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12c to 650 conversion

27K views 32 replies 16 participants last post by  Bikeracer1098  
#1 ·
#21 ·
Here you go, still a few adjustments but I'm happy with how its turned out, such a big difference between the 12c and 650 front end.
 

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#24 ·
wow awesome job. Did you do this work yourself or shop do most of it?

If you did any of the work yourself or have the details would love to know which parts were needed to make it all work? Time / difficulty / labor / cost involved?

e.g. some specific points of interest: how did you wire / mount the headlights? Does the original hood work or is a 650 hood needed as well. Other than the obvious bumper and fenders, what is the extent of internals needed, coding, or other unknowns.

Also is everything reversible back to original if desired?
 
#25 ·
The conversions look awesome!

I don't get over here much. I have a 2014. So this question has probably already been answered. Can you swap turning vanes?

I just put 650s wheels on my 12c. Funny story, shortly after I bought my car new I stumbled upon this message board. It was on this message board that I saw someone refer to a particular 12c wheel as "the penis rims". I remember thinking which wheel looks like that? oooohhhh crap. So thanks to whoever that was for giving me a reason to swap the rims!
 
#26 ·
I think the penis wheels are actually the best ones for the 12C and 650S :D

As far as the turning vanes go, I'm sure you could swap them but I'm not sure how well it would work from a performance perspective. A while back someone here posted up a detailed explanation of the aerodynamic forces at work in the side vents and it's pretty complex. The reason they're called turning vanes is because they basically turn the air in toward the radiator. On the 12C the radiators are mounted parallel to the sides of the car so the turning vane is needed to redirect the air to hit the radiators head on. On the 650S the radiators are mounted at an angle facing more toward the front of the car, so the side vent is shaped much differently in order to focus the air in the right direction for proper cooling. I think that if you had the 650S side vents with the 12C radiators you probably wouldn't get the right amount of airflow to the radiators which is not a good thing.
 
#27 ·
Robin,
Thanks for your response. If you don't have your own set of penis rims I have a set you could get for a fair price! hahaha

I did see the post about vanes and airflow to the radiators. It reminded me of why I could never been an engineer. I'm probably naive but I kinda got the impression that unless you are really pushing the car at high ambient temps it doesn't seem like it would make too much of a difference. I could be completely wrong.
 
#29 ·
I'm rolling on penises right now so I'm all set on that front, thanks! :D I'm with you on the engineering stuff as well.. That's one reason I'm not a fan of aftermarket body kits that supposedly add more downforce or whatever. I'm just not sure they have the same resources that a big manufacturer has, so can we really be certain that the ironing board rear wing and bigger front bumper are helping? It's pretty fascinating how the aero works on the turning vanes, but you're right that it probably wouldn't make too much difference unless you drive around at 200mph all day.

ZombiePhysicist said:
Don't forget the mcallen 625C!! It is basically a 650 front end with the 12C engine and rest of body. I think it's side intakes might have still been 12C, I think?
Whoa... I always thought the 625C was just a detuned 650S. Never realized it still had the 12C side intakes, which I like 1000000000x better than the ones on the 650S. This looks fantastic!

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