AMGSC

I really want to increase the displacement AND add more boost but I also really need to know if it's even possible. Otherwise it's not worth spending $30-40K on. Will boring it out invade the water jackets or come dangerously close before resleeving is done. I know Brabus currently offers a 6.1 NA 55 car but the warranty will be voided if forced induction is added.

I would prefer to sticking with German parts (Koblenschmidt Pistons) if quality are equal but I'm getting quotes primarily for CP Pistons. I don't really want cheap American Muscle Car parts.

I definitely want the engine to last at least as long as OEM and function as my daily driver if needed.

BlownV8

I would not bore the engine out if you are trying to greatly increase HP. You could always do a custom stroker crank, rods and pistons. It would be best to increase displacement by sleeving the engine. Sleeving the engine will allow you to use any forged pistons. However, if you stay with the Alusil bores, I'd go with forged Mahle or kolbenschmidt pistons.

Just because the parts are made in the US doesn't mean they are crap. There are plenty of great piston manufacturers in the US. Most do not deal with Alusil engines so they don't know how to make a compatable piston. Sleeving will allow you to run a much less expensive piston and will allow you to larger engine bore for more displacement.

For the power you want, $30,000 would be a good estimate but may run even more. There are some great engine builders and tuners that could get you to the 1,000 hp level but you could spend $75,000 to make it happen. Check with Heffner or Underground Racing to see what they could do for you and the cost.

AMGSC

Transformation project commenced!

blackbenzz

Nice! I will be watching carefully. What do you have planned?

AMGSC

VRP will NOT bore it out. Too much work for too little gain. Otherwise, everything in my sig will be done plus more if needed.

blackbenzz

Cool. So you still want to add turbos with the sc? I dont think thats a good idea but good luck. What do you plan on doing about tuning/fueling? Instead of buying a Maybach trans I would get your current one built. I've never even hear dof a CF crankshaft, I believe they are forged from the factory but am not sure.

AMGSC

We'll try it but if it's too much of a restriction then the Kleemann is up for sale. VRP will tune it and the fueling may be handled by the larger injectors I still have in the garage. I also have a spare brand new Kleemann fuel boost kit if/when I sell the SC. The CF Shaft is an Evosport development but it's not launched yet.

blackbenzz

VRP will try to tune it through stock ECU? That is a BIG undertaking. With the power levels you want I would think stand alone engine management is your only option. You are going to need big injectors and maybe a bigger fuel pump too. Oh, that is a cf driveshaft not a crankshaft

AMGSC

How much did it cost you to rebuild your tranny? What did you do? How many rwhp and rwtq can it withstand? I'm paying $5200 for Maybach Guard Specs but is it worth it?

c32AMG-DTM

Since VRP is doing your engine build... don't they have a "bullet[proof] tranny" build option for the 55K and V12TT cars? Is the Maybach tranny less expensive (i.e. is that why you're going that route)?

EDIT: price is a wash, read this thread if you haven't already:

https://mbworld.org/forums/w211-amg/...let-trans.html

Unless you're excited about saying "my car has a Maybach transmission" - I can't imagine it's better spec'd vs. what VRP's tranny builder can do for you

blackbenzz

Right around $5k. There is a 1000+whp/wtq SRT8 running around with the same trans. Southern Hot Rod did mine So far so good!

Cory @ Kleemann

if you're going for max power, ditch the SC for sure. Remember, the SC is mechanically driven, therefore it robs engine power just to spin it. For example- The AMG supercharger at stock boost is spinning at roughly 24,000 RPM and consumes about 110 HP. Theoretically, if you took off the SC and replaced it with a single, or twin turbo's, you'd be able to make 110 more HP (in a perfect world, all things being equal) at the SAME boost pressure just by eliminating the drive loss from the SC.

AMGSC

Thanks Cory! Great to hear from you. I love this Kleemann twin-screw so much that it's hard to let it go but if I must then I must.

Can you help me sell it or buy it back from me? I'm sure members would feel more comfortable buying the kit direct from Kleemann than from a forum member like me. I ran 1/4 mile trap speeds of 116mph with street tires, 80F, 1200ft elev, bad track conditions and two weak cyclinders so I know this SC kit rocks!

blackbenzz

Is it an autorotor or a Eaton? I told u to ditch the charger if you go turbo!

AMGSC

Eaton does not make a Twin-Screw design so yes it's an Autorotor 2.4 or 2.6. Apparently my tuner quoted me 800rwhp without increasing displacement with a twin-charge set-up. I'm still puzzled how that can be achieved without increasing wider bore and longer stroke.

blackbenzz

So you are saying its the old style? There are two different style kleemann chargers.

Why are you surprised? There is a replacement for displacement... it's called BOOOSTTT!!!!

AMGSC

Yes, you are right. Vadim will be using my larger injectors (in storage) and bigger fuel pump also. The ECU will remain MB ECU made by Siemens. I don't want to lose my other MB functions by going stand-alone.

btw...Are you using a CM90 or CM30 intercooler pump?

What Nitrous brand did you install in your car? ZEX, NOS, NX, etc...? Which do you recommend?

blackbenzz

Retaining the stock ECU, wow good luck!!!

CM90 but if you are goign turbo I would do air to air intercooler instead of water to air

Nitrous Express. Doesnt really matter who you go with to tell you the truth as long as you get all the safeties and such

AMGSC

Well, if VRP/PC can't do it then I don't know who can? Kleemann did a twin-turbo on another C55 complete with a wide-body DTM conversion (MBMEXICO) so apparently Kleeman has can tune the stock ECU. Powerchip should be equal to the task....

blackbenzz

You know for a fact it doesnt have stand alone?

AMGSC

According to Vadim, the Maybach Tranny includes many other components (8 key components in particular) that are hard to piecemeal together. So clutch packs are not a complete solution as something else will break unless the entire drivetrain is heavy duty.

As for the Stand-Alone or Stock ECU on Kleemann's TT C55, I will either call Cory tomorrow or he can post here to confirm or refute and share this valuable info with us.

blackbenzz

Trust me, I didnt pay $5k just to change clutch packs! Oh well, I'm gonna stop giving advice because you seem to be deadset on what you want to do.

AMGSC

Can you be more specific about your mods? You can either PM me or share that information with forum members. Isn't that the value of having a forum like this? I don't think you have any negative agenda and I appreciate your feedback. The project is just starting and he's ordering the pistons, valves, etc...I can always change my mind on the scope or method of mods.