Stop in for a cup of coffee

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HEMI
360DartGT66 said:
Hey, did anyone ever experiment with variable runner length manifolds? Like a trombone. I picture the carbs and a plenum on vertical tubes with a telescopic section followed by a curve to meet the intake ports.

How hard could that be?
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The modern Chrysler engines use variable runner active intakes controlled by a flapper valve to switch from long tube to short tube based on rpm. They are used on the 3.5L V6, 5.7L Hemi V8 (truck engine) and the 6.4L Hemi V8. All of the different runner lengths are cast into the intake and the flapper valve redirects the airflow. No need to trombone anything, just a simple flat plate air door is all that is needed with port injection at the heads.

Coupled with variable valve timing, it allows them to put down numbers like these while getting over 20 mpg highway:

3.5L V6 250 hp/250 lb-ft tq
5.7L V8 390 hp/407 lb-ft tq
6.4L V8 485 hp/475 lb-ft tq
 
Ddaddy said:
HEMI
The modern Chrysler engines use variable runner active intakes controlled by a flapper valve to switch from long tube to short tube based on rpm. They are used on the 3.5L V6, 5.7L Hemi V8 (truck engine) and the 6.4L Hemi V8. All of the different runner lengths are cast into the intake and the flapper valve redirects the airflow. No need to trombone anything, just a simple flat plate air door is all that is needed with port injection at the heads.

Coupled with variable valve timing, it allows them to put down numbers like these while getting over 20 mpg highway:

3.5L V6 250 hp/250 lb-ft tq
5.7L V8 390 hp/407 lb-ft tq
6.4L V8 485 hp/475 lb-ft tq
Click to expand...
Yep and they copied that from the V6 in the 3S diamond star platform
 
Thank you @Ddaddy, Mikes and everyone for the well-wishes. My Dad was falling too, now he scoots around in a wheelchair for safety's sake, which I understand. His problem is not only balance but his brain often forgets what he's doing...then his legs would just give way. I've come to understand that dementia is really a disease, not just a term for confusion.
 
Ddaddy said:
HEMI
The modern Chrysler engines use variable runner active intakes controlled by a flapper valve to switch from long tube to short tube based on rpm. They are used on the 3.5L V6, 5.7L Hemi V8 (truck engine) and the 6.4L Hemi V8. All of the different runner lengths are cast into the intake and the flapper valve redirects the airflow. No need to trombone anything, just a simple flat plate air door is all that is needed with port injection at the heads.

Coupled with variable valve timing, it allows them to put down numbers like these while getting over 20 mpg highway:

3.5L V6 250 hp/250 lb-ft tq
5.7L V8 390 hp/407 lb-ft tq
6.4L V8 485 hp/475 lb-ft tq
Click to expand...
Discrete changes is for sissies. I want linear runner length variation. :D

We'll see. It's probably just a pipe dream. Heck, I don't even know how to TIG weld ...
 
I'm awake... sadly. 8 month old has been up every other hour
 
I think it's pretty good and organized ...I remember awhile back big block dart dot com had something similar, not sure if it still there.

There was someone last night on facebook asking about swapping a later duster tail panel to the earlier style, I used an article from there to point him over here to FABO.
 
Good morning. Really feel like I should be going To bed not away from it.
Joeychgo said:
What do you guys think of the new How To Article system?
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Haven't had a chance to check it out yet. Definitly a good thing though. I've seen a lot of good info get lost. Can only have so many stickys... If we see old threads that could go in, who do we send 'nominations'to?
 
Joeychgo said:
WTF is an ID thread
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"how to ID a small block" "4 speed shifter ID thread" "how to ID a small oil pan" Those are not so much "how to" articles but rather an article to Identify something.

"how to swap a tail panel" is not an article to identify anything but rather to give technical instruction.

They are two different types of articles

There are a lot of threads made over the years to identify something that are not included in this section so what is the basis?
 
Rainy Day Auto said:
There are a lot of threads made over the years to identify something that are not included in this section so what is the basis?
Click to expand...

Because I didn't go through all of our threads to find things. Feel free to create articles if you like with the ID information you think should be in there. We will review it and approve it if appropriate.
 
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