Looking for the sizes of the flandges, gaskets, and clamps on my stock y-pipe exhaust system.
Hi, one of the exhaust gaskets went on my 1987 2.8L V6 pontiac firebird and it sounds like a train lol, anyways I need to replace it and I don't know what the sizes are for the flanges ( i beleive that's how it's spelt), gaskets and clamps. Any kind of help would be most appreciated.
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You have a leak in the exhaust system. Have it looked at soon. You don't want to be breathing carbon monoxide while driving. If you hear a "ticking" sound while the engine is running (more predominant with a cold engine) it's most likely an exhaust manifold leak, either a bad gasket, broken stud or cracked manifold. Other possible causes could be the "donut" gaskets that seal the Y pipe to the exhaust manifolds, the Y pipe to catalytic converter gasket (if equipped).
Remove the body harness for the exhaust closet to the dounut. this should give you enoun slack to move the pipe. Assuming your clamp bolts will loosen. Loosen bolts on the doughnuts clamp. remove the clamp. Then pry the tail pipe away from the manifold and remove the old dougnut gasket. Spray it down with WD-40 and wire brush it clean. Insert new dougnut gasket and tighten new clamps down around it.
If the bolts on the clamps are rusted to bladly to loosen then cut off with a reciprcating saw or a hi speed cutting disc. Just becareful not to cut into the exhaust pipe or yourself.
sounds like a head gasket to me, check the oil and see if there are any signs of water contamination ( milky looking oil -- but this is not always the case ). if the gasket failed between the water jacket and the cylinder then you will just get the ' white smoke '( steam ) coming from the exhaust pipe,, do not run the truck until this is fixed as this can also cause cylinder and rod damage.
Before removing any component of the exhaust system, always squirt a liquid rust dissolving agent onto the fasteners for ease of removal..
Raise and support the front of the vehicle on jackstands.
Remove the exhaust pipe-to-manifold nuts.
Support the catalytic converter, then disconnect the pipe from the converter. Remove the pipe.
Remove the exhaust gaskets.
Be sure to use all new gaskets when required. Assemble the system, check the clearance and tighten the bolts to about 15-30 ft. lbs. (20-41 Nm).
Fig. 1: Front exhaust pipe connection common on vehicles with the catalytic converter not included
All clamps should be tightened to about 18-25 ft. lbs. (24-34 Nm). Do overtighten the clamps. If pipes become dented they can leak.
Changing the oil pan gasket on a GMC Yukon XL is realtively simple, but does require removal of the exhaust pipe. You will need a new oil pan gasket and a new exhaust pipe flange gasket. Put the car on ramps or jacks to access the undercarriage. Remove the exhaust pipe by removing the 3 nuts holding the exhaust pipe flange to the exhaust manifold. These nuts often rust and prior application of penetrating oil may be required to remove them without damage. Once the pipe is unbolted, work the exhaust system loose from the hanging brackets. In most cases the entire system does not have to be removed since there is enough room to remove the pan with only the front hangers removed. Drain the oil from the engine Remove the 10 mm bolts holding the pan to the block. Remove the old gasket material and scrape any remaining gasket from the block and pan. Install the new gasket. Forma-Gasket or a similar product may be used in small quantities to "glue" the new gasket in place and prevent shifting while the pan is reattached to the block. Reinsall the 10 mm bolts in a cross pattern to ensure the gasket is compressed evenly. Do not overtighten the bolts. Replace the pipe to flange gasket between the exhaust pipe and the exhaust manifold with a new part. Reattach the exhuast pipe to the hangers. Install the 3 bolts connecting the pipe flange to the exhaust manifold. Fill the engine with oil.