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  #1  
Old 09-03-2010, 10:29 PM
t walgamuth's Avatar
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Location: Lafayette Indiana
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Cd and total drag for a 123 body or a 126 body?

I found a large chart with many vehicles but the 123 and 126 are not included. Anybody have those figures?

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #2  
Old 09-03-2010, 10:31 PM
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Um.. I read this as "cd" being "cross dress" and "drag" as the same. Thought you wanted to dress up some Benzes lol
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  #3  
Old 09-03-2010, 10:45 PM
t walgamuth's Avatar
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Quote:
Originally Posted by LandYaghtLover View Post
Um.. I read this as "cd" being "cross dress" and "drag" as the same. Thought you wanted to dress up some Benzes lol

You are a very sick person!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #4  
Old 09-03-2010, 10:54 PM
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Quote:
Originally Posted by t walgamuth View Post
You are a very sick person!
Ya... thats what my therapist says too!
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  #5  
Old 09-03-2010, 11:28 PM
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0.36 for 126 sedan
0.34 for 126 coupe


0.44 for W123 sedan
0.40 for W123 coupe


For reference the W124 could go as low as 0.28 depending on the model and the 190 was 0.33
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  #6  
Old 09-04-2010, 06:51 AM
t walgamuth's Avatar
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Thanks, Fulcrum, do you happen to have the frontal area or the total drag ov them?
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #7  
Old 09-04-2010, 07:41 AM
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Is it just general curiosity or are you planning on making an 1/8 mile drag car?
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'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)
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  #8  
Old 09-04-2010, 07:54 AM
t walgamuth's Avatar
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I'm trying to figure out what gearing I would need if I put a 617 in my caprice wagon.

The wagon has a cd of .36 but the frontal area is bigger than the benz so I am trying to figure out how it would need to be geared.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #9  
Old 09-04-2010, 08:54 AM
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Quote:
Originally Posted by t walgamuth View Post
I'm trying to figure out what gearing I would need if I put a 617 in my caprice wagon.

The wagon has a cd of .36 but the frontal area is bigger than the benz so I am trying to figure out how it would need to be geared.
Gotcha!

I wish I were in a position to take it off your hands so that you wouldn't have to consider such equations.
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1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)
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  #10  
Old 09-04-2010, 12:42 PM
t walgamuth's Avatar
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You need it!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #11  
Old 09-04-2010, 02:43 PM
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Quote:
Originally Posted by t walgamuth View Post
You need it!
I don't disagree, it'd be perfect for hauling my crew and a trailer around. I've got some liquidation of under used assets to do first. Who knows...
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1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)
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  #12  
Old 09-05-2010, 12:24 AM
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Location: beautiful Bucks Co, PA
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Quote:
Originally Posted by t walgamuth View Post
I'm trying to figure out what gearing I would need if I put a 617 in my caprice wagon.

The wagon has a cd of .36 but the frontal area is bigger than the benz so I am trying to figure out how it would need to be geared.
How does the present gearing of the Caprice compare to the 617 donor car? Is there a large selection ratios for the Caprice?
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  #13  
Old 09-06-2010, 08:30 AM
t walgamuth's Avatar
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The caprice has a293 gear in the rear end plus a 30% od fourth gear. the mercedes car has either a 307 if i use a turbo motor or 346 if i use a non turbo motor. my first blush calculation would be to use a 410 rear for the chebby which I believe is a bolt in for just the pigs head on the rear end. that is for using the chebby tranny. if i swap in the benz tranny the gearing would need to be more close to the 346 i believe if using the turbo motor.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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  #14  
Old 09-06-2010, 02:36 PM
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I'd would use the Benz trans and not change the existing rear ratio. The difference between the Chev and Benz rear ratio is less than 5%.
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  #15  
Old 09-06-2010, 09:52 PM
t walgamuth's Avatar
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Good thought, though the chebby weighs 4200 and has by my eyeball 15 to 20% more frontal area.

My latest thought is to reconsider the idea of putting in a chebby diesel engine.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.
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