Pdd 5x12s with k27 n no fuel plate? - Page 2 - Dodge Cummins Diesel Forum
94-98 Performance Parts Discussion Discussion of Performance Parts For the 94-98 Trucks No Advertising ...NO ADVERTISING

 1Likes
Reply
 
LinkBack Thread Tools Display Modes
post #13 of 24 (permalink) Old 05-16-2019, 10:33 PM Thread Starter
Newbie
 
Dmaxdude's Avatar
 
Join Date: Sep 2016
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Would a 4 inch exhaust lower egts considerably or is the stock exhaust straight piped fine?

Dmaxdude is offline  
Sponsored Links
Advertisement
 
post #14 of 24 (permalink) Old 05-17-2019, 08:46 AM
Diesel Head
 
GAmes's Avatar
 
Join Date: Sep 2009
Location: Killeen, TX
Posts: 15,792
Thanks: 148
Thanked 1,699 Times in 1,489 Posts
iTrader Score: 7 reviews
Quote:
Originally Posted by Dmaxdude View Post
Would a 4 inch exhaust lower egts considerably or is the stock exhaust straight piped fine?
No. The stock exhaust size will flow just fine to over 400 HP. When my stocker burned out the 4 inch MBRP didn't change my EGTs, at least not enough to read on the gauge.

97 3500, 2 WD, G56, slightly bombed, 1.3 million miles. Started the second million on 8/24/13
If you are lucky enough to be in Texas, you are lucky enough.
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
GAmes is offline  
post #15 of 24 (permalink) Old 05-17-2019, 03:28 PM Thread Starter
Newbie
 
Dmaxdude's Avatar
 
Join Date: Sep 2016
Posts: 8
Thanks: 0
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
Ok thanks!
Dmaxdude is offline  
Sponsored Links
Advertisement
 
post #16 of 24 (permalink) Old 05-17-2019, 04:11 PM
Diesel Head
 
GAmes's Avatar
 
Join Date: Sep 2009
Location: Killeen, TX
Posts: 15,792
Thanks: 148
Thanked 1,699 Times in 1,489 Posts
iTrader Score: 7 reviews
That information has been posted dozens of times. A little time to do some research will save you hours while waiting for someone to answer your questions.

97 3500, 2 WD, G56, slightly bombed, 1.3 million miles. Started the second million on 8/24/13
If you are lucky enough to be in Texas, you are lucky enough.
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
GAmes is offline  
post #17 of 24 (permalink) Old 05-20-2019, 04:35 PM
Diesel Head
 
alanack6795's Avatar
 
Join Date: Jun 2013
Location: Rhode Island
Posts: 4,309
Thanks: 102
Thanked 272 Times in 254 Posts
Garage
iTrader Score: 1 reviews
I have a 160 pump and need new injectors. I would like somewere around 275-350 hp. Should i get 5x12s? Friend of mine said it will run cooler with more fuel at less rack travel; if that makes any sense.

Daily driver/ workhorse: 1994 2500SLT 4x4 Auto. Hewitt EGT, Boost, Trans gauges, Under hood Mech FP gauge, Trident fuel lines, Tork Tek OFV, Mag-Hytec DD Transmission Pan, Ford manual hub conversion, Diamond eye 4" turbo back, 37337 Upgrade. 260K

98 2500slt 4x4 ECLB moldy G56, south bend clutch 3rd gen trac bar , boxed control arms, billet tappet cover w/ dual breathers trident fuel lines, Tork Tek OFV, 4' stainless side dump with muffler 240k
alanack6795 is offline  
post #18 of 24 (permalink) Old 05-20-2019, 04:42 PM
The Uppity 12v Guy
 
dauntless89's Avatar
 
Join Date: Jul 2013
Location: Cedar City, UT
Posts: 7,605
Thanks: 846
Thanked 1,306 Times in 936 Posts
Garage
iTrader Score: 1 reviews
For a max of 350hp you could go with either 5x12s or stock 215s. I'd see what you can get the best price on.

'95 2500 ECLB 4x4, 334k and paused due to epic transformation in progress.
dauntless89 is offline  
post #19 of 24 (permalink) Old 05-20-2019, 05:37 PM
Diesel Freak
 
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 578
Thanks: 19
Thanked 46 Times in 45 Posts
iTrader Score: 0 reviews
The 5x12s will get you a shorter injection window but at that power level it is debatable on any real world affects.

Sent from my LG-H932 using Tapatalk

91.0 D250 A727 w/ 216k on the clock. i/p replaced 20k ago, lift pump 2k, 1 turn fuel, 2 turns smoke, ground & polished AFC pin, timing bump, 366 spring 94 2500 4x4, 49k miles, Farrell Diesel rebuilt 215 pump, PDD 5x12 SAC, SXE 362, built 47RH
hemirunner426 is offline  
post #20 of 24 (permalink) Old 05-20-2019, 06:03 PM
Diesel Head
 
GAmes's Avatar
 
Join Date: Sep 2009
Location: Killeen, TX
Posts: 15,792
Thanks: 148
Thanked 1,699 Times in 1,489 Posts
iTrader Score: 7 reviews
Quote:
Originally Posted by hemirunner426 View Post
The 5x12s will get you a shorter injection window ......
Care to expand on that?

97 3500, 2 WD, G56, slightly bombed, 1.3 million miles. Started the second million on 8/24/13
If you are lucky enough to be in Texas, you are lucky enough.
To view links or images in signatures your post count must be 3 or greater. You currently have 0 posts.
GAmes is offline  
post #21 of 24 (permalink) Old 05-20-2019, 09:26 PM
The Uppity 12v Guy
 
dauntless89's Avatar
 
Join Date: Jul 2013
Location: Cedar City, UT
Posts: 7,605
Thanks: 846
Thanked 1,306 Times in 936 Posts
Garage
iTrader Score: 1 reviews
Relative to smaller nozzles, larger nozzles deliver a given amount of fuel in a shorter duration. While 300hp, maybe 350hp is attainable on stock 160hp injectors, they become enough of a bottleneck that "full rack" with 160hp injectors results in lots of fuel late in the combustion stroke leading to excessive smoke and high EGTs. A 5x12 at, say half rack travel (spitballing here) will make the same power but with much less smoke and lower EGTs. This effect lessens the larger the nozzles get.

'95 2500 ECLB 4x4, 334k and paused due to epic transformation in progress.
dauntless89 is offline  
The Following 2 Users Say Thank You to dauntless89 For This Useful Post:
GAmes (05-21-2019), hemirunner426 (05-20-2019)
post #22 of 24 (permalink) Old 05-20-2019, 10:34 PM
Diesel Head
 
alanack6795's Avatar
 
Join Date: Jun 2013
Location: Rhode Island
Posts: 4,309
Thanks: 102
Thanked 272 Times in 254 Posts
Garage
iTrader Score: 1 reviews
Quote:
Originally Posted by dauntless89 View Post
Relative to smaller nozzles, larger nozzles deliver a given amount of fuel in a shorter duration. While 300hp, maybe 350hp is attainable on stock 160hp injectors, they become enough of a bottleneck that "full rack" with 160hp injectors results in lots of fuel late in the combustion stroke leading to excessive smoke and high EGTs. A 5x12 at, say half rack travel (spitballing here) will make the same power but with much less smoke and lower EGTs. This effect lessens the larger the nozzles get.
So running bigger injectors with a more conservative plate will yeild about the same power with less egts and smoke?

Daily driver/ workhorse: 1994 2500SLT 4x4 Auto. Hewitt EGT, Boost, Trans gauges, Under hood Mech FP gauge, Trident fuel lines, Tork Tek OFV, Mag-Hytec DD Transmission Pan, Ford manual hub conversion, Diamond eye 4" turbo back, 37337 Upgrade. 260K

98 2500slt 4x4 ECLB moldy G56, south bend clutch 3rd gen trac bar , boxed control arms, billet tappet cover w/ dual breathers trident fuel lines, Tork Tek OFV, 4' stainless side dump with muffler 240k
alanack6795 is offline  
post #23 of 24 (permalink) Old 05-20-2019, 11:06 PM
Diesel Freak
 
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 578
Thanks: 19
Thanked 46 Times in 45 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by alanack6795 View Post
So running bigger injectors with a more conservative plate will yeild about the same power with less egts and smoke?
Potentially yes. It's about the injection window being optimal relative to the piston as it comes to TDC. Too small of injector may put the end of the injection window past TDC and there comes your heat and smoke and some other problems, as an example.

Remember the piston doesn't stop traveling in the bore when the injector opens, sprays, and closes.

Sent from my LG-H932 using Tapatalk

91.0 D250 A727 w/ 216k on the clock. i/p replaced 20k ago, lift pump 2k, 1 turn fuel, 2 turns smoke, ground & polished AFC pin, timing bump, 366 spring 94 2500 4x4, 49k miles, Farrell Diesel rebuilt 215 pump, PDD 5x12 SAC, SXE 362, built 47RH
hemirunner426 is offline  
post #24 of 24 (permalink) Old 05-20-2019, 11:06 PM
Diesel Freak
 
Join Date: Oct 2007
Location: Phoenix, AZ
Posts: 578
Thanks: 19
Thanked 46 Times in 45 Posts
iTrader Score: 0 reviews
Quote:
Originally Posted by GAmes View Post
Care to expand on that?
Tony explained it for me.

Sent from my LG-H932 using Tapatalk

91.0 D250 A727 w/ 216k on the clock. i/p replaced 20k ago, lift pump 2k, 1 turn fuel, 2 turns smoke, ground & polished AFC pin, timing bump, 366 spring 94 2500 4x4, 49k miles, Farrell Diesel rebuilt 215 pump, PDD 5x12 SAC, SXE 362, built 47RH
hemirunner426 is offline  
The Following User Says Thank You to hemirunner426 For This Useful Post:
GAmes (05-21-2019)
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
VP44 Diagnostic for everyone. AmT-yd- 98.5-02 Performance Parts Discussion 26 07-27-2016 11:19 AM
Put 2 stroke oil in my fuel?! McKelveyMX 3rd Gen. Performance Parts Discussion 43 08-28-2013 10:26 PM
2002 and newer Chrysler, Dodge Computer DTC Error Codes part 1 Reddevil1 3rd Gen. Powertrain 3 07-25-2012 06:14 PM
Can someone tell me how to fix these codes? cummminsV12 98.5-02 Powertrain 3 09-11-2011 12:04 AM
Joe G's fuel system writeup ykdave 94-98 Engine 2 04-22-2008 09:13 AM

Posting Rules  
You may post new threads
You may 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 On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome