hey guys

ive never done a port and i want to bridge my series 4.

where do i get templates?do i need them?

and will it pulse?

Racing Beat or Mazda Trix.



It will "Pulse"?



Yes. Rump Rump Rump and so on. If you do all of the irons, it will have no off idle torque. You will need a very fast idle just to get around. Bridgeing only the secondary (end irons) will keep it acting as stock until the revs are up and eliminates the Rump Rump stuff. You can always go back in and do the center iron on the next rebuild. But if you do them all, you may be unhappy for a long time. Some of the members do this work at reasonable prices if you just ship them the irons. It is very easy to do that way.



Full bridge porting makes the engine good from about 7,000 RPM to 9,800 RPM. There are other mods that should be done to operate in this area.





Lynn E. Hanover

I prefer the half-bridgeport (doing only the secondaries) for street cars. Have a peek at my website; you'll see what I do. Let me know if you have any questions.



By the way, what kind of car is this being planned for? What kind of EFI system will control it? Marching onwards to a bridgeport virtually demands the use of a standalone fuel injection system and not the use of the stock computer if it's a 2nd gen. 3rd gen you can get away with using the PowerFC.



B