How would you modify this? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Spec · 06-27-2017, 09:57 PM

Hey there. I just received the diffuser I ordered from ebay. Pics below.

Cost me 150ish, hoping the fitment is good... but bigger issue, or rather,
challenge;

I bought this knowing I would need to modify it to fit quad tips. I really
like it, looks good. Add some paint (eggshell? or semigloss?), and it will
look great. But I need to do something about the exhaust holes.

How would you modify this? I know there's some creative people out there.
I'm thinking heat gun, a large pipe to make sure it expands evenly. Don't
need much, probably 2-3".

If you've got a better idea, I'd love to read about it. Are there tools out
there that can expand a plastic hole with a little heat?

Thanks in advance for any ideas, especially from those who've had to
modify body parts to fit their rides.

cnrad · 06-27-2017, 10:15 PM

I think using heat then working the plastic to make the holes wider will deform the diffuser. Your best bet would be to probably cut it similar to the NPP diffuser.

See ssmike's post in this thread to get an idea of what to do: http://www.camaro5.com/forums/showthread.php?t=263888

Gunmetal Speedster · 06-27-2017, 10:38 PM

Quote:

Originally Posted by cnrad

I think using heat then working the plastic to make the holes wider will deform the diffuser. Your best bet would be to probably cut it similar to the NPP diffuser.

See ssmike's post in this thread to get an idea of what to do: http://www.camaro5.com/forums/showthread.php?t=263888

I would have to agree with this.

If this isn't the route you take, be sure to post up how you did it in case others want to know for future use

STUNNAH · 06-27-2017, 10:45 PM

I would use a dremel to make the cut and a heavy sandpaper to smooth the roundness...

Spec · 06-27-2017, 10:52 PM

What it looks like now... so you guys think cutting is my best option? I'd probably
have to remove the entire inner lip/rim by cutting right at the bend, then keep going
towards the center, then cutting back downward...

Dremel and some sandpaper... considering it.

Gunmetal Speedster · 06-28-2017, 12:01 AM

What's the difference between the two? Does the new one have bigger "fins" or whatever you call them?

riozlander · 06-28-2017, 01:34 AM

Quote:

Originally Posted by STUNNAH

I would use a dremel to make the cut and a heavy sandpaper to smooth the roundness...

+1 that's what I was gona say

tho I want to make my own out of sheet metal.

cnrad · 06-28-2017, 01:39 AM

Quote:

Originally Posted by Gunmetal Speedster

What's the difference between the two? Does the new one have bigger "fins" or whatever you call them?

Yup, bigger fins and smooth across the top.

http://www.camaro5.com/forums/showthread.php?t=493506

Olddudesrule · 06-28-2017, 09:56 AM

I think cutting the bottom and making the hole a bit more "square" would be the best solution. I think a heat gun would just deform the plastic, and would be more visible.

Spec · 06-28-2017, 08:28 PM

If cutting is my best option, what do you guys think... #1, 2, or 3?

Maybe add a small black 'U' trim at the cuts...

Spec · 06-28-2017, 08:33 PM

Here's a cleaner picture of the 1LE (NPP) diffuser I took when installing my quads.

TheFlyingBananaSS · 06-28-2017, 08:38 PM

Try not to do the top version. The lower part of this diffuser does not screw into the car the way the factory one does. So to keep as much strength possible, don't make notches, make holes instead. Trust me. I used 4 black tie wraps to secure the bottom edge to the black reinforcemen section that hangs down.

Spec · 06-28-2017, 08:41 PM

Quote:

Originally Posted by TheFlyingBananaSS

Try not to do the top version. The lower part of this diffuser does not screw into the car the way the factory one does. So to keep as much strength possible, don't make notches, make holes instead. Trust me. I used 4 black tie wraps to secure the bottom edge to the black reinforcemen section that hangs down.

Thanks for the tip! Yours looked great so I thought I'd try one out and modify it for that price. I'd love to see your car from directly behind standing about 10ft back.

TheFlyingBananaSS · 06-28-2017, 08:49 PM

Quote:

Originally Posted by Spec

Thanks for the tip! Yours looked great so I thought I'd try one out and modify it for that price. I'd love to see your car from directly behind standing about 10ft back.

I can get a pic looking directly behind it tomorrow after work. Stand by.

And be prepared for other camaros pulling you over to ask where you got the back of your car from

I surprised how many camaros owners are not active in a camaro forum or club somewhere.

06-27-2017, 10:45 PM	#4
STUNNAH "BEASTM*DE" Drives: 2013 ZL1 Black Join Date: Aug 2016 Location: Tennessee Posts: 1,655 View My Garage	I would use a dremel to make the cut and a heavy sandpaper to smooth the roundness... __________________ Vengeance Racing Stage 1 Kit 575rwhp, 569 rwtq... Rims powder coated gloss black...BFG'S Comp 2 A/S... Dual 10" Kicker Comp S Subs 1200w...

06-27-2017, 10:52 PM	#5
Spec Account Suspended Drives: 2010 Camaro 1SS LS3 Join Date: Jan 2015 Location: Riverside, CA Posts: 4,018	What it looks like now... so you guys think cutting is my best option? I'd probably have to remove the entire inner lip/rim by cutting right at the bend, then keep going towards the center, then cutting back downward... Dremel and some sandpaper... considering it. Attached Images

06-28-2017, 12:01 AM	#6
Gunmetal Speedster Drives: Savitar; The 500rwhp N/A Monster! Join Date: Aug 2016 Location: Middletown, Ohio Posts: 2,914 View My Garage	What's the difference between the two? Does the new one have bigger "fins" or whatever you call them? __________________ **SOLD504HP/433**TQ \| Night Fury cammed • Cold Air Inductions intake • Bo White ported TB • Speed Engineering 1 7/8 longtubes • NPP catback • QTP low profile cutouts • Powerbond 25% UDP • 3.73 gears • JRE scoop • ZL1 grille • R1 Concepts drilled/slotted rotors • built/tuned by Weapon X Motorsports Instagram \| YouTube \| Build Thread

06-28-2017, 09:56 AM	#9
Olddudesrule Resident nomad Drives: 2014 Summit White 1SS/1LE Join Date: Nov 2015 Location: Gilbert, AZ Posts: 1,765	I think cutting the bottom and making the hole a bit more "square" would be the best solution. I think a heat gun would just deform the plastic, and would be more visible. __________________ Sold: 2007 Z06 2002 Viper GTS/ACR 2003 Z06 1965 FFR Cobra 2012 Nissan 370Z ADM LSA Stage II, Roto-Fab CAI, Kooks LTH/HFC's, Phastek CC, ported TB, Mishimoto radiator and oil cooler, BC Racing ER Series CO's, JPSS 32mm Black Magic rear bar, JPSS front inserts, R1 Concepts Premier slotted rotors/Goodrich SS lines, Schroth ASM harness, MGW flatstick, Brey-Krause HB, Tuned by NicD, at Cordes Performance Racing.

06-28-2017, 08:28 PM	#10
Spec Account Suspended Drives: 2010 Camaro 1SS LS3 Join Date: Jan 2015 Location: Riverside, CA Posts: 4,018	If cutting is my best option, what do you guys think... #1, 2, or 3? Maybe add a small black 'U' trim at the cuts... Attached Images

06-27-2017, 09:57 PM	#1
Spec Account Suspended Drives: 2010 Camaro 1SS LS3 Join Date: Jan 2015 Location: Riverside, CA Posts: 4,018	How would you modify this? Hey there. I just received the diffuser I ordered from ebay. Pics below. Cost me 150ish, hoping the fitment is good... but bigger issue, or rather, challenge; I bought this knowing I would need to modify it to fit quad tips. I really like it, looks good. Add some paint (eggshell? or semigloss?), and it will look great. But I need to do something about the exhaust holes. How would you modify this? I know there's some creative people out there. I'm thinking heat gun, a large pipe to make sure it expands evenly. Don't need much, probably 2-3". If you've got a better idea, I'd love to read about it. Are there tools out there that can expand a plastic hole with a little heat? Thanks in advance for any ideas, especially from those who've had to modify body parts to fit their rides. Attached Images

06-27-2017, 10:15 PM	#2
cnrad Drives: a wagon Join Date: Jul 2010 Location: ᴄᴀʟɪꜰᴏʀɴɪᴀ Posts: 1,199 View My Garage	I think using heat then working the plastic to make the holes wider will deform the diffuser. Your best bet would be to probably cut it similar to the NPP diffuser. See ssmike's post in this thread to get an idea of what to do: http://www.camaro5.com/forums/showthread.php?t=263888

06-28-2017, 08:33 PM	#11
Spec Account Suspended Drives: 2010 Camaro 1SS LS3 Join Date: Jan 2015 Location: Riverside, CA Posts: 4,018	Here's a cleaner picture of the 1LE (NPP) diffuser I took when installing my quads. Attached Images

06-28-2017, 08:38 PM	#12
TheFlyingBananaSS Evil Genius of Chevrolet Drives: 2017 Z06, 2019 XTS, 2013 SS Join Date: Feb 2017 Location: New York Posts: 3,260	Try not to do the top version. The lower part of this diffuser does not screw into the car the way the factory one does. So to keep as much strength possible, don't make notches, make holes instead. Trust me. I used 4 black tie wraps to secure the bottom edge to the black reinforcemen section that hangs down. __________________ GPI SS2 VVT cam, ECS Novi 1500 supercharger, Corsa Extreme, Detroit Speed and BMR suspension, Circle D triple disc, Melling oil pump, LS2 chain tensioner, ATI 10% UD, DSX E85 kit, High Energy coils, BTR springs, LS2 Lifter trays, Titanium retainers, hardened push rods, FIC 1000 injectors, ZL1 pump, Mighty Mouse catch can, AEM gauges, Tial BOV, Richmond 3.91 gears, Custom gauge bezels, Speed Engineering headers, Stainless Works HF cats, DSX Aux pump, 710rwhp on E85.