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General Diesel Tech Farm equipment, Medium Duty, Big Rigs, and other General discussion can be found in here. |
05-16-2018, 01:45 PM
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#17301
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Name: allan5oh
Title: Too Much Time
Status: Not Here
Join Date: Oct 2012
Member`s Gallery
Posts: 1,106
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Quote:
Originally Posted by zfaylor
It is honestly such an arbitrary number that it depends entirely on what you are doing, what wheels they are, what you are after with the truck, etc... For instance: Let's take an HX60 into account. In a scenario where the front side of the thrust is getting trashed consistently with 2:1 on an over the road application you want to get drive pressure down for pure reliability. Obviously the turbine forces are so far outweighing the compressor side that it is breaking through the oil film on the bearing and trashing it. The same turbo in a competition setting you WANT that high drive pressure in most cases to keep the thing lit at the end of the track. OR look at it this way: let's say that 2:1 drive is with a 3.4 turbine vs a 3.6. The 3.4 may not trash the thrust with 2:1 as opposed to a 3.6 as the 3.4 may apply less thrust load than the 3.6 with the same drive pressures. The next thing you have to think about and take into account is why the drive pressure is there. Is it because you are physically choking it with too small of a turbine side or is it because you are requiring so much shaft hp to maintain the demands of the compressor side (be it side or pressure or both) that it just takes that much drive pressure to achieve your goals?
Long story short: drive pressure is for tuning a setup if you know the parameters you are after. Past that don't worry about it unless you have either reliability issues or issues staying on top of the turbo.
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Mr. Zfaylor lets this nugget slide past the filter. Thanks!
So in the HX60 context, on the street you want low drive pressure for reliability, but competition you want high drive pressure to generate enough shaft HP to spin the compressor where you want it. But having too small a turbine side and the resulting high drive pressure is something completely different.
__________________
All of your BSFCs are belong to me
Last edited by allan5oh; 05-16-2018 at 01:52 PM.
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05-16-2018, 05:58 PM
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#17302
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Name: Rig Wrench
Title: Wannabe Tech
Status: Not Here
Join Date: Jan 2016
Location: In the ditch
Member`s Gallery
Posts: 1,045
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Ok kw ladies. 2011 w900 with an sdp, been deleted by deisel spec I believe, I dont think that has anything to do with this though. On a hard pull it will be fine for a bit, but after a good minute or soo off 100% torque load it will start to stumble then the boost and oil psi gage will drop to 0. Its still makes boost and oil pressure. But the gages read 0. Let up on the throttle for a bit and it goes back to normal. Ideas??
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05-16-2018, 06:32 PM
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#17303
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Name: jfaulkner
Title: Douche Hunter
Status: Not Here
Join Date: Sep 2007
Location: Ohio
Member`s Gallery
Posts: 5,864
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Quote:
Originally Posted by Rig Wrench
Ok kw ladies. 2011 w900 with an sdp, been deleted by deisel spec I believe, I dont think that has anything to do with this though. On a hard pull it will be fine for a bit, but after a good minute or soo off 100% torque load it will start to stumble then the boost and oil psi gage will drop to 0. Its still makes boost and oil pressure. But the gages read 0. Let up on the throttle for a bit and it goes back to normal. Ideas??
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So it’s heat related.
__________________
Quote:
Originally Posted by StainlessRRA
Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
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05-16-2018, 06:37 PM
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#17304
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Name: Rig Wrench
Title: Wannabe Tech
Status: Not Here
Join Date: Jan 2016
Location: In the ditch
Member`s Gallery
Posts: 1,045
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Quote:
Originally Posted by jfaulkner
So it’s heat related.
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Not sure. I miss spoke a little. The gages will mess up before the stumble. Its gotta be pullin quite a while before the stumble. Coolant never gets outa sight.
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05-16-2018, 07:00 PM
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#17305
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Name: jfaulkner
Title: Douche Hunter
Status: Not Here
Join Date: Sep 2007
Location: Ohio
Member`s Gallery
Posts: 5,864
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You drive it with ET and see if it follows the dash?
Could it be the ecm isn’t tuned correctly for the turbos? I’ve heard that can happen but usually only in Europe.
__________________
Quote:
Originally Posted by StainlessRRA
Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
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05-16-2018, 07:01 PM
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#17306
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Name: jfaulkner
Title: Douche Hunter
Status: Not Here
Join Date: Sep 2007
Location: Ohio
Member`s Gallery
Posts: 5,864
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Quote:
Originally Posted by Rig Wrench
Not sure. I miss spoke a little. The gages will mess up before the stumble. Its gotta be pullin quite a while before the stumble. Coolant never gets outa sight.
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Well I mean when the ecm/sensors are hot it stubbles, when they cool it comes back.
__________________
Quote:
Originally Posted by StainlessRRA
Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
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05-16-2018, 07:23 PM
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#17307
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Name: Rig Wrench
Title: Wannabe Tech
Status: Not Here
Join Date: Jan 2016
Location: In the ditch
Member`s Gallery
Posts: 1,045
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Quote:
Originally Posted by jfaulkner
Well I mean when the ecm/sensors are hot it stubbles, when they cool it comes back.
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Still registers in et. Im thinkin a couple seperate issues. Not enough time with it to narrow down the issues
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05-16-2018, 07:40 PM
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#17308
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Name: blackdiesel
Title: Diesel Enthusiast
Status: Not Here
Join Date: Feb 2009
Member`s Gallery
Posts: 243
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BRE,
Clean rig. Looks awesome
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05-16-2018, 07:52 PM
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#17309
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Name: jfaulkner
Title: Douche Hunter
Status: Not Here
Join Date: Sep 2007
Location: Ohio
Member`s Gallery
Posts: 5,864
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Quote:
Originally Posted by Rig Wrench
Still registers in et. Im thinkin a couple seperate issues. Not enough time with it to narrow down the issues
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Sounds like another datalink issue.
__________________
Quote:
Originally Posted by StainlessRRA
Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
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05-16-2018, 08:12 PM
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#17310
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Name: Rig Wrench
Title: Wannabe Tech
Status: Not Here
Join Date: Jan 2016
Location: In the ditch
Member`s Gallery
Posts: 1,045
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No connection issues with et. But ill start diggin again when i can get my hands on it for longer
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05-16-2018, 08:38 PM
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#17311
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Name: jfaulkner
Title: Douche Hunter
Status: Not Here
Join Date: Sep 2007
Location: Ohio
Member`s Gallery
Posts: 5,864
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Quote:
Originally Posted by Rig Wrench
No connection issues with et. But ill start diggin again when i can get my hands on it for longer
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Well the dash plug uses that j1922 to connect to the engine. With a glider the dash will work but you can’t connect to the engine without the j1922 jumper harness. So just because ET will connect the dash may not.
__________________
Quote:
Originally Posted by StainlessRRA
Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
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05-16-2018, 08:52 PM
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#17312
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Name: Rig Wrench
Title: Wannabe Tech
Status: Not Here
Join Date: Jan 2016
Location: In the ditch
Member`s Gallery
Posts: 1,045
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I think the miss is seperate from the gage issue. I had another W9 give me a similar issue last year but it ws a cummins with a junk cal in it. I think im gonna try and get a sdp ecm for trial. This is the 4th one in a month that's given me greif
Last edited by Rig Wrench; 05-16-2018 at 08:55 PM.
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05-17-2018, 11:24 PM
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#17313
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Name: BRE
Title: Too Much Time
Status: Not Here
Join Date: May 2010
Location: Southwest MO
Member`s Gallery
Posts: 12,705
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Truckers, lets see your rigs!
So I’ve not been in huge rushes the past couple tanks of fuel... I’ve been running 67mph area instead of 70-72mph. Apparently this truck doesn’t like it... my fuel mileage has went down both tanks. Only thing I’m not certain about is there has been some idling on both of those tanks. Like minimum 4 hours up to probably 8.
Ultimately I’m not even sure if 65-67 puts me in the right rpm range for any better mileage anyhow.
Sent from my iPhone using Tapatalk Pro
__________________
Rick
07 Dodge 3500 - Tow mirrors, silencer ring MIA, Spectra air filter.
Quote:
Originally Posted by jfaulkner
There really is nothing better than OEM. That goes for anything from turbos to boobs.
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RIP Dex KCCO
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05-18-2018, 05:42 AM
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#17314
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Name: kubotaorange76
Title: Too Much Time
Status: Not Here
Join Date: Aug 2006
Member`s Gallery
Posts: 309
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what rpm?
add the idle time back into the gallons, is it still lower?
probably need some airtabs and microblue . Maybe let bruace mallison work his magic on it
__________________
17' 6.7/6R140 CCLB
5.0, 6.6 & 4.9
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05-18-2018, 06:54 AM
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#17315
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Name: kubotaorange76
Title: Too Much Time
Status: Not Here
Join Date: Aug 2006
Member`s Gallery
Posts: 309
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how are the elogs working out for everyone
__________________
17' 6.7/6R140 CCLB
5.0, 6.6 & 4.9
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05-18-2018, 07:08 AM
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#17316
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Name: RockinRam96
Title: Too Much Time
Status: Not Here
Join Date: Sep 2011
Location: Shortsville, NY
Member`s Gallery
Posts: 2,699
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Quote:
Originally Posted by BRE
So I’ve not been in huge rushes the past couple tanks of fuel... I’ve been running 67mph area instead of 70-72mph. Apparently this truck doesn’t like it... my fuel mileage has went down both tanks. Only thing I’m not certain about is there has been some idling on both of those tanks. Like minimum 4 hours up to probably 8.
Ultimately I’m not even sure if 65-67 puts me in the right rpm range for any better mileage anyhow.
Sent from my iPhone using Tapatalk Pro
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What are you running for manifold pressure just cruising at those speeds? Both at 65-67 and 70-72?
__________________
05 Jeep Liberty CRD
11 Dodge
1986 Freightliner Cat 425
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05-18-2018, 01:07 PM
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#17317
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Name: BRE
Title: Too Much Time
Status: Not Here
Join Date: May 2010
Location: Southwest MO
Member`s Gallery
Posts: 12,705
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65-67mph in 18th is 1350~rpm 15lbs give or take.
70-72 is 1400-1450rpm with about the same forced air pressure.
Mind you, this trailer is heavy, 12ft spread, and is 53ft of sail.
Sent from my iPhone using Tapatalk Pro
__________________
Rick
07 Dodge 3500 - Tow mirrors, silencer ring MIA, Spectra air filter.
Quote:
Originally Posted by jfaulkner
There really is nothing better than OEM. That goes for anything from turbos to boobs.
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RIP Dex KCCO
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05-18-2018, 05:38 PM
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#17318
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Name: Rig Wrench
Title: Wannabe Tech
Status: Not Here
Join Date: Jan 2016
Location: In the ditch
Member`s Gallery
Posts: 1,045
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Quote:
Originally Posted by BRE
65-67mph in 18th is 1350~rpm 15lbs give or take.
70-72 is 1400-1450rpm with about the same forced air pressure.
Mind you, this trailer is heavy, 12ft spread, and is 53ft of sail.
Sent from my iPhone using Tapatalk Pro
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Maybe try goin kw? Thats what all the s are goin to. Worried about their bsfc's
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05-18-2018, 06:09 PM
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#17319
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Name: jfaulkner
Title: Douche Hunter
Status: Not Here
Join Date: Sep 2007
Location: Ohio
Member`s Gallery
Posts: 5,864
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Quote:
Originally Posted by Rig Wrench
Maybe try goin kw? Thats what all the s are goin to. Worried about their bsfc's
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I can assure you I couldn’t care any less about my BSFC’s and Paccar bought Pete so the homos would stay out of the KW’s.
__________________
Quote:
Originally Posted by StainlessRRA
Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
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05-18-2018, 06:36 PM
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#17320
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Name: Rig Wrench
Title: Wannabe Tech
Status: Not Here
Join Date: Jan 2016
Location: In the ditch
Member`s Gallery
Posts: 1,045
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Quote:
Originally Posted by jfaulkner
I can assure you I couldn’t care any less about my BSFC’s and Paccar bought Pete so the homos would stay out of the KW’s.
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Where your mistaken. They bought pete because the undesireables took to kw soo much. Just think though, at least you can get your parts at wal-mart
Last edited by Rig Wrench; 05-18-2018 at 06:42 PM.
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