426 Intake Manifold Spacer
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=29403
Printed Date: 25 Oct 2025 at 12:10am
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Topic: 426 Intake Manifold Spacer
Posted By: Mark D.
Subject: 426 Intake Manifold Spacer
Date Posted: 19 Apr 2011 at 7:47pm
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For Sale: 1" Aluminum Spacer between the Intake Manifold and Head on a AC 426. Increases the air to number 1 and 6 cylinders therefore increasing hp. Asking $100.00 Call Mark at 989-574-8227 ------------- Miss Behavin - D21 Super Farm Xcessive Tinkering - 190 XT Hot Farm Puller Watch on YouTube - http://www.youtube.com/watch?v=J2TX1Af7aoA |
Replies:
Posted By: Orange Blood
Date Posted: 19 Apr 2011 at 7:52pm
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Ok, I'l bite!
How does increasing the volume of the intake evenly across all cylinders provide more air to only two?
I am being serious, I don't understand the principles involved???
Thanks,
Anthony ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: Mark D.
Date Posted: 19 Apr 2011 at 8:45pm
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SOLD!!
Because the air inlet to the stock manifold is centrally located, air moves more freely into the center cylinders. Air has a harder time getting to the farther away cylinders therefore reducing hp. air + fuel = power ------------- Miss Behavin - D21 Super Farm Xcessive Tinkering - 190 XT Hot Farm Puller Watch on YouTube - http://www.youtube.com/watch?v=J2TX1Af7aoA |
Posted By: Orange Blood
Date Posted: 19 Apr 2011 at 10:18pm
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I guess I don't fully understand, since the manifold is under pressure, maybe the restriction from the narrower ends is what you are trying to say! ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: TexasAllis
Date Posted: 20 Apr 2011 at 6:43am
The further you move from the source the less pressure you have even with the short distance in a manifold. Another issue is the air has more time and distance to build heat reducing pressure (density) even more.
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Orange Blood wrote:Posted By: Steve M C/IL
Date Posted: 20 Apr 2011 at 1:38pm
| I'd have to see the data that supports the spacer idea on a turboed engine.Theory may not be reality. |
Posted By: ACFarmer
Date Posted: 20 Apr 2011 at 3:41pm
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It opens up the intake more so number 1 and 6 have a larger space to get air into them instead of pushing it through a little space it doubles it. Make sense? ------------- Making a living farming with and working on Allis Equipment |