Now With A New Teflon Coating!

Brandon Most

While freshening up up the valve cover gaskets (leaking) and vacuum hoses (dried and cracked). I decided to make some new teflon gaskets to help keep some heat out of intake manifold. While this isn’t a race car, i’ll take any extra HP/MPG i can get!

anyway …. here’s a couple pics of the process:

Add a few pieces of good quality double sided tape to it.
Stick your teflon to the bottom of your part and using a flush cut trim bit in your router cut the outside. Be careful setting the depth on curved parts, or you might be cutting your manifold on one side and undercutting on the other side!
With the outside done, drill holes in the center large enough for the bit to fit through.
Repeat the same process with the trim bit until you have the gasket almost done.
Before you peel it off of the your part make sure you mark your hole centers with a set of transfer punches.
Drill and deburr.
A finished piece.

I only had some thick (1/4″) material for the intake manifold, so as a consequence i had to machine the bolt hole (into a slot) in the brace that runs from the cylinder head to the upper plenum, other than that it worked great even with the stock hardware.

For the throttle body i used thinner 1/8″ material. It was important to keep the throttle body separated from the intake because i didn’t want to bypass the coolant from the throttle body. Of course as a “side effect” i got a round gasket for the throttle body as well!

Related posts

Leave a Comment