Duramax Diesels Forum Truck of the Week
  #76  
Old 07-13-2017, 03:38 AM
cardiac cardiac is offline
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Default Smoke

Well the 60 overs and the 68mm are for sale if you would like to try and prove your theory. I'm sick of the smoke caused by the turbo lag at low rpm's.
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  #77  
Old 07-13-2017, 07:29 AM
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Quote:
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Well the 60 overs and the 68mm are for sale if you would like to try and prove your theory. I'm sick of the smoke caused by the turbo lag at low rpm's.
its really not a theory, ive personally been in two trucks with this setup that are clean. Even sat in the truck with the tuner as he dialed it in to make sure it was up to what i wanted for a built truck . you have another issue that flat out needs to be address that we probably wont be able to do over text
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  #78  
Old 07-13-2017, 08:38 AM
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Will you be charging for this added service ? LOL
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  #79  
Old 07-13-2017, 01:24 PM
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What do you want for that 68? I'll smoke the whole hillside out for all I care.
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  #80  
Old 07-14-2017, 06:06 PM
cardiac cardiac is offline
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Default Fuel return line

Well I been thinking. I changed out all the factory fuel return lines with 1/8" hose between the injectors going into a 1/4" tee out of that tee into a 5/16" tee that was going into the 10mm pump and out to the return line with 5/16" hose.
With all that being said, could the pump put out more fuel to the return than the 5/16" hose can get rid of and be causing extra fuel to stay in the cyl and cause the extra smoke?
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  #81  
Old 07-14-2017, 06:16 PM
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To end up in the cylinder, the return line would be hundreds, if not thousands of PSI. And even then, my limited understanding of the solenoid injectors says that they would just stop firing at some point, not hang open.

If you swapped injectors and the problem stayed with the cylinder, not the injector, the issue isn't the injector. It is something else. Could be electrical, could be mechanical, but it isn't the injector.
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  #82  
Old 07-14-2017, 06:21 PM
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Ok thanks
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  #83  
Old 07-17-2017, 11:02 AM
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Quote:
Originally Posted by cardiac View Post
Well I been thinking. I changed out all the factory fuel return lines with 1/8" hose between the injectors going into a 1/4" tee out of that tee into a 5/16" tee that was going into the 10mm pump and out to the return line with 5/16" hose.
With all that being said, could the pump put out more fuel to the return than the 5/16" hose can get rid of and be causing extra fuel to stay in the cyl and cause the extra smoke?
I changed out all my fuel return and feed lines, I did talk to Exergy about this, he did say that too small of a fuel return can cause issues. One issue being that the fuel pump builds more pressure than is commanded because it cant return the fuel. So thats something to be careful of.
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  #84  
Old 07-17-2017, 03:01 PM
Kunz111 Kunz111 is offline
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I'll buy/trade you my 61k mile motor for your built motor if you wanna go back to stock.
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  #85  
Old 07-17-2017, 03:12 PM
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Quote:
Originally Posted by cardiac View Post
Well I been thinking. I changed out all the factory fuel return lines with 1/8" hose between the injectors going into a 1/4" tee out of that tee into a 5/16" tee that was going into the 10mm pump and out to the return line with 5/16" hose.

With all that being said, could the pump put out more fuel to the return than the 5/16" hose can get rid of and be causing extra fuel to stay in the cyl and cause the extra smoke?


It should not do that but will cause failure from heat build up. All my return god from minimal 4 am to 8 am. I calculated return based off information from exergy on my set and made sure my return exceeded any possible flow on return.


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  #86  
Old 07-17-2017, 06:03 PM
cardiac cardiac is offline
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Default Return lines

Where did you find (All my return god from minimal 4 am to 8 am.) hose and fitting for the injectors? I can make all the other return hoses bigger if I could get the injectors hoses bigger than stock.
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  #87  
Old 07-17-2017, 06:09 PM
cardiac cardiac is offline
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Default turbo

What would a guy expect to pay to swap turbo's? Do you have to raise the back of the cab to get to the up pipe bolts? I got quoted 850 for 10 hours is that in the ball park?
It was easy to install the turbo on the engine stand. lol
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  #88  
Old 07-17-2017, 10:11 PM
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10 hours is plausible. It is trivial on am engine stand, but sucks hard in the truck. IMO, raising the cab would be quicker than working around it.

If you don't have a bunch of aftermarket stuff running into your cab, raising the cab is probably an hour or two, then the turbo is cake. I'd try and talk the shop down below 10 hours, but really, expect to pay at least 6-8.

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  #89  
Old 07-18-2017, 03:05 AM
cardiac cardiac is offline
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Thanks, he came down from 12hr to 10hr trying to help out, because of all the problems I'm having.
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