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Rear Diffuser

 
Old 02-11-2019, 01:48 PM
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Josh Dockstader
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Default Rear Diffuser

Is there any companies out there that make an actual functional C6Z race rear diffuser? I have been looking online and done a little searching here but have not seen anything aside from the show car focused pieces.

Thanks!

Last edited by Josh Dockstader; 02-11-2019 at 01:48 PM.
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Old 02-11-2019, 01:54 PM
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Old 02-11-2019, 05:40 PM
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STANG KILLA SS
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ive never come across one.
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Old 02-11-2019, 10:25 PM
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AJ Hartman aero diffusor. I am installing on my C5. Aerodynamicist designed. Not bolt-on, requires some fab - but this is no show piece.

https://ajhartmanaero.com/modular-diffusor/
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Old 02-12-2019, 07:45 AM
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I made one.
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Old 02-12-2019, 08:50 AM
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Originally Posted by GO_BLUE_VETTES View Post
AJ Hartman aero diffusor. I am installing on my C5. Aerodynamicist designed. Not bolt-on, requires some fab - but this is no show piece.

https://ajhartmanaero.com/modular-diffusor/
I'm guessing you've done some measurements? Will you need canards or does the single piece cover the needed areas?
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Old 02-12-2019, 09:17 AM
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Originally Posted by GO_BLUE_VETTES View Post
AJ Hartman aero diffusor. I am installing on my C5. Aerodynamicist designed. Not bolt-on, requires some fab - but this is no show piece.

https://ajhartmanaero.com/modular-diffusor/
This is the route I was thinking I would have to go. How far have you gotten on install so far?
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Old 02-12-2019, 09:17 AM
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Originally Posted by rbzo6 View Post
I made one.
Do you have any pictures straight on from the rear? Is it a home made diffuser or a purchased one?
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Old 02-12-2019, 12:25 PM
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That AJ Hartman one is MASSIVE and I believed to be only inches off the ground to be very functional. I saw one of those on Paul Faessler's 60's road race car at PRI this year. It sits very low and extends pretty far out from the rear bumper.

If you are going 100% functional track car then it may be an option. But I would be hesitant on a dual purpose street/track car.
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Old 02-12-2019, 12:35 PM
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Homemade. Constructed of 5052 .080 aluminum. Attaches to the factory diffuser. I run coil over shocks. A belly pan covers the rear up to where the exhaust pipes go together. Removed backup lights and replaces with SS screen to help trapped air escape.
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Old 02-12-2019, 02:07 PM
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Originally Posted by rbzo6 View Post
Homemade. Constructed of 5052 .080 aluminum. Attaches to the factory diffuser. I run coil over shocks. A belly pan covers the rear up to where the exhaust pipes go together. Removed backup lights and replaces with SS screen to help trapped air escape.
That is very similar to what I had in mind for building my own if I went that route. Did you do any CAD for design or did you just manually cut everything?

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Old 02-12-2019, 07:35 PM
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No CAD.
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Old 02-12-2019, 09:56 PM
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Originally Posted by rbzo6 View Post
No CAD.
Looks really well done for no computer aid. Have you noticed any difference on track with it? Do you run front aero as well?
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Old 02-12-2019, 10:40 PM
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Originally Posted by GO_BLUE_VETTES View Post
AJ Hartman aero diffusor. I am installing on my C5. Aerodynamicist designed. Not bolt-on, requires some fab - but this is no show piece.

https://ajhartmanaero.com/modular-diffusor/
please post pics when done. I was looking at this for my C5 also.
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Old 02-13-2019, 09:08 PM
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Old 02-14-2019, 12:02 PM
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You don't always need CAD. Cardboard or poster board, pencil and scissors can make plenty of cool stuff.
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Old 02-14-2019, 03:09 PM
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agreed. as some one who uses CAD everyday at work. this is not needed for a sheetmetal diffuser.
tape measure, sharpie, straight edge, cardboard (if your a measure twice cut once type ) and maybe and angle finder if you want to get technical.
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Old 02-14-2019, 04:11 PM
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I also use CAD every day. If there was CAD models or .dxf files of the diffuser parts then it could be replicated very easily. That is why I asked. If I build one, I will do everything in SolidWorks and share the files with anyone who wants them.
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Old 02-15-2019, 09:11 AM
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It is surprising no one makes a "bolt on" rear diffuser for the C5/C6 with how many people race them.

Danny Popp can get you hooked up with a CAM style rear spoiler and or a road race wing. I'm not sure who fabricates this stuff for him as a "kit".

If I was to make one it would be easier to go the carboard/pencil/scissor route, get everything worked out THEN remove everything and replicate it in CAD. You can then add even bolt spacing etc etc. Would be quite easy. Export drawings or models in whatever file format a laser cutting machine needs to read it. Done.

Last edited by smitty2919; 02-15-2019 at 09:16 AM.
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Old 02-15-2019, 10:44 AM
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Exactly smitty2919. I will see how much time I have this spring to work on one. Maybe rbz06 can post some under body photos to get an idea of how he made his. That would be a huge help for a starting point.

Last edited by Josh Dockstader; 02-15-2019 at 10:45 AM.
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