The V12 is a whole different machine, and its true that they are not for the faint of heart. Everything, from the suspension to the gearbox was reworked for these awesome machines.


Yes, they may be expensive (a rebuild for the M120 V12 at my indy mech. would cost over 3 grand, and that sensor for the ADS that comes standard on the V12 models may cost over 500 bucks), but I would get another one in a heart beat. That growl, that pull, and those insanely beautiful V12 badges make it simply irresistable!

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.

$3k won't rebuild an M120, $3k might be enough to pay someone to take it apart. Add a zero....

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Hattie, a MB M120 crate motor from the fatherland is around $26k.....



I was bored and at the dealer, and they pulled that out of the computer.

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-Justin

91 560 SEC AMG - other dogs dd
01 Honda S2000 - dogs dd
07 MB ML320 CDI - dd
16 Lexus IS250 - wifes dd

it's automatic.

Yep so $30k to have it installed. If a crate motor is $26k, a long block is probably what? $18k-$20k? Figure a good rebuild is probably 70% of that.

The reason I am saying this is because a proper rebuild on a 617 runs about $3k if you watch your money, and thats just a little 5cy diesel. A set of cam's for the M120 must be like $2k.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

I have no experience with the v12 but I would say this....it is just two sixes on one crank. The problem once isolated to one bank should respond to all methods that would solve a problem with a six.

One thing I am sure of.... I would not have pulled heads to solve this problem. (easy to say now, right?)

Glad Herb got it fixed.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.