Mounting a Mercedes V12 Engine, Transmission & Driveshaft in a 500SEC - Project SEC V12 Part 3

Website: xfmotorsports.com/
Instagram: / xfmotorsports
E-mail: [e-mail]
Stefan's Instagram: / project.black.jack

[@xfmotorsports]

What's your fav project on XF Motorsports so far!?

[@Gizawar]

ASL and hopefully F1

[@CORZER0]

ASL!

[@mohamedyasinarakkal5130]

Why didnt you change the oil pump gears

[@mohamedyasinarakkal5130]

More ASL and F1

[@sakurasuper]

f1

[@ryantzer]

It's been well over a year since the last video on this project - when do we get to see what's currently happening with it?

[@davidloja5084]

Thought the same! Wold love to see how did this turned out

[@mexdrago3009]

2 years now.

[@eddieburke5519]

Where's Part 4???

[@Unc_Talks]

I really wish we could get an update! These cars are getting to be more and more popular, and this is a hell of a swap...

[@FuzzySixx]

The SEC is my favorite car ever. I hope we can see it complete!

[@zenjamin6262]

ID LOVE TO SEE THE REST OF THIS BUILD

[@amgonegaming9515]

I think its time to make ur own custom signature plate and place it somewhere on the cars u build; "Built by XF Motorsports", and a new merc line; few print ideas "No Artificials, all Human Intelligence ", "Old schooled, New old cars", " a pic of a wrench or hammer w writing " powered by Stefan" , SL pic w writing " Nose trimmed" 😀

[@zenjamin6262]

I'm so excited to see this build running

[@ravibiswas1527]

Literally seeing you for 3 times in a month makes me so much happy! Keep up the hard work Sir!

[@slvr1.618]

fast becoming my favorite motoring educational channel and great to see the big guy from deboss still working on custom cars

[@davewhite724]

Those hammer-era AMG arches are so amazing. Looking forward to more...love seeing the builds from Africa knowing you're back in Canada doing such amazing work. I can't wait to get my own personal shop here cuz I miss playing with cars so much. Until then I live vicariously through YT

[@amgonegaming9515]

Steph is like the old school CNC Machine, he cuts, welds, hammers, also makes jokes; much better n faster than the machine. 😆

[@mrtickles23]

Hahaha thanks buddy

[@georgobergfell]

such a cool project! I was saying to myself half way through the video when I saw the underside of the car and how well engine and transmission fit: "dude, this looks like it's bone stock, absolutely amazing work!

[@AnthonyEdwardBrowne]

Happy to hear it's getting custom headers and downpipes.

[@JermaineWhitehead7]

I would love to see a vid on retro-fitting an abs system. Keep up the great work! you're a huge inspiration to me. just a guy studying mechanical engineering trying to make fast cars

[@markscully2342]

I'd rather not have ABS if the conditions are bad enough that you need it it probably won't help and the rest of the time it just limits your max braking effort and gives brakes with no 'feel'!

[@douglasharley2440]

*y'all are KILLING IT!* this project is so dope.

[@romeo1951]

can't wait to see this thing moving. Very impressive, i love how almost everything fits like it's supposed to

[@Emangia]

You are doing right Stefan with the welding and the finishing!

[@FixItRyan]

Crazy how nice the trans went in! Great work!

[@PitSmok]

Just amazing, top job! my dream car and a epic build. Sec is a legend and with this setup will be on another level!!! Thanks

[@chadtacular]

Such a cool build. Great work guys!

[@MercedesLover-oz6bu]

Extra hot project lovely work

[@ericbassel4805]

Always wanted to see this model with a V12, and your doing this 1 with a modern V12. Everything looks great, I can wait to see the final product 💯

[@LooseNut099]

Amazing work guys.

[@FixItRyan]

Can't wait to see the wheels turn, I love this channel!

[@rmv8553]

Cool build guys! Cant wait for more vids

[@garyclark3362]

Fantastic work, really enjoy watching your videos👍

[@melp1088]

Looks sick. Great job.

[@rickdunn2041]

Did you finish this build yet?

[@mohammedzaman8977]

Your living your best life ! Top boy mechanic hats off to you great work you do 👍🏾

[@TheKeenMechanic]

Great work as usual💪

[@projectxtv9143]

love this project

[@batemonjones4077]

Great job keep up the fantastic work. I would love to do this to my 2011 E350

[@mohalbeedh]

Hi guys, amazing work can't wait to see this car finish.

[@thomastymrakiewicz7381]

Again awesome job, well done! Greets from Mercedes motherland

[@shahjahan8785]

Excellent work on this old school merc with v12 swap keep up the good work 👍

[@sebastiandasilva4750]

Very nice, it is definetely a very good swap. Congratulations!!

[@mercedesbenz7758]

Good job 👍

[@nargesazizi655]

I just added you guys to my group Best video ever

[@zenjamin6262]

I'd pay money to see the rest of this build

[@anthonyorafferty5632]

Dream project ! Love them AMG wheels 'had them on my 90's SL'.

[@shaunpc2512]

Liked as soon as I saw the video, quite possibly my dream Merc 👌🏻

[@brengapps]

Love this build. Though the existing mounts look shot, new ones (if needed) will be an inch higher, hopefully no hood clearance issues. Looking forward to the next episode

[@tonychavez2083]

It’s brilliant how well it lines up in that old C126 chassis, the boys from Stuttgart would be proud 👌🏼

[@LaNiveladora]

Good work!!

[@zenjamin6262]

Man the wait is killer on this build

[@fkrasnic2890]

Nice work shadout from Crash from Sweden❤️❤️

[@haystackhider7158]

Coolest engine swap Ive ever seen! Wanna see more..

[@IvanovSuperturbodieselProjects]

It's most crazy swap I had ever seen!)

[@Smoothy_boy]

Love these vids. If I ever get an e55 I know where I’m going

[@mercedeskid01]

I love that car 😍

[@zenjamin6262]

Looking forward to the next video !!!

[@avinstallations]

You make great videos

[@crazycowboy213]

You make it look too easy. Waiting for the ecu stage, really wondering how your going to control this engine with a standalone ECU. Rooting for you! Great content as always!

[@shawnhalkowitz7340]

The biturbo swap is my favorite. I have a 89 560sel with a tired 350k mile engine. I always wanted to swap a new v12 into it. My 04 sl600 is fast and smooth and I wish the old 560 had the same power and acceleration. Keep us updated on the progress of this swap your doing. Need to see it done for inspiration

[@WOTTechnologies]

We have done a few shortened BMW drive shafts at our shop. We find it easier to chop the drive shaft where the three finger yoke will go. Then cut just the yoke off, chuck it in the lathe and turn a step in it, so it lightly presses inside the tube. This keeps the yoke perfectly square to the tube, and leaves and easy way to lap weld vs butt joint. Just gotta preheat the yoke for penetration.

[@ozdiaz1048]

Nice job guy's can't wait for it being done and when u drive it plz show us the real speed of this swap. Love it.

[@Mig200z]

love it

[@marscarz]

Great Wideo guys!!

[@LQhristian]

Excellent shop! Great build! BTW, would be great to see in the online store a gated shifter plate for the 350z trans :-)

[@camsac]

Haha he really does look like black jack! Never checked the insta till now, keep doing gods work!

[@rolf9138]

Pretty sure the trans mount body side had different positions for the mount where those rubber plugs were. The w123 was made like this, hard to think the w126 wasn't similar. You'll want to replace the guibos with metal+urethane bushings. If you can't find them dm me. You might also want to consider the kangaroo team cv joints.

[@edh7492]

500sec is about as gangster as it gets 😎

[@12pagani]

And the oil cooler you can use the factory one from a w126 300SDL though custom brackets are needed as the sec has euro bumpers and foglights. The factory splash guard fits perfectly and looks stealth. I did the oil cooler system on my 560sel euro spec.

[@marcusjohnson488]

How do you work out if the engine mounts will be strong enough? With a twin turbo V12, they’d need to be pretty well engineered, yeah?

[@aktik6000]

Wow, nice!

[@denseljosephs9500]

Awesome.

[@slevente00]

How will you solve the cooling for the rearmost cylinders? There wont be much air cooling, some kind of cooling mod maybe? And i hope it will sound badass😎

[@mansouralblooshi3004]

This is going to be a time machine. As an owner of one this car I know they where the kings of their time.

[@AliYes]

Nice one

[@UpsideDownFork]

Just picked this up now. Great project and great work guys. The biggest issue with these M275 engines is cooling and getting heat soaked. That's with the standard turbos, tune etc. You will have your work cut out for you keeping this thing cool even with gentle driving.

[@Nihil1st1347]

So You did not glow the welded drive shaft part after welding to reduce tensions? I had had learned doing so is of importance. I also think on a drive shaft of a V12 should be taken any precaution.

[@sas8403]

any more videos of the project, will you be completing the project, was looking forward to the completion

[@giuseppetanese6467]

What about vibrations? This engine supports looks like quite rigid and I suspect that will translate into a quite shaking and uncomfortable drive. What do you think about creating an shock absorber to connect engine to the chassis?

[@pashakdescilly7517]

If you want to get really flash, you could do some CNC billet alloy engine mounts and a boot lid badge saying 600 SEC.

[@roy1263]

Any updates on this beast project? would be keen to see how it turns out

[@yowein8787]

Did that year have the SLS rear suspension. And aah as of incidences as recent as yesterday...what are you guy doing with the original transmission. I may kind really need one. As jelly as I am about your 12.

[@jaimeserrano5943]

Waiting for part 4.

[@maxgomez4305]

Wowww I really really hope you guys put in one of those $12,000 custom exhaust systems that make that v12 aou d like a super car💪

[@t.w.3]

Love the project. You need some euro-style turn signal lamps for the front, and get the euro silver rear lamps to make it look much more modern without destroying the image.

[@fozpringle1]

Why this channel hasn't hit a million subs is criminal

[@chriscraft3826]

Did I miss Part 4 of the V12 SEC project? Part 3 which I guess was about 1 year ago, seemed close to complete the project. Also the 107 project, and updates there as well? Love your channel, great content..

[@ASh-vo9zo]

Is it last part of the V12 SEC project? Didn't found newer videos. What the status of the project?

[@q8mechanic427]

Subscribed

[@BlagoP]

The flex disc will rip well before the driveshaft twists. There are steel flex discs available.

[@darcyguerinhanlon3916]

Try getting a 300sd radiator. to the top outlet location is the same on an om603 as the v12

[@car-toonnetwork7723]

plz make a update vid we wanna see it drive we are invested

[@lilibethdoherty295]

The M 117 5 liter that was in there just needed some dished forged pistons and a paxton supercharger that fits so nicely on right side of the motor that it looks like it was meant to be there!

[@datka3]

Now that you have transferred multiple engines would you say for 560 sec M156 would be a better option?

[@Russ1367]

Was the prop [drive] shaft straight at the weld? Would have been a good idea to slide a tight fitting tube inside one end, weld it up and then slide the other end over and weld up. That would give the joint some strength.

[@chesspiece81]

The NA 6.3 or the 5.5 with the VRP upgrades is what I would put in a coupe of this vintage and style and the TT V12 in a sedan or newer model S class coupe. But this is still an incredible build, I'm excited to see it finished. With the prices these cars are fetching lately I bet companies will start giving these chassis the Singer/Alfaholics style treatment.

[@axelwulff2303]

Should you find you need a little more cooling, Ron Davis Racing makes an upgraded radiator for the W126 chassis. It's a little bit thicker than the standard Behr radiator so you may have to go with low-profile fans. Strange to see a non-ABS version of the 500 SEC. Good luck with your awesome build.

[@h-a-milli4531]

Sherah where have you gone? Where's the updates on these projects?

[@12pagani]

The transmission fits so good as it's a 722.6 auto and the transmission in the w126 is the 722.3. Its easy sans electrical to swap a 722.6 into a w126 and it bolts up. But impressive that the v12 didn't push it to far forwards or back!!!

[@luukwissink9667]

Did you finish this project? I check this page once in a while and Allways wondering where the car went.

[@arikavlogz4407]

I have one of this awesome cars and was wondering how much such a project will cost me

[@CORZER0]

But is that force on the drive shaft, diff and tires while the car is rolling, or from a complete stop? It would seem that there would be a huge spike in the power curve from the torque applied at a stand-still launch vs from a rolling start.

[@6KHwy]

New sub here, looks phenomenal guys no one has a EFI system for the M113?

[@mohamedyasinarakkal5130]

Why didnt you change the oil pump gears. 14:10 It looks like it came out of the factory

[@RealBadgerScrutiny]

Could you do thIs on a 560 Sec as well?

[@tisoy909]

Hi will you be able to duplicate this swap again? For instance on the engine mount brackets and other modifications that you will find necessary will you make some items available? Very interested.