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Before and after dyno sheets would be nice to see. I would think you would need some way of grinding all the ports and such the same so the flow numbers would be somewhat uniform. The first head I did I spend about 40 hours on, taking a little at a time and trying to do the same amount to...

Im leaving the divider alone, it doesnt need to be pointed, its counter productive and if done wrong could cause negative turbulence. If TRD doesnt want the divider touched, im not touching it. I dont touch the valve guides, im following spec from the TRD bible, the same applies here. the...

What i use is a rotozip - it looks like a drill bit, but has flared ends to cut metal to remove the casting flash, I use this bit to hit the entire head first as it knocks most of the big stuff right off, but i dont use it to cut anything. I usually go thru 1 bit per head they are $15 for a pack...

Im not building a NA, however when it comes to turbos the head modifications are similar, have a study at my photos if you like. I believe i have reached the potential with the 12 hours of port work I have done to the head. This is head #4 for me, ive done a 5mge, a 4age and a 5sfe. I stole some...

Im referring to the aluminum dust from the sandpaper. But anyways, thanks for the break off. Im still studying my little ass off.

im not dissing NPR pistons or any of you guys that have them, but ive never heard of them, by the sounds of it, they are a major piston manufacturer and they make a good product. Personally I would go with the probe or JE slugs - they are proven, and way lighter than stock anyways, and if you...

Who cares its a little dimple, it will affect your compression ratio .001 percent.

The head isnt perfect, the intake angle of attack is less than desirable, but can be compared to the bigport 4age head. And from the factory there is massive valve shrouding and lots of excess material to be removed. However it is very workable and you can find some serious gains. I think you...

Nice numbers from that 6m Tanya, keep up the hard work!

The new red - As long as the top of your block is still straight, then i think you are on the right track with the wider thicker gasket. However, you have to realize that if the head was already overheated and warped and then milled then the top of your block is still warped. You are looking...

So if you went for the 1.2mm head gasket, you are increasing your compression ratio, what effect would that have on our compression numbers? Obviously it will go up, but how much, and is that going to increase detonation? I believe the engine efficiency goes up with increased comp., but the...

great info, there are alot of supra owners out there who think that if the head is warped they can just have the head machined. but they always forget that the top of the head is still bent, and will put a great force on the cams. Ive seen quite a few broken camshafts in my day due to this...

As everyone above has mentioned, 600 grit works well to prepare the surface for the next gasket, just be sure to grab as much dust as you can. I have done this on a 4age, with no problems after. even if you miss a little bit, the aluminum dust wont kill the engine. Just be sure to clean...

Has anyone ceramic coated their headers as well as the turbine housing and noticed a performance increase?...I am reading these website and many of them are claiming performance from ceramic coating due to the ceramic material keeping the heat inside the pipe. I will be doing this just to keep...

Well thats great 3" balloons! Dual layer carbon tubes will become a reality soon enough! http://www.balloonsfast.com/260Qmodeling.html?gclid=CO-VmMH07poCFQkzawodtXFVBA

jet jock you are the one who got me in this in the first place, i was simply stating the fact there may be a difference between the US ECU and JDM ECU. Frankly I could care less about the EGR its a worthless piece of emissions crap anyway I dont fool with it cause i wanna keep my shit street...

Am I really wrong or did I call you out Jet Jock? The person who never gets called out because he is the one doing the calling, then please explain to me exactly how the EGR system works. And what is its intended purpose, and why when removed the vehicle has more power and gets less MPG. I...

Sorry Ne is engine revolution sensor, it was off the top of my head. I mention nothing about lack of EGR resulting in better emissions, if you want this information do the research. All emissions equipment improves emissions. Actually EGR has partial vacuum at idle (EGR is not Recirculated...

because the air volume that the engine needs to stay running, the EGR is circulating exhaust wastegas with no oxygen content. With a jap engine and lack of egr, the engine is still breathing X amount of oxygen air at 1000 RPM, vs a US engine is breathing Y amount of oxygen air + EGR amount...

Ya, they are the animal making clown balloons. You want to be sure to stretch them out a ton, that way they will blow up a little larger than normal, because i think the widest I have gotten them to blow up was 2 inches - but its a strait shot meaning no bends/max velocity, and the tubes can be...