Cummins 6CTA8.3 Injection Timing

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I know several shops that use a cam degree wheel bolted to the balancer. then no need to measure the balancer just bolt the wheel on and make a pointer. degrees position doesn't change by diameter when your going off the face instead of the side of the balancer
 

CARMAN

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Just read 15 pages and whaaat? The suspense was killing me! I have a large Cummins only shop down the street. Maybe I will stop in and ask about the turning up on the 8.3 and see what they say since I am now full of knowledge. Just no guts to try it on my own.
 

74M35A2

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There is another path to doing it. The injection pump timing can also be adjusted inside the pump by a calibration shop with a pump flow bench. You can pull the pump, and send it to a pump shop. Tell them it is currently timed at 8 degrees, and you want it timed at 16 degrees instead. They will make the change to the pump. Then you just install the pump using the 2 plastic push-in timing pins, already on the pump and engine. I think I was quoted $100 to have this done. Gravy.

Sorry I stopped on it. I’m changing engines instead of modifying my stock one.
 
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CARMAN

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Yes had seen that idea in the thread. Still got to get that brake drum thing worked out. Just been working on cosmetic stuff. Then performance next. Picked up some extras up in PA this week. I had seen someone in the thread ask about exhaust delete. Any issue with just replacing muffler with a straight pipe? Don’t really need the back pressure for down shift. I’m sure it will sound good like my 2500 Ram.
 

grendel

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What's all the boo-hah-hah about now? There are many trucks out there with 16+ degrees of timing... there are many ways to get it done. I love mine, but did way more than just timing.
 

mreuss222

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i have 4 inch to 5 inch under the cab with no muffler.
i also have a 2016 ram full delete no muffler. the dodge is not loud at all. the 5 ton is about at my limits for sound..
I cut open my stock muffler and cut the crap out of it and welded it back up. sounded good and egts dropped a bit. egts drop even more with straight pipe.
i would gut the stock muffler. or buy my old one ! I may put a resonator on the straight pipe to help with the drone.



Yes had seen that idea in the thread. Still got to get that brake drum thing worked out. Just been working on cosmetic stuff. Then performance next. Picked up some extras up in PA this week. I had seen someone in the thread ask about exhaust delete. Any issue with just replacing muffler with a straight pipe? Don’t really need the back pressure for down shift. I’m sure it will sound good like my 2500 Ram.
 
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