Originally Posted by Ranger Smith
What is that process called that pushes abrasive compound through the ports to polish and enlarge them? If that is cheap it may be worth doing since you have the heads off anyway.
Originally Posted by Blhde
Porting is normally done with a hand held grinder.
Abrasive compound is used to lap the valves into the valve seats.
Never heard of using compound to port heads.
Ranger Smith is correct, there is a process where you push through the port a thick mixture of abrasive material and it smooth things out, how much it will take out as enlargement of the port I am not sure but there was a process.
The old tired and true method of porting heads with a grinder is an art not something just anyone can get right, anyone can do it but will they can hurt more than help.
Porting heads may help some but the polishing is not needed on a street engine, actually what happens is the ports get too smooth and the air/gas doesn’t move around enough and loses the mixture, gas and air separate and doesn’t give you as much power. You lose power in the long run unless the engine is turning higher rpms.
My 2 cents, keep them stock unless you have a reason for the porting/polishing.
4x4, 5sp, Std Cab, Stepside, E4 Red
4” Lift - Coil-Overs, 6” SkyJacker Leafs - No Blocks (Mistake)
31 Spline FX4 Rear Axle, 4.56s and OX Locker, Hurst Shifter w/Optional Stick and "Made by Grev" alignment adapter