Porting Heads

[joey b]

I would be interested in porting the intakes of my heads, however I do not want to tear it all down. Is it possible and/or safe to port or at least polish them up with the heads attached? I have a nice dremel or is that extremely risky. By using the dremel on the intake will I be able to reach far enough in to make a difference?

[LQ1]

RE: Porting Heads

I wouldnt do that on the car at all, nor use a dremel. The dremel would take forever, and you wouldnt really get any good angles or do a very good job with the heads on the motor in the car. You dont want to polish your intake ports either.

[Guest]

RE: Porting Heads

to really get a good port job on the intakes and heads you could try this.

Start the car, make sure it is warmed up real good. Make sure the oil is up to operating temp. This takes about 15 minutes of idling or about 10 minutes of driving.

When this is done bring the rpms up to about 3500 rpm. This will help create the vacuum needed. Probably need a helper for this to hold the engine at 3500 or find something to hold the peddle.

Next take about 5 pounds of sand(this can be purchased at craft stores. Be sure to get the white sand however) and start to poor it into the intake through the throttle body.

You dont' want to poor it too fast. Just at a steady stream. It would be good if you could fab up some sort of device to allow the sand to slowly yet steadily get sucked into the engine through the tb.

This process is sort of like extrude honing. The sand(white) is very fine and going through the intake at roughly 3500 engien speed allows the sand to follow the air stream and take out any imperfections and mismatches in the heads and intakes. It gasket matches and ports at the same time.

For greater gains you could use more then 5 lbs of sand. I never found this necessary though. 5 lbs was more then enough for me and I could tell a difference immediately.

Good luck.

[95naSTA]

Re: RE: Porting Heads

to really get a good port job on the intakes and heads you could try this.

Start the car, make sure it is warmed up real good. Make sure the oil is up to operating temp. This takes about 15 minutes of idling or about 10 minutes of driving.

When this is done bring the rpms up to about 3500 rpm. This will help create the vacuum needed. Probably need a helper for this to hold the engine at 3500 or find something to hold the peddle.

Next take about 5 pounds of sand(this can be purchased at craft stores. Be sure to get the white sand however) and start to poor it into the intake through the throttle body.

You dont' want to poor it too fast. Just at a steady stream. It would be good if you could fab up some sort of device to allow the sand to slowly yet steadily get sucked into the engine through the tb.

This process is sort of like extrude honing. The sand(white) is very fine and going through the intake at roughly 3500 engien speed allows the sand to follow the air stream and take out any imperfections and mismatches in the heads and intakes. It gasket matches and ports at the same time.

For greater gains you could use more then 5 lbs of sand. I never found this necessary though. 5 lbs was more then enough for me and I could tell a difference immediately.

Good luck.

HAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAHAAHAHA!!!!!!

[Lyle's GTP]

Re: Porting Heads

I would be interested in porting the intakes of my heads, however I do not want to tear it all down. Is it possible and/or safe to port or at least polish them up with the heads attached? I have a nice dremel or is that extremely risky. By using the dremel on the intake will I be able to reach far enough in to make a difference?

Hey dude. Let's get serious here. NEVER, EVER EVER TRY THAT!!!! Ok, one little microscopic peice of debris, (sand, aluminum, steel, stc.) Is enough to completely fuck your engine. So, never consider doing ANY grinding, filing, polishing or using compressed air anywhere near an open engine. Not to mention, pouring 5 pounds of sand into your throttle body, whlie the engine is running. LOL

Porting and polishing your heads WILL require complete removal of the cylinder heads. The heads WILL also have to be disassembled completely (minus frost plugs). Then you can do the port work. When you are done the port work on the heads. ALL of the parts WILL have to be maticulasly cleaned before reassembly, and the valve seals should be replaced.

Now as for the actual work. You can use a Dremel if that is all you have. But as said above, it will take alot longer than with an air die grinder,

Honestly though, No offense meant here. Given your original idea, I don't think you have the appropriate mechanical knowledge or experience, to properly accomplish a task of this magnitude. If I were you, I would contact Ben (sappyse107). He does some excellent (the best) port work on these heads, at a great price too (cheapest). He would be more than happy to help you out.

Good Luck.

Lyle