DIY underbody panels - Page 2 - MR2 Owners Club Message Board
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post #21 of 52 (permalink) Old September 7th, 2008, 14:12
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i walked away wile the page was loading, and glanced and saw that rear close up pic,

i came running back, looks very nice.
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post #22 of 52 (permalink) Old September 10th, 2008, 02:55
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Quote:
Originally Posted by kenchi
my rear diffuser, used 5053 aluminum .050".


wow this is nice
post #23 of 52 (permalink) Old September 22nd, 2008, 17:55
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do you really need those panels ?
I mean, are they really usefull ?
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post #24 of 52 (permalink) Old September 22nd, 2008, 20:12
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Yes, the underbody panels make a big difference in drag and front end lift, especially at 60+

rear diffusers are a little less noticable

Last edited by Levi; September 22nd, 2008 at 20:24.
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post #25 of 52 (permalink) Old September 22nd, 2008, 21:57
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ok thanks !
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post #26 of 52 (permalink) Old September 22nd, 2008, 22:48
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Quote:
Originally Posted by Levi
Yes, the underbody panels make a big difference in drag and front end lift, especially at 60+

rear diffusers are a little less noticable
i noticed it having less noise with the diffuser on.
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post #27 of 52 (permalink) Old September 23rd, 2008, 12:28
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Quote:
Originally Posted by kenchi
i noticed it having less noise with the diffuser on.
howd you make it kenchi?
i want to do the same for my MK2
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post #28 of 52 (permalink) Old September 24th, 2008, 11:16
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^ tom? is that your name? i hope i got that right.

i dont think your car will benefit much from a diffuser. it might benefit you more to cover up underneath the engine bay.

but either way, i made it using some 1/20" aluminum and bent it by hand. then i put the pieces together using rivets.
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post #29 of 52 (permalink) Old September 24th, 2008, 20:25
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close, my name is thomas but its all good.
i just think diffusers are bad ass.
jw how you made it. Does it benefit your car?
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post #30 of 52 (permalink) Old September 25th, 2008, 22:04
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from less noise coming into the engine bay, i suspect its probably lowering the amount of drag.
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post #31 of 52 (permalink) Old October 12th, 2008, 20:19
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Found a good link about underbody panels for mr2s
http://www.geocities.jp/crazy_shift/underpanel.html

same guy did a rear diffuser as well:
http://www.geocities.jp/crazy_shift/riaander.html

IMO, I'd cut holes under the radiator for air to flow upwards. I suspect he didn't because he made his own border style relocation kit for the radiator:
http://www.geocities.jp/crazy_shift/syujyutu.html

Also, I'd seal extend the rear diffuser towards the front of the car and seal off underneath the engine bay. Maybe including a few holes under important components (oil cooler, etc)

Last edited by Levi; October 12th, 2008 at 20:24.
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post #32 of 52 (permalink) Old October 12th, 2008, 20:53 Thread Starter
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I like it.. eh, when I have time, I will just make a front under body panel from fiberglass
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post #33 of 52 (permalink) Old October 15th, 2008, 13:47
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Did anyone find a supplier for abs plastic?
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post #34 of 52 (permalink) Old October 16th, 2008, 07:01
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You can get ABS from McMaster.com.
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post #35 of 52 (permalink) Old October 20th, 2008, 13:01
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Thanks for the link. What thickness do you guys recommend? I guess as thin as you can go without being too flimsy??
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post #36 of 52 (permalink) Old October 23rd, 2008, 10:15
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Would 1/8" be a good thickness to use?
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post #37 of 52 (permalink) Old October 23rd, 2008, 10:46
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1/8 would be fine but a little overkill IMO. I used .090 5053. If you used T6 I wouldn't be afraid to go with .062
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post #38 of 52 (permalink) Old October 23rd, 2008, 11:08
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I meant 1/8" abs plastic. Do you think 1/8 is overkill in plastic?
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post #39 of 52 (permalink) Old October 23rd, 2008, 11:14
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Quote:
Originally Posted by 94MR2
I meant 1/8" abs plastic. Do you think 1/8 is overkill in plastic?

I think it's overkill, I just ordered 3/32" from www.usplastic.com and now wished that I went with 1/16". It all depends on the span of your support mounts, if you have a larger gap to bridge then you need somthing like 3/32".
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post #40 of 52 (permalink) Old October 23rd, 2008, 11:20
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Was 1 sheet of 4' x 8' enough to do the whole underbody? How was the shipping for that?
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