Uncatted header install - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

rtalich · 12-14-2017, 12:24 PM

Just checking to see if anyone else has experienced this. I recently replaced my stock header with the Gruppe-S. Immediately noticed exhaust smell which I knew would happen and am OK with... if it stays outside. But when I turn on the climate control its almost unbearable. I can't hear any leaks... but I think I must have a leak somewhere. Any ideas? Or is this normal?

Thanks!!

dattran86 · 12-14-2017, 02:39 PM

possible that WD-40 was spray onto the nut, in order to break it loose easier?

when I was doing the header swap and spray WD40 on the nut, after i got the aftermarket one in and start up the car. it started smoking and smell really bad, turn out it was just the WD-40 burning because the engine/exhaust heat up.

it should go away after a day

NRXRaptor · 12-14-2017, 03:22 PM

I forgot to take a sticker off a front pipe before I installed it. It melted and I thought I melted something important before I realized. I'd wait a week to see if it goes away

tyler_win_photo · 12-14-2017, 03:28 PM

Check the connection to the overpipe, that's where most leaks usually come from from header installs

Token11b · 12-14-2017, 04:00 PM

You'll have a smell for a little while while the exhaust heat burns off the coatings and other things. It'll go away. I run a gruppe s uel also.

rtalich · 12-14-2017, 04:45 PM

Quote:

Originally Posted by dattran86

possible that WD-40 was spray onto the nut, in order to break it loose easier?

Nope did not use anything to break nuts loose.

Quote:

Originally Posted by NRXRaptor

I forgot to take a sticker off a front pipe before I installed it. It melted and I thought I melted something important before I realized. I'd wait a week to see if it goes away

I bought the header used, so no stickers present.

Quote:

Originally Posted by tyler_win_photo

Check the connection to the overpipe, that's where most leaks usually come from from header installs

OK will do!! Thanks.

Quote:

Originally Posted by Token11b

You'll have a smell for a little while while the exhaust heat burns off the coatings and other things. It'll go away. I run a gruppe s uel also.

Thanks... I bought the header used so coatings and whatnot should have already been burnt off.

finch1750 · 12-14-2017, 05:17 PM

Get some soapy water and spray it on the exhaust flanges when its cold. Helps to spot leaks since you'll see the suds move.

Did you use all new gaskets and/or RTV?

rtalich · 12-14-2017, 06:38 PM

Quote:

Originally Posted by finch1750

Get some soapy water and spray it on the exhaust flanges when its cold. Helps to spot leaks since you'll see the suds move.

Did you use all new gaskets and/or RTV?

Thanks! That was my plan for this weekend.

I used new gaskets but just received a set of new ones from Grimmspeed I am going to use.

12-14-2017, 12:24 PM	#1
rtalich Member Join Date: Feb 2017 Drives: 2015 BRZ Series.Blue Location: Bellevue Posts: 41 Thanks: 5 Thanked 4 Times in 3 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Uncatted header install Just checking to see if anyone else has experienced this. I recently replaced my stock header with the Gruppe-S. Immediately noticed exhaust smell which I knew would happen and am OK with... if it stays outside. But when I turn on the climate control its almost unbearable. I can't hear any leaks... but I think I must have a leak somewhere. Any ideas? Or is this normal? Thanks!!

12-14-2017, 02:39 PM	#2
dattran86 Driver Join Date: Aug 2016 Drives: 2013 Whiteout FRS Location: Toronto/GTA Posts: 539 Thanks: 427 Thanked 237 Times in 159 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	possible that WD-40 was spray onto the nut, in order to break it loose easier? when I was doing the header swap and spray WD40 on the nut, after i got the aftermarket one in and start up the car. it started smoking and smell really bad, turn out it was just the WD-40 burning because the engine/exhaust heat up. it should go away after a day __________________ Check out my website: http://www.aim4apex.com/ IG: aimforapex

12-14-2017, 03:28 PM	#4
tyler_win_photo Senior Member Join Date: Dec 2013 Drives: 2014 Scion FRS (Asphalt) Location: Redmond, WA Posts: 553 Thanks: 36 Thanked 171 Times in 141 Posts Mentioned: 6 Post(s) Tagged: 2 Thread(s)	Check the connection to the overpipe, that's where most leaks usually come from from header installs __________________ AVO Stage 2 Turbo Build Thread https://wheelwell.com/tyler-nguyen-1...014-scion-fr-s

12-14-2017, 04:00 PM	#5
Token11b Senior Member Join Date: Sep 2015 Drives: 2013 Scion FR-S Location: Goodyear,Az Posts: 146 Thanks: 4 Thanked 57 Times in 38 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	You'll have a smell for a little while while the exhaust heat burns off the coatings and other things. It'll go away. I run a gruppe s uel also. __________________ 2013 Scion FRS Firestorm- Current mods: Gruppe-S UEL Headers w/overpipe, Perrin intake tube w/drop in filter Perrin 3" catback, OFT stage 2 turn

12-14-2017, 05:17 PM	#7
finch1750 Undisputed El Presidente Join Date: Jun 2012 Drives: Zenki 37J ZN6 Location: Stockton, CA Posts: 11,571 Thanks: 9,382 Thanked 9,397 Times in 5,261 Posts Mentioned: 374 Post(s) Tagged: 33 Thread(s)	Get some soapy water and spray it on the exhaust flanges when its cold. Helps to spot leaks since you'll see the suds move. Did you use all new gaskets and/or RTV? __________________ "Just like how a strut bar somehow enables you to corner 20MPH faster around a cloverleaf on-ramp, when the reality is, you can do it already but you just don't have to balls to do it." - CSG David

12-14-2017, 03:22 PM	#3
NRXRaptor Senior Member Join Date: Aug 2016 Drives: BRZ Location: Mendocino County Posts: 369 Thanks: 7 Thanked 96 Times in 75 Posts Mentioned: 4 Post(s) Tagged: 0 Thread(s)	I forgot to take a sticker off a front pipe before I installed it. It melted and I thought I melted something important before I realized. I'd wait a week to see if it goes away

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