Swoosh noise headers - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

NoobBRZ · 01-29-2018, 02:57 PM

So i installed my headerback exhaust around 12 days ago. Install took a while but thats just because of inexperience. Anyway there was one bolt that I had trouble reaching so I hand tightened it as much as i could and i couldn't fit my wrench or ratchet so i found some tiny vice grips and tried to tighten it further with that. No leaks everything was fine.

But now im starting to hear swoosh noises as if air was escaping. I've read that its normal for the tomei uel headers to make this noise because of the thinner metal used, but im so paranoid.

So, whenever im free im going to attempt to tighten everything again, but im wondering if you guys have any tips or suggestions on reaching that one bolt?

NoHaveMSG · 01-29-2018, 03:00 PM

As they heat cycle you usually need to retighten them a couple times.

NoobBRZ · 01-29-2018, 03:06 PM

Quote:

Originally Posted by NoHaveMSG

As they heat cycle you usually need to retighten them a couple times.

Will do!

guybo · 01-30-2018, 05:38 AM

Don't use vice grips

Get a socket extension get back up there and do it right. Torque those bolts where the header bolts into the block. Do it in the right pattern too (look for a YT video on how to do this). You WILL have CELs and all sorts of issues if you get it wrong.

Submarinesonce · 01-30-2018, 07:39 AM

I used a universal and a wobble extension to get to that nut. a crows foot would be better, but I didn't have one.

gtengr · 01-30-2018, 09:32 AM

Quote:

Originally Posted by NoHaveMSG

As they heat cycle you usually need to retighten them a couple times.

Yep. When I installed headers I heat cycled the engine a few times while everything was apart before doing final torque checks.

Quote:

Originally Posted by guybo

Don't use vice grips

Get a socket extension get back up there and do it right.

This.

guybo · 01-30-2018, 10:15 AM

I love me some wobble extensions!

humfrz · 01-30-2018, 08:01 PM

Quote:

Originally Posted by guybo

Don't use vice grips

Get a socket extension get back up there and do it right. Torque those bolts where the header bolts into the block. Do it in the right pattern too (look for a YT video on how to do this). You WILL have CELs and all sorts of issues if you get it wrong.

Yes boss ...... yes boss .......right away boss .........

humfrz

Ultramaroon · 01-30-2018, 11:09 PM

Quote:

Originally Posted by NoobBRZ

i couldn't fit my wrench or ratchet so i found some tiny vice grips and tried to tighten it further with that.

Make sure the flange nuts at the exhaust ports are properly torqued... but that's not the problem. Exhaust leaks at the ports make a popping sound.

I've only heard the whoosh in 2 situations, The first was when the flange nuts between my mid and rear pipe fell out. The other is the normal sound that every thin-walled header makes.

humfrz · 01-31-2018, 12:45 AM

Quote:

Originally Posted by Ultramaroon

.

So, @Ultramaroon , I reckon you wouldn't think much of my tool box .......

humfrz

humfrz · 01-31-2018, 12:51 AM

Quote:

Originally Posted by NoobBRZ

So i installed my headerback exhaust around 12 days ago. Install took a while but thats just because of inexperience. Anyway there was one bolt that I had trouble reaching so I hand tightened it as much as i could and i couldn't fit my wrench or ratchet so i found some tiny vice grips and tried to tighten it further with that. No leaks everything was fine.

But now im starting to hear swoosh noises as if air was escaping. I've read that its normal for the tomei uel headers to make this noise because of the thinner metal used, but im so paranoid.

So, whenever im free im going to attempt to tighten everything again, but im wondering if you guys have any tips or suggestions on reaching that one bolt?

Are you saying you can get ahold of that bolt with a pair of vice grips but can't get one of these on it .........??

I ......

humfrz

ermax · 01-31-2018, 08:58 AM

What "one bolt" are we talking about? All the bolts to the block are super easy to reach with just a ratchet with extension. The bolts I have a hard time with are the ones on both ends of of the over pipe. I would love to get a torque wrench on them but there isn't enough clearance. I hate torquing on swivels because it throws off the spec. At least with a crowfoot you can do the math to get the correct torque spec on the bolt. I need to get a some crowfoots for my tool box.

NoobBRZ · 01-31-2018, 11:04 AM

Quote:

Originally Posted by guybo

Don't use vice grips

Get a socket extension get back up there and do it right. Torque those bolts where the header bolts into the block. Do it in the right pattern too (look for a YT video on how to do this). You WILL have CELs and all sorts of issues if you get it wrong.

Yea excuse me noob habits lol, I have an extension I think I’m going to go buy some of those flexible joints bcuz it’s at a really weird angle

NoobBRZ · 01-31-2018, 11:06 AM

Quote:

Originally Posted by ermax

What "one bolt" are we talking about? All the bolts to the block are super easy to reach with just a ratchet with extension. The bolts I have a hard time with are the ones on both ends of of the over pipe. I would love to get a torque wrench on them but there isn't enough clearance. I hate torquing on swivels because it throws off the spec. At least with a crowfoot you can do the math to get the correct torque spec on the bolt. I need to get a some crowfoots for my tool box.

Passengers side it’s between the Tomei pipes so it’s at a really weird angle. I just bought a torque wrench and some of those flexible joints. Hopefully I can reach it.

Can anyone direct me to a thread that has the proper spec I should torque all the exhaust bolts and nuts to?

01-29-2018, 02:57 PM	#1
NoobBRZ Member Join Date: Jan 2018 Drives: Blue brz Location: New Orleans Posts: 27 Thanks: 0 Thanked 6 Times in 5 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Swoosh noise headers So i installed my headerback exhaust around 12 days ago. Install took a while but thats just because of inexperience. Anyway there was one bolt that I had trouble reaching so I hand tightened it as much as i could and i couldn't fit my wrench or ratchet so i found some tiny vice grips and tried to tighten it further with that. No leaks everything was fine. But now im starting to hear swoosh noises as if air was escaping. I've read that its normal for the tomei uel headers to make this noise because of the thinner metal used, but im so paranoid. So, whenever im free im going to attempt to tighten everything again, but im wondering if you guys have any tips or suggestions on reaching that one bolt?

01-30-2018, 07:39 AM	#5
Submarinesonce Senior Member Join Date: Mar 2017 Drives: Frs Location: Florida Posts: 130 Thanks: 21 Thanked 81 Times in 43 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I used a universal and a wobble extension to get to that nut. a crows foot would be better, but I didn't have one. __________________ JDL UEL Turbo GT2860RS, AP Racing BBK, Verus Splitter/diffuser/canards, Sard rep carbon wing, TFF bash bar, HKS hi power, Tein Flex A, Hotchkiss FSB, Radium MCB, Konig Hypergram 17x8, FS Indy 500, 6k HID, Whiteline trans bushing insert, Verus AOS, grimmspeed strut brace, Racerx oil cooler w/ setrab 619, ES steering rack bushings, Whiteline subframe bushings, Toms tails, STi mirror caps, IRP shifter, TRD Steering wheel

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01-30-2018, 05:38 AM	#4
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	Don't use vice grips Get a socket extension get back up there and do it right. Torque those bolts where the header bolts into the block. Do it in the right pattern too (look for a YT video on how to do this). You WILL have CELs and all sorts of issues if you get it wrong.

01-30-2018, 10:15 AM	#7
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	I love me some wobble extensions!

01-31-2018, 08:58 AM	#12
ermax Senior Member Join Date: Sep 2017 Drives: 2022 BRZ Limited Silver Location: Jacksonville, FL Posts: 2,532 Thanks: 882 Thanked 2,045 Times in 1,188 Posts Mentioned: 68 Post(s) Tagged: 0 Thread(s)	What "one bolt" are we talking about? All the bolts to the block are super easy to reach with just a ratchet with extension. The bolts I have a hard time with are the ones on both ends of of the over pipe. I would love to get a torque wrench on them but there isn't enough clearance. I hate torquing on swivels because it throws off the spec. At least with a crowfoot you can do the math to get the correct torque spec on the bolt. I need to get a some crowfoots for my tool box.

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