rear bumper exhaust stains

FireDan50 · 10-16-2014, 10:15 PM

Any body else have problems with their rear bumpers getting discolored because of the exhaust? Its really noticeable on my pearl white. Every 2 weeks or so I have to polish out the bottom portions of my bumper because they're all stained brown. Only thing I can think of to stop it is maybe put a cat back in somewhere in the exhaust.

Grindkiezer · 10-16-2014, 10:38 PM

Are you running a stock exhaust setup now? I could see that being more noticeable if you were to remove cats or create more air flow

JMac88 · 10-16-2014, 10:45 PM

That's why so many pw owners get a diffuser or paint that section black.

SlowZ · 10-17-2014, 04:20 PM

I run rich so my PW rear always is dirty. It doesn't help that I don't have cats either

Rusty · 10-17-2014, 09:43 PM

Got LTH's with no cats. I use wheel cleaner for painted rims to wash off the stain.

FireDan50 · 10-17-2014, 09:58 PM

Glad I'm not the only one w/ dirty butt. I have a carbon diffuser covering up the lower section but the rest of the lower bumper gets brown stained bad....almost makes me want to put cats back in :P

axmea? · 10-17-2014, 10:04 PM

Quote:

Originally Posted by JMac88

That's why so many pw owners get a diffuser or paint that section black.

I had no idea.. Wow. I learned something today.

SouthArk370Z · 10-17-2014, 10:19 PM

Junkman may have some tips on how to clean and prevent the staining.

90 ST · 10-18-2014, 03:26 AM

Sounds to me like you need to drive faster so you can out run the exhaust...

P's_Z · 10-18-2014, 05:28 AM

Quote:

Originally Posted by FireDan50

Glad I'm not the only one w/ dirty butt.

P's_Z · 10-18-2014, 05:32 AM

Quote:

Originally Posted by 90 ST

Sounds to me like you need to drive faster so you can out run the exhaust...

Your words are wise, my friend

niko86 · 10-20-2014, 10:37 AM

i would try coating it, eg quartz coating or some kind of ceramic coating so it washes off easily.
definitely avoid wheel cleaner on your paint!

FireDan50 · 10-20-2014, 10:41 AM

I've tried Sonax polymer net shield, Adams quick sealant, Adams Liquid Paint Sealant, NanoSkin sealant...couple waxes. Nothing prevents the browning. I always have to polish the brown out with a polish either by hand or porter cable. I'll take some pics to better show what I'm talking about.

Rusty · 10-20-2014, 02:08 PM

Quote:

Originally Posted by niko86

i would try coating it, eg quartz coating or some kind of ceramic coating so it washes off easily.
definitely avoid wheel cleaner on your paint!

Use the stuff for painted wheels. Won't harm the paint.

1LIFE · 10-20-2014, 10:33 PM

Mild dish detergent, microfiber cloth and elbow grease.. Does the trick every time (;
BTW theres no sealant or wax that will stop the browning.. Ive found that the browning is actually absorbed more when there is plenty of wax on my bumper, but I still want that layer of protection from the wax there..

10-16-2014, 10:15 PM	#1 (permalink)
FireDan50 Track Member Join Date: Mar 2012 Location: San Antonio Posts: 714 Drives: '09 370Z PW M6 Rep Power: 19	rear bumper exhaust stains Any body else have problems with their rear bumpers getting discolored because of the exhaust? Its really noticeable on my pearl white. Every 2 weeks or so I have to polish out the bottom portions of my bumper because they're all stained brown. Only thing I can think of to stop it is maybe put a cat back in somewhere in the exhaust. __________________ VSR Single-turbo kit: 611hp/517tq @ 10psi (Q16 race gas) Dan's VSR top-mount turbo 370z

10-16-2014, 10:38 PM	#2 (permalink)
Grindkiezer Track Member Join Date: Sep 2012 Location: San Diego Posts: 824 Drives: A Car Rep Power: 14	Are you running a stock exhaust setup now? I could see that being more noticeable if you were to remove cats or create more air flow __________________ Z

10-16-2014, 10:45 PM	#3 (permalink)
JMac88 Enthusiast Member Join Date: Jun 2010 Location: Edmonton AB Posts: 416 Drives: 2010 PW 370z Rep Power: 15	That's why so many pw owners get a diffuser or paint that section black. DEpointfive0 likes this. __________________ Full Mod List

10-17-2014, 09:43 PM	#5 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,220 Drives: 2011 Nismo GM 6M Rep Power: 2684438	Got LTH's with no cats. I use wheel cleaner for painted rims to wash off the stain. FPenvy and Hotrodz like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-17-2014, 09:58 PM	#6 (permalink)
FireDan50 Track Member Join Date: Mar 2012 Location: San Antonio Posts: 714 Drives: '09 370Z PW M6 Rep Power: 19	Glad I'm not the only one w/ dirty butt. I have a carbon diffuser covering up the lower section but the rest of the lower bumper gets brown stained bad....almost makes me want to put cats back in :P P's_Z likes this. __________________ VSR Single-turbo kit: 611hp/517tq @ 10psi (Q16 race gas) Dan's VSR top-mount turbo 370z

10-17-2014, 04:20 PM	#4 (permalink)
SlowZ Premium Member Join Date: Jan 2014 Location: So cal Posts: 371 Drives: Z Rep Power: 11	I run rich so my PW rear always is dirty. It doesn't help that I don't have cats either

10-17-2014, 10:19 PM	#8 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	Junkman may have some tips on how to clean and prevent the staining. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

10-18-2014, 03:26 AM	#9 (permalink)
90 ST A True Z Fanatic Join Date: May 2010 Location: Calgary Posts: 1,861 Drives: 90 and 15 GMC Sierra Rep Power: 421	Sounds to me like you need to drive faster so you can out run the exhaust... DIGItonium and P's_Z like this.

10-20-2014, 10:37 AM	#12 (permalink)
niko86 Base Member Join Date: Jan 2014 Location: Vienna, Austria Posts: 46 Drives: MY05 350Z, MY10 370Z Rep Power: 11	i would try coating it, eg quartz coating or some kind of ceramic coating so it washes off easily. definitely avoid wheel cleaner on your paint!

10-20-2014, 10:41 AM	#13 (permalink)
FireDan50 Track Member Join Date: Mar 2012 Location: San Antonio Posts: 714 Drives: '09 370Z PW M6 Rep Power: 19	I've tried Sonax polymer net shield, Adams quick sealant, Adams Liquid Paint Sealant, NanoSkin sealant...couple waxes. Nothing prevents the browning. I always have to polish the brown out with a polish either by hand or porter cable. I'll take some pics to better show what I'm talking about. __________________ VSR Single-turbo kit: 611hp/517tq @ 10psi (Q16 race gas) Dan's VSR top-mount turbo 370z

10-20-2014, 10:33 PM	#15 (permalink)
1LIFE Track Member Join Date: Dec 2012 Location: Louisville, Ky Posts: 513 Drives: Fast Lane Rep Power: 62	Mild dish detergent, microfiber cloth and elbow grease.. Does the trick every time (; BTW theres no sealant or wax that will stop the browning.. Ive found that the browning is actually absorbed more when there is plenty of wax on my bumper, but I still want that layer of protection from the wax there.. __________________ Built GReddy TT "I downshift next to Prius so the driver hears me hurting the environment" Last edited by 1LIFE; 10-20-2014 at 10:43 PM.

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