here is an example!

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waynesworld>
The .63 will give you better top end and the .48 will give you better low-mid range. I would expect the .48 to get you near 300 ft/lb torque at 3200 rpm and the .63 to be in the 4800 rpm range. Driving the .48 is more impressive because it comes in at a lower rpm and will have a stronger pull (Stop light to stop light acceleration will be Excellent). The .63 will not feel as punchy to drive (smoother) but the dyno results will be very impressive.

Additional injectors are the best way to start. I prefer the HKS AIC (First Generation) controller. Keep the box near you so you can tune it easier. With this controller I can tune the flat spots out faster than trying to play with a laptop. You can also play around with the Control Pressure Regulator. I have been trying to figure out a way to send varied resistance to the CPR at different Boost levels. I made a relay control box before but had trouble trying to get it just right. It ran either too rich or too lean.

On another turbo project I used 2 injectors with 2 pressure switches set at different boost levels to switch on each injector.
One at 5 psi and the other at 10 psi.
Cost was less than $100 and it worked great. Simple but effective.

Using Additional Injectors also has a plus it cools the air charge about 10-20 degrees.

wow! Keep up the good work guys. I'll start as soon as you guys are finished

It's been a long while since I last visited. But ROCK ON!!!!! This is what I've really missed. I too have a 91 300E with a M103. Having just done the entire exterior body to a E500, it's now time to lay it down. I was leaning more towards the C36 setup which is the most straightforward, and also maybe a later model M113 engine/ 722.6 trans setup which is a little more involved. But I'm now leaning towards the turbo setup. Thanks Guys!
I will have to read over this entire post thoroughly. I was wondering if a turbo from an 88 Toyota Supra would be of good use? I have one left over with the manifold and piping from an engine swap I did a while back to a friends car. That too was a 3.0 liter. Locating turbo accessories will be of no problem, I have close touch with many salvage yards around my area.
I'm sure that all the guys from my shop will be very excited/helpful when they hear of this plan. Keep it comin'!!

Bill
91 300E
Done Up

let's see pix bill! I am adding E500 fenders and an AMG kit soon too... I need pix cuz I'm repainting the whole car. Don't know what to get...

They said they used a mitsubishi starion turbo. You can probably use the turbo from the supra but not the exhaust manifold.

I will try my hardest to get some pics up. It really sux when you don't have a digi camera. But yeah, my car was tied up for like 3 months. The car was down to the bone and done the way we all dream of. I'm not disapointed that it took so long, because I had a hand in the whole project. It really came out exquisite. I would do it all over again in a heartbeat.
I will gladly relay the list of necessary parts and "mods" required for the conversion. Are you going to flare out the rear fenders? It really wont look right if you don't. Quite expensive too. Without my discount, I believe the PARTS would of totalled around $5k. What year is your car. Mine is a 91 which now looks like a 94, jet black. Boy does it look funny without my 18's on, still trying to get spacers for the monsters.
As for the turbo, I believe the Supra unit would suffice. I know the manifold wouldnot bolt on but its good to have for template/comparison.
The modding will never end!!!

Bill

The supra CT26 turbo will work. Great for 12 psi, about 325HP.

GOOD LUCK.

THANKS Speedtek, that's just what I wanted to hear. NICE!!! Time to dig it out and clean it up. That large turbo will look perfect with the 103. Would a rebuild be good enough or is now the time to send it out to be modified? Any suggestions on where to find a nice kit? Are the 606 diesel turbos any good as well? I just picked up a pair. How would it compare to the CT26? Maybe twin turbos are in order! WOW this would be crazy!
Thanks
Bill

for Twin Turbos I would look for a pair of IHI RHB-52. They put out an easy 185 to 225 HP at 12 PSI, that is PER TURBO. so 370 to 450 Total. expect full boost by 2200 rpm on a 300E and very good torque by 4000 rpm. This set up is easy to do utilizing the stock manifolds.

(ALL FIGURES BASED ON A STOCK '89 M103 MOTOR)

I would check the endplay on that turbo, if it is fine go ahead and install it. get everything running good and find another one to rebuild and modify if youre not satisfied with the output.

Turbonectics got a bunch of tricks for those CT-26 turbos as well as my buddy Rick @ Innovative Turbo. Rick use to work at Turbonetics for years until Bob Keller sold the company. Rick was one of the originals who developed hybrid turbos.

I am currently installing a turbo on my 86 190E 8v. I am shooting for 325 HP on the stock motor. I will be using the car for road racing and will need the power reliable and consistant. I will be using a To4E/T3 hybrid tubro. Hopefully I will get it done soon so maybe we all can have a Mercedes Turbofest?

hey adam and speedtek!
I e-mailed you guys but you didn't reply? i was wondering about the progress of the turbo and if I can buy a exhaust manifold from u

I replied.

can you send it again? i didn't get it =( Thanks for your time.

Here are the pics of the finished turbocharger. Looks brand new!

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Here is another. It took a lot of work to make it look this good, I just hope it works as good as it looks!

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Looks brand new now when are you gonna put that bad ass..

__________________
96' E320