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Did a DOD delete on a 16 l83. Put non DOD Lifters in and and turned off DOD and all the codes for it. But I have a slight miss on DOD cylinders at idle mostly. This is a Warranty company paid for job so we just put Lifters in. No plugs in the valley or cam just Lifters. Any ideas?
Yeah, this is an easy answer
You did it wrong. You can't just toss lifters in it because the cam lobes on the DoD cylinders are slightly different and you must replace the camshaft to prevent the misfire problem you just created.
Make sure to swap the trays with non-dod trays as the lifters will also not sit correctly during operation if you use the stock DOD trays. Did you check lifter preload? No discrepancies in length?Quote:
Originally Posted by Scottyb6.0
Stupid question but what does cam lobe have to do with DOD Lifters and non DOD Lifters? Technically if I put DOD Lifters back in the DOD cylinders and turn DOD off it should run without issues.Quote:
Originally Posted by 5FDP
Definitely changed the trays. Nope same length and preload was good.Quote:
Originally Posted by Guy With A Chevy
Cam lobes are different between DOD and NonDOD cylinders to take into account the differences in lifter design.Quote:
Originally Posted by Scottyb6.0
Yes you can tune out dod w/o replacing the counterparts. There is enough difference in the design that the computer even knew you did it differently. I learned this the hard way as well, be enlightened.Quote:
Originally Posted by Scottyb6.0
The lobes of the DOD cylinders on a DOD cam are not machined like the other cylinders. When you get it out measure them. I did this 2 years ago and cant quite remember the difference maybe .015? That same cam was worn to hell. I think they make the same stock non dod cams for most of the dod'd
The difference was on the base circle
The first 3 minutes of this video describes what is different on the DOD cylinder's cam lobes.
https://www.youtube.com/watch?v=mEcZzM50Qa4
I like Powell Machine. Sent some customer's his way. Hard to find a good machine shop.
You can really go down a rabbit hole on his YouTube channel.Quote:
Originally Posted by GHuggins
I'm probably not following :D I've seen a few of his vids, but only half a dozen maybe, maybe more :) . It is hard to stop watching one once you start if that's what you meant? I like how he checks and goes into detail on things.Quote:
Originally Posted by 2xLS1