Stevenlee,
That plumbing has to be extensive. Does the water cooling eliminate the oil lubrication of the turbo bearings? I assume some sort of a y-pipe into the intake, one intake filter for both units, etc.! You will have to post some pictures of the final installed product as its not like you have a lot of space!
I am beginning to understand your comments on the practical application of this much hp on the street. I have no idea of my gearing (stock) but after - oh as long as 6-7 seconds of hard acceleration (two gears) I am already at the point of a serious ticket let alone a safety concern. I suspect that problem is magnified by an island. Because of some serious looks from law enforcement despite driving perfectly normal I had a friend do a couple of drive byes. Sounded like the last indy car event I attended!
Regarding the tuning I have downloaded the software but have had a wiring issue with the type of connector. For some reason it is not a USB connector and my laptop does not have that style of connector available. I have been following another thread concerning mapping and would like to learn more. I am surprised that you have a tuner come over from the mainland for yours. Not that I have ever done it but watching Cody do mine I did not see anything done I did not understand. He has located an adapter and will be educating me on the process and I am looking forward to it.
Incidentally the list of adders (that slippery slope we discussed) would not link, could you forward? I am interested in what brakes, calipers, etc. you used. I forgot to look what island you were on - share if your comfortable!
Charlie
Charlie,
The water cooled turbos do not replace the oil to the turbo bearings. My turbos have roller bearings for faster spooling. The water to the turbos helps bearing life and reduces, if not prevents, coking of the tubo bearings.
I did not use a Y adapter for the intake air, I have 2 individual K & N air filters that are tucked into the rears of the fenders.
I am using later model (1997?) OEM larger rotors and calipers that are slotted with Hawk HPS pads. I didn't want the extra weight of larger brakes since they would only be for bling and I wouldn't need them for my slow street driving at legal posted speeds.
Speaking of that, I can only give it maximun throttle for about 4 seconds before I would be be going illegally fast on any road on my island...and that's beginning from a dead stop.
To give you an idea of the complexity of the plumbing of 2 water cooled turbos, here's what I have:
-2 air filters and 2 intake pipes to the 2 turbos.
-2 outlet (compressed) air pipes to feed into the air-to-water intercooler.
-1 charge air pipe to go from the intercooler outlet to the throttle body.
-1 water hose to feed designated water to the intercooler.
-1 water hose to go from the intercooler to the 2 heat exchangers in front of the radiator.
-1 water hose to return water from the heat exchangers back to the intercooler water tank and pump.
-2 water hoses to feed engine water to the turbo housings.
-2 water return hoses from the turbos.
-1 oil feed hose from the oil pressure sender location to a "Y".
-2 oil feed hoses to the 2 turbos.
-2 oil drain hoses from the turbos to an accumulator tank.
-1 hose from the turbo oil accumulator tank to the return pump.
-1 vent hose from the oil accumulator tank to the oil pan.
-1 hose from the pump to return to the oil pan.
-2 separate exhaust pipes from the headers to the 2 turbos.
-2 separate exhaust systems for the 2 turbos.
-1 blow off valve pressure actuator hose.
-2 waste gate actuator hoses
...then there's the methanol tank, pump, vent and supply hoses, filter, pressure sensor, sprayer, etc...
...I almost forgot to mention the dual O2 sensors, EGT sensor, 6 gauges including AEM serial gauge, etc, etc, etc.
To make it more challenging, the NSX has limited space and I wanted to build my system to look like it was designed and built by Honda.
After spending over 1,000 hours over 4-5 years designing and building the many mods on my car it is almost done and looks like amazingly stock like most NSX's.