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Anywho... I played with different things to see their effect on drag and lift of the car. First I added the wheels I actually have (TE37's and mounted tires). I then added a tire deflector, you know, these plastic things you see hanging in front of the tires of most cars nowadays. I also added a flat floor all the way to a conservative diffuser in the rear. Overall drag coefficient decreased to .28 (baseline/stock was .31). Lift decreased to approximately 0 ( baseline was around 100 pounds).
The front tires are still kicking the flow out. The rear wheel definitely does sticking out that much lol
Viewing from beneath, the diffuser ain't much. basic curve-up with two walls on the side. Turbulence is definitely leaking from the rear-wheel area. Maybe strakes can help with that.
Wake from behind the car...
That’s awesome! Are you paying someone to cfd model for you or doing this yourself? I’d love to get some personalized feedback on my sc to see if I’m overthinking things, or if I’m headed in the right direction.
That’s awesome! Are you paying someone to cfd model for you or doing this yourself? I’d love to get some personalized feedback on my sc to see if I’m overthinking things, or if I’m headed in the right direction.
Thank you.
I do everything on this car, certainly everything I'm showing here.
What are you building the car for and what do you think you're "over-thinking"?
I don't know why I hadn't seen this thread prior. It is incredible. Can't wait to see the end result. You've inspired me to at least get moving on the project SC400 my son was working on before he passed away. One of the things he was dealing with was the fitting of a super charger under the hood. I see you built a custom hood. Nice!
He had taken his '95 up to the local racing area, but was very disappointed in the top-end speed of the stock 1UZ.
I don't know why I hadn't seen this thread prior. It is incredible. Can't wait to see the end result. You've inspired me to at least get moving on the project SC400 my son was working on before he passed away. One of the things he was dealing with was the fitting of a super charger under the hood. I see you built a custom hood. Nice!
He had taken his '95 up to the local racing area, but was very disappointed in the top-end speed of the stock 1UZ.
I'm very sorry for your loss, and thank you for the kind words.
This looks like Streets of Willow track. I've been there a couple of times. Had a lot of fun with their clockwise configuration.
thank you - it has been tough, but that's partially why i bought my own SC400.
Yes, he was at Willow Springs, where he took a two-day race training course. I hope to get up there someday myself in the '93 SC400. You've inspired me to check into the supercharger. I found a video of a guy who did just this.
thank you - it has been tough, but that's partially why i bought my own SC400.
Yes, he was at Willow Springs, where he took a two-day race training course. I hope to get up there someday myself in the '93 SC400. You've inspired me to check into the supercharger. I found a video of a guy who did just this.
I can only imagine.
There are a few guys that boosted their V8. It's not as popular of a mod for a 2jz-equipped platform but they're around. Aside from V8 related questions (I don't know much about the UZ) lol, you're welcome to ask me anything. Good Luck.
Well, I want to see more of your progress! This is cool, as I heard it from him often about how little info was out there for the 1UZ supercharge. He even bought the '93 because it has thicker rods than his '95. I read that also somewhere on this site.
IT IS CFD TUESDAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAYYYYYYYYYYYYY
Following up on our discussion on best fender venting techniques and how it does when combined with other aero mods.I combined the vents with tire shields. Nothing optimal but just wanted to see the effects from both. The louvers weren't aggressive enough as they were only 1/4 high. Also it seems that louvers aligned along the fender are NOT as effective. They need to be aligned with the flow as you can see below.
Also, the flow from the fenders creeps along the car all the way down to rear wheel
Just for giggles... The car is at 71 pounds of negative lift (downforce)
Last edited by madmax98; Mar 24, 2021 at 12:01 PM.
This looks great to me, would love to have louvers on my fenders but not on my hood. Reminds me of the Porsche race cars I have seen with the louvers on top of the front fenders. Dodge and Plymouth both ran reverse scoops on top of their front fenders to exit the air trapped in the fender wells on the Daytona and the Super Bird. These were the cars with the sky high wings and the aero dynamic front ends. Wish I had bought one back then.
I kinda posted in a hurry, but there were a few things I noticed.
The louvers "sort of" worked. If you look below: the louvers would have to be 0.5-1.0" high. Also they need to be aligned with the streamline I pointed out. i.e. angled relative to the fender. It doesn't seem like the fender vents a lot in the presence of the tire shield!
This looks great to me, would love to have louvers on my fenders but not on my hood. Reminds me of the Porsche race cars I have seen with the louvers on top of the front fenders. Dodge and Plymouth both ran reverse scoops on top of their front fenders to exit the air trapped in the fender wells on the Daytona and the Super Bird. These were the cars with the sky high wings and the aero dynamic front ends. Wish I had bought one back then.
Max,
Just came in from the yard headed to grandson's ball game. You can pull up pictures of the Super Bird and the Daytona on Google. Look for the vent on the top of each front fender. They are an air scoop turned around backwards with a hole underneath in the center of the fender to allow the trapped air from the fender well to vent. The same as your outline with the louvers on the front fenders of the SC. Got to grab a shower now but will be back with a picture of louvers on the top of fenders of Porsche race cars.
Max,
Just got back from the game and we won. Go to Google and put in Porsche racing cars and enlarge the very first one you see on the top left, notice the louvers on the top of the fenders.
Bill
