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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

Looks like the crank throw arrangement is skewed.

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Jim

That didn't take very long. Haven't taken the bottom apart but it seems like the #1 rod is broken. Its a heart breaker, its the only Cosworth customer we have. I completely redid the head and timing drive about 15K ago. The customer beats the hell out of it and it finally gave up, unfortunately the condition of the car doesn't warrant repair.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

First time i see something similar.
He should have beaten the hell out of it to get it to this point.

I'm really interested to know why the cossies have (relatively) frequent rod failures. They use the exact same rods as the M103 and M104 3.0/3.2 which can be seen elsewhere just getting the crap beat out of them, with seemingly few rod failures. The M102's, however suffer extensively with failures in the neck of the con rods.

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1993 190E 2.6 Sportline

I4 a bit more vibration then the I6, higher RPM, more stress with manual transmission....

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http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

The 102 has a bigger bore and I assume a heavier piston to go with it as well.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

YET the m103 can be boosted to make 400 hp safe. strange wouldn't u say

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Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed

The vibration part I suspect you are correct on. The M104's can live at 7k without much fuss which is the 2.3's Factory redline. Not sure about the manuals, a multitude of the boosted cars here are/were manuals. Although I could buy this if a large portion of the failures was either on engine hold back, or on over rev (no idea).
This I think is closer, or another part of the picture.
More than that if you can keep it from knocking.

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1993 190E 2.6 Sportline

Turbo-ing is easier on rods. Typically the highest load on the rod is at the end of the exhaust stroke as the piston reverses direction and starts back down. This wants to pull the rod apart, esp at higher RPMs. Backpressure from a turbo actually cushions the piston as its rising on the exhaust stroke taking away a little of the strain on the rod as it reverses back down the hole.

With the choke of a snail I have bolted on mine, it should never break a rod. I wouldn't be too surprised if I bent one eventually though.

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90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff