Test pipes is this normal?

370zBoyz · 11-19-2019, 11:18 AM

I took off my old test pipes and they have some scratches on it and some minor superficial dents. Also, they looked like they got red hot at one point because they became blue near the part going to the headers. Is this normal?

Spooler · 11-19-2019, 11:21 AM

Yeap, that would be normal. They get hot.

crazy4oldcars · 11-19-2019, 11:26 AM

The whole point of cats is to get hot (400*+F) to burn off incompletely consumed fuel. The blue is a side affect of that.

Kirk B.

SouthArk370Z · 11-19-2019, 12:27 PM

You can easily prevent the bluing from happening - never start the engine.

crazy4oldcars · 11-19-2019, 12:31 PM

Quote:

Originally Posted by SouthArk370Z

You can easily prevent the bluing from happening - never start the engine.

Yeah, but pushing it everywhere is going to get tiring...

Kirk B.

370zBoyz · 11-19-2019, 12:31 PM

Quote:

Originally Posted by SouthArk370Z

You can easily prevent the bluing from happening - never start the engine.

I guess I can always push the car

370zBoyz · 11-19-2019, 12:35 PM

Quote:

Originally Posted by crazy4oldcars

Yeah, but pushing it everywhere is going to get tiring...

Kirk B.

Well....I guess I can always it tow it then push it so it's less exhausting

370zBoyz · 11-19-2019, 12:36 PM

Quote:

Originally Posted by Spooler

Yeap, that would be normal. They get hot.

What about the scratch marks and denting? You think it might have hit against the frame or engine?

I saw the blue and was like man they must have been cooking and wondering if that is normal for that kind of heat to be there.

JARblue · 11-19-2019, 01:27 PM

That bluing is totally normal. And pretty.

No. Unless the TPs are improperly mounted, they are not hitting the frame or engine. The scratches and dents are most likely from misc road debris bouncing up and hitting them. Unless you only drive on roads that are perfectly smooth with no loose pebbles or anything on the road surface.

crazy4oldcars · 11-19-2019, 02:09 PM

Despite the silliness, what you describe is normal wear and tear. Rocks, pieces of stick, pieces of road, all that good stuff. It has to match with the rock chips in the paint.

Kirk B.

danegrey · 11-19-2019, 03:45 PM

thanks for the posts, that generate some laughs for me, help make my day

Spooler · 11-19-2019, 09:09 PM

Quote:

Originally Posted by JARblue

That bluing is totally normal. And pretty.

No. Unless the TPs are improperly mounted, they are not hitting the frame or engine. The scratches and dents are most likely from misc road debris bouncing up and hitting them. Unless you only drive on roads that are perfectly smooth with no loose pebbles or anything on the road surface.

^^^^What He said...

Rusty · 11-20-2019, 09:48 PM

If you want to get rid of the bluing. Get them Jet-Hot coated or something like that. All of my LTH's are coated. Car's, bikes, trucks.

Swaffy · 12-19-2019, 11:55 AM

To add some helpful info regarding your question about the blue tint and heat, you can heat wrap your short headers and test pipes to reduce engine bay temperatures.

11-19-2019, 11:26 AM	#3 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	The whole point of cats is to get hot (400*+F) to burn off incompletely consumed fuel. The blue is a side affect of that. Kirk B. BettyZ likes this.

11-19-2019, 12:27 PM	#4 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	You can easily prevent the bluing from happening - never start the engine. crazy4oldcars and BettyZ like this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

11-19-2019, 01:27 PM	#9 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	That bluing is totally normal. And pretty. No. Unless the TPs are improperly mounted, they are not hitting the frame or engine. The scratches and dents are most likely from misc road debris bouncing up and hitting them. Unless you only drive on roads that are perfectly smooth with no loose pebbles or anything on the road surface. SouthArk370Z, Spooler, BettyZ and 1 others like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

11-19-2019, 02:09 PM	#10 (permalink)
crazy4oldcars Enthusiast Member Join Date: Aug 2016 Location: SE Texas Posts: 448 Drives: '16 Nismo Tech Rep Power: 28413	Despite the silliness, what you describe is normal wear and tear. Rocks, pieces of stick, pieces of road, all that good stuff. It has to match with the rock chips in the paint. Kirk B. bunk and BettyZ like this.

11-19-2019, 03:45 PM	#11 (permalink)
danegrey A True Z Fanatic Join Date: Oct 2011 Location: Knoxville Age: 71 Posts: 3,190 Drives: 12 370Z BK Cherry M6 Rep Power: 649540	thanks for the posts, that generate some laughs for me, help make my day __________________ Lots of Changes the Z needs to be driven and driven hard for the car lives for it

11-19-2019, 11:21 AM	#2 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,797 Drives: 2013 Nismo 370z Rep Power: 2684392	Yeap, that would be normal. They get hot.

11-20-2019, 09:48 PM	#13 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	If you want to get rid of the bluing. Get them Jet-Hot coated or something like that. All of my LTH's are coated. Car's, bikes, trucks. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

12-19-2019, 11:55 AM	#14 (permalink)
Swaffy Base Member Join Date: Mar 2019 Location: Cibolo, TX Posts: 9 Drives: 2020 Deep Blue Pearl Rep Power: 6	To add some helpful info regarding your question about the blue tint and heat, you can heat wrap your short headers and test pipes to reduce engine bay temperatures.

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