How can I unbolt exhaust?

Kenny Pollock · 07-30-2007, 06:53 PM

Trying to get the exhaust off of the manifold... I have the body off so the bolt is easy to get to..

But I can't find the size of the bolts, I've tried everything... 7mm fit it good, then I twisted, it didn't move, and then it started to strip it a little

Xtreme24 · 07-30-2007, 07:09 PM

7mm for the exhaust manifold to the y pipe?

S10dude · 07-30-2007, 08:14 PM

i'm not sure what size it is ...but i am sure it's NOT 7mm....

Xtreme24 · 07-30-2007, 08:20 PM

i haven't even looked but i'm gunna guess its 13mm or 15mm

PickWick31337 · 07-30-2007, 08:56 PM

or 14 mm

95 S_Trucker · 07-30-2007, 09:22 PM

I did the collector gaskets on my truck. The original nuts were 13 mm. I got new studs and nuts and springs because I broke some of them. The new hardware was 9/16.

Dont be surprised if you break some studs.

Kenny Pollock · 07-31-2007, 12:41 AM

I'm talking about y pipe to exhaust manifold... might just be easier to take the whole damn manifold off?

yourname · 07-31-2007, 01:06 AM

i thought it was like 14mm or 9/16

95 S_Trucker · 07-31-2007, 05:35 PM

Quote: Originally Posted by Kenny Pollock

I'm talking about y pipe to exhaust manifold... might just be easier to take the whole damn manifold off?

So was I. The collector gaskets are the gaskets in between the y-pipe and the manifold.

I wouldnt take off the manifold. just soak it good with penetrating oil and use a 6 point socket. you might wanna buy a hardened socket because I broke two sockets trying to get mine out because they werent hardened

NCHEVYHEVN · 07-31-2007, 05:45 PM

Just about all new GM bolts are 7mm, 8mm, 10mm, 13mm, 15mm, 18mm.

They don't really use 14mm from what I've seen anymore. Just on the old crap.

And I don't think your turning the right peice. I think those bolts actually have little springs on them or something like that I thought. Should be a 13mm or a 15mm.

Kenny Pollock · 08-01-2007, 02:56 PM

This is where I'm trying to unbolt it...

cpolaris502 · 08-01-2007, 05:34 PM

just like all of them said, spray some good penetrating oil on there and try breaking it loose after a good soak. its probably 13-15mm

NCHEVYHEVN · 08-01-2007, 05:36 PM

Your trying to turn the wrong thing. You need to turn the nut. The nut may come off or the whole stud may come out.

02_Black_XBlazer · 08-01-2007, 06:05 PM

Put a 3/8" or 1/2" drive ratchet with the appropriate socket on the nut, then get yourself a piece of conduit or steel tubing over the end, as long as you can make fit in tight confines, and use the bar as leverage.
Once you've already heeded everyone else's advice about a good soak with some penetrant of your choosing, that is.

Kenny Pollock · 08-02-2007, 10:11 AM

I didn't even notice there were nuts on it... I am blind!

Thanks guys. It was a 15. Took me two seconds, only one of them was a PITA

BudRacing · 08-02-2007, 06:22 PM

LOL. It happens to the best of us

07-30-2007, 06:53 PM	#1
Kenny Pollock Registered User Age: 19 Join Date: Jan 2007 Posts: 1,033 Location: Hollywood, FL User is: OffLine	How can I unbolt exhaust? Trying to get the exhaust off of the manifold... I have the body off so the bolt is easy to get to.. But I can't find the size of the bolts, I've tried everything... 7mm fit it good, then I twisted, it didn't move, and then it started to strip it a little
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07-30-2007, 07:09 PM	#2
Xtreme24 DeXtreme on 20/22's Age: 23 Join Date: May 2003 Posts: 4,267 Location: DFW, Texas User is: OffLine	Re: How can I unbolt exhaust? 7mm for the exhaust manifold to the y pipe?
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07-30-2007, 08:14 PM	#3
S10dude workin it ! Join Date: May 2006 Posts: 11,029 Location: Sacramento,Ca. User is: OffLine	Re: How can I unbolt exhaust? i'm not sure what size it is ...but i am sure it's NOT 7mm....
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07-30-2007, 08:20 PM	#4
Xtreme24 DeXtreme on 20/22's Age: 23 Join Date: May 2003 Posts: 4,267 Location: DFW, Texas User is: OffLine	Re: How can I unbolt exhaust? i haven't even looked but i'm gunna guess its 13mm or 15mm
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07-30-2007, 08:56 PM	#5
PickWick31337 Registered User Join Date: Mar 2007 Posts: 96 Location: Carthage Texas 75633 User is: OffLine	Re: How can I unbolt exhaust? or 14 mm
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07-30-2007, 09:22 PM	#6
95 S_Trucker no longer has a 95 Age: 20 Join Date: Jan 2007 Posts: 1,715 Location: Lancaster, PA User is: OffLine	Re: How can I unbolt exhaust? I did the collector gaskets on my truck. The original nuts were 13 mm. I got new studs and nuts and springs because I broke some of them. The new hardware was 9/16. Dont be surprised if you break some studs.
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07-31-2007, 12:41 AM	#7
Kenny Pollock Registered User Age: 19 Join Date: Jan 2007 Posts: 1,033 Location: Hollywood, FL User is: OffLine	Re: How can I unbolt exhaust? I'm talking about y pipe to exhaust manifold... might just be easier to take the whole damn manifold off?
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07-31-2007, 01:06 AM	#8
yourname 94 Noma, 95 Jimmy Age: 20 Join Date: Jul 2005 Posts: 580 Location: toledo User is: OffLine	Re: How can I unbolt exhaust? i thought it was like 14mm or 9/16
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07-31-2007, 05:35 PM	#9
95 S_Trucker no longer has a 95 Age: 20 Join Date: Jan 2007 Posts: 1,715 Location: Lancaster, PA User is: OffLine	Re: How can I unbolt exhaust? Quote: Originally Posted by Kenny Pollock I'm talking about y pipe to exhaust manifold... might just be easier to take the whole damn manifold off? So was I. The collector gaskets are the gaskets in between the y-pipe and the manifold. I wouldnt take off the manifold. just soak it good with penetrating oil and use a 6 point socket. you might wanna buy a hardened socket because I broke two sockets trying to get mine out because they werent hardened Last edited by 95 S_Trucker : 07-31-2007 at 05:37 PM.
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07-31-2007, 05:45 PM	#10
NCHEVYHEVN NTBSSHEVN Age: 23 Join Date: Nov 2003 Posts: 9,190 Location: Creedmoor, NC User is: OffLine	Re: How can I unbolt exhaust? Just about all new GM bolts are 7mm, 8mm, 10mm, 13mm, 15mm, 18mm. They don't really use 14mm from what I've seen anymore. Just on the old crap. And I don't think your turning the right peice. I think those bolts actually have little springs on them or something like that I thought. Should be a 13mm or a 15mm.
	[Reply w/Quote]

08-01-2007, 02:56 PM	#11
Kenny Pollock Registered User Age: 19 Join Date: Jan 2007 Posts: 1,033 Location: Hollywood, FL User is: OffLine	Re: How can I unbolt exhaust? This is where I'm trying to unbolt it...
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08-01-2007, 05:34 PM	#12
cpolaris502 The Dreamsicle Age: 20 Join Date: Jul 2005 Posts: 16,054 Location: Rogers, MN User is: OffLine	Re: How can I unbolt exhaust? just like all of them said, spray some good penetrating oil on there and try breaking it loose after a good soak. its probably 13-15mm
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08-01-2007, 05:36 PM	#13
NCHEVYHEVN NTBSSHEVN Age: 23 Join Date: Nov 2003 Posts: 9,190 Location: Creedmoor, NC User is: OffLine	Re: How can I unbolt exhaust? Your trying to turn the wrong thing. You need to turn the nut. The nut may come off or the whole stud may come out.
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08-01-2007, 06:05 PM	#14
02_Black_XBlazer Starting from scratch... Join Date: Nov 2005 Posts: 3,331 Location: Over By There, IL User is: OffLine	Re: How can I unbolt exhaust? Put a 3/8" or 1/2" drive ratchet with the appropriate socket on the nut, then get yourself a piece of conduit or steel tubing over the end, as long as you can make fit in tight confines, and use the bar as leverage. Once you've already heeded everyone else's advice about a good soak with some penetrant of your choosing, that is.
	[Reply w/Quote]

08-02-2007, 10:11 AM	#15
Kenny Pollock Registered User Age: 19 Join Date: Jan 2007 Posts: 1,033 Location: Hollywood, FL User is: OffLine	Re: How can I unbolt exhaust? I didn't even notice there were nuts on it... I am blind! Thanks guys. It was a 15. Took me two seconds, only one of them was a PITA
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08-02-2007, 06:22 PM	#16
BudRacing Molon Labe Age: 23 Join Date: Aug 2004 Posts: 4,924 Location: Statesboro, Ga User is: OffLine	Re: How can I unbolt exhaust? LOL. It happens to the best of us
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