and longer rods
Sleeves from the get go.
Hermaphrodite mounting holes so parts from most years will bolt up.

But that's just me.
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  #27  
Old 01-21-2018, 11:36 AM
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Quote:
Originally Posted by Fingers View Post
My wish list:

Higher deck
Internal clearance for stroker++ cranks and longer rods
Sleeves from the get go.
Hermaphrodite mounting holes so parts from most years will bolt up.

But that's just me.
I agree on all points.

Serviceable sleeves would be awesome!!!
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  #28  
Old 01-21-2018, 12:04 PM
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Quote:
Originally Posted by Fingers View Post
My wish list:

Higher deck
Internal clearance for stroker++ cranks and longer rods
Sleeves from the get go.
Hermaphrodite mounting holes so parts from most years will bolt up.

But that's just me.
Please explain this "Hermaphrodite mounting holes" you speak of. I'm intrigued. Never heard of an application like this used in this way. Seen it in many electrical connectors and other type of connections but not on head fasteners
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  #29  
Old 01-21-2018, 12:11 PM
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He means things like front covers, and bosses for accessory brackets.

Not cylinder heads.


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  #30  
Old 01-21-2018, 02:28 PM
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Aren't the L5P heads just like the previous heads except for an additional couple bolts? As I understand it, if the block is setup for the L5P heads, then you can bolt on any year heads just fine.

Would be interesting to see if the block could have the front/rear cover and accessory bracket holes for all years, or if it would cause problems for sealing or something.

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