WasteGate Blockoff - Diesel Bombers



Chevy/GMC Duramax 01-04 LB7 Discussion of Chevy and GMC Trucks with LB7 Duramax Turbo Diesel Engines

Reply
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 07-16-2009, 11:13 AM
DuramaxDiesel02's Avatar
Diesel Enthusiast
Thread Starter
 
Join Date: Jul 2009
Location: Flushing,MI
Posts: 293
Default WasteGate Blockoff

Anyone here ever tryd it?
Iv done it and noticed a small improvement.
anything else that will make it even more noticable?
Reply With Quote
  #2  
Old 07-16-2009, 09:34 PM
uwyo_dmax's Avatar
Diesel Enthusiast
 
Join Date: Oct 2008
Location: Laramie WY
Posts: 199
Default

I think you'll notice when your turbo goes boom
Reply With Quote
  #3  
Old 07-16-2009, 10:24 PM
2500HeavyDuty's Avatar
Super Moderator
 
Join Date: Oct 2007
Location: Houston, Tx
Posts: 14,880
Default

makes drive pressure go up, it does hit higher boost but pressure ratio will be off and drive pressure will only get higher with tuning and turbo will go eventually from over spinning
Reply With Quote
  #4  
Old 07-20-2009, 12:21 AM
Diesel Fan
 
Join Date: Aug 2008
Location: MS
Posts: 27
Default

Yep. 40psi max. Stock turbo most efficient power at 28-30psi. Anything over 30 and your out of the compressor map.
Reply With Quote
  #5  
Old 07-20-2009, 09:49 AM
DuramaxDiesel02's Avatar
Diesel Enthusiast
Thread Starter
 
Join Date: Jul 2009
Location: Flushing,MI
Posts: 293
Default

So is this something not worth noticing the diffrences?
Should I unplug the Line?
Reply With Quote
  #6  
Old 07-20-2009, 09:42 PM
2500HeavyDuty's Avatar
Super Moderator
 
Join Date: Oct 2007
Location: Houston, Tx
Posts: 14,880
Default

Quote:
Originally Posted by scramHD View Post
Yep. 40psi max. Stock turbo most efficient power at 28-30psi. Anything over 30 and your out of the compressor map.

any stock duramax turbo wont last very long at 40psi. the lb7 turbo falls off the map at 32psi and anything beyond that its very unefficient
Reply With Quote
  #7  
Old 07-20-2009, 09:44 PM
2500HeavyDuty's Avatar
Super Moderator
 
Join Date: Oct 2007
Location: Houston, Tx
Posts: 14,880
Default

Quote:
Originally Posted by DuramaxDiesel02 View Post
So is this something not worth noticing the diffrences?
Should I unplug the Line?

no leave it as it is
Reply With Quote
  #8  
Old 07-23-2009, 07:52 AM
DuramaxDiesel02's Avatar
Diesel Enthusiast
Thread Starter
 
Join Date: Jul 2009
Location: Flushing,MI
Posts: 293
Default

Quote:
Originally Posted by 2500HeavyDuty View Post
no leave it as it is
So I should return it the way it was normally?(Gate not Blocked)
Reply With Quote
  #9  
Old 07-23-2009, 04:56 PM
2500HeavyDuty's Avatar
Super Moderator
 
Join Date: Oct 2007
Location: Houston, Tx
Posts: 14,880
Default

yes
Reply With Quote
  #10  
Old 08-05-2009, 10:21 PM
Diesel Fan
 
Join Date: Aug 2008
Location: MS
Posts: 27
Default

Quote:
Originally Posted by 2500HeavyDuty View Post
any stock duramax turbo wont last very long at 40psi. the lb7 turbo falls off the map at 32psi and anything beyond that its very unefficient
There are several trucks out there running non wastegated turbos. It can be done. Its all in the tuning. You wont make any more power at 38 than 32. 32 is just a number you read. Each truck is different. Mine maxes at 30psi, as my tuning will prove it. Others max at 28, some at 33. Some stock turbos wont make more than 500-520hp. While others support 570-595hp. This has been proven.
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
External wastegate wpg6.5 12 Valve 2nd Gen Dodge Cummins 94-98 0 02-19-2015 07:27 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 08:48 AM.