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Results 211 to 225 of 247
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01-02-2018, 08:16 PM #211
The first time I looked at the late model downdraft intake , I thought that they seriously bumped their head . There was no way that the top cylinder could get air. After all it would rush in and bypass the top , let alone make the sharp 110* turn and form a column and go thru the reeds uniformly .
Then after taking the time to measure the inside volume of the box , I found out that it held a larger capacity than the actual size of the motor by close to 30 cubic inch's .
So in essence , it is somewhat of a large "still air" box . The motor will never reach a percentage of volumetric efficiency over 100 to tax the amount of air on hand .
And just like a four barrel over a single plane intake manifold , they don't pull an intake charge all at once . Each cylinder follow's the rotation . So the air ducting really only needs to refill the "box" at the rate and volume in which it is depleted .
Those slope lid manifolds have some thought put into them . The entrance has to be big enough to house the air valve . The cross section has to be big enough to both keep the column moving slow enough to where the first cylinders in line don't have to reach out and grab a fast moving target , turn it and fill the runner . As well be the conduit to support the back cylinders . The shape also keeps the air from tumbling as it moves to the back .
We have come a long way from the old "Ramchargers C/Altered intake ... >
And the state or the art stuff that my hero John Marcella builds today ...
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01-04-2018, 08:14 PM #212
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wtsjr66 liked this post
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01-04-2018, 08:29 PM #213Screaming And Flying!
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01-05-2018, 08:29 AM #214
Only with a broken reed ....
I went looking for a cfd program that could do pulsed flow, couldnt find one
However , I did whittle up a new "deck bridge" where I can check real world clearance's in multiple locations ...
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01-05-2018, 09:17 AM #215Bud Conner "Heathen" "Defending Our Constitution"
FOR ALL ENGINE APPLICATIONS
DRY Film Lubricant for Piston Skirts & Cranks + Thermal Barrier Ceramic Coatings for Piston Tops, Combustion Chambers, Valves etc !!
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noli liked this post
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01-06-2018, 08:06 AM #216
Notice die grinder throttle WFO ... and the cutter not spinning ...
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01-06-2018, 10:51 AM #217
Someone probably pulled his lanyard.
I CAN ALWAYS MAKE ANOTHER DOLLAR, BUT I CANNOT MAKE ANOTHER DAY
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01-06-2018, 01:24 PM #218
Compressor switch was on ... just too cold to spin the 1/4 turn handle to pipe air into the shop that day ... besides , it was lunch time ..
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NICE PAIR liked this post
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02-02-2018, 11:47 PM #219
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02-03-2018, 02:27 AM #220
.
Wow!
How did you make a 400HP?
.
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02-03-2018, 07:59 AM #221
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noli, mercracer2.5 liked this post
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02-03-2018, 01:44 PM #222Screaming And Flying!
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X rated motor porn at 400 ponies...yowza!
83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
Rebuild thread:
http://www.screamandfly.com/showthre...-it&highlight=
http://www.screamandfly.com/showthre...cs.&highlight=
Videos
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02-03-2018, 04:00 PM #223Scream And Fly VIP
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02-03-2018, 05:06 PM #224
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noli liked this post
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02-04-2018, 08:26 AM #225
I cannot and will not be held responsible for that ...
First , as an adolescent ... I have many thousands of miles on Yamaha brand motorcycles . So I have nothing but good things to say about their products .
Secondly , If I had anything to do with it , it would look something like this .... >
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