More updated intercooler pictures Twin Turbo Lexus LS400 Stage II
In forced induction cooler air is greatly desired and our Lexus cars are no exception. Cooler air makes denser air and more air molecules per given volume. Without going into great details on intercooling, I would like to take you to a intercooling journey in my Twin Turbo Lexus LS400.
I have been trying to install an intercooler into my Lexus LS400 for a while now. I have tried to put in few other oem intercoolers like the Ford Powerstroker, Saab and some JDM cars. They all failed. One the biggest problems with intercooler in a Lexus LS400 is that room is so limited. Therefore, this article will focus on the first generation LS400. In front of the A/C cooler are two fans (later model have one fan). Removing those fans for intercooler would not be a good idea for the cooling of the A/C. This is out of the question for about 99% of LS400 owners. Removing one A/C fan does work, but the size of the intercooler would not worth the trouble. The only option would be right under the bumper frame. The intercooler will be house under the bumper and behind the bumper cover. The maximum intercooler size would 3.5″ x 8″ x 36″. This is small for my setup, but it fits nicely. I also take out my front license plate to increase air flow. Hopefully, cops would not give me any troubles driving without front license plate.
From non-intercooled to intercooled, I noticed the restriction. Best would be 3.5″ x 8″ x 36″. That is the maximum dimension of intercooler that will fit under the metal plate bumper. The intercooler’s workmanship pretty good for it price. Of course this is not HKS or Greddy, but its functional and the price is very affordable. For the production supercharger kit on the Lexus LS400. I plan to do some modifications on the intercooler to utilized all the available spaces. From my personal experience and many trials and errors. This is the cleanest, easiest and nicest setup that the first generation Lexus LS400 can get.
I took this newly received intercooler to a local muffler shop and asked them to make some custom pippings for me. The old setup was trashed and new pippings begin due to the intercooler configuration. Due to my setup, I drilled two 3″ holes into my wheel wells ( a plastic cover above the tire) and connected with T-Bolt clamps to ensure those connections not going to be apart with high boost. I also used three ply silicon turbo hoses along with flaring of pipes. The intercooler comes with two mounting plates. Those plates are in perfect position for mounting. I used two L metal brackets and welded them into the car frame. After mounting brackets are screw in, the intercooler is firmly anchor down.
The three option for intercooling that I explored during the process is the wheel wells. You can mount two custom made intercooler around 8″ x 6″ x 3″. They need to be mounted horizontally. This setup is very similar to the Procharger supercharger system for the Chevy Z28 or the Trans Am. Custom making those intercoolers would be a huge price to pay. Secondly, the two small intercoolers would not be much advantage over the one I have. The high cost would not justify this intercooling method in my opinion. Pictures below were take by Esteban Wu.
After installing this system. I found out this intercooler is too restrictive for my Lexus Twin Turbo V8 4.0 DOHC setup. How do I know? Well, my actuator vacuum line get its signal from the turbo and my boost gauge is from my intake manifold. Before intercooling, I was reading 8 psi. After the intercooling, I only see 4 psi and its at much high rpm. However, the 4 psi felt lots of power then before. Therefore, I lost 4 psi and that is about 80 rwhp. I would like to get a larger intercooler and remove my bumper beam.
Since I experienced the problems with the previous intercooler, I requested a high flow custom intercooler for my LS400. If you are interested in getting this Lexus LS400 Intercooler. The new specs are as following:
The above intercooler is custom made for your 1st generation Lexus LS400. If you have any questions about installing an intercooler in your Lexus LS400, please feel free to contact me.
Check out this Soarer FMIC Install video.Do you have any questions? If so, please head over to the forums to get a quick answer or share your experience!