I aint never ported heads before. But I wanna try and learn on a set of D2TE-AA Heads that I picked up off Ebay.

I noticed on the exhaust side, there are bumps/lumps on the bottom part of the port, in the corners that continue around into the chamber. Can this area be removed with a die grinder? If so, do I make a good even flow thru this area and what is the approximate depth of the material I should not exceed? On the intake side there is a bump on each head that looks to be the outter casting of a passge for oil for valvetrain commonents. Should I leave this area alone or take er down? If so, how much? Finally, on all the ports (Intake & Exhaust), they all look pretty rough. What do you recommend to clean them up with and make them more smooth?

Thanks,
Mike

 

As far as the bummps go you would have to know from that years casting if there was a passage under it that you should be aware of. You might be able to get some help googleing that head number with "casting", or "porting".
Other than that the intake side should not be nice and smooth. The roughed up casting is just fine as it helps to make turbulance and mix the A/F. You can remove any casting marks or seams though. You also should not port match the intake side. The runner from the maifold should be smaller than the head port. The edge that it creates helps to stop reversion, the gases going backward up the manifold. On the exhaust you want a smooth and polished finish. The most improtant part is the top of the port where the flow makes the sharpest turn. You want to make as straight of a shot as you can to the header port. Beware however as there is not usually a whole lot there to remove safely. You can port match exhaust but the most important thing is smooth and polished. You can also do some bowl blending under the valve. Look at this for some ideas on materials and doing the work but again don't match the intake regardless of what they say.http://www.sa-motorsports.com/diyport.shtm

 

Mike, leave those bumps in the floor of the exhaust ports alone. A. there is not alot of flow to be gained on the floors and inside radius anyway and B. there is water under there. the bulge on the floor of the exhaust is ther to give the water jacket enough room around the spark plug. Grind though it and you just created a junk head. On the intakes, 2 of the ports have lump under where the oil goes into the rockershaft stand. Go ahead and grind those ports out to square like the others. You'll then have a small hole in the roof of those two ports, but that is okay. You just have to remember to use a little bit of sealer on the threads of the bolt that goes into those holes when you assemble. I did mine, no trouble. DF

 

I fully agree with everything everyone else said.

You DO have a bump in the TOP of the exhaust port though, right? That's the air injection bosses, which - if you don't have Thermactor, and they are not drilled out, are useless and are in the way - those can go, but be careful not to remove too much, just blend them in.

Ditto on the bowl blending in the exhaust. Ditto on not removing that bump on the floor of the exhaust - that's the water passage around the plug.

 

I took the blank (heads weren't set up for air injection) bump in the roof of the exhaust runner completely out and smooth with the rest of the roof. No problems.