Duramax Diesels Forum Truck of the Week
  #1  
Old 06-24-2018, 08:37 AM
TheBac's Avatar
TheBac TheBac is offline
Why do I keep doing this?


 
Join Date: Apr 2008
Location: Mid Michigan
Posts: 11,539

Default Timesert/helicoil upper oil pan +

Just curious...
I have a spare upper oil pan for the LB7 that has a stripped out hole for one of the rear cover bolts. I think it's 12mm?
Do you think it would hold up to timesert/helicoil the hole, or should I have a fab shop weld the hole shut and attempt to redrill/thread the thing instead?


Im thinking of using this on the little truck, so I then have this to ask:
If I cut 2" from the bottom of the front 1/3 of the pan, is it then OK to remove the windage tray completely or should I find a way to keep it installed? There might be only 4 of the 8 bolts available once I cut the pan, thats the problem.
__________________
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
  #2  
Old 06-24-2018, 08:49 AM
rcr1978's Avatar
rcr1978 rcr1978 is offline
Hotrodder
 
Join Date: Apr 2007
Location: Spring Creek, NV
Posts: 572
Default

I think they work really good assuming there is enough material in the area they are used. I cant remember how thick it is right there though.
__________________
04 LB7 ECSB Built motor, Wagler billet narrowed Rods, Callies billet crank, Mahle Race Cast pistons, Randy's Girdle, Wagler/Callies Stage 1 alterfire cam, Exergy 100% SAC's, dual CP3's, Randy's race ported heads, Profab cast flow/up pipes, and S475 over stock twins for now more later.
2010 LMM CCLB-Tuning/Exhaust
2015 LML Cab and chassis- Tuning/Exhaust
Reply With Quote
  #3  
Old 06-24-2018, 09:11 AM
Chevy1925's Avatar
Chevy1925 Chevy1925 is offline
don't know sh!t about IFS

 
Join Date: Oct 2009
Location: Phoenix Az
Posts: 14,328

Default

I would helicoil it and not worry. It will hold better than the other threads
__________________
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 LL7 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
  #4  
Old 06-24-2018, 09:29 AM
JoshH's Avatar
JoshH JoshH is offline
Daggum farm truck
 
Join Date: Feb 2007
Location: Texas!!!
Posts: 12,636

Default

I agree with those guys.
__________________
06 Silverado 4x4 CC/SB

06 Express 2500 Duramax Van "The Dumpster"


Reply With Quote
  #5  
Old 06-24-2018, 10:03 AM
Hambone's Avatar
Hambone Hambone is offline
Always learning
 
Join Date: Jan 2016
Location: Florida
Posts: 415
Default

X4 helicoil would be best
It’s really hard to make a good weld on something of that nature... dirty, oilly and who knows if it’s straight aluminum or has some funky metal properties!
Definitely should keep the windage tray.
Maybe look into fabing your own since it sounds like your tolerances are going to be tight?
__________________
2017 2500 CC/LB "L5P" WT

2005 2500 CC/SB "LLY" LTZ
Typical mods for Longevity
awaiting stuff to go BooM then replace with more go fast parts!

And a few other retired Duramax's
06 360k aka Hog truck
07 320k aka Shop truck
07 340k Flatbed spare welding rig
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 03:28 AM.


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