QKSLVRZ

I really liked how my 02 Z06 sang when it was spun up.

STANG KILLA SS

STANG KILLA SS

383

I am still working with someone to make an axle back system that's quiet enough and I plan on using some "kool mat" to protect the important bits in the rear but here's the carbon fiber diffuser I made. It has a radius on the leading edge so it can be adjusted up and down without creating a lip to trip up the air in the throat

lobsterroboto

Very much considering that. Not a lot of c7s with full aero

383

I made the strakes replaceable on mine with those CNC tabs on the top then I just silicone-ed them in place on the bottom with home depot racing black silicone.

C5Z06CE

Have you had a chance to test it on track yet??

383

I did. I ran an aluminum version with fewer strikes and had great flow attachment and was able to run less rear wing but the aluminum reflected so much heat my transmission would "burp" fluid on really hot days and that made me nervous, so I pulled it. When I design an over axle kit to go with this diffuser I'll have some strategically-placed coolmatt.

C5Z06CE

What do you mean by over axle kit?? The exhaust already goes over the axle. I am not understanding you somewhere.

383

One where the exhaust pipes exit about 3" higher than stock

C5Z06CE

I am assuming you are doing that to have more clearance for the elevation of the diffuser. You can just divert the exhaust out the sides of the rear fenders and that provides enough clearance for the diffuser (at least it does on my C5Z). No need to waste energy fabricating something complex. I have also seen it done on a C6.

smitty2919

Anyone with updates? I've began the "cardboard template" stage. Still trying to figure out a streetable exhaust and diffuser design that will play well with each other. Custom boom tubes on a C5Z with custom baffles internals would allow very thin "mufflers" with tips only 2"x10" wide. That could sit above the diffuser.

If I had the ***** like C5Z06CE above I would cut a hole in the bumper for side exhaust

C5Z06CE

smitty2919

That means bidness!


I’m not as fancy as CF so I was thinking to use 1/8” “alumacorr” “alumalite” or known as Aluminum Composite Material (ACM). Basically thin sheets of aluminum sandwiching a nylon plastic core.

Somewhat hesitant if I do a blown diffuser style and if the plastic core would melt.


C5Z06CE, any issues with the exhaust damaging the painted bumper being that close?

C5Z06CE

Well one way or another there will be exposure of the exhaust with any diffuser or body panels or both. I can tell you that heat shielding is obviously important. How you do that is up to you and your budget.

smitty2919

DEI’s C5 tunnel kit material comes to mind to place on the top side of diffuser to protect from excessive radiating heat.

C5Z06CE

I used similar stuff and have described what I used in other posts. I have gone into detail before. Sorry to be so vague but just search my prior posts. I just cant bring myself to list all the things I did AGAIN.

lobsterroboto

I ended up having one fabricated.

smitty2919

I was able to get on a lift and spend some quality time with cardboard and have 80% of the layout/look completed. With my side panels basically touching the rear bumper cover on the sides allows for a 4" diameter muffler to still have an air gap to the trunk and diffuser.

FYI for those curious. If you come horizontally back from the rear cradle 5.5" to come past the swaybar) then angle up with a flat panel until the panel will contact the c5 trunk, you CAN have ~21* of diffuser angle. Which seems like A LOT if a "functional" one is around the 12* range. This has the trailing edge of the panel about 2" from the raised section of the bumper cover where the tips usually sit.

aventino68

Curious, is there an easy or cheap way to get some finite analysis on how well any of these aero devices perform. Aside from literally tufts of wool and driving behind them?