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  #46  
Old 05-22-2009, 08:45 AM
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Quote:
Originally Posted by RBYCC View Post
If you are still stock at 9.2:1 then you need not reduce your compression....just maintain a rich enough AFR under boost to prevent detonation.

Keep in mind you are not constantly under boost...
I can drive all day and as long as I don't rapidly increase my throttle opening I stay in vacuum to atmosphere on the gauge.

I've raised my boost to about .68 bar with no problem.
The install is about two years old with initial boost at .42 bar and slowly working up via the MBC.
About 6000 miles on the turbos and running stronger and stronger.

Ed A.
Ed at 0.68 your car should do the 1/4 in the high 13's and trap of almost 107mph

Flooring it from 50mph to 100 mph thats the sweet spot.


but in 2 yrs 6000miles!!!!!! boy did i abuse my poor w124, i did almost 15k miles in less than a year.
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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
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  #47  
Old 05-22-2009, 11:42 AM
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Today I got good news, the problem is a bent valve on the sixth cylinder, pistons are fine. Must have bent the valve when assembling the head ... . Since the engine is apart I've decided to do a full rebuild i.e. new piston rings, conrods and main bearings, valve oil seals, and so on . I've ordered the parts and hope to have the car ready by the end of next week .

Ed, I can maintain a rich mixture with no problem with the current injectors (6x630cc) and Megasquirt. I can even get it into the 10-s with no problem (currently it's tuned rich ~ 11.0:1 at boost, as a rule I start rich when tuning and then go back), I can also pull back timing . The engine compression is stock 9.2:1
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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)
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  #48  
Old 05-22-2009, 11:52 AM
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Quote:
Originally Posted by Joreto View Post
Today I got good news, the problem is a bent valve on the sixth cylinder, pistons are fine. Must have bent the valve when assembling the head ... . Since the engine is apart I've decided to do a full rebuild i.e. new piston rings, conrods and main bearings, valve oil seals, and so on . I've ordered the parts and hope to have the car ready by the end of next week .

Ed, I can maintain a rich mixture with no problem with the current injectors (6x630cc) and Megasquirt. I can even get it into the 10-s with no problem (currently it's tuned rich ~ 11.0:1 at boost, as a rule I start rich when tuning and then go back), I can also pull back timing . The engine compression is stock 9.2:1
Go for it then....boost is a very sweet thing !!!!!
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1999 C43 AMG
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  #49  
Old 05-22-2009, 06:17 PM
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those are massive injectors considering what boost level you are aiming for,
have you upgraded you fuel pump also?
and what fuel pressure are you running?
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  #50  
Old 05-23-2009, 01:40 AM
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Quote:
Originally Posted by c280nz View Post
those are massive injectors considering what boost level you are aiming for,
have you upgraded you fuel pump also?
and what fuel pressure are you running?
I'm running the stock 2.5-16v twin pump setup, stock pumps for now, fuel pressure is set at 3 bar at idle with vacuum/boost signal disconnected from the fuel pressure regulator .

Oh btw I've decided to go with three-material Sputter bearings.
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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)
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  #51  
Old 06-01-2009, 07:19 AM
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Small update, engine is almost ready. The bottom part is put together, today the head is going on and hopefully tomorrow the engine is going into the car . Hope to start driving it this saturday .
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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)
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  #52  
Old 06-01-2009, 08:30 AM
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Quote:
Originally Posted by Joreto View Post
Small update, engine is almost ready. The bottom part is put together, today the head is going on and hopefully tomorrow the engine is going into the car . Hope to start driving it this saturday .
Good Luck......!!!!!
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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
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  #53  
Old 06-02-2009, 06:59 AM
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Originally Posted by RBYCC View Post
Good Luck......!!!!!
Thanks . On the 14-th this month there will be an open drag day and I hope I can be there to make a couple of runs .
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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)
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  #54  
Old 06-11-2009, 12:08 AM
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any good news here?
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  #55  
Old 06-11-2009, 01:53 AM
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Quote:
Originally Posted by Chlippo View Post
any good news here?
Good and bad, the good news is that the engine is ready and this Sunday the car will come out of the garage, bad news is that I wont be able to make the drag day since I have to break in the engine. Will keep you posted on how the car runs .
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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)
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  #56  
Old 06-23-2009, 02:04 AM
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Small update, the engine is in the car and it's running very nicely (covered 150km ), however it's still detonating and I can't figure out why (timing is down to 19 degrees at 0.5 bars and AFR is ~ 11.8). I'm starting to suspect the Megasquirt setup (ignition part). Bad news is that something in the clutch broke Sunday so these days the gearbox has to come off, hope there is not a lot of damage. Btw does anyone have an idea of how I can measure the ignition timing with the timing gun while driving the car (i.e. under load) ?
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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)

Last edited by Joreto; 06-23-2009 at 04:51 AM.
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  #57  
Old 07-14-2009, 08:04 AM
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Haven't updated in a while, the clutch problem is fixed. The problem was in the clutch bearing which had melted the plastic part (sachs bearing), swapped in a new one and everything is fine now. Whats left is to solve the detonation problem, hope to do that this weekend. Mean while today I'll disconnect the turbo hose from the throttle body and go for a drive to check if the detonation is boost related or not.
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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)
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  #58  
Old 07-19-2009, 02:03 PM
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Finally good news. Today I solved the detonation problems, now I can drive the car in boost with no detonation. Problem was in the setup of megasquirt , specifically in the bosch ignitor setting .

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190E 3.0-24v (M104 980) turbo @ 0.8 bar
1/4 mile: 2.483 / 13.540 / 175.17 km/h (street tires)
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  #59  
Old 07-19-2009, 02:20 PM
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joreto, gr8 news. Cant wait to see how the car turns out to be.
Man need ur input in my megasquirt c36AMG thread.
__________________
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
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  #60  
Old 07-21-2009, 01:26 PM
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I had a Volvo 740 Turbo for many years. It used a reduced compression ration, dished pistons, Bosch LH 2.2, knock sensor and, most importantly, a rising rate fuel pressure regulator. This means under boost, more fuel is injected. Did you use this type of FPR?

Just asking, maybe you already know.
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Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

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