What to do next?
At this point I would like to use the situation to make the car better. I did a compression and leakdown test and engine is fine. It runs and drives but I have no belt on the car so I can't get into boost. In order to replace the timing chain cover I have been told it would be easiest to remove the motor
So here are the following options I have come up with...1) Just fix the cover and run it as it was. Mid tens on pump gas is good enough. Never got a chance to run it with ice resevoir.
2) Put a 55k bottom end in it and turn up the boost with Kleemann charger
2a) Get a custom sc pulley made with elongated shaft to line up with where 55k sc pulley would sit and run 55k crank pulley so that I have a dual plane belt system and not overspin the accessories.
2b) Get all the accessory pulleys custom made to offset the bigger custom crank pulley (8 rib vs 6 as well) and stick with the same stock single belt setup (if clearances allow it).
2c) Just overspin the accessories with bigger crank pulley.
3) Drop 55k longblock in the car with 55k sc. Obviously do bigger crank pulley and all the bolt ons as well (already have PTE cams, 82mm TB, custome intake, ice res, heat exchanger, SLR injectors, built trans, torque converter etc). Tuning may be an issue here as well as the sc clutch control etc etc. Although my friend has a 55k longblock in his C43 and it seems to run fine with a stock C43 ECU in it

4) 55k shortblock, standalone, and custom turbo setup. Would take forever to do.
5) And the last and least favorable was given to me by my friend who owns an import shop. Put a 2JZ-GTE with a 42R and standalone in it
What do you guys think? I know there are alot of gearheads on this forum and I like hearing other peoples opinions
Last edited by blackbenzz; May 3, 2010 at 11:03 AM.

Option 2 would be a great option.
Or you can just fix the tabs on the timing chain cover and install stronger internals with a bigger bore and/or stroke??

Good for you to use this unfortunate situation to make your car better.
If you can afford the time and $$$ I'm pretty sure option 4 is what would take you where you want that beast to go... Deep into 9's.
Option 2 sounds tasty as well.
Which way are you swaying?
I think that or a custom big pulley with top mounted intercoolers on a 55k block would be the bees knees (whatever that actually means).
I think I can make it work! I'm actually very confident I can

That's the problem, time is unkown and $$ is unknown to take on a project like this. There are lots of events I would like to attend and if I do go down this route I am looking at a very long down time and very costly bill. Although I know enough people to get it done for less than what most people would spend. If I do go this route it would be best for me to forget I even had the car until it's done lol.
I am swaying towards option 2 with a very hopeful drive towards option 4 (have some people working on possibilities with this now). At the same boost level I'm at now, just switching to turbos would gain 80hp form the parasitic loss. And you know I will DEFINITELY be using higher boost with turbos. M trans is supposed to hold over 1000, it may be put to the test!
I think that or a custom big pulley with top mounted intercoolers on a 55k block would be the bees knees (whatever that actually means).
Top mount intercoolers would not be a problem. I may go the 55k route and if I do you know I will have top mounts
.I could do that as well. Project 4 involves having the engine in and out of the car several times for fitment purposes. CLK engine bay is very small and fitment of the turbos and piping will be a royal pain. The car would be down during the hardware fabbing.
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How about option 6: buy a high-mileage E55 for dirt cheap and mod the crap out of it, then take the record and call it a day
but seriously, with your modding success, many E55s will be scared out there
How about option 6: buy a high-mileage E55 for dirt cheap and mod the crap out of it, then take the record and call it a day
but seriously, with your modding success, many E55s will be scared out there

Haha, I don't think anyone is scared. There are a bunch of very strong E55s out there. Thanks though
Also do you feel over spinning the PS pump led to the failure and that this issue may prove to be a significant reliability issue in the long run??
I tend to be somewhat conservative now that I am older, to much time with cars being down trying to break the ceiling. So I would probably just fix the issue and get back on the track...lol.
That said you could always get the car running and start the swap to the turbo set up. Build a bullet proof E55 bottom end with forged internals and stroke that ***** to 6 liters
Then in the winter months (after you broke the overall record) pull the current engine and sell it, leaving room for your new 1000hp, GT45 Stroker!
Also do you feel over spinning the PS pump led to the failure and that this issue may prove to be a significant reliability issue in the long run??
I tend to be somewhat conservative now that I am older, to much time with cars being down trying to break the ceiling. So I would probably just fix the issue and get back on the track...lol.
That said you could always get the car running and start the swap to the turbo set up. Build a bullet proof E55 bottom end with forged internals and stroke that ***** to 6 liters
Then in the winter months (after you broke the overall record) pull the current engine and sell it, leaving room for your new 1000hp, GT45 Stroker!I would love to have my car up and running right now for events like muscle car weekend in ocean city but I;ve always wanted to have a V8 twin turbo. Decisions decisions...




Please scratch option 5 off your list of considerations. Your car should remain an AMG or I will personally request the perma-ban...
...JK of course
I might do that to my daily driver CLK430 but I've gone too far with the 55 to do that.
ASP said they canmake the pulleys but they are not doing any custom projects since they are moving and I would have to wait til the end of summer!
People that know me know I am very impatient! I'm all about instant gratification lol
I'm not sure what your skill level is? But if you do most of your own work here is what I would do..
Pull the engine, fix the cover.
Have custom forged pistons made, JE, arias, Ross ect(not much more than off the self stuff)
Dump the SC
Twin turbo’s, this is by no mean have to be super high dolor option, there are some good reasonable priced parts out there.
I'm not sure why you would need stand alone? Yes its better and way more user friendly but boost is boost, your engine not going to know the difference, If you can tune if for your current level than I don’t see why you could not have it tuned for turbo’s.
The only real difficult part might be the intake manifold, I don’t know what the stock on looks like or what the aftermarket you have now is like, but if its like the 55k with surge tanks than its to easy. You could run Air to air or air to water or chemically cool it with WI. Also keep in mind that the air quality will be much better than a SC.
I’m willing to bet that the parts could be had for under 5k, now if you can’t do your own fab work its going to get expensive plus you need to find someone who has the skill and knowledge to do it.


Ok ok!I'm not sure what your skill level is? But if you do most of your own work here is what I would do..
Pull the engine, fix the cover.
Have custom forged pistons made, JE, arias, Ross ect(not much more than off the self stuff)
Dump the SC
Twin turbo’s, this is by no mean have to be super high dolor option, there are some good reasonable priced parts out there.
I'm not sure why you would need stand alone? Yes its better and way more user friendly but boost is boost, your engine not going to know the difference, If you can tune if for your current level than I don’t see why you could not have it tuned for turbo’s.
The only real difficult part might be the intake manifold, I don’t know what the stock on looks like or what the aftermarket you have now is like, but if its like the 55k with surge tanks than its to easy. You could run Air to air or air to water or chemically cool it with WI. Also keep in mind that the air quality will be much better than a SC.
I’m willing to bet that the parts could be had for under 5k, now if you can’t do your own fab work its going to get expensive plus you need to find someone who has the skill and knowledge to do it.
In terms of building the motor, it would need to be sleeved to throw pistons in it. Not sure how much the 55k bottom end will hold but it will have to do for a while, I may build my factory motor while the 55k one is in the car and sell it once my other motor is done. In terms of tuning... turbos don't come in the same as a twinscrew. I'm sure you've noticed that MB tuners are few and far between. Which brings me to the fueling aspect. I will probably need to upgrade fuel pump/s. My intake manifold is integrated into one piece with the Kleemann supercharger. This will take alot of planning and will end up taking a long time. I do appreciate your input though, thanks! Last edited by blackbenzz; May 3, 2010 at 07:44 PM.
Guess the only drawback is we are getting into the "too warm for records weather" but I still am hoping for a chilly weekend and seeing that thing set the US record!!!!
After you set the record, then I say have fun and tinker around with either long blockin it, or cranking up the boost on the Klee.
-m






