USA W124/OM606 daily driver/superturbo project

HoleshotHolset

09-14-2011, 10:38 PM #14

(09-14-2011, 03:28 PM)johan84 very interesting that your going to upgrade the 722,6
but what is the goal that you want for the engine
hp/torque?

Eventually, I'd like to see 500hp and that will probably be somewhat more than 800 ft-lbs.

This isn't a big deal for the 722.6 once it is modified a bit since the 722.6 is used behind the 5.7L and 6.1L Hemi gassers...those guys have put almost 1000hp through the 722.6 transmissions. Granted, they've also been upgraded...which includes a modified valvebody and machined hard parts to allow fitment of more clutch/steel plates in each clutch pack. This is a costly upgrade, but if you want it to last very long with high HP/torque, you need more surface area in the clutch packs (via more clutch plates/steels) and more line pressure (via modified valvebody). By the way, there's also a transbrake option available for the 722.6. Cool

Check out Paramount Performance:
http://paramountperformanceproducts.com/.../products/

Here is a quick update on my progress...

Exhaust manifold flange arrived from Sweden (http://shop.klracing.se/):

-6AN braided line and fittings (for transmission oil cooler), transmission oil cooler (left), engine oil cooler (right), good beer:

Here's the W124's bumper support - before alteration:

Here's the W124's bumper support - after alteration:

The W210 OM606.962 oil pan will not clear the W124's sway bar. I thought it might fit...but it just wasn't going to happen:

Here is the oil cooler (not used on the OM606.962) after unbolting from the oil pan:

Here is the oil pump - this picture also shows how the oil is fed to the oil cooler bolted to the oil pan (the fittings with the green o-rings):

Here is the oil pan as removed from the W124 (before cleaning) showing the area where the oil cooler bolts up:

Here is the oil pan from the W124 - taking a bath. The pan has interesting design features that direct oil and oil spray from the crankshaft into the sump:

Here is the oil pan after I welded a piece of 0.250" thick plate where the oil cooler would normally bolt up (inside view):

Outside view of the area I welded on the oil pan:

The outside was welded first and I improved a bit on the inside...figures...nobody will see that. Multiple passes were made since a single pass did not penetrate deep enough into the plate as I would like.

As you can see, I'm not exactly a professional welder. I essentially taught myself to weld...and I'm very new to welding aluminum (my attempts at TIG welding aluminum in the past were bad at best...).

Luckily, the oil pan is a very nice alloy to weld - just a little pre-heat with a propane torch is all it took to get a good bead going. The pan is thin in some spots, so you have to be careful. I used my Millermatic 251 MIG welder with a spool gun and 0.035" wire, 16 volts / 288ipm wire feed speed, 100% Argon with plenty of flow.

The plate I welded in place was a piece of scrap I found at work. I made a round piece from the scrap to fit inside the hole in the pan by using a 2.75" holesaw - so I had to fill in the pilot hole with a little welding. This isn't the most glamourous fix...but it'll do. Big Grin

Beers,

Matt

'07 W211 OM642
'95 W124.131/722.435, 211k - daily driver/Superturbo project - OM606.962 with "M" pump...under construction! (build thread here)
'99 W210.025 - gone, but not forgotten
'94 Dodge/Cummins - gone, but not forgotten

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