Exhaust nuts seized that connect to manifold help and info please. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Btc10 · 02-21-2011, 01:29 AM

I went the other day to take off my exhaust off from the passenger side and driver side so I can let it down so I can drop my oil pan. Well I went to take the nut off of the passenger side exhaust ( located if looking at the manifold on the passenger side.. Bottom left ) where the exhaust connect to the manifold. But I went to take the nut off and it was seized up and it stripped right off like butter from turning the wrench. Is there an easier way to take of the exhaust nuts thats bolted to the manifold?

Jacfourteen · 02-21-2011, 03:33 AM

I've found that penetrating oil (put on as far in advance as possible) will help out a great deal. also when you put it back together use anti seize on it for the next time around. As far as getting the nut off that is on there I can't help you out, hopefully someone will chime in.

jrdv · 02-21-2011, 10:40 AM

You will need to take the manifold off and put it in a vise.
Spray it down with penetrating oil and use vise grips to twist it out.
You may have to use a propane torch to add some heat to the manifold.
Replace all bolts with new ones. Get the ones with the long brass nuts.

John

Btc10 · 02-22-2011, 09:26 PM

I put WD-40 on them for about a 2 months and I finally got the passenger side of yesterday by just kind of working the nut and the drivers side came off easy. So WD-40 is the way to go. Thanks for your time and info.

1968SWBBigBlock · 02-22-2011, 10:24 PM

Heat is your best freind
also give these a try - they will bite really well into the rounded off bolt head
http://www.sears.com/shc/s/p_10153_12605_00952166000P

Tx Firefighter · 02-23-2011, 08:43 AM

I've yet to see a nut that won't come off if you heat it cherry red with a torch.

Rochlow · 02-23-2011, 09:45 AM

Quote:

Originally Posted by Tx Firefighter

I've yet to see a nut that won't come off if you heat it cherry red with a torch.

Word!!

PanelDeland · 02-23-2011, 06:50 PM

Quote:

Originally Posted by Btc10

I put WD-40 on them for about a 2 months and I finally got the passenger side of yesterday by just kind of working the nut and the drivers side came off easy. So WD-40 is the way to go. Thanks for your time and info.

This is part of your problem.WD-40 is short for "Water Displacement" formula 40.You need a penetrating oil.Kroil,PB Blaster, or something that really penetrates and helps loosen the bolt/nut.WD-40 is mostly a solvent.

**truckdude239** · 02-23-2011, 06:56 PM

PB Blaster 2 or 3 times a day for like 2 days they will come right off

OhOneWS6 · 02-23-2011, 07:09 PM

Used brake fluid works really well too. Gotta be used not new.

sjarrett71 · 02-23-2011, 07:41 PM

Nut splitter?

02-21-2011, 01:29 AM	#1
Btc10 Registered User Join Date: Feb 2010 Location: Joshua, Texas Posts: 60	Exhaust nuts seized that connect to manifold help and info please. I went the other day to take off my exhaust off from the passenger side and driver side so I can let it down so I can drop my oil pan. Well I went to take the nut off of the passenger side exhaust ( located if looking at the manifold on the passenger side.. Bottom left ) where the exhaust connect to the manifold. But I went to take the nut off and it was seized up and it stripped right off like butter from turning the wrench. Is there an easier way to take of the exhaust nuts thats bolted to the manifold?

02-21-2011, 03:33 AM	#2
Jacfourteen Big Red - Now its a SWB! Join Date: Jun 2009 Location: Oroville, Ca Posts: 1,624	Re: Exhaust nuts seized that connect to manifold help and info please. I've found that penetrating oil (put on as far in advance as possible) will help out a great deal. also when you put it back together use anti seize on it for the next time around. As far as getting the nut off that is on there I can't help you out, hopefully someone will chime in. __________________ 68 3/4 ton (Project)-350 Small Block, .030 over, 10:1 comp, 3998993 heads, C3BX edelbrock intake, comp cams XE268, Holley 670 SA, long tube headers, dual flow 40's, E-fan, Alum rad, currently under the knife getting shortened and bagged build thread 41 3/4 ton (wife's)-flatbed, fully restored to original 01 Tahoe LT 4WD (my daily driver)-Magnaflow Muffler, Rollin on 22's 02 Ford Mustang Convertable (Wife's Car)-Flowmaster 50, Clear corners, Intake, sittin on 18's

02-21-2011, 10:40 AM	#3
jrdv Registered User Join Date: Apr 2000 Location: new mexico Posts: 948	Re: Exhaust nuts seized that connect to manifold help and info please. You will need to take the manifold off and put it in a vise. Spray it down with penetrating oil and use vise grips to twist it out. You may have to use a propane torch to add some heat to the manifold. Replace all bolts with new ones. Get the ones with the long brass nuts. John __________________ 1972 3/4T 4x4 Chevrolet (383) 1971 c-10 SWB (400 sb) 1972 4x4 Blazer 1969 SWB 4x4 GMC Projects: 1972 stepside 4x4 http://67-72chevytrucks.com/vboard/s...d.php?t=280132 http://67-72chevytrucks.com/vboard/s...d.php?t=285952 http://67-72chevytrucks.com/vboard/s...d.php?t=553672 http://67-72chevytrucks.com/vboard/s...d.php?t=522704

02-22-2011, 09:26 PM	#4
Btc10 Registered User Join Date: Feb 2010 Location: Joshua, Texas Posts: 60	Re: Exhaust nuts seized that connect to manifold help and info please. I put WD-40 on them for about a 2 months and I finally got the passenger side of yesterday by just kind of working the nut and the drivers side came off easy. So WD-40 is the way to go. Thanks for your time and info.

02-22-2011, 10:24 PM	#5
1968SWBBigBlock Active Member Join Date: Oct 2006 Location: Ohio Posts: 1,643	Re: Exhaust nuts seized that connect to manifold help and info please. Heat is your best freind also give these a try - they will bite really well into the rounded off bolt head http://www.sears.com/shc/s/p_10153_12605_00952166000P __________________ 1968 SWB 454 + .040, 490HP x 540 FT pounds of Torque 10-1 Kb Forged pistons, recon rods w/ ARP wave loc bolts 781 heads Ported with 2.19/1.88 SSTvalves Lunati 60204 cam, Micro Trol lifters, Ported Edelbrock Performer Rpm manifold armor coated, Pertronix Triple Strike Ignition Holley 770 Street Avenger carb,Headers armor coated Built by Watson Ruppel Performance in Sarahsville Ohio. Hardshift Tranny Built Turbo 350,TSI 10" 3000 stall 12 Bolt Eaton Posi 4.10 Richmond Gears moser axles 18.5" x 31" Hoosier Pro Street Radials ET Classic 5 Wheels - polished Power Steering, Power Brakes,Disc Brakes,Tach & Gauge Dash, Tilt,Factory Air (gone) Custom Paint & Body Work Special thanks to my wife, my son and my money tree

02-23-2011, 08:43 AM	#6
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	Re: Exhaust nuts seized that connect to manifold help and info please. I've yet to see a nut that won't come off if you heat it cherry red with a torch. __________________ I'm on the Instagram- @Gearhead_Kevin

02-23-2011, 06:56 PM	#9
truckdude239 Senior Member Join Date: Sep 2005 Location: Lewisville, Nc Posts: 10,234	Re: Exhaust nuts seized that connect to manifold help and info please. PB Blaster 2 or 3 times a day for like 2 days they will come right off __________________ David fuller Ase Certified Mechanic Click here to help support our board!! 1971 Chevy c-10 under going a 4.8l LSx swap Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=421305 2007 Honda Accord my daily 145kmiles 2002 Honda Accord 4 door With 330k(sisters car) 2005 toyota Avalon 228k( brothers car) 2002 Sububran 5.3 245k 2000 Tahoe 5.3l 378 General manager for Marco's Carwash & lube

02-23-2011, 07:09 PM	#10
OhOneWS6 Registered User Join Date: Dec 2009 Location: DFW, TX Posts: 764	Re: Exhaust nuts seized that connect to manifold help and info please. Used brake fluid works really well too. Gotta be used not new. __________________ 72 Cheyenne Super 1/2 LWB White/Dark Yellow 07 Avalanche 2LT 74 Sleek Craft Rebel Jet Boat W/Pontiac 400 Last edited by OhOneWS6; 02-23-2011 at 07:09 PM.

02-23-2011, 07:41 PM	#11
sjarrett71 Registered User Join Date: Dec 2006 Location: Rolla, MO Posts: 2,463	Re: Exhaust nuts seized that connect to manifold help and info please. Nut splitter? __________________ -Scott-



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