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  #31  
Old 02-05-2008, 12:21 PM
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Would "ram-air" even help a non-turbo 300D, or even any diesel for that matter?
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  #32  
Old 02-05-2008, 12:35 PM
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custom 300E

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Originally Posted by hobbitss View Post
Agreed...
Where was I?? Oh ya... Awesome custom diesel and very functional hood vent, wouldn't mind having some of that work done on one that I owned...
Look a little closer- It's not a diesel.
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  #33  
Old 02-05-2008, 12:37 PM
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Originally Posted by MTUpower View Post
Ya mean like this one?....



guess no need for a hood scope here-------
Sweet. What model is that setup taken from?
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  #34  
Old 02-05-2008, 01:01 PM
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Originally Posted by hardyboy1704 View Post
Would "ram-air" even help a non-turbo 300D, or even any diesel for that matter?
Anything you do on a diesel to help it breath will always help, the question is how much. On a non turbo it should help reduce pumping losses. On my 300SD I calculated at 70 mph it would save about 1/3 HP loss in back pressure once I was up on the waste gate.
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white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
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  #35  
Old 02-05-2008, 01:11 PM
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Quote:
Originally Posted by ConnClark View Post
Anything you do on a diesel to help it breath will always help, the question is how much. On a non turbo it should help reduce pumping losses. On my 300SD I calculated at 70 mph it would save about 1/3 HP loss in back pressure once I was up on the waste gate.
But if you're a non-turbo diesel, and you're driving 70 with some sort of ram-air, will that setup act like a turbo---by pushing more air into the intake? You probably need bigger injectors though.

Last edited by hardyboy1704; 02-05-2008 at 01:17 PM.
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  #36  
Old 02-05-2008, 01:34 PM
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Quote:
Originally Posted by hardyboy1704 View Post
But if you're a non-turbo diesel, and you're driving 70 with some sort of ram-air, will that setup act like a turbo---by pushing more air into the intake? You probably need bigger injectors though.
It will act a little like a turbo but your only going to get about 0.1 psi at 70 mph and for that bigger injectors won't be needed.
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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

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  #37  
Old 02-06-2008, 05:07 AM
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Ram air is an automotive myth. It will not produce any positive pressure below 100+MPH speeds.
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  #38  
Old 02-06-2008, 12:21 PM
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Originally Posted by ForcedInduction View Post
Ram air is an automotive myth. It will not produce any positive pressure below 100+MPH speeds.
Mercedes redesigned their air intake in 84 to better take advantage of it on the 300SD and 300D ( I don't know about the CD). The redesign had to have improved things some measurable amount to justify it since their previous funnel design would qualify as ram air far as marketing was concerned and the fact auto companies are the best penny pinchers in the world and wouldn't pay for a redesign otherwise.
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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

http://ecomodder.com/forum/fe-graphs/sig692a.png
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  #39  
Old 02-06-2008, 12:33 PM
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What about the Kali versions that take air from the fender?

The intake funnel is a cold air intake but the inlet surface area and clearance between the radiator bracket and hood line are far too small to create any positive pressure on a 617. The funnel on the 616 and non-turbo 617 are even smaller.
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  #40  
Old 02-06-2008, 05:01 PM
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The 84 and 85 300SDs intake is in front the right hand side of the radiator so it gets plenty of air flow. I'm a little surprised that no one is making a "performance" intake retro fit kit for older models.


As far as fender intakes, I do know that the front fender well is a place where pressure builds up at speed. On the superbirds they actually put a rearward facing vent to improve aerodynamics by venting some of this pressure as well as helping to keep the front end planted on the ground. To me though it seems like a good place to suck up dust.
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green 85 300SD 200K miles "Das Schlepper Frog" With a OM603 TBO360 turbo ( To be intercooled someday )( Kalifornistani emissons )
white 79 300SD 200K'ish miles "Farfegnugen" (RIP - cracked crank)
desert storm primer 63 T-bird "The Undead" (long term hibernation)

http://ecomodder.com/forum/fe-graphs/sig692a.png
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  #41  
Old 02-06-2008, 05:05 PM
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Originally Posted by ConnClark View Post
I'm a little surprised that no one is making a "performance" intake retro fit kit for older models.
Oh, but there is a company that makes "performance" intakes...
http://www.wade************************/diesel.html
...and there are actually people that fall for it and pay actual money for them.
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  #42  
Old 02-06-2008, 05:28 PM
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thats it! I'm going into business for myself!

Rustoleum Red Spray Paint - 3.99

Rubber coupling from Home Depot - 1.99

2.5 Inch Conduit - 8.99

Cone Air Filter - 15.99

Getting people to buy all that as a performance kit - Priceless
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  #43  
Old 04-07-2009, 02:36 PM
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This morning I saw a phosphorescent lime green 240D, lowered, ground effects, rear wheel wells tubbed, road slicks, hood scoop, lighted spoiler, and a gazillion watt BOOM BOOM, rattling/clattering 25 MPH down eight mile road with a blown head gasket.

SICK.......
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