Wow, nice read! You CAN teach an ole dog new tricks. Very informative! OK, so now with all the complexities, who's done a stroker on our 3.2L M112 motor? Can the crank/pistons/block and heads handle the wide RPM range without failing (seeing as you want a stealth OEM looking door blower-offer)... Anyone accomplish it with our 3.2L's? Newly inquiring mind (here) wants to know!

 

Swap in an E37 block from

• 2003–2005 ML350
• 2003–2006 S350
• 2003-2006 SL350

That will get you 3.7 liters.

 

Ahhh now we are getting somewhere, the N/A has the E32 version which is already stroked (according to reference Mercedes-Benz M112 engine - Wikipedia, the free encyclopedia ). Seeing as I am learning like the grasshopper of Kung-Fu, is there any differences in the 3.2L stock N/A that would require a different version of the motor? I guess you can re-stroke (so to speak) unless there is too much already modified internally requiring a replacement plus associated. In other words can OUR E32 be re-stroked successfully, or will another version have to be dropped in? Also reading the wiki page, I remember quite a while ago folks debating how different the N/A vs the SRT blocks (lower end) were different, was that ever resolved or are the the same blocks with just slightly differently heads and of course the intake manifold/supercharger?

 

The block on the 32 is completely different, as well as everything inside. The heads are the same, cams are different, rocker arms are different, as well as valve springs. Valves are the same (surprisingly).... Any motor can be bored or stroked, its just a matter of money, how much bore and/or stroke, and how much your shop is willing to do. The 3.7 has been done though, the pistons he used are from the 55 amg motor which are way too much money for which is why I decided not to go that route. Like previously said, a ton was custom after that, its not an easy or cheap solution.

 

Yeah, kinda what I thought. You did say the heads are identical but I remember someone posted way back they had a problem fitting the supercharger on the N/A heads without grinding something down for clearances. I might have misunderstood but the results are the same. I bow to your in-depth knowledge in this regard, as I am but a grasshopper trying to keep away from high speed vehicles windshields on the road to enlightenment!

 

Speaking of enlightenment GG .. did you go to the larger MAF housing when upgrading to the 74mm TB? Got that, gasket, and TB coming in this week.. Goodbye turbo.. Hello standard mods.. Now just need a sale on a tune..

 

Me too, for anybody at Eurocharged listening

 

I wonder why they had issues

Both cylinder heads have different part numbers (left and right) but the part numbers are listed for SRT6 (EGZ) and the NA (EGX)... 05096475AA for the left cylinder head on both.

And I completely understand where your coming from GG, I am learning as much as I can right now so I can figure out what make over to invest in lol.

 

Sho-nuff, I got a really el-cheapo china knockoff off of fleabay and knocked the screen out of it and then (the important part) took my sensor out of my 68mm MAF and put it in place of the sensor in the 74mm MAF. Thanks to a very nice gentleman (which this forum is just full of) I get a new gasket and did the install all by myself. I was having a little trouble with seating the gasket (because it did not want to stay in the groove in the TB) but after solving that little annoying situation, it went very well. I was extra careful (because I want to only do things like this once) and when I fired that ****** up it was like I was after my first sexual encounter. Yeah it was that good! Took a few for both my pulse and the idle to slow down! After a few burps of the throttle it kinda relearned and settled right down. Just for $hits n grins, I did a throttle reset (after it was pretty much settled down) and been grinnin ever since! I think if you are very careful in reseting all your hoses and make sure you seat that 'O' ring gasket (providing you have a good TB) you'll be very happy with the pep your girl has!

 

I am on the path.. taken by one still on the path.

Little NOS and ya best be moving over! LOL.

Wife was glad to hear I'll settle in and be happy with about 40 more HP when said and done.. I almost think she was worried about me getting another 80 or so...

 

Best of luck, it's really pretty easy if you take your time. I also would suggest you use a in/lb torque wrench when you tighten those TB screws/bolts. You sure do not want to strip or bungle any of those, for sure! Make extra sure you get ALL the air hoses back correctly, in fact make extra sure you do not damage them or the fittings while disassembly. I used just a tiny bit of Vaseline (nothing you can scrape off just enough to let the hoses slip on easily). By the time the engine warms up to temp twice, any trace of the vaseline will have evaporated.

 

Yeah now that I've grown older.. I've learned taking the time to do it right is better than taking the time to do it twice... LOL.

 

Starting down the standard path myself. I was able to snag a cheap MB airbox from eBay, said it was from a 430 but it had the v6 nose piece included. I asked to make sure and the guy insisted it was off a V8 so I risked it. Worst case I got the v6 nose piece for a little more than the going rate with a free v6 airbox attached . Will pick up the tubes from the dealer and start looking for the bigger TB. Once that's done try to extract a refund from this and get a tune provided nothing new has developed (ha)

 

Whatever it came off it's the part number that is important. Wrong part and it hits the hood and liner.
They look identical until you study the height.

 

Made it "official" with an email to Stephanie yesterday.. for whatever it was worth..

They promised to respond next week to it.. with pictures... LOL.. (JK)

 

So what happened to the Turbo discussion?

 

After almost a year now since the first prototype was delivered.. figured we'd move on to realistic topics?

 

Yea it looked kind of tall but the only part number shown was for the front section, I just said F it and ordered as I was going to have to hunt the nose piece down anyway. I'll just re-sell the box for cheap if its the case and call it a deal for the front section.

03 04 05 Mercedes Benz S430 Air Cleaner Box Engine Cover Intake W220 220 | eBay

All kinds of issues with the listing but free shipping and most front caps are in the ~80 buck range I figured it was worth a shot if the whole thing works.

 

That would be a new thread under Realistic Topics.

 

Well, I guess this is what they meant for "after Thanksgiving" for the Turbo updates.
Are you planning to Dyno your car before you do the mods? mainly for interest.
Mine was 168 HP, now 208.