Cummins Dyno Disaster! - Page 3 - Competition Diesel.Com

*Big Blue24* · 08-09-2020, 10:18 PM

To answer a few questions:

First, Josh is an employee at PDD and works in our sales/tech support department. In his spare time: evenings/weekends he has access to PDD's dyno etc. This failure was not on a PDD company vehicle or test engine, this was Josh's personal race/hot street truck build that is built and paid for by him personally.

To help him (Josh) out, I suggested/offered to pull a PDD-owned Hamilton Comp Wet Block off the shelf and pay for the machining and parts to build it into an in-house test engine that he could use and play with while he decided what to build next for his truck. Zach has offered some parts help with the test engine, but up to this point it is still 100% PDD owned stuff or miscellaneous used parts from Josh. There is a strong possibility that a new set of Hamilton Steel pistons will eventually end up in this second test engine but the first fire-up will happen before the new steel pistons are ready.

Yes, the crank from this failure was donated by Josh and is currently installed in this second Hamilton Comp Wet block that came off PDD's shelf. I personally checked the crank for straightness and it spins true with-in 0.0005" or as close as I can measure so we're going to try it. Josh didn't want to sell it used in-case it has stress fractures or other problems not yet seen.... but I wasn't scared to try it again after it spun true and looked great.

No, Josh did not personally bore or hone either of these blocks, that was done at the local machine shop with proper tools. The failure engine was set to 005" PTW clearance as that was the clearance recommendation from the piston/block manufacturer (Hamilton) and neither Josh nor PDD had ever played with steel pistons so we had no experience to go by. Josh personally assembles all of his engines and yes he did use feeler gauges in a video or social media post to show how "scary tight" the PTW seemed on the steel pistons at 005" vs the 010" or more you'd see or we've used on a cast piston high HP engine build.

At this point, it's not fair to say what exactly caused the failure because no-one knows with 100% certainty, but there are a bunch of theories running wild on social media ranging from: core shift on the block, piston skirt collapse, circlip failure, circlip missing(installation error), bad tuning too rich, bad tuning too lean, bad injector balance, machining error (loose PTW) (tight PTW), not enough engine cooling, break-in failure (no NOS for break-in), and the best one: We should have called Banks....

Zach did come by in-person last week to look at the broken parts and snap a few pictures and take a couple measurements.

The second engine is a PDD-sponsored test engine that Josh gets to "test" for a bit while he waits for his Enforcer deckplate engine from D&J.

There are a couple more videos coming out soon and they will reveal more details on the second comp wet block, how it holds up on the dyno, etc.
Stay tuned!!!!

Empty_Pockets · 08-09-2020, 10:26 PM

Definitely should have called banks��

biggy238 · 08-09-2020, 10:32 PM

That sheds some light on Zacks post that was taken down.
What was put up wasn't directed toward Josh or PDD, but his cheerleaders in the comments certainly were.

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WUnderwood · 08-10-2020, 11:05 AM

I have no dog in this fight, but I have a lot of respect for Josh's attitude/perseverance. Hope you get it all figured out, and are able to get well north of 2k hp.

*Snedge* · 08-10-2020, 11:16 AM

Does Josh have a magic tree that grows money, if not, is PDD hiring?

mhuggler · 08-10-2020, 11:37 AM

Why is the name "Banks" even being mentioned? Or was he being sarcastic? Sometimes if somebody has especially dry sarcasm I'll miss it occasionally.

*Snedge* · 08-10-2020, 12:04 PM

Quote:

Originally Posted by mhuggler

Why is the name "Banks" even being mentioned? Or was he being sarcastic? Sometimes if somebody has especially dry sarcasm I'll miss it occasionally.

Banks is the leader in all things Diesel. They are the best. Not to mention Gale is one snappy dresser.

How's that for sarcasm?

displacedtexan · 08-10-2020, 12:56 PM

Quote:

Originally Posted by Snedge

Banks is the leader in all things Diesel. They are the best. Not to mention Gale is one snappy dresser.

How's that for sarcasm?

Plus, he knows the guys at Edelbrock.

*Snedge* · 08-10-2020, 01:10 PM

By their first names and stuff?

thatguy69 · 08-10-2020, 02:51 PM

Quote:

Originally Posted by Snedge

Does Josh have a magic tree that grows money, if not, is PDD hiring?

Same thing I was wondering?

mhuggler · 08-11-2020, 03:15 AM

Quote:

Originally Posted by Snedge

Banks is the leader in all things Diesel. They are the best. Not to mention Gale is one snappy dresser.

How's that for sarcasm?

Ahh yes, I remember the jeans. My nuts hurt just seeing them.

4x4dually · 08-11-2020, 09:00 AM

It's sad that when a guy tries new things, makes big goals, then shoots a piston outdoors on his own dime….the internet start blabbering their oral diarrhea on all the things that were or weren't done and who was to blame. Those people should just grab a big ol' cup of STFU and enjoy the show.

biggy238 · 08-11-2020, 10:16 AM

Quote:

Originally Posted by 4x4dually

It's sad that when a guy tries new things, makes big goals, then shoots a piston outdoors on his own dime….the internet start blabbering their oral diarrhea on all the things that were or weren't done and who was to blame. Those people should just grab a big ol' cup of STFU and enjoy the show.

I especially like the comments about their brothers uncle-cousins that build NHRA engines and they WOULD NEVER!!! do what Josh did... Just never.

Sent from my motorola one action using Tapatalk

08-09-2020, 10:18 PM	#41
Big Blue24 Name: Big Blue24 Title: Comp Diesel Sponsor Status: Not Here Join Date: Jan 2008 Location: Cedar City, UT Member`s Gallery Posts: 6,310	To answer a few questions: First, Josh is an employee at PDD and works in our sales/tech support department. In his spare time: evenings/weekends he has access to PDD's dyno etc. This failure was not on a PDD company vehicle or test engine, this was Josh's personal race/hot street truck build that is built and paid for by him personally. To help him (Josh) out, I suggested/offered to pull a PDD-owned Hamilton Comp Wet Block off the shelf and pay for the machining and parts to build it into an in-house test engine that he could use and play with while he decided what to build next for his truck. Zach has offered some parts help with the test engine, but up to this point it is still 100% PDD owned stuff or miscellaneous used parts from Josh. There is a strong possibility that a new set of Hamilton Steel pistons will eventually end up in this second test engine but the first fire-up will happen before the new steel pistons are ready. Yes, the crank from this failure was donated by Josh and is currently installed in this second Hamilton Comp Wet block that came off PDD's shelf. I personally checked the crank for straightness and it spins true with-in 0.0005" or as close as I can measure so we're going to try it. Josh didn't want to sell it used in-case it has stress fractures or other problems not yet seen.... but I wasn't scared to try it again after it spun true and looked great. No, Josh did not personally bore or hone either of these blocks, that was done at the local machine shop with proper tools. The failure engine was set to 005" PTW clearance as that was the clearance recommendation from the piston/block manufacturer (Hamilton) and neither Josh nor PDD had ever played with steel pistons so we had no experience to go by. Josh personally assembles all of his engines and yes he did use feeler gauges in a video or social media post to show how "scary tight" the PTW seemed on the steel pistons at 005" vs the 010" or more you'd see or we've used on a cast piston high HP engine build. At this point, it's not fair to say what exactly caused the failure because no-one knows with 100% certainty, but there are a bunch of theories running wild on social media ranging from: core shift on the block, piston skirt collapse, circlip failure, circlip missing(installation error), bad tuning too rich, bad tuning too lean, bad injector balance, machining error (loose PTW) (tight PTW), not enough engine cooling, break-in failure (no NOS for break-in), and the best one: We should have called Banks.... Zach did come by in-person last week to look at the broken parts and snap a few pictures and take a couple measurements. The second engine is a PDD-sponsored test engine that Josh gets to "test" for a bit while he waits for his Enforcer deckplate engine from D&J. There are a couple more videos coming out soon and they will reveal more details on the second comp wet block, how it holds up on the dyno, etc. Stay tuned!!!! __________________ 95' 2wd Junker Drag Truck 1502 HP Fuel-Only 12mm P7100 Pump SXE 472 over GTX55 116mm OEM 12v Block

08-09-2020, 10:26 PM	#42
Empty_Pockets Name: Empty_Pockets Title: Undercover Epa agent Status: Not Here Join Date: Oct 2016 Location: Va wv line Member`s Gallery Posts: 870	Definitely should have called banks�� __________________ NIC R Too many trucks

08-09-2020, 10:32 PM	#43
biggy238 Name: biggy238 Title: Too Much Time Status: Not Here Join Date: Aug 2008 Location: Just North of Wrong Member`s Gallery Posts: 10,868	That sheds some light on Zacks post that was taken down. What was put up wasn't directed toward Josh or PDD, but his cheerleaders in the comments certainly were. Sent from my motorola one action using Tapatalk __________________ Check out @bdmaximusworx 05.5 Campanella White TDi Jetta 5spd 45.5MPG -Little Sexy '10 Silver F250 CCLB 4X4 6.4L cummins Swapped Insta @trash.panda250

08-10-2020, 11:05 AM	#44
WUnderwood Name: WUnderwood Title: CompD Minion Status: Not Here Join Date: Aug 2006 Location: Texas Member`s Gallery Posts: 8,418	I have no dog in this fight, but I have a lot of respect for Josh's attitude/perseverance. Hope you get it all figured out, and are able to get well north of 2k hp. __________________ 2011 Ford F-150 Lariat 4X4 RIP BFD99, jponder, and Forrest Nearing

08-10-2020, 11:37 AM	#46
mhuggler Name: mhuggler Title: One piece at a time Status: Not Here Join Date: Sep 2007 Location: Uno, Pa. Member`s Gallery Posts: 1,523	Why is the name "Banks" even being mentioned? Or was he being sarcastic? Sometimes if somebody has especially dry sarcasm I'll miss it occasionally. __________________ 2002 2500 4x4 ETH/DEE-F1 Mach 5's/62/65/12/Smarty/ATS Ex.manifold/AFE intake/TST Comp./.020 marine gasket/o-ringed/ARP studs/5"stacks/Airdog 150/Isspro guages/Southbend 3600 DD/3.54 gears/leveling kit/Bilstein 5100frt,5150rr/37" BFG A/T's on 18" Eagle 114's/Borgeson SS/DSS

08-10-2020, 11:16 AM	#45
Snedge Name: Snedge Title: Comp Diesel Sponsor Status: Not Here Join Date: Sep 2006 Location: Western Pa. Member`s Gallery Posts: 18,859	Does Josh have a magic tree that grows money, if not, is PDD hiring?

08-10-2020, 01:10 PM	#49
Snedge Name: Snedge Title: Comp Diesel Sponsor Status: Not Here Join Date: Sep 2006 Location: Western Pa. Member`s Gallery Posts: 18,859	By their first names and stuff?

08-11-2020, 09:00 AM	#52
4x4dually Name: 4x4dually Title: Moderator Status: Not Here Join Date: Jan 2007 Location: Stillwater, OK Member`s Gallery Posts: 31,812	It's sad that when a guy tries new things, makes big goals, then shoots a piston outdoors on his own dime….the internet start blabbering their oral diarrhea on all the things that were or weren't done and who was to blame. Those people should just grab a big ol' cup of STFU and enjoy the show. __________________ Jory 2009 4x4 3500 MCLB "There are people far less intelligent than you making a living doing this stuff." - Jeff Mumau Last edited by 4x4dually; 08-11-2020 at 09:01 AM.