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Old 06-21-2018, 11:31 PM   #1
Rpmextreme
 
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Arrow 07 Sprinter V8 LS 6.2 Conversion Engine Swap

Ok guys I'm new to the sprinter forum but have had my 07 3500 170 for a few years now. I have been thru a lot of repairs and upgrades and at 151k miles it **** the bed. The engine gave a shudder and oil was blowing out everywhere. It appears that one of the pistons either broke or the ring broke and is pumping compression into the crank case.

So instead of beating a dead horse I have decided to do a LS Swap on it. I need reliability and the cost of a new 3.0 is crazy.

Im using a 2013 GM L9H 6.2 and a 6L80E 6 speed automatic.

A little background on myself.
I have a company that specializes in installing LS engines into newer Jeep wranglers. We have a complete system that incorporates the Jeep CANBUS with the GM CANBUS system and makes everything work as designed.

I spent a little time decoding the Sprinter CANBUS system before I pulled the 3.0 out and the messages are very similar to the Jeep stuff I have been using. So I'm pretty confident that I can make everything work as factory.

I have the GM powertrain in the sprinter and am working on some bolt in motor mounts. It fits great and looks right at home under the hood.

I had to use a front sump oil pan because of the design of the crossmember but it fits great and looks like it was made for it.

The trans almost sits in the same spot and will require a bracket to attach to the crossmember and the drive shaft will need a slight modification to work with the GM output.

I will get some pictures loaded up and some details of my progress as this project progresses.





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Old 06-22-2018, 12:39 AM   #2
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

That is one helluva swap. Will you have any issues with gas in the diesel tank? Evaporative emissions?
Do you live in an area where you will not have to find a way through emissions testing?
That thing ought to haul the mail......Twice the horsepower and another gear to boot!
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Old 06-22-2018, 03:53 AM   #3
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

This guy ain't scared
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Old 06-22-2018, 09:23 AM   #4
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

Looks like you're almost done! What ECU does the LS use is it a Bosch? Is your CAN interface bridge device available off the shelf (and/or without software)? And what happens with ESP and ASR, does the engine cut power like the ABS controller will be asking it to?

Last edited by owner; 06-22-2018 at 10:16 AM.
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Old 06-22-2018, 09:29 AM   #5
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

Helluva project!! MB ought to take notice... sure mpg might not be as good, but I bet there'd be one huge demand for a gas-engined Sprinter! (Wow, just to think... no more DEF, DPF....)
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Old 06-22-2018, 10:42 AM   #6
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

Talk about a "delete" wow!

Your right Bob Laps, this guy ain't scared.

But I do wonder as 4wheeldog does about passing emissions testing?
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Old 06-22-2018, 11:59 AM   #7
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

Quote:
Originally Posted by 4wheeldog View Post
That is one helluva swap. Will you have any issues with gas in the diesel tank? Evaporative emissions?
Do you live in an area where you will not have to find a way through emissions testing?
That thing ought to haul the mail......Twice the horsepower and another gear to boot!
Im looking into the fuel tank. I would assume it would be compatible with gasoline but I will find out.
I will have to figure out a way to get a electric fuel pump in the tank and rework a few lines.
They did make a gas powered sprinter, I may look into some of those parts for the fuel tank conversion.

As far as emissions my state does not require it but I plan on running all the factory emissions that came on the 2013 6.2 truck. EVAP, VENT, PURGE, FTP, CATS, O2s etc... I doubt it will ever truly be "legal" in all 50 states mainly because its going from diesel to gas. But I'm doing my best to keep it clean.

Quote:
like you're almost done! What ECU does the LS use is it a Bosch? Is your CAN interface bridge device available off the shelf (and/or without software)? And what happens with ESP and ASR, does the engine cut power like the ABS controller will be asking it to?
The LS uses a GM E38 ECU, I'm not sure who makes it for them. I will leave the sprinter ECU in place for now and it will run into our CAN Module. The sprinter side will still control the security, Starting, AC and maybe a few other things. The CAN module will also attach to the GM side and we can program it to convert messages and turn things on and off.

The ABS controller will stay in place and will still function. At first the ASR-ESP won't function until I can figure out what messages the ABS unit sends the ECU to request reduced throttle and vise versa. Im sure the ABS module is expecting a message in return from the ECU showing the throttle request...... this may take some time but won't stop it from driving. The ABS braking will still operate as designed.

Our CAN interface is something we use here for our Jeep conversions. We write the software code to make everything function the way we want it to.


Quote:
Helluva project!! MB ought to take notice... sure mpg might not be as good, but I bet there'd be one huge demand for a gas-engined Sprinter! (Wow, just to think... no more DEF, DPF....)
Thats what I was thinking. Mine never had DEF but will all the issues the 3.0 had and all the sprinters with blown engines I figured a LS V8 conversion was long over due. Way less maintenance, Cheap engines, Cheap parts and every parts store in America has them in stock, tons of performance options and fuel mileage shouldn't be too far off.

Another thing. The 6L80E transmission is a 6 speed automatic with a very low 1st gear and 2 overdrives. Its a huge step up from the factory NAG1 Mercedes 5 speed. And I will have TAP shift mode and Tow Haul.











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Old 06-22-2018, 12:18 PM   #8
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

Quote:
Originally Posted by Rpmextreme View Post
I will leave the sprinter ECU in place for now and it will run into our CAN Module.
Thats a great idea I hadn't thought of that. Then you can just pass through all the frames from the car, and ignore all but the security messages coming back out from the ECU. And presumably you can convert the GM frames from the LS ECU and feed them into the car as required.

So the hardware you use for this would need at least 3 CAN ports, do you buy an off the shelf board or make your own? I'm asking becasue its hard to find a hobby type board with 2 or more CAN ports. Best I've used before is an Olimexino https://www.olimex.com/Products/Duin...ource-hardware but its only got 1 CAN.

Last edited by owner; 06-22-2018 at 12:21 PM.
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Old 06-22-2018, 12:22 PM   #9
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

So I'm looking for a 2007 and newer gauge cluster from a GAS powered sprinter. Let me know if you know if any.

This way my Tach will read to 7k RPMs

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Old 06-22-2018, 12:25 PM   #10
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Default Re: 07 Sprinter V8 LS 6.2 Conversion

Quote:
Originally Posted by owner View Post
Thats a great idea I hadn't thought of that. Then you can just pass through all the frames from the car, and ignore all but the security messages coming back out from the ECU. And presumably you can convert the GM frames from the LS ECU and feed them into the car as required.

So the hardware you use for this would need at least 3 CAN ports, do you buy an off the shelf board or make your own? I'm asking becasue its hard to find a hobby type board with 2 or more CAN ports. Best I've used before is an Olimexino https://www.olimex.com/Products/Duin...ource-hardware but its only got 1 CAN.
The module I use has 3 can ports. It also has 18 analog inputs, 6 relay outputs and 4 high side drivers. So I can pretty much do anything I want with it.

Last edited by Rpmextreme; 06-22-2018 at 12:27 PM.
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