Engine swap? 1999 SL500 - Page 2 - Mercedes-Benz Forum
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post #11 of 24 (permalink) Old 05-24-2019, 06:01 AM
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Quote:
Originally Posted by mahunt View Post
I think the OP is talking about a 6L V8 AMG M119 engine to replace his 5L V8 M113 and not the 6L regular V12 M120.

Swapping a V12 into a SL500 would be difficult as there are so many specific parts (it's really a different car). But swapping a M119 for a M113 would be a bit easier.
What would entail putting the 6L V8 in my 98 SL500? Is it a possibility without rewiring the car, kinda plug and play? I drove a E63 last weekend and that sucker runs
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post #12 of 24 (permalink) Old 05-24-2019, 02:10 PM
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Quote:
Originally Posted by mahunt View Post
I think the OP is talking about a 6L V8 AMG M119 engine to replace his 5L V8 M113 and not the 6L regular V12 M120.

Swapping a V12 into a SL500 would be difficult as there are so many specific parts (it's really a different car). But swapping a M119 for a M113 would be a bit easier.
All I saw was 6.0 and just assumed... a 119 6.0 is another animal

I'd guess the best SL to swap it into was a year SL that closely matches the engine.

I wonder, on another forum a member was looking at a AMG 6.0 out of a W140 S class, and was for sale in the same neck of the woods. I think he decided against it because of the lack of repair parts needed after a lot of research. I think that one needed a new crank, unubtanium..

Sounds rather tempting though....


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post #13 of 24 (permalink) Old 05-25-2019, 12:48 AM Thread Starter
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Quote:
Originally Posted by mahunt View Post
I think the OP is talking about a 6L V8 AMG M119 engine to replace his 5L V8 M113 and not the 6L regular V12 M120.

Swapping a V12 into a SL500 would be difficult as there are so many specific parts (it's really a different car). But swapping a M119 for a M113 would be a bit easier.
Thank you sir,
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post #14 of 24 (permalink) Old 05-25-2019, 12:51 AM Thread Starter
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Originally Posted by roncallo View Post
What year M119.

You will also need a wiring harness or two or three. What transmission do you plan to use.
Engine is from a 1997 E60 AMG (W210)

Comes with the 5 speed gearbox, diffs, instrument cluster and ECU and harnesses.

Just got word that the engine was booked by a russian dude.
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post #15 of 24 (permalink) Old 05-26-2019, 05:44 PM
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Quote:
Originally Posted by BAHRAINI AMG View Post
Engine is from a 1997 E60 AMG (W210)

Comes with the 5 speed gearbox, diffs, instrument cluster and ECU and harnesses.

Just got word that the engine was booked by a russian dude.
This would be a very difficult task. The electronics of the entire M119/722.6 transmission would need to be installed with harnesses. Would probably be a lot easier if it were a early 90's with 4 speed transmission.

A more practical route would be to sell the SL500 and purchase an SL600 with the M120 V12. While some consider the M120 to be impractical, I believe it would be far more practical that an SL500 with a swapped 6L M119 that was not integrated from the factory.

As far as the reliability of the M120 I have had no issues in 10 years. Granted I have only put about 20K miles on a 40K engine but 10 years is 10 years.

Also if you are of the caliber person to be capable of performing the 6L swap, then maintaining an M120 should be a piece of cake.

As far as performance of the M120 vs M113 some say the are the same from 0 to 60 and that may be true as the SL 600 is carrying ~ 300 extra Lb. But after 60 MPH its game over.
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post #16 of 24 (permalink) Old 05-27-2019, 10:03 AM
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M120, first or preferably second gen is the way to go for anyone having the itch to experience V12 ownership. They are the most reliable V12s, by a mile, more so than some other lesser cylinder count engines.
I personally loathe the older, four speed automatic trans, prefer the next generation five speed that came out 96.
As for the OP’s question, it would be possible, but then again, why?? Sometimes in life you should consider, “just because you can, you probably shouldn’t “
The car you have, only is the same in terms of body, EVERYTHING else is different in terms of engine, harnesses, engine management, etc. compared to the one with an M119.
If you do feel like you want to build an SL with a 6.0,M119, get the engine first. The generation of that will determine what year car you can drop that into. ‘90-‘92, ‘93-‘95, or ‘96-‘98.
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post #17 of 24 (permalink) Old 05-29-2019, 02:07 AM Thread Starter
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Just wanted to install an AMG block in the car.

Question, are there any differences in the M113 5.5 liter engines that went into these cars back in 1999 and 2000?
I mean, is it just the engine plenum that's different.

R129 SL55 engine is the same as the one that went into the W208 CLK55 and W210 E55 ones?

Here's the engine from the SL55 AMG



And here's the engine from a CLK55 AMG

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post #18 of 24 (permalink) Old 05-30-2019, 05:07 AM
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Quote:
Originally Posted by BAHRAINI AMG View Post
Just wanted to install an AMG block in the car.

Question, are there any differences in the M113 5.5 liter engines that went into these cars back in 1999 and 2000?
I mean, is it just the engine plenum that's different.

R129 SL55 engine is the same as the one that went into the W208 CLK55 and W210 E55 ones?
Hi Ahmed.
Dependant of the chassis, the engines are different in details.
I have put some information to that into the german wiki:
https://de.wikipedia.org/wiki/Mercedes-Benz_M_113
Since MB has not documented the 113.985 in EPC, the differences in detail can only be guessed.

Cheers, Frank

(PS: The SL 55 has also a different transmission program and rear diff.)

Last edited by Frank_S500; 05-30-2019 at 05:36 AM.
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post #19 of 24 (permalink) Old 06-01-2019, 11:12 AM
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It's going to fit and all. You'll have no issues putting it in. The difference is the size of the cylinders and the supercharger, that's all besides the obvious..

Quote:
Originally Posted by BAHRAINI AMG View Post
Just wanted to install an AMG block in the car.

Question, are there any differences in the M113 5.5 liter engines that went into these cars back in 1999 and 2000?
I mean, is it just the engine plenum that's different.

R129 SL55 engine is the same as the one that went into the W208 CLK55 and W210 E55 ones?

Here's the engine from the SL55 AMG



And here's the engine from a CLK55 AMG

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post #20 of 24 (permalink) Old 06-01-2019, 12:19 PM
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I say, if you have the means and talent to pull this off, go for it!

You can figure out the details as you go, as long as there is no artificial deadline, and your commitment is 100%.

It aint gonna be easy, and there will be failures (learning moments) along the way.

I believe member Roncallo has commented on this thread. If I am not remembering correctly, he shoe-horned a M120 into a R107, and included the transmission, redesigned suspension, diff carrier, speed sensor mounts, the entire works!

If you are not familiar with his project, navigate to the 107 forum and google "Samson", or contact Roncallo directly.

Good Luck!

Best Regards...

RM Smith
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Where is it again that we are going... And why are we in a handbasket?
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