16V Transmission bolt pattern - PeachParts Mercedes-Benz Forum

AustinsCE · #1 10-04-2006, 11:10 PM

Is the 16V trans. bolt pattern really the same as the M104? I tried searching but didnt get a real conclusive 'yes' feeling out of the results. I know all the custom driveshaft etc. etc. etc. all I'm fuzzy on is the bolt pattern on the bellhouse and the crankshaft nees a drilled hole? Is that for the shaft to slip in or the pilot bearing or something? And while I'm here, anyone got a good place for a performance flywheel/clutch? Apparently it takes a 300e size flywheel but the 16v clutch? So, do they bolt up or is there some misalignment ie totally custom flywheel? Sorry if this has been posted already, but I couldn't find it, sounds familiar though. Lot of talk on trans swaps lately.

300EVIL · #2 10-04-2006, 11:24 PM

Well, I know the 16V uses the M102 block with a Cosworth head. The M102 does not share the same bolt pattern as the M103/M104 which are the same.

MTI · #3 10-05-2006, 02:51 AM

Quote:

Originally Posted by 300EVIL

Well, I know the 16V uses the M102 block with a Cosworth head. The M102 does not share the same bolt pattern as the M103/M104 which are the same.

?

Aren't the transmissions for the M102 and M103 interchangeable 722.4 units?

300EVIL · #4 10-05-2006, 03:01 AM

I'm 99.9% sure the 722.3 is not the same however, the manual may be the same.

mbdoc · #5 10-05-2006, 09:32 AM

The M102/103/104 engines share the bell housing bolt pattern.

The M103 engine casting is identical to the M102 with 2 more cylinders.
The M104 engine is basically a M103 block with double over-head valve train.

t walgamuth · #6 10-05-2006, 09:39 AM

and all benz engines i have seen are drilled for a pilot bearing regardless of whether they are from a stick or automatic car.

(i have not seen any 102 or 103 engines though)

tom w

MTI · #7 10-05-2006, 02:19 PM

Whew! I thought I might have missed a service bulletin.

AustinsCE · #8 10-05-2006, 04:34 PM

Alrighty, thanks a lot guys. So then you're telling me if I bought one I could "easily" get it in? How sure are we all, like physically seen them side by side sure? Not to sound like a dick or anything, but apparently those transmissions arent easy to come by and I think I might got one coming, for a price, so if you say its good I trust you all. This place hasn't steered me wrong yet.

300EVIL · #9 10-05-2006, 06:09 PM

Quote:

Originally Posted by M.B.DOC

The M102/103/104 engines share the bell housing bolt pattern.

The M103 engine casting is identical to the M102 with 2 more cylinders.
The M104 engine is basically a M103 block with double over-head valve train.

Well, you would know. Thanks for the input and sorry for leading everyone astray. I have an M102 block at my shop and It didn't look like to would mate to a 722.3 so I figured that was the case. The automatic tranny that came with the M102 was very different looking from the 722.3 I'm used to.

mbdoc · #10 10-11-2006, 09:39 AM

The 190'S(W201) all used a 722.4 series trans. The 300E 2.6(260E) & the 1994-96 C-class also used a similar 722.4 trans. Other 103 & 104 engines used the 722.3 trans.

chuni959 · #11 09-26-2007, 05:21 PM

just in the process of mating my brothers m104 (CIS SL model) to my 16v trans. Had a 190e 2.6 5-speed DUAL mass flywheel that didnt work, you need the single mass flywheel from any 124 or 201 5-speed 6-cyl car. From the flywheel back i do believe everything is 16v. (including shift linkages and gearbox)

nick.ged · #12 09-11-2009, 08:16 PM

i have 2.3 16v box, linkage and shifter in my 103 engined 124, straight swap, no issues what so ever, just need the single mass flywheel, or you can mod the 16v flywheel if cant get 103 item.

Sev · #13 10-06-2009, 03:12 AM

Quote:

Originally Posted by nick.ged

i have 2.3 16v box, linkage and shifter in my 103 engined 124, straight swap, no issues what so ever, just need the single mass flywheel, or you can mod the 16v flywheel if cant get 103 item.

i would not use the 16v flywheel for swapping a 16v tranny onto an m103--the 16v flywheel is 7-8 pounds lighter than the single mass. I believe my single mass for the 190e was 21 pounds, I had it lightened to 17lbs. i recently heard the 16v flywheel is like 14lbs

nick.ged · #14 10-06-2009, 09:56 AM

why would you not use the lighter flywheel? i had my 103 one lightend by 8 lbs.

motor revs much better, and the effect of lightining flywheel makes the car accelrate much quicker, google it.

AustinsCE · #15 10-06-2009, 02:21 PM

+1. I have a 104 and 16v flywheel but with an unsprung clutch, it chirped into 4th with a blown headgasket. And 14 lbs isn't that light, my Audi has a 9.5 lb flywheel. Sounds like a tractor, but revs like nobody's business. The Benz makes no noise. It's a really good combo, in my opinion, especially with the direct feel of no flex discs! But I would go with the sprung clutch.