I would think switching out injectors and fuel pumps would be relatively easy since you could probably just go with amg stuff. and Mo_Bandy, arent warlboro fuel pumps universal?

 

Guys, why would you even bother with the AMG stuff?? Priced to buggery and no different to aftermarket quality pumps/injectors.

As perviously mentioned, the critical thing here is to get the timing/fuel and air intake temps right. Bigger Bosch injectors, higher flow, boost referenced fuel pumps and regulators and intercooler (maybe, depending on boost level) as well as an aftermarket management system ECU would be the go here, so that the combo culd be accurately dialled in.

The bottom end should handle decent boost. A lot of engines we have in Oz ahve been boosted to the max and have not had any issues.To drop static comp, pistons can be fly cut lightly and combution chambers in heads can be milled/layed back slightly to reduce chamber vol, thereby reducing compression also.

Having built a few blown combos, the Merc V6 should'nt be a bad candidate.....cam timing might play a major part here...u dont wont the boost to be blown out the exhaust. A decent set of headers/exhaust should also be required to scavenge the cylinders properly.

It must be stressed that the whole combo be intergrated to work properly together ie: header and exh diameter, injector flow rates, intake temps, static compression, retarded timing /fuel pressure raised as boost increases etc.... not impossible but not a cheap exercise for a daily driver.

I cant see why 350 HP + cannot be achieved. Bear in mind that driveline integrity might be challenged with such an increase in TQ and HP.

I think that in time...some more affordable supercharger setups will become available for our beloved Crossfires.

XFYRED

 

The Kleeman Super Charger is a bolt on application, I think they run 7 psi. So jsut worry about an intercooler and programming, so with that logic you dont need to worry about anyting else.

 

Yes the Walbro pumps are universal.

I agree in my Vette project I am lucky to be able to program the ECM and handle the fuel issues.

It's good to know they can handle the boost, I'm hitting 10 pounds with the Vette. I'm running 10.5 :1 compression as well which isabout the limit to what I wnt to take it. Rather than an intercooler i'm running water / Alcky injection with very little issues of spark knock. I haven't data logged my crossfire yet, It finally has enough miles on it that it is finally just broke in...

I have no where close to what 9- 10 thousand dollars in a supercharging system. Isn't that what they are charging? I think it to be a touch exorbitant price wise... my personal opinion.

Mo

 

Hey Mo for what its worth...I agree as to the price being over the top. But hey, they have to factor in warranty, labour, overheads AND margin on the job to make it worthwhile.

XFYRED

 

all supercharger companies do, but you can get a vortech for about half the price. Thats the purpose of Tsax's idea, to find a more affordable way to go about doing this thing.

 

XFYRED,

True I mean people have to pay bills but I generally do all my working including installing the supercharger on my Vette, and dealing with the ancilary things that come along with it.

I can get a Vette kit from Vortech for about $5600 dollars. I can't see how they justify literally 300% the price for a supercharger...

Sure I understand they warranty it as well, there are companoies that install Vette systems as well but They aren't near that cost. ~puts away soapbox~

X'ed that was basically the point I was making, if someone doesn't want to get scared knuckles by all means pay them the money, but if I choose to do my own work and take the liability if I blow it up, and they warranty the supercharger only like Vortech and others , then give us that option...

It kind of is up there with "chipping" the ECM's but I won't even go there either...

Sorry guy's I like doing my own work... But I see no reasoning to totally breaking a persons bank because they think it is a good business practice. I'll keep the fun to my Vette, and tootling with the crossfire...

Mo

 

OK! Here is the straight poop! The Tech manager at Kleemans syas that the AMG supercharger made for the MB will fit the Xfire but at a huge expense as the boost is 15lbs. so the ECU, wiring harness and internals of the Xfire engine need replacing: crank, connecting rods, pistons etc. However, he made it very clear that the Kleemans supercharger is a bolt on with zero internal engine modifications and only 7lbs. boost, uses the existing wiring harness and ECU. (330 hp.) Apparently their intercooler is also 40% more efficient than the AMG unit.
He said it is a common misconception that one needs a standalone ECU to properly tune a modified vehicle. KLEEMANN uses a mechanical increase in fuel pressure referenced by boost pressure to handle fueling. As boost is created, the fuel pressure will rise in a linear fashion. By increasing fuel pressure, more fuel will flow through the injectors and the injectors are able to keep the identical duty cycle and on-time as a stock vehicle. He said the ECU is a Bosch unit, using proprietary Mercedes-Benz coding and it will automatically adjust timing, fuel, etc. based on these inputs.
If your thinking seriously about the SC , I would talk to Cory at www.kleemannusa.com He seems to know what he's talking about and has given me a lot more information than I posted here.

 

Bob, Cory is correct. To bring stock 3.2L to AMG specs, including all supporting parts and components, will easily run over $20,000 in parts in labor.

Other option is to find a wrecked C32 or SLK32 and swap out everything from it. However, once installed you will need to find someone to code DME to your wiring harness.

Over the last several years, we have installed a number of Kleemann kompressors on V6 and V8 MBs and they work well. Power gains and TQ gains are definetely worth the cost.

 

THese engines are indeed supercharger friendly as long as you can control timing and fuel they run completely awesomely. I have had a ride in a c320 that was converted to supercharged system and all I can say is wow

 

How about changing the camshaft and differential? Startech emailed me before as I was inquiring about their mods that changing the camshaft and differential can raise the HP by 47. Just my thoughts.

 

Camshafts do help in making power the gain maybe around 20ish hp however differentials do not make power

 

Eurorev is right, the differential is part of the power train with which you lose power through, not gain. Maybe they meant something else. Why not post the e-mail so we can see what they meant.

 

I think they meant Lower gears in rear.

 

Dan: It's possible they meant the rear end but certainly not in the context of gaining any of the 47 hp as it doesn't gain any hp at all. Could change the et at the track though.
I remember seeing one of the guys changing the rear end gears to 3.69's. On the standard transmission, I am curious if you would gain much in the 1/4 mile, as the 1st gear shift to 2nd would have to be almost emmidiate and you would need an extra shift as it would redline at mid to upper 90 mphs in 4th at 6000 rpm, hence a need for 5th gear and the time to shift. The standard gears red line in 4th at about 110 mph, so higher number gears might get you a little in the bottom end but I think you would loose it with a necessary top end shift.
By the way, I am using the gear ratios listed on HTTP's photo gallery chart as they seem to be pretty close to what my Xfire does.
Anyways, I would still like to see the e-mail Cryil is describing as it would probably answer the questions.

 

I'm really very sorry that I lost that email after I quit subscribing from mac.com but you can inquire with them on how you can upgrade your HP.

 

Thanks Cyril, I'll see if I can get anything from them.

 

The SRT-6 has different gears in rear,as well as lighter wheels ! Even AMG Benzs have gear changes ,all this to get that 1-2 seconds off 0-60 times or 1/4 mile ! Of course that's at a floored GAS pedal !

 

You also have to be careful that you dont do to crazy gear change as the esp will be affected