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  #16  
Old 06-05-2008, 07:39 AM
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He's right though. Pushing a 350's power levels is tempting fate.
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  #17  
Old 06-05-2008, 10:05 AM
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Take the advice for what it is worth. A little sarcasam and a warning from an experianced member. The 350 is known for rod issues, and upping pressure in the cylinders is tempting fate....
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  #18  
Old 06-05-2008, 11:06 AM
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Originally Posted by blackestate View Post
Take the advice for what it is worth. A little sarcasam and a warning from an experianced member. The 350 is known for rod issues, and upping pressure in the cylinders is tempting fate....
I think Anthony has been around the MB diesel block a few times.
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  #19  
Old 06-05-2008, 11:13 AM
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somehow i doubt that that is the original 350 engine.
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  #20  
Old 06-05-2008, 11:19 AM
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Quote:
Originally Posted by Anthony Cerami View Post
If you cant say anything nice ....don't say it.....
I was being totally serious. Smart about the rod cut, however I don't see how it would adjust wastegate pop pressure. I would love a 350 engine with new rods in it.
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  #21  
Old 06-05-2008, 12:42 PM
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Originally Posted by pawoSD View Post
I have had a straight pipe (2.5") for almost a year now.....and it doesn't bother me at all....you can tell its louder with the windows down, and can hear the deeper tones in the car a little more....but its insignificant, and I like it.

2.5" pipe from the turbo to the back of the car.
Same here.
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  #22  
Old 06-05-2008, 01:40 PM
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Happy to sell you one.

The rod cut and adjustment is pretty standard stuff, the way they were all made for racing for a while. The problem is that I wanted to do the same with an adjustment turnbuckle, but don't know where to get a LH threaded die for one rod end.

The wastegate has an internal spring, lengthening the rod increases spring pressure, should have a direct relationship on the boost pressure that opens the wastegate.

Quote:
Originally Posted by winmutt View Post
I was being totally serious. Smart about the rod cut, however I don't see how it would adjust wastegate pop pressure. I would love a 350 engine with new rods in it.
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  #23  
Old 06-05-2008, 02:01 PM
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Quote:
Originally Posted by babymog View Post
The wastegate has an internal spring, lengthening the rod increases spring pressure, should have a direct relationship on the boost pressure that opens the wastegate.
That makes perfect sense.
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  #24  
Old 06-05-2008, 02:54 PM
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Originally Posted by gskurka View Post

What muffler did you use? Does anyone have experience using Borla?

Greg


I have and Aero-Turbine muffler on mine. It was the best "straight-through" muffler I could find. Mine is a 2.5" version, they make the same thing in a 4" for diesel pickups.
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  #25  
Old 06-05-2008, 02:57 PM
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Quote:
Originally Posted by babymog View Post

The wastegate has an internal spring, lengthening the rod increases spring pressure, should have a direct relationship on the boost pressure that opens the wastegate.

Shorter rod = more spring pre-load = higher boost

Making the rod longer will just hold the wastegate open.

At least that is how all of the intenal wastegate actuators I have seen work.
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  #26  
Old 06-05-2008, 09:28 PM
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Borla

[QUOTE=gskurka;1874472]
Quote:
Originally Posted by Anthony Cerami View Post
I have a 91 350SD Turbo ......
Yes I custom bent a 3" pipe all the way back with a stainless flo-through muffler and duel stainless tips.
Its not loud at all …. However it does feel like it has more power... I'm at 32 -34 MPG on the highway
BTW I also ….
-calibrated the injectors so they all “pop” at the same pressure…
-removed the ADLA on top of the injector pump
-Adjusted the Waste gate for a little more boost
-Set the timing. 2-3 degrees advanced (replaced the timing chain as well)
-Installed 16 in custom rims ant tires…..
The 350SD….It’s a great car.....

Anthony,

What muffler did you use? Does anyone have experience using Borla?

Greg
Yes Greg Both Diesels have a Borla exhaust systems...I do sheetmetal fabrication so some things are custom made......
In fact I ran the 99 with an open pipe out the side for several weeks until I got the replacement system and its rather quiet....
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  #27  
Old 06-05-2008, 09:56 PM
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I'm sure there is a significant weight difference between a straight pipe and the factory system.
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  #28  
Old 06-05-2008, 11:13 PM
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Quote:
Originally Posted by Anthony Cerami View Post
I have a 91 350SD Turbo ......
Yes I custom bent a 3" pipe all the way back with a stainless flo-through muffler and duel stainless tips.
Its not loud at all …. However it does feel like it has more power... I'm at 32 -34 MPG on the highway
BTW I also ….
-calibrated the injectors so they all “pop” at the same pressure…
-removed the ADLA on top of the injector pump
-Adjusted the Waste gate for a little more boost
-Set the timing. 2-3 degrees advanced (replaced the timing chain as well)
-Installed 16 in custom rims ant tires…..
The 350SD….It’s a great car.....



What, at 55mph? Did you happen to correct for the new tire height with those wheels?

Dual. Duel would be with a pair of pistols.



The 300SD makes what, 120hp/170tq? Take it for what it's worth... an econo-car with adequate power and acceptable performance. I drove my SDL with an open downpipe for a while when waiting for new exhaust, no power gains over a car with a full exhaust. Yes, gutted cat.

I have cut open stock exhaust systems on these W126s, resonators and mufflers... both are pretty much straight through in design. Unless you like wasting money, use that money for fuel, beers, whores, cigars, or whatever else tickles your fancy.
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  #29  
Old 06-05-2008, 11:17 PM
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Quote:
Originally Posted by Hit Man X View Post

I have cut open stock exhaust systems on these W126s, resonators and mufflers... both are pretty much straight through in design. Unless you like wasting money, use that money for fuel, beers, whores, cigars, or whatever else tickles your fancy.
F*CKIN A RIGHT!

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