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Full Flat Undertray DIY

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Old 01-27-19, 12:58 AM
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Full Flat Undertray DIY

Recently.... I finished an full flat undertray DIY.
to maximize performance of RE-amemiya rear diffuser, it was designed to completely cover bottom of tranny and exhaust lines.
panels were made of aluminum 2.0mm sheet and placed a few NACA duct for cooling.
the yellow front undertray were self-made years ago for c-west aero.
see below pictures. ^^




Last edited by Jin-74; 01-27-19 at 05:42 PM.
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Old 01-27-19, 01:46 AM
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Nice work
Old 01-27-19, 07:32 AM
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Yes, very nice. Slotted holes and clean fit.
Was the factory tunnel bracing or anything else removed? What were the panels secured to? What hardware was used? Any noise/rattling?
Old 01-27-19, 10:46 AM
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Really nice work.
Does it feel any different on the road?
Old 01-27-19, 11:01 AM
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Bet you could make a killing selling those. You already have the hard part done. Now mass produce.
Old 01-27-19, 11:06 AM
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Very nice! That would be a REAL chore to make without a lift!

I've thought about doing something similar, great job there!

Dale
Old 01-27-19, 11:50 AM
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Now that's a flat bottom!
Old 01-27-19, 02:25 PM
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Damn, that's impressive. I like the NACA shift to cool the exhaust.

Vince
Old 01-27-19, 04:57 PM
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Wow, hadn't realized there was room for that deep of a venturi under the differential- that might do something at speed!
Old 01-27-19, 05:31 PM
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I made the brackets to hold the panel. and can't hear any noise.

Last edited by Jin-74; 01-27-19 at 05:34 PM.
Old 01-27-19, 08:32 PM
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This is really amazing.
Old 01-28-19, 12:38 AM
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Love this. Well done.
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Old 01-28-19, 11:43 AM
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WOW! This is awesome!

Old 01-28-19, 12:06 PM
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This looks amazing! Great work
You could probably even sell these.
Old 01-28-19, 12:57 PM
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...or better yet for you, mass produce templates and bracket instructions and sell those. No fuss or hassle of having to produce, package and deal with shipping or customers
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Old 01-28-19, 06:42 PM
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Originally Posted by RCCAZ 1
...or better yet for you, mass produce templates and bracket instructions and sell those. No fuss or hassle of having to produce, package and deal with shipping or customers
I would be in for that!

Jpr
Old 01-28-19, 07:04 PM
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Whoa! Thats perfect! What about the undertray braces. Did you have to remove them
?
Old 01-28-19, 11:57 PM
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Originally Posted by RCCAZ 1
...or better yet for you, mass produce templates and bracket instructions and sell those. No fuss or hassle of having to produce, package and deal with shipping or customers
​​​​​​
+1 on this!
Old 01-29-19, 04:00 AM
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Originally Posted by AlienHack
Whoa! Thats perfect! What about the undertray braces. Did you have to remove them
?
yep. the stock under-braces fully remains.
Old 01-29-19, 04:07 AM
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Originally Posted by RCCAZ 1
...or better yet for you, mass produce templates and bracket instructions and sell those. No fuss or hassle of having to produce, package and deal with shipping or customers
for online selling, I'm preparing packing and installation instructions.
maybe It will be available in Feb.
thanks~
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Old 01-29-19, 06:10 PM
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Yes! Please please make this happen. This will imensly help the fd
Old 01-29-19, 07:50 PM
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might be some variance with how the dp.. wastegate dump and exhaust hangs past these panels... but yeah nice work
Old 01-29-19, 11:25 PM
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That looks really clean! Well done, Jin-74!
Old 01-30-19, 12:51 AM
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Originally Posted by amp
might be some variance with how the dp.. wastegate dump and exhaust hangs past these panels... but yeah nice work
Personally I think this is exactly why I would prefer to purchase a template over a finished product .I'd rather modify a template and make the part fit my car exactly, vs modifying a finished part and it not looking/working perfectly.
Old 01-30-19, 01:37 AM
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Originally Posted by street-heat7
Personally I think this is exactly why I would prefer to purchase a template over a finished product .I'd rather modify a template and make the part fit my car exactly, vs modifying a finished part and it not looking/working perfectly.
Problem is that selling a template like that put a lot of faith in the community, as you are basically selling a very easily stealable product (paper).
Just take one guy to put it up at ebay for half the price to ruin the business for the original guy.

Tho, i would buy a template myself for the same reasons you mention.


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