Inside 650HP 12v Cummins After 350k Miles
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Published 2022-02-17
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All Comments (21)
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I have always wondered how much wear engine has when modified. Now I know. Thank you for sharing this and being honest without hiding or exaggerating details.
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Rod bearings usually always the first to go. I am actually surprised at that much cam wear, but that is a lot of miles. I think 400rwhp single and 600rwhp twin is a good reliable nice driving power level for 12valves.
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(Machine shop guy here) something to keep in mind, all of those welds can & will cause weak points in your parts, the factory Crankshaft is heat treated & hardened. It is already very brittle, I have had it in other engines where the crank will actually split (yes like a log) after being welded, or heated in an extreme manner. Not bashing you, if it works it works, just something to keep in mind!
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Wow awesome break down of the internals. Thanks for posting!
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Great to see you back doing videos Will.
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Great video! Keep them coming!
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Thank you for showing us your combo. This is exactly what I was looking for. I'll be in touch this spring for sure
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Excellent video man. Much love from Alberta! 🤠
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Very cool to know that I could go higher in performance (frankly, 99% of the time I'd still run it as conservatively as I would with a bone stock 12V) with no real component degradation. This is a prime example of good old American hot rodding - squeezing the most hp out of an engine without breaking the bank. Subscribed, looking forward to seeing more.
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Great video guys!
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Sweet video as always
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Great to see and hear the engine performed great for that mileage at that power level. I have a '98 12v with Industrial Injection towing compounds that have been on there with supporting mods for around 100k as well. I do everything with it from daily driving it to work everyday to hauling a horse trailer. It really is a proven and reliable setup that works flawlessly. You couldn't ask for better driveability and spool up and G56 I have in it also works great with the 12v. A lot of what it takes to "get things to last" is all in how you drive it. If you drive it like a hot rod every single day, then don't expect super longevity if that's what you're after. There is definitely a time and place for it but I don't beat on it every single day when I'm driving it to and from work. Using quality oil and keeping up with oil changes is another high factor of course.
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Great show guys 👌
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I've been wanting to get into a diesel truck/cummins as my 2nd vehicle just to dick around with and have fun. I'm a gas engine tech for 5 years and it's kinda spooked me the difference from a gas engine to an older style 12v cummins. However, I've been learning a lot from your channel and it's been awesome, and I'm feeling a lot more comfortable. I'm hoping to take the leap come spring time and pickup a "beatup" ram for sub $6k. Love the content and I look forward to watching more of it!
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Great explanation! Thank you
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Another great video
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Truly tough engines! Good and interesting video.
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Glad you made this video, I was already planning on building a project vehicle with a 12 valve Cummins, and this confirms the strength and durability of this engine 😁👍🏻
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Thanks for this info
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You guys have an awesome job. I'm jealous.