biturbine

Anyone making them with proven results.... would like to see what these monsters will make holding 16-17PSI with a bumped redline.

I don't think the manifolds are the big issue here, these turbos just cant supply enough air.

1995E320Cab

.

http://speedriven.com/ has what you crave

FormulaZR

In addition to that, you should do some reading on what Speedriven has posted here. They have kept the community fairly well informed on their developments.

You'd be surprised just how much of a restriction those manifolds actually are.

biturbine

all we need to do is get some turbos that can hold decent boost to a bumped up redline and these babies will run with the newer exotics, dont believe you need to spend 15k to do this, we have enough injector, we have upgraded ecus for fuel and redline, all we need is the turbos, hopefully someone can do just a wheel upgrade, this should cost no more than 1k per side from a respected turbo shop, 1-2k for the ecu and maybe some extra cooling for extended runs at 16-17psi.

onelightmind

Marcin at Speeddriven has supplied me with my ECU and TCU with great results. I will build an sl65 with his upgrades someday. Great guy and I trust him. Call him to talk if you have questions he is a wizzard with the V12 TT platforms.

biturbine

why doesn't speeddriven chime in here? There is certainly a market for a turbo upgrade since these cars are very upgradeable.....

onelightmind

From what I remember he upgraded someones sl to use bigger turbos but since the stockers are part of the manifold he had to make new ones and put an oil sump with remote pumps...so the ol swap the turbo easily wasnt so easy. To solve this problem he redesigned the turbine and machined the turbine housings to "flow more than the black series turbos" I was planning on doing the upgrade but decided to wait and get an SL or a newer cl or s. The new body style has yet to set in for me. I can say however that I would probably purchase an s just because the CL and S look so darn similar... 2 free doors and seats. The old CL lowered and on 20's still hits a sweet spot for me.

FormulaZR

Speedriven chimes in quite frequently in the S/SL/CL AMG forums...

biturbine

bigger wheels on the turbine side should certainly help.... let's hope speedriven or someone who has done some work on these turbos can comment....

Speedriven1

Actually you barely have enough injector for a bigger turbo. Your car with a tune should be right around the 15psi range with just a tune. A compressor wheel upgrade gets you up to more along the line of about 20psi but other problems start to surface if boost is pushed beyond that. Turbine wheel is done by kkk (now borg warner) and they have a NDA with benz so you can't get a new shaft, wheel, or even seals for that matter. So everything becomes custom. Custom means big $$. And keep in mind that even when I go to a machine shop or a turbo shop when they see the benz logo I get hit with the benz tax before the part even gets made.

Question that you really need to ask yourself is how much are you willing to pay for labor to pull your motor and have a compressor wheel swap done for about 40-50whp?

biturbine

Assuming the tune is done, is there any other sensible way to make an additional 40-50hp without going to nitrous and doing all that turbo work pulling motor etc?

1995E320Cab

Ditch the cats if you can and run 3" pipes all the way back, that should get you there.

But if you want to keep all of the added power you GOT TO DO COOLING MODS.

biturbine

like your setup. did not know straight pipes were good for all that power, turbo must absorb a lot of the niose, how is the sound quality and tone?

FormulaZR

You could see increased horsepower from water meth injection and intercooler/HE upgrades.


What is your goal and budget?

biturbine

Hmmm, used to have meth on my vr4 worked out ok, really dont wanna risk this v12 though even though there are some smart people out there that can tune it properly. though interested to know what intercooler/HE gives power gains, i would say a budget of 5k....

FormulaZR

Does $5k include ECU/TCU tune, or is that already done?

biturbine

Apart from ECU Tune

FormulaZR

And what is your goal? 1/4 mile, big dyno numbers, 1-mile/top speed, or something else?

biturbine

~11@125-126mph

V12Godspeed

For that trap speed you might get there with a tune, Speedriven IC's, Scorpion intakes and a trunk reservoir. I again emphasize...you might. In terms of ET's it should net you probably an 11.3 if you hook hard on race gas.

Benz-O-Rama

Stephen is running that right now, tune only w/DRs

I'm running basement 11s, tune only...on DRs

1995E320Cab

I was wondering if you would see this

I'm sure you will be in the 10's soon, just get your intake set up installed and pick the right day

biturbine

Awesome numbers guys.... although the Sl600 might trap a couple of mph higher than my s600 with just a tune, i mean after all it is ~300lbs lighter or so.

biturbine

I will do intercoolers of some form or another.

Does anyone know what a full exhaust will yield, I am sure there is some HP hiding there....

V12Godspeed

JayCL600 did a full 3 inch with high flow cats, if I recall it netted him somewhere in the 30-40rwhp range. Not to mention a lighter exhaust. I have 2 stock IC cores for sale cheap if you want to go a la quad (brabus)