Intake Rules Revision

[SOseth]

There has been a revision to the proposed intake manifolds rules that everyone should made aware of. I have copied the entire passage from Fastrack and added the addition in red. Everyone should read this and let the club know where you stand with this.

SteveO

Item 1. Effective 4/1/09: Change FV section 9.1.1.C.5.D.20 as follows:
US imported, VW Type 1, 1200 sedan manifold must be used. The manifold heat riser tube and heat sink shall be removed. Removal of metal from the interior of the intake manifold and the interior rust-proofed is permitted provided that the following dimensions are not exceeded.

a. Down Tube: The down tube shall be measured at two different locations within an area between .500” and 2.00” above the horizontal manifold tube. Each measurement shall be taken four times, rotating around the circumference of the tube, and averaged. Averaged down tube dimension shall not exceed 1.140 inches O.D. Removing material from the outside of the manifold to achieve the legal dimension is not permitted. Removal of the manifold down tube from the horizontal tube is prohibited. The original factory furnace bronze attaching process and original factory bronze repair material MAY be visible, inside and outside the
manifold.

b. Horizontal Tube: The horizontal tube shall be measured at four different locations on each side of the down tube. The area to be measured on each side of the down tube is defined as being between the bend and a point that is 1.500” from the center of the down tube connection. Each measurement will be taken four (4) times, rotating around the circumference of the tube, and averaged. Averaged horizontal tube dimension shall not exceed 0.994 inches O.D. In addition, the maximum OD of the manifold measured where the tube inserts into the two head flanges, and just above any repair material that has been added, is 1.050 inches. Removing material from the outside of the manifold to achieve the legal dimension is not permitted.

c. The finished, race prepared, manifold shall not weigh less than 24 ounces. Intake manifolds may be repaired. Repaired manifolds shall start at 24 ounces BEFORE repair. The addition of excessive material to achieve the minimum weight is not permitted.

d. All exterior surfaces shall be in original condition. Bead blasting is permitted for cleaning only. Manifolds must remain unpainted with color but may have a thin, transparent coat of rust proofing material or clear coat type material applied. Removing material from the outside of the manifold to achieve the legal dimension is not permitted.

e. Matching of manifold flanges (to the ports) is permitted. Seal rings or “gaskets” of any type are acceptable as long as the bottom of the manifold flange is not raised above the cylinder head casting around the port opening. Removal of the manifold flanges that connect the manifold to the cylinder head is prohibited. Factory “VW” casting marks surrounded by a circle and VW casting numbers shall be visible on the bottom side of the flanges, closest to the head. No repair material of any type shall be visible or cover these markings on the bottom of the flanges. Factory furnace Bronze and manifold repair material may be visible where the horizontal tube enters the top of the flange. The exterior dimensions of these flanges must not exceed 2.990” x 1.360”.

[hardingfv32-1]

Steve

This is the correct way to control the use of oversize flanges.

My I assume that this new measurement is controlled by the "measure in four places and average" sentence? If so, should the word "average" be added?

Brian Harding
Monster Manies
hardingfv32@verizon.net
310 455-2747