Clocking | TracTuff

This page has been created to help customers understand the meaning of clocking. Its commonly misunderstood and has lead to parts being made that don't fit the customers needs. Please understand that there are no fixes or refunds for these mistakes! I'm under the impression that if you don't ask for an explanation... you understand.

All of my fill pots and swirl pots allow you to at least choose the outlet clocking from a drop down list. The list doesn't always represent all of the available options, rather only the commonly requested ones or only those that are allowed by a specific design. Remote mount options allow you to choose both inlet and outlet clocking through email.

Before I get into clocking, lets understand a few things. The inlet should always be the higher of the two connections. On products that are welded directly to a flange, the position of the inlet in relationship to the tank is controlled by the placement of the tank as well as vertical clearance to the cylinder heads outlet. In most cases, direct mount products sit over the block or transmission, affecting the overall height of the tank as well as where the inlet intersects the tank.

If the cylinder head outlet is 3.00" above the transmission, I only have 3.00" to place the inlet and the outlet, so if I'm using 1.25" tube, .625" of that will consume a portion of the 3.00" and leaves me with 2.375" to place the outlet. The whole 1.25" outlet tube must be placed below the weld of the inlet and above the weld of the base. This puts a distance of roughly .625" between inlet and outlet.

If the cylinder heads outlet sits higher it allows for more design flexibility as well as an improved effect by placing the inlet and outlet further apart. Clocking is less affected when you have more clearance between inlet and outlet; you actually only need to worry about external clearance issues... such as a throttle body, intake or charge pipe, shift cables, air box, etc.

So! How do you articulate the inlet or outlet position to me? Easy, we use a clock's hour hands! I always assume that the firewall is 12 o'clock and the front of the vehicle is 6 o'clock... so now that you have a starting point reference, tell me which position you want the outlet to face AS IF YOU WERE LOOKING DOWN ON THE PRODUCT FROM ABOVE. If you are dealing with a mid or rear engine application... it is up to you to communicate the bearing (the position or direction of one point with respect to another or to the compass).

The inlet in the image below is 9 o'clock (not 10 o'clock) and the outlet is 8 o'clock (not 7 o'clock). Make sense? How about the two small male accessory ports/ bungs? How about the radiator cap bungs overflow port? All stuff you can have control over.

If you don't see it... here is a shrunken pot on the same clock.

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