Duramax Diesels Forum Truck of the Week
  #31  
Old 04-13-2017, 09:01 PM
LBZ's Avatar
LBZ LBZ is offline
Super Moderator
 
Join Date: Jul 2007
Location: Ontario
Posts: 9,925

Default

Quote:
Originally Posted by quinton View Post
well when you have to replace it three times for the same reason you will.
I would be questioning that statement in itself if I were you.

Hundreds maybe thousands of people pull and race and some also DD their trucks with bone stock pumps and never even have a leak let alone the level and amount of failures that you have had.

Also for many years almost nobody was doing this mod to the pump and spinning high rpms without issue. It wasn't until a few pullers had them come apart, with the extended periods of high rpms that they do, and so then start welding impellers did it catch on as the thing to do. Many see it today as preventitive. Especially considering the pia factor to replace it. Myself I'm not sold on the idea everyone needs it.

So, not saying you're doing anything wrong at all. Maybe it's just bad luck, maybe delco quality control or their pumps aren't what they used to be. Maybe we are running these engines different from how we did 10 years ago.

All I know is I'd be looking a little deeper into my engine if I were you. Myself in my LBZ I had numerous pulls and passes up to 4000 rpm and the original pump was still in the engine with 200 000 miles on it give or take when the crank broke. Never even leaked a drop.

Sent from my D5803 using Tapatalk
Reply With Quote
  #32  
Old 04-13-2017, 09:20 PM
x MadMAX DIESEL's Avatar
x MadMAX DIESEL x MadMAX DIESEL is offline
<<<< No Horsepower

 
Join Date: Dec 2008
Location: Lexington, Ky
Posts: 7,496

Default Busted Danville pinned pump

Quote:
Originally Posted by LBZ View Post
I would be questioning that statement in itself if I were you.

Hundreds maybe thousands of people pull and race and some also DD their trucks with bone stock pumps and never even have a leak let alone the level and amount of failures that you have had.

Also for many years almost nobody was doing this mod to the pump and spinning high rpms without issue. It wasn't until a few pullers had them come apart, with the extended periods of high rpms that they do, and so then start welding impellers did it catch on as the thing to do. Many see it today as preventitive. Especially considering the pia factor to replace it. Myself I'm not sold on the idea everyone needs it.

So, not saying you're doing anything wrong at all. Maybe it's just bad luck, maybe delco quality control or their pumps aren't what they used to be. Maybe we are running these engines different from how we did 10 years ago.

All I know is I'd be looking a little deeper into my engine if I were you. Myself in my LBZ I had numerous pulls and passes up to 4000 rpm and the original pump was still in the engine with 200 000 miles on it give or take when the crank broke. Never even leaked a drop.

Sent from my D5803 using Tapatalk


I agree 100% stock water pump here knock on wood.
Also how does gm parts have anything to do with a pin falling out that was never installed by gm in the first place? What kind of pin is used in that? A roll pin?
__________________
Ben
LBZ Stock Charger
12.26@108.8
7.78@87.7


2.5 puller in the Mecca!!

Manual Mafia

Quote:
Originally Posted by BgBlDodge View Post
Al gore invented driving the turbo.
Reply With Quote
  #33  
Old 04-14-2017, 04:24 AM
quinton's Avatar
quinton quinton is offline
Hotrodder
 
Join Date: Nov 2011
Location: Granbury Tx.
Posts: 1,832

Default

Quote:
Originally Posted by LBZ View Post
I would be questioning that statement in itself if I were you.

Hundreds maybe thousands of people pull and race and some also DD their trucks with bone stock pumps and never even have a leak let alone the level and amount of failures that you have had.

Also for many years almost nobody was doing this mod to the pump and spinning high rpms without issue. It wasn't until a few pullers had them come apart, with the extended periods of high rpms that they do, and so then start welding impellers did it catch on as the thing to do. Many see it today as preventitive. Especially considering the pia factor to replace it. Myself I'm not sold on the idea everyone needs it.

So, not saying you're doing anything wrong at all. Maybe it's just bad luck, maybe delco quality control or their pumps aren't what they used to be. Maybe we are running these engines different from how we did 10 years ago.

All I know is I'd be looking a little deeper into my engine if I were you. Myself in my LBZ I had numerous pulls and passes up to 4000 rpm and the original pump was still in the engine with 200 000 miles on it give or take when the crank broke. Never even leaked a drop.

Sent from my D5803 using Tapatalk


Some people have good luck some people have bad luck. I know quite a few guys that have busted a welded pump, and this is just local. 10 years ago we weren't running the power we are now, let alone the amount of built trucks today vs then. It's a matter of luck just like anything when it comes to racing.
__________________
EFIlive dsp5 by me, Built trans by me, 68 danville, stock fuel, lifted. died 6/20/2013 Cracked piston. Best time 12.75 on fuel

Alive 11/15/13: lowered, Built motor, s475, plenty of fuel, plenty of spray. Tune 3 fuel only 11.84 @114, Tune 5 little bit of spray 11.45 @ 121. Both times with melted turbine wheel, loose turbo from pedestal with blown out flange gasket. .
Reply With Quote
  #34  
Old 04-14-2017, 04:30 AM
TheBac's Avatar
TheBac TheBac is offline
Why do I keep doing this?


 
Join Date: Apr 2008
Location: Mid Michigan
Posts: 11,529

Default

I myself would be looking for a reason there's excessive pressure in the cooling system. Could very well be another issue causing the repeated water pump failures that you havent found yet.
__________________
Tom
"BBT" -- 2003 GMC CC/SB 4x4 12.14@111.15
"Flyin' Brick" -- 1999 Chevy 1500 RC/SB 2wd -- stalled out, no motivation
"The Cruzer" -- 2014 Chevy Cruze Diesel -- the fun little DD
"The Bigger Boat" -- 2011 Workhorse P700 - 6.0LS/Allison - what I drive at work


Two wrongs dont make a right, but three rights do make a left.

Reality is a matter of perspective.

This forum isn't for the weak of heart.....or wallet.

"Lets build a race car they said. Itll be fun they said. I don't know who "they" are.........but they need a good punch in the face!" -- mufflerguy (yb)
Reply With Quote
  #35  
Old 04-14-2017, 04:37 AM
quinton's Avatar
quinton quinton is offline
Hotrodder
 
Join Date: Nov 2011
Location: Granbury Tx.
Posts: 1,832

Default

Obviously the Danville one would have nothing to do with a engine problem. The weld broke holding the dowel in. My housing you can see how it just ate the dowel as it worked it's way out. Now if snapped the pin ya I could see it then.
__________________
EFIlive dsp5 by me, Built trans by me, 68 danville, stock fuel, lifted. died 6/20/2013 Cracked piston. Best time 12.75 on fuel

Alive 11/15/13: lowered, Built motor, s475, plenty of fuel, plenty of spray. Tune 3 fuel only 11.84 @114, Tune 5 little bit of spray 11.45 @ 121. Both times with melted turbine wheel, loose turbo from pedestal with blown out flange gasket. .
Reply With Quote
  #36  
Old 04-14-2017, 04:42 AM
TheBac's Avatar
TheBac TheBac is offline
Why do I keep doing this?


 
Join Date: Apr 2008
Location: Mid Michigan
Posts: 11,529

Default

I always thought those pins were press-fit.
Im going more off what Mark said about the pressures in the cooling system and what you said about having three different pumps fail. You very well could have another factor at work here that hasnt been discovered yet.
Not saying that lets the Danville pump off the hook, but I think its prudent to start doing some research as to "why".
__________________
Tom
"BBT" -- 2003 GMC CC/SB 4x4 12.14@111.15
"Flyin' Brick" -- 1999 Chevy 1500 RC/SB 2wd -- stalled out, no motivation
"The Cruzer" -- 2014 Chevy Cruze Diesel -- the fun little DD
"The Bigger Boat" -- 2011 Workhorse P700 - 6.0LS/Allison - what I drive at work


Two wrongs dont make a right, but three rights do make a left.

Reality is a matter of perspective.

This forum isn't for the weak of heart.....or wallet.

"Lets build a race car they said. Itll be fun they said. I don't know who "they" are.........but they need a good punch in the face!" -- mufflerguy (yb)
Reply With Quote
  #37  
Old 04-14-2017, 04:49 AM
quinton's Avatar
quinton quinton is offline
Hotrodder
 
Join Date: Nov 2011
Location: Granbury Tx.
Posts: 1,832

Default

Oh I understand. After the second pump busted I searched through cooling system, I replaced radiator, thermostats, checked oil cooler, hoses for a rag or something and nothing. Thought it might be headgasket but checked that also.
__________________
EFIlive dsp5 by me, Built trans by me, 68 danville, stock fuel, lifted. died 6/20/2013 Cracked piston. Best time 12.75 on fuel

Alive 11/15/13: lowered, Built motor, s475, plenty of fuel, plenty of spray. Tune 3 fuel only 11.84 @114, Tune 5 little bit of spray 11.45 @ 121. Both times with melted turbine wheel, loose turbo from pedestal with blown out flange gasket. .
Reply With Quote
  #38  
Old 04-14-2017, 05:06 AM
TheBac's Avatar
TheBac TheBac is offline
Why do I keep doing this?


 
Join Date: Apr 2008
Location: Mid Michigan
Posts: 11,529

Default

I was thinking you have a head lifting enough to over pressure the system but not enough to cause a definite, definable problem.
Did all three failures happen after doing the same things with the truck (ie...racing, high-hp run then let off throttle quick, burnouts, etc)??

Im not accusing, Im just asking.
__________________
Tom
"BBT" -- 2003 GMC CC/SB 4x4 12.14@111.15
"Flyin' Brick" -- 1999 Chevy 1500 RC/SB 2wd -- stalled out, no motivation
"The Cruzer" -- 2014 Chevy Cruze Diesel -- the fun little DD
"The Bigger Boat" -- 2011 Workhorse P700 - 6.0LS/Allison - what I drive at work


Two wrongs dont make a right, but three rights do make a left.

Reality is a matter of perspective.

This forum isn't for the weak of heart.....or wallet.

"Lets build a race car they said. Itll be fun they said. I don't know who "they" are.........but they need a good punch in the face!" -- mufflerguy (yb)
Reply With Quote
  #39  
Old 04-14-2017, 05:08 AM
quinton's Avatar
quinton quinton is offline
Hotrodder
 
Join Date: Nov 2011
Location: Granbury Tx.
Posts: 1,832

Default

The first one yes. The second one cruising at 70mph on highway.
__________________
EFIlive dsp5 by me, Built trans by me, 68 danville, stock fuel, lifted. died 6/20/2013 Cracked piston. Best time 12.75 on fuel

Alive 11/15/13: lowered, Built motor, s475, plenty of fuel, plenty of spray. Tune 3 fuel only 11.84 @114, Tune 5 little bit of spray 11.45 @ 121. Both times with melted turbine wheel, loose turbo from pedestal with blown out flange gasket. .
Reply With Quote
  #40  
Old 04-14-2017, 05:48 AM
x MadMAX DIESEL's Avatar
x MadMAX DIESEL x MadMAX DIESEL is offline
<<<< No Horsepower

 
Join Date: Dec 2008
Location: Lexington, Ky
Posts: 7,496

Default

Ohh I see they have a solid pin and weld to to the impeller. I see how a casting, material, or case hardening could prevent a good weld now from the vendor. That makes sense. But why the heck not just drill a hole, install a roll pin. Seems like a much better option on something like this than a welded solid


Sent from my iPhone using Tapatalk
__________________
Ben
LBZ Stock Charger
12.26@108.8
7.78@87.7


2.5 puller in the Mecca!!

Manual Mafia

Quote:
Originally Posted by BgBlDodge View Post
Al gore invented driving the turbo.
Reply With Quote
  #41  
Old 04-14-2017, 06:42 AM
jlawles2 jlawles2 is offline
Hotrodder
 
Join Date: Jan 2010
Location: Danbury, TX
Posts: 813
Default

Anyone ever thread the pin into the impeller then used thread locker? Instead of dowel pinning in the end like a key, on several of our hydraulic jacks, when they put the large diameter piston onto a stock chrome rod, they thread a setscrew crossways to lock the piston and rod together. Seems to keep them from spinning off when the jack gets twisted under load.
__________________
Silver Birch Metallic 2004.5 GMC K2500HD with 265/75's
Banks super scoop, tubing, intercooler, and cat back with the IQ on the Window (for now). BD driver side Exhaust manifold.
Airdog 150 on frame rail. Amsoil synthetics for lubrication, and dual Amsoil filters on the driver frame rail. PPE centrifuge install.
EGR blocked. PCV rerouted. Resonator blocked (reinstalled for looks). Bladerunner installed. Dead kitty by MBRP (front pipe) and down tube replaced with the MBRP (heat wrapped from the turbo down to the front pipe).
Performax Gauges by ISSPRO in pod over mirror and overhead console (console pod by PPE). Mike L Transmission.
----Looking to do an onboard air with a set of truck air horns. Want Nathan K5LA's but not in the budget at the moment.----

06 GMC CCSB 2WD LBZ SLT package. Traded for '17 Denali

18 Denali CCSB 2500 4WD Mineral Metallic with Cocoa/Dark Sand Interior
Reply With Quote
  #42  
Old 04-14-2017, 07:36 AM
LBZ1991's Avatar
LBZ1991 LBZ1991 is offline
Hotrodder
 
Join Date: Nov 2014
Location: Winfield, MO
Posts: 215

Default

Quote:
Originally Posted by quinton View Post
Obviously the Danville one would have nothing to do with a engine problem. The weld broke holding the dowel in. My housing you can see how it just ate the dowel as it worked it's way out. Now if snapped the pin ya I could see it then.
You're saying the dowel was welded? I've installed a danville pump and it was just pressed in like a normal dowel would be.
__________________
2006 CCSB
Moonshine tuned, Suncoast built trans by me with help from EVAN! Limitless 1078 converter, fass platinum 150, PPE race plug, k&n filter, DHD super high flow y bridge and cold pipe, Pcv reroute
Trans go jr, BT diesel works lock up controller, grizzly locker, custom centerlink brace, Lowered on 3in shackles, no overload, t bar bolts gone, custom air bags and caltracs.
305 50 20 Nitto 420s
12.83 @ 104.78
Reply With Quote
  #43  
Old 04-14-2017, 07:45 AM
JoshH's Avatar
JoshH JoshH is offline
Daggum farm truck
 
Join Date: Feb 2007
Location: Texas!!!
Posts: 12,632

Default

The pinned pumps I've seen used what looked like a roll pin.
__________________
06 Silverado 4x4 CC/SB

06 Express 2500 Duramax Van "The Dumpster"


Reply With Quote
  #44  
Old 04-14-2017, 08:30 AM
quinton's Avatar
quinton quinton is offline
Hotrodder
 
Join Date: Nov 2011
Location: Granbury Tx.
Posts: 1,832

Default

Yes it was tack welded.
__________________
EFIlive dsp5 by me, Built trans by me, 68 danville, stock fuel, lifted. died 6/20/2013 Cracked piston. Best time 12.75 on fuel

Alive 11/15/13: lowered, Built motor, s475, plenty of fuel, plenty of spray. Tune 3 fuel only 11.84 @114, Tune 5 little bit of spray 11.45 @ 121. Both times with melted turbine wheel, loose turbo from pedestal with blown out flange gasket. .
Reply With Quote
  #45  
Old 04-14-2017, 10:13 AM
FSUwelder1212 FSUwelder1212 is offline
Gearhead
 
Join Date: Oct 2012
Posts: 92
Default

Since the issue doesn't seem to be the pin shearing, but rather coming out. I would think if you used a bit shorter pin and then plug welded both ends of the hole shut, that would solve the issue. I don't think it would be all that difficult either.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 09:02 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
vB.Sponsors