Duramax Diesels Forum Truck of the Week
  #1  
Old 10-01-2019, 06:59 PM
wilsondiesel's Avatar
wilsondiesel wilsondiesel is offline
Hotrodder
 
Join Date: Nov 2015
Location: Sedalia, MO
Posts: 174
Default Which forged piston??

Iím building a lb7 sled pull engine this winter with a partial filled block and Iím having a hard time deciding between Mahle Forged, Fingers Mahle Forged, Ross pistons or CP. is Aries owned by CP now? Or are there any other brands I should look into? Diamond is a little rich for my blood. From my research no one has had any luck with CP but thought Iíd see if that has changed in the last couple years.
__________________
2002 LB7 the fun truck
2018 L5P
DD-2001 VW Jetta TDI 5 speed
Reply With Quote
  #2  
Old 10-01-2019, 07:32 PM
Ne-max's Avatar
Ne-max Ne-max is offline
I like turtles
 
Join Date: Nov 2011
Location: Lincoln, Ne
Posts: 3,132

Default

Fingers for sure. The cast have held 1700+hp. Have not seen a failure with them except for build error.
__________________
2013 ccsb Tow rig
2006 rclb 6.6
The fun stuff. Built motor, trans, triples, nitrous
Reply With Quote
  #3  
Old 10-01-2019, 08:26 PM
JoshH's Avatar
JoshH JoshH is offline
Daggum farm truck
 
Join Date: Feb 2007
Location: Texas!!!
Posts: 13,226

Default

Regular Mahle forged
__________________
06 Silverado 4x4 CC/SB

06 Express 2500 Duramax Van "The Dumpster"


Reply With Quote
  #4  
Old 10-02-2019, 04:27 AM
ikeG's Avatar
ikeG ikeG is offline
Oughta Know Better
 
Join Date: Apr 2011
Location: Western PA
Posts: 2,035

Default

Our forged fingers held 1600+ for a while and are still going strong for someone else.

Sent from my SM-G960U using Tapatalk
__________________
Isaac Griffith, formerly 04jimc
03 Chev CC SB ZF6-Gone
04 GMC CC SB SLT LLY
597/1096 Batmostocker-Gone

06 GMC CC DRW-Gone
08 GMC CC DRW-Gone
New DD/Beater: Beat up 06 GMC CCSB w/ 252,000 miles
Current Tow Rig-12 Ram 4500 Crew


'Oughta K
now Better'- PPL Lim Pro Stock 05 3500 Crew Cab 158" WB 2014 PPP 2.6 Champions
Thanks to Blackout Performance

Reply With Quote
  #5  
Old 10-02-2019, 04:30 AM
Duramax710 Duramax710 is offline
FNG
 
Join Date: Jun 2015
Posts: 11
Default

I have fingers for sale. Have original paperwork and specs.
Reply With Quote
  #6  
Old 10-02-2019, 04:53 AM
duramaxzak's Avatar
duramaxzak duramaxzak is offline
Wanna be puller!
 
Join Date: Nov 2008
Location: Minnesota
Posts: 2,236
Default

I’ve had good luck with Mahle forged in 2 separate motors, both 1,300 + hp.
__________________
- ZAK

2011 CHEVY 2500HD CCSB Duramax/Allison LTZ

2005 CHEVY 2500HD RCLB 2WD Duramax/Allison

2002 GMC 2500HD RCLB Duramax/allison 2.6 puller
Special thanks to:
- Danville performance, Mark.
- Suncoast transmission's, Andrew.
- Wehrli custom fab, Jason.
- Profab, Rick
- Turbo performance, Levi.
- HSP, Joe and Dave.
- SoCal diesel.
- Wagler competition, Jeramy.
Reply With Quote
  #7  
Old 10-02-2019, 04:55 AM
ZeroGravity58's Avatar
ZeroGravity58 ZeroGravity58 is offline
Hotrodder
 
Join Date: Mar 2008
Location: Maryland
Posts: 1,003

Default

What's the general opinion of running a forged mahle piston on the street if you put less then 10k a year on the motor?
__________________
09 lmm ccsb ltz, moonshine, mpi s480 over 68mm vgt, sdp y bridge, BigDipper trans, 60 overs, 10mm pump, ppe up pipes and manifold, banks intercooler & exhaust, airdog165 w/sump, isspro guages, traction bars, the list goes on...Big thanks to BigDipper!
01 lb7 red RC/LB 11.58@119 MPH, SOLD
01 lb7 Black CC/LB, SOLD
Reply With Quote
  #8  
Old 10-02-2019, 05:43 AM
Bdsankey's Avatar
Bdsankey Bdsankey is offline
Gearhead


 
Join Date: Feb 2018
Location: Neenah, Wisconsin
Posts: 1,092

Default

Quote:
Originally Posted by wilsondiesel View Post
Iím building a lb7 sled pull engine this winter with a partial filled block and Iím having a hard time deciding between Mahle Forged, Fingers Mahle Forged, Ross pistons or CP. is Aries owned by CP now? Or are there any other brands I should look into? Diamond is a little rich for my blood. From my research no one has had any luck with CP but thought Iíd see if that has changed in the last couple years.
My CP are holding up fine, 2 seasons of hard running (maxing out a 475/87 last year and now running a 480/96).
__________________
Current Rides:
1) Toy: 2005 LLY ECSB, Leather, Sunroof
-1340hp/2200ft-lbs @ ATS Diesel (06/04/19)
-Tuned by Zach @ Starlite
-Built Motor, Forced Inductions Billet ETR Gen 4 S480/96/1.10 T6 w/V2 Race Cover, Modded Exergy 250% Injectors, Exergy 14mm Street Pump/LBZ CP3, Goerend Q Converter, Billet Trans, Fuelab Supply Pump/Reg, RCD & Beans Sumps, Front E-Locker, TrueTrac, Yukon 4340 Rear Shafts, Traction Bars, DHD Center Link Brace, DHD Lower Crossmember Support


2) DD/Tow Rig: 2002 LB7 CCSB, Leather, Loaded
-Tuned by Starlite
-Bosch NEW Injectors, FASS 150, 3" Downpipe, 4" Downpipe Back, RCD Sump, PPE Sleeves, DHD Centerlink Brace, DHD Lower Crossmember Support, Steering Wheel Radio Control Swap
Reply With Quote
  #9  
Old 10-02-2019, 06:02 AM
Ne-max's Avatar
Ne-max Ne-max is offline
I like turtles
 
Join Date: Nov 2011
Location: Lincoln, Ne
Posts: 3,132

Default

Quote:
Originally Posted by ZeroGravity58 View Post
What's the general opinion of running a forged mahle piston on the street if you put less then 10k a year on the motor?
Heat cycles play a role also.

In my opinion fingers cast is plenty for 95% of the builds out there. They hold up longer then a stock/callies compstar crank can handle. Until you do a SoCal narrow journal and a lml block save your money.
__________________
2013 ccsb Tow rig
2006 rclb 6.6
The fun stuff. Built motor, trans, triples, nitrous
Reply With Quote
  #10  
Old 10-02-2019, 07:33 AM
Chevy1925's Avatar
Chevy1925 Chevy1925 is offline
don't know sh!t about IFS

 
Join Date: Oct 2009
Location: Phoenix Az
Posts: 16,094

Default

Mahle forged or fingers forged.

i wouldnt run a forged on the street with how good fingers casts hold up. its not the mileage as much as it is the design of forged pistons that dont give the best roll for "DDing" or "street use". The mileage still has some part to play though.
__________________
Quote:
Originally Posted by JoshH View Post
Mike L is my role model. I want to be like him when I grow up.
James

02 LB7, LLY, LBZ, LMM, LML, L5P 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
Reply With Quote
  #11  
Old 10-02-2019, 11:03 PM
kidturbo's Avatar
kidturbo kidturbo is offline
Piston Tester
 
Join Date: Jul 2010
Location: Somewhere On The Ohio
Posts: 972
Default

Quote:
Originally Posted by ZeroGravity58 View Post
What's the general opinion of running a forged mahle piston on the street if you put less then 10k a year on the motor?
Not impressed with their forged pistons. Buddy of mine cracked all 8 in under a couple hours in his boat running single S475. I confirmed it with mahle engineers.

IMO forged are best for short hi-power nitrous blasts, then allowed to cool naturally for an hour or two..

Sent from my SAMSUNG-SM-G890A using Tapatalk
Reply With Quote
  #12  
Old 10-03-2019, 03:58 AM
Stingpuller's Avatar
Stingpuller Stingpuller is offline
The Pusher Man
 
Join Date: Jan 2007
Location: central Ohio
Posts: 2,126

Default Pistons

The problem with Mahle forged pistons is that they are made from 4032. It has a high silicon content. They are hard and with heat brittle. They are still stronger than cast but not as good as 2618. If it a high power driver the Fingers cast seem to hold up as good as any in a driver. All out power run a 2618 material piston and never look back.
__________________
2007 GMC c4500 Regency Western Hauler 235" Powerflow Dragster Powerflow, Howards rods,Arias piston,Fleece custom daul CP3, Fleece custom 80mm single turbo, Fleece injectors, 9" rear end, SoCal Diesel, Hughes powerglide, Mike's Race Wiring, Fuelabs pump, Ny-trex nitrous, Isspro gauges and Hamilton Cams thanks Zach
Reply With Quote
  #13  
Old 10-03-2019, 08:06 AM
ZeroGravity58's Avatar
ZeroGravity58 ZeroGravity58 is offline
Hotrodder
 
Join Date: Mar 2008
Location: Maryland
Posts: 1,003

Default

Will they ever release the monotherm piston for the dmax? If they did would that be the best all out HP piston? Or maybe not due to the weight?
__________________
09 lmm ccsb ltz, moonshine, mpi s480 over 68mm vgt, sdp y bridge, BigDipper trans, 60 overs, 10mm pump, ppe up pipes and manifold, banks intercooler & exhaust, airdog165 w/sump, isspro guages, traction bars, the list goes on...Big thanks to BigDipper!
01 lb7 red RC/LB 11.58@119 MPH, SOLD
01 lb7 Black CC/LB, SOLD
Reply With Quote
  #14  
Old 10-03-2019, 08:14 AM
kidturbo's Avatar
kidturbo kidturbo is offline
Piston Tester
 
Join Date: Jul 2010
Location: Somewhere On The Ohio
Posts: 972
Default

Mahle won't, been there. I was working with Daimond on one, then JJ left, and so didn't their interest... It's mostly a weight issue, best we got down to was 200g over cast.

Sent from my SAMSUNG-SM-G890A using Tapatalk
Reply With Quote
  #15  
Old 10-03-2019, 01:30 PM
wilsondiesel's Avatar
wilsondiesel wilsondiesel is offline
Hotrodder
 
Join Date: Nov 2015
Location: Sedalia, MO
Posts: 174
Default

Thanks everyone for the input, leaning towards Mahle forged for my application.
__________________
2002 LB7 the fun truck
2018 L5P
DD-2001 VW Jetta TDI 5 speed
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 11:37 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
vB.Sponsors