Automotive Aerodynamics Mini-Series Ep. 3: Toyota MR2 (SW20)
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- Опубликовано: 11 сен 2024
- In this short episode we look at the aerodynamics of the Toyota MR2 SW20 and determine the effectiveness of the rear OEM spoiler. The experimental method used is hydrogen bubble visualization. Shout out to Wayne Hsu for performing the experiments.
More at www.GraysGarage.ca
thank you! sw20 owner here. much appreciation for the video.
there were 2 engine lids offered in Japan. sexy style rear engine lid and the ask sports rear engine lid. both alter the notch back shape into a fastback shape. these lids greatly reduced the turbulence between the rear window and trunk area. it produced more down force yet increased the ventilation from under the engine bay out through the fast back lid(the lid is vented). the later ask sports engine lid I reproduce here in north america. for the enthusiasts out in Europe, a company called CarBen fibre creations reproduces them in the u.k. thumbs up and I enjoyed the video
where could we find your reproductions?
Hi GraysGarage,
First of all, thank you very much for this amazing content. I was wondering what do you think the effects of adding an f40 style rear lid will be?
WIll it help with the notchback separation ?
Thank you in advance
Thanks for the vids. Always liked the 2nd gen Mr2's. Kinda knew the aero wasn't all that great on them due to the rear design. But always nice to have a reference vid.
Can't wait for the FD vid!
Love these videos
Please make more videos on the wrx STI bugeye and the effects of adding wings, vortex generators and the like
I really appreciate your effort to educate public.......Your are like A H Shapiro.
Love to see a Toyota Eagle Mk III visualization! I am a huge GTP fan.
Nice, I dlike to see som hot hatches from 2000s like Golf GTI, Peugeot 206 RC or Honda Civic
Did the model have the engine compartment open or a pass through vent for the air to move through? I have been told that air moves from under the car up through the engine lid.if the model did not have this I wonder how that would affect the rear wing?
Great video, thank you.
I'd love to see the difference in aerodynamic properties of a foxbody mustang. A coupe, VS a hatch back and the difference between the GT "wing" and LX spoiler on the hatchbacks.
the depression over the engine lid is to suck air from the engine bay by the sude vent and under the car
I love your videos! Do you think you will be doing a Miata in the future? I have a 3d solidworks model of an NA miata, it would be interesting to see how solidworks CFD compares to your tests.
+R Theory Motorsports send me an email. I currently have access to CFD, we could try and work something out.
+GraysGarage What is your email? I tried finding your email on your website but I couldn't find it.
I love the MR2s, do you think a front lip, side skirts, and rear lower diffuser would help with this car? On mine it has a single outlet exhaust (not the huge 2 branch one) and the grate-thing at the rear bottom is cut off and I will put in a lower diffuser. I think a front lip is supposed to help with reducing flow under the car to improve downforce. For that whirlwind above the engine lid, that is exactly what I thought. When driving I can sometimes see pine needles levitating in place or whirling around in that area.
I believ vented, plexi covers are available for the buttress. All that you mentioned will help, but eliminating the buttress would be the biggest improvement. Also try a flush tail extension like pro mod drag cars. Rubber chin dam is also worth a try.
Front lips encourage air to hit the radiator instead of tumbing under the chassis -- a good thing, and down force to boot. But it needs to be held in place very securely. To a large extent it can also do the job of the flat splitter. The splitter job is help air quickly find its path, without hesitation on the chin.
great work ! can you please do the porsche 962, lotus 78 or the mclaren honda mp4/5 to see how they compare to norml street cars. it would be interesting to see how these innovating cars worked (given that they were the first of their kind using ground effect)
Thanks for this video! :)
Very interesting findings. What is your opinion/view if the mr2 turbos intercooler is moved from inside the engine bay (side mount) to mounted under the trunk area (without sitting the trunk floor) do you think there will be sufficient air flow for proper cooling? Reason i am asking is you can run a bigger intercooler due to the area under the trunk. Great video!
What about adding a Gt wing? I’m assuming from these experiments a a wing needs to be at least level with the roof to be effective
Hi Gray, been looking at your videos and found them very interesting, the reason i have replied here is because of the knotch back on the MR2 which is similar to my vauxhall vx220 (lotus based car ) also called a opel speedster (2002). Im really with traction at the rear of the car i would like to increase the rear end DF or reduce the lift, would a coupe lotus exige style rear engine cover help, im also intrested in diffusers as the under side the car is flat and could i create downforce from under the car with a wing under the diffuser ?? Hope you have time to maybe answer some of the questions
hi,
would you know if a racing wing (roofline height) has any effect on rear wake or does it simply effect the high speed region?
thanks
damn, would love to see this with the rev5 spoiler since I'm about to get one for my Two :/
Would adding a gurney flap on the OEM spoiler help?
Can you please do a video on the 3rd gen Toyota MR2 Spyder? Thanks!!
Seeing as you are a Toyota enthusiast any chance on doing more with the sw20 or Aw11? I can provide the models
What about the roof spoiler?
This is using a rev3 rear spoiler -- any difference with using a rev5 one ?
Plus the combat spoiler's adjustable so I wonder if it made a bigger difference
Hmm still prefer the look of my car with no spoiler. I will take my bad aero and live with it :D
I agree. That's what I did with mine. I miss that car.
there were 2 engine lids offered in Japan. sexy style rear engine lid and the ask sports rear engine lid. both alter the notch back shape into a fastback shape. these lids greatly reduced the turbulence between the rear window and trunk area. it produced more down force yet increased the ventilation from under the engine bay out through the fast back lid(the lid is vented). the later ask sports engine lid I reproduce here in north america. for the enthusiasts out in Europe, a company called CarBen fibre creations reproduces them in the u.k. thumbs up and I enjoyed the video