4th Gen High Performance and Accessories 2010 and Up Talk about Dodge/Cummins aftermarket products for fourth generation trucks here. Can include high-performance mods, or general accessories.

Who has blown a head gasket?

Old 06-22-2012, 09:19 AM
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Every truck I see with a tuner has had a blown head gasket. One had a cracked block from being overheated several times.
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Old 06-22-2012, 12:49 PM
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Originally Posted by SpeedyWS6 View Post
Every truck I see with a tuner has had a blown head gasket. One had a cracked block from being overheated several times.
That is a very broad statement. I run a Smarty JR ME tuner on mine and have had it on for 50,000 miles. So far so good. Keep it on Towing tune.
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Old 06-22-2012, 04:18 PM
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Originally Posted by ranchertx View Post
That is a very broad statement. I run a Smarty JR ME tuner on mine and have had it on for 50,000 miles. So far so good. Keep it on Towing tune.
I know it sounds that way, but I have yet to have a modified 6.7 with less than 50k miles come in the door of my shop without a blown head gasket. Well except for my personal truck that got head studs a week after the smarty went on. I don't think I have had a smarty jr truck through my door either though. Every single one I can remember had h&s tuning.
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Old 06-22-2012, 07:28 PM
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I know my truck is not a 4 gen but I have run well over 100,000 miles on SW 3 on my Smarty SR. I do monitor my gauges. I tow with that power as well.

I guess I am lucky by what I am reading. However, I think it might depend on how you are using that power as well.
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Old 06-26-2012, 08:20 PM
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Mines over 50k, its been tweaked since day one. Its a bone stock engine, and been run on mild/hot most of the time. So much for that rumor of a story.

Most of that mileage, I've been towing trailers and use mine for work daily, so its not a garage queen. I also run 33in tires on 3.73 gears on a RFE68 transmission. The truck driveline hasn't be serviced either.
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