I mounted some fans to cool the charge cooler.
They are controlled by the boost controller. I have them set to turn on at >2K RPM and 1 or more PSI. I still need to do the hood scoop to get some cool air to them.
I mounted some fans to cool the charge cooler.
They are controlled by the boost controller. I have them set to turn on at >2K RPM and 1 or more PSI. I still need to do the hood scoop to get some cool air to them.
Stock RAV4 exhaust has now been replaced. I used 2-1/4" mandrel bends. A friend gave me a 1 in 2 out 2-1/4" muffler. He bought a muffler shop's tools and inventory. Hey, it was on sale. I bought some straight tubing and used flanges from a local muffler shop, and 3 mandrel J bends from Amazon. So, I have less than a bill in the complete exhaust.
Getting it over the cross member is a biatch. Every Toyota I've looked at has some tiny tubing there crushed almost flat. I suppose that's so that it doesn't hit the cross member when the motor mounts inevitably go bad. My motor mounts are solid urethane, so I don't have to worry about that as much. It is also interesting to note that Toyota uses double wall tubing up to the cat. Totally over built, in Toyota fashion.
I used some stainless tubing I had laying around for the exhaust tips.
Test drove it under boost yesterday. I think the exhaust made a significant improvement, especially on top. That stock exhaust was really bottlenecking it at 5K and up.
We need to hear this thing.
Stuck on You.
The need for something like this in my life is heavy
I am getting ready to build one for one of my customers. I build a gen4 3SGTE engine with eagle rods and Weisco pistons with all ARP hardware, 1mm oversized Ferrera valves, GSC cams and springs, poted head and 90mm throttle body. Also have an ST205 AWD trans and ST205 rear torsen diff and a twin disc clutch. To top it off will be a ported and custom built GT28 ball bearing turbo and a Greddy front mount intercooler. We are looking for 450 awhp. Maybe I'll start my own thread on it in a few weeks
Dr. Hess said:I mounted some fans to cool the charge cooler.
They are controlled by the boost controller. I have them set to turn on at >2K RPM and 1 or more PSI. I still need to do the hood scoop to get some cool air to them.
Just curious as to why you set it up this way? Why not run the fans while it is sitting still and have then shut off at a curtain speed when air is being pushed through the cooler by the vehicle moving? Heat soak in top mount coolers occur as while the vehicle is moving slowly and the rising engine heat gets the cooler hot.
Dunno, Erik. I just didn't think of it that way. I was thinking that heat soak would occur while the hot turbo air was blowing through it more so than heat coming off the motor. I still need to do something about the hood scoop. As in make one.
The one you're building sounds pretty stout. What ECU are you going to use on that? If you use the ST205 transmission, you have to figure out how to make the speedo work, if you're putting this in a RAV4. They are different. From my research, the ST205 transmission, I have one sitting under my work bench, does not have a speedo take off point. The speedo picked up a signal off the wheel sensor. That was a major reason I stuck with the stock RAV4 transmission instead of using the ST205 one. I had enough time in this swap, like a year, and I didn't need to blow another month or two messing with the transmission to get a speedo signal.
Well the ABS is going away so I may pull the Speedo pickup from the wheel speed sensor. We will be running it on an MS3
The problem you'll have then is how many pulses of wheel sensor relates to how many pulses of the original speedo sensor. There's a web page out there somewhere where the guy takes the ST205 transmission apart and adds the right piece to it so that it will work with the RAV4 speedo. I think it's part of the differential. Not a small job. The other option would be to rig up some kind of adjustable pulse modulator to feed the speedo based on the wheel sensor pulses. I thought about it, but again, it would be a month of R&D and I just didn't want to berkeley with it.
I have to see how many pulses the rav4 Speedo needs per revolution. I really haven't been too worried about that. I did a JDM NA supra with a JDM twin turbo 2jz out of an Aristo. The supra trans had a dedicated sensor for the speedometer where the Aristo uses data sent through the data lines to the gauge cluster for the speedometer and has no sensor that would work for the speedometer in the supra. Turns out that the supra uses a 12 tooth wheel on the output shaft for 12 pulses per driveshaft revolution. The rear diff is a 4:10 ratio and the wheel speed sensor on a supra are 48 teeth so it worked perfectly. The car was a non abs car from the factory so I just got a LF steering knuckle and hub off of a Lexus SC300 and swappd it out. I have a really good machinist at my disposal so I should be able to make something work
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