Replying to Thread:

12.7 to 14.0

Created On Friday 1, December, 2017 9:55 PM by comealong

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[q]When I get done it will NOT be an egr motor ... I want the bigger displacement and more torque I'm still curious ... Will my 12.7 head fit on the 14litre block ? I want to run my 2 electronics on it ? Maybe change injectors and harness ?[/q]

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comealong

Posts: 6
Joined: Apr 2014

Friday December 01, 2017 21:55

Hello fellas , I need some enlightening?... How hard is it to swap and 14 litre into a 92 peterbilt ?basically I'm wondering about electronics ... The swapping the motor in is no problem ... But can I run my DDEC 2 12.7 ECM on the 14 ? Can I swap the engine harness from 12.7 onto the 14 litre ? Would I need to run old style injectors ? Can someone please set my wondering about to rest....

-------------------------
92 379 Pete 12.7 Detroit,OO14613,3.90s,hay sleigh..

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benjamin2606

Posts: 49
Joined: Apr 2014

Saturday December 02, 2017 06:54
Which 14L is it? DDEC 4, 5, or 6? ------------------------- 2000 Western Star 4964 14L 550 S60 2003 Western Star 4900EX 12.7 500 S60

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comealong

Posts: 6
Joined: Apr 2014

Saturday December 02, 2017 12:10
DDEC 5 ------------------------- 92 379 Pete 12.7 Detroit,OO14613,3.90s,hay sleigh..

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benjamin2606

Posts: 49
Joined: Apr 2014

Saturday December 02, 2017 13:59

A few years ago Pittsburgh Power put a DDEC IV 14L into a DDEC V truck and it supposedly took them 2 weeks to get the wiring figured out. I'm guessing putting a V into a II is going to be at least as much fun. There's a company in Coos Bay, Oregon called Kustom Truck (kustomtruck.com) that specializes in wiring harnesses for gliders and engine conversions. They might have a kit or at least the answers you're looking for. I am curious though, why do you want to put an EGR engine into a pre-emissions truck?

-------------------------
2000 Western Star 4964 14L 550 S60
2003 Western Star 4900EX 12.7 500 S60

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comealong

Posts: 6
Joined: Apr 2014

Saturday December 02, 2017 21:11
When I get done it will NOT be an egr motor ... I want the bigger displacement and more torque I'm still curious ... Will my 12.7 head fit on the 14litre block ? I want to run my 2 electronics on it ? Maybe change injectors and harness ? ------------------------- 92 379 Pete 12.7 Detroit,OO14613,3.90s,hay sleigh..

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benjamin2606

Posts: 49
Joined: Apr 2014

Sunday December 03, 2017 22:15

I think it will bolt on to the 14L block but the 14L has that compact gear train and I'm pretty sure the cam/cam gear are 1 piece so you may run into issues with the DDEC V cam in the DDEC IV head...or it may just fit right in. One thing to keep in mind though, once that DDEC V block goes into that truck, as of December 18th, it requires Elogs in the US.

-------------------------
2000 Western Star 4964 14L 550 S60
2003 Western Star 4900EX 12.7 500 S60

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