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Rear Diffuser

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Old Mar 23, 2012 | 11:50 AM
  #101  
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Originally Posted by Vette Daddy
If you wait until it's hardened up, just use a cutoff wheel. Then use a sanding block with 80 grit to finish out the edges nicely. Works great.
Yeah, thats what I did at first. Then I started to trim before it cured, and I could just snip away with scissors, instead of flinging fine white powder everywhere.
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Old Mar 23, 2012 | 10:20 PM
  #102  
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Oh, crap. I might to build one of these just for fun. I've worked with fiberglass before so.....I need a project for when things are slow at work anyway.
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Old Mar 23, 2012 | 11:43 PM
  #103  
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Originally Posted by merlot566jka
Yeah, thats what I did at first. Then I started to trim before it cured, and I could just snip away with scissors, instead of flinging fine white powder everywhere.
I hear ya. I've done both but just normally use the cutoff wheel. You just get used to doing it one way after a while.
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Old Mar 31, 2012 | 01:50 PM
  #104  
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Anything new? I am still trying to find enough cardboard to cover the whole underside... It rained here so that isnt good for some dumpster diving lol
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Old May 26, 2012 | 08:27 PM
  #105  
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bump for updates?
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Old May 27, 2012 | 12:10 PM
  #106  
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Originally Posted by NoSkills
bump for updates?
Not from me... I wont be tackling this for a while unfortunately...
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Old May 28, 2012 | 07:59 AM
  #107  
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Originally Posted by GS348
I've eyed this diffuser for a while.....would love it on my GS!
Me too, when and where can I send my money?
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Old May 28, 2012 | 11:47 AM
  #108  
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Those look awesome, where does it mount to in the front?

Last edited by Alan777; May 28, 2012 at 12:51 PM.
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Old May 28, 2012 | 07:20 PM
  #109  
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Originally Posted by LT1*C4
I've seen a few pictures of that diffuser and it certainly appears to be a quality piece. One that I'm sure many would love to have on their C4's, including myself.

Would you by any chance have any pictures or could at least describe how your diffuser is mounted?

Does it attach to the spare tire housing?

I've long since gotten rid of both the spare tire as well as the housing for a cleaner look from the rear. If your diffuser can be mounted without the need of the the plastic housing being in place, place me on the list of interested buyers. I've got money in hand!
Hi. The diffuser on my car mounts to the leaf spring mount. My car has coil overs. There is no spare either. I think I can design it to mount where the two "L" bolts mount for the spare tire tub instead of at the leaf spring mount. That's just s thought. I need to study it a bit but could probably still mount it at the leaf spring mount with a simple adapter of sorts.
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Old May 28, 2012 | 07:27 PM
  #110  
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Originally Posted by Vette Daddy
I need to study it a bit but could probably still mount it at the leaf spring mount with a simple adapter of sorts.
Awesome. Once you've decided on the final mounting design, please let us know. I'll be first in line to order one.

Thanks again!
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Old Jun 9, 2012 | 08:16 PM
  #111  
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Decided to DIY my own. Got the aluminum cut, still have to drill the mounting holes and get it powdercoated.

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Old Jun 10, 2012 | 10:39 AM
  #112  
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Originally Posted by Alan777
Decided to DIY my own. Got the aluminum cut, still have to drill the mounting holes and get it powdercoated.

Looks Great
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Old Aug 13, 2012 | 01:17 PM
  #113  
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Hey guys. Sry for the long wait. I picked up another project working on my dad's boat and it tok all the little spare time I have. Regardless, the diffuser... It's coming along great. I'm looking to have it on the Vette in the next couple days. Here's some pics...

So... sad news... I had to start back from scratch... The curved fins I was trying to get on the first design were just to hard to make symetric. Nevertheless, I dove back in. This time around I used thicker cardboard and straight fins.
Here's the two side by side. I like the thicker look of the new one.



Tape Tape Tape....



Couple layer of fiberglass on... Its really solid. Glad I went with the thicker cardboard.



Finally out of fiberglass! That was my cue that I was done. Here's a pic after cleaning it up a bit and sanding and such.



As of this past weekend I drilled the mounting holes, etc and started the bondo work. Shouldn't need too much more bondo work. I'm gonna try to finish that up today or tommorrow and then paint! Here's a pic with the first coat of bondo sanded down.



I'm really happy with where its at now and can't wait to get it in the car. What I'm going to do first is just remove the spare tire and cover for a week or two and just put the diffuser in and see if I get any good / bad comments on it before I decide to drill holes and such in the tire cover.

But I'll keep you guys posted be on the lookout for some more pics in the next few days.

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Old Aug 13, 2012 | 01:40 PM
  #114  
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It looks very well constructed
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Old Aug 13, 2012 | 01:46 PM
  #115  
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Really cool! Do you know how much it weighs?
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Old Aug 13, 2012 | 02:11 PM
  #116  
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Good to see you progress on the project.
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Old Aug 13, 2012 | 03:42 PM
  #117  
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Looking good!
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Old Aug 13, 2012 | 07:12 PM
  #118  
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I know a diffuser won't serve any function for me other than a big grin, nonetheless I do want one. The one on VD's ZR-1 looks badazz!

Nice work on the cardboard/glass one, your second version looks like it belongs.

Perhaps a future project for me too when I'm locked in by snow.
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Old Aug 13, 2012 | 08:59 PM
  #119  
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Originally Posted by kimmer
Really cool! Do you know how much it weighs?
Just weighed it after a night's work of bondo and sanding..... 10 lbs exact!
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Old Aug 13, 2012 | 09:26 PM
  #120  
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I have enough trouble with the topes already - have to pass on this mod!
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