[Spridgets] Intake Manifolds

[Bill Masquelier]

Sounds to me like he was trying to make an "anti-reversion" manifold (normally
used in 2-stroke intakes or 4 stroke exhausts to prevent backflow) but in a
4-stroke intake??? I don't know.
Bill

> Date: Sat, 10 Jan 2009 10:19:03 -0500
> To: spridgets at autox.team.net
> From: thcollin at mtu.edu
> Subject: [Spridgets] Intake Manifolds
>
> There are currently at least 2 intake manifolds for sale on eBay
> (items 310114374470 and 280300719227, hereafter referred to as #1 and
> #2). #1 is listed as part # 12G1450 while #2 is listed as 12G583. #2
> is for an early Spridget and #1 is for a later Spridget.
>
> If you look at the pic of #2 you can clearly see that the intake
> runner on the bakelite block side is "radiused" or chamfered from
> 1.25" out to probably 1.5". #1 has it too, but the pic isn't as good.
> Why is that chamfer there? The bakelite blocks I have seen are a
> constant 1.25" in diameter. It seems to me that when assembled, there
> is a discontinuity at the point the bakelite meets the manifold - two
> different diameters.
>
> I have a 12G1451 with the same chamfer. A PO took a rat tail file to
> the bakelite spacers to try and "port match" the diameters. This
> makes no sense since that just puts a wide spot between the bakelite
> and the intake manifold.
>
> Please explain why the chamfer is on these manifolds. My 1098
> manifold has no chamfer.
>
> Tim Collins
> http://www.flickr.com/photos/12702006@N07/
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