2000 series 60 12.7. I bought a new lightweight #23514177 supposedly what was original when new. Old one was a # 23507442. Same size, everything matches up, a little different on backside, making it a “ lightweight. Original must have been swapped out. Anyone know if there are any benefits, standard vs lightweight, besides weight savings. Also going with 2050 torque 6 pad. Any ideas appreciated
Detroit flywheel
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Rideandrepair, Jul 14, 2019.
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That would be a welcomed improvement
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Just a note, I got flywheel off amazon, for $235.00. That includes optional 2 day shipping. Price was $189, free shipping. Best price I could find, was $289, 171 miles away and $330 near home. Same aftermarket brand. Freightliner wanted $800, not sure what brand, alliance maybe? Detroit Direct, original equip.was $2100. First time I used Amazon.Delivered to the door!! What a deal!!
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I'll tell you one thing about the lighter flywheel. It will be a hell of a lot easier to put in.
Glad to hear you're going to get your repair done.
Be careful with that clutch though. That is one heavy mofo.Bean Jr., Rideandrepair and Intothesunset Thank this. -
Less rotating mass means less momentum going up grade.
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Put a 14 liter dampner on your 12.7 for some extra rotating force.
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I don't think a lighter flywheel in a diesel powered truck is going to make much difference when it comes to momentous torque going up hills.
Matter of fact it should pull better with a lighter flywheel because of the reduction in rotating mass.
In drag racing it's said that removing 25 lbs of rotating mass is the same as reducing the car's weight by 100 lbs or adding 10 hp.
If the engine was spinning 6000 rpm, there might be an advantage to a heavy flywheel, but at 1600 or 1700 rpm, not so much.
Unless you like to like to launch your truck hard, foot on the floor and dump the clutch, a heavy flywheel may improve your 60 ft times by a tenth or two and break many things in the process.
A heavier bob weight, rotating mass, makes an engine more durable, rob's power, but last's longer.Last edited: Jul 15, 2019
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