Aces High Bulletin Board
General Forums => The O' Club => Topic started by: fbWldcat on September 05, 2010, 07:08:30 AM
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Hey guys, just a quick question, I need a new exhaust manifold for my car, it has a decent crack down the middle and I was wondering, should I buy a new one or go to a scrap yard and pick one out? The latter is cheaper, but I have no idea what the quality is and I have to work to get in and out of all the cars. I also need a couple of other important things on my vehicle, but the manifold is the only one I can remember at this point. :lol
Thanks :cheers:
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you got a welder? if not go get a manifold at the junkyard is what i'd do.
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you might be able to weld it up if you have a welding shop close. Might be faster and cheaper than junkyard.
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The crack is too big to weld.
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you got a welder? if not go get a manifold at the junkyard is what i'd do.
+3
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Get the one from the scrapyard, but get a new gasket.
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well a couple quick dumb questions
1 what kind of vehicle and what size type motor
2 is it a turbo
3 does your vehicle have a sports package or high performance package (either mechanical or just in the comp and tuning)
4 what material is the exhaust manifold on your vehicle made from
5 do you know if your vehicle type was noted for cracking the exhaust manifold or is your an exception
6 is your O2 sensor located in the manifold
7 do you have any smog/air lines plumbed into the manifold
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Some exhaust manifolds are prone to cracking, and finding one in good shape in the salvage yard may prove to be difficult. If you ever owned a Ford truck with a (360/390) FE engine you probably know what I'm talking about. The Cummins 6BTA used in Dodge trucks also has an issue cracking the exhaust manifold.
If cracking is not common in your application then I would definitely look at getting one used. Take a metal straight edge and a wire brush with you. Check the mounting surface for warpage, and the over all piece for any obvious damage or cracking.
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If you buy used count on having it refaced before installation as it is likely to be warped. That may tip the price to new a bit.
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well a couple quick dumb questions.
Wow, thanks, that was really asking nicely :rolleyes:.
1. 1996 Toyota Corolla XE.
2. No, not a turbo
3. It isn't sport at all
4. I think it is (was) a zinc plated iron manifold, I think the zinc has since oxidized away and the iron is now rusting.
5. no
6. not sure
I'm not sure but very doubtful. I haven't seen one on it.
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well your set up sounds pretty basic. you shouldn't have any issues with swapping it out for a bone yard replacement as long as you inspect the replacement thoroughly and prep it before installation. the only thing that would give me pause in the use of a second hand part is the likely lack of the factory coating remaining on a used one. but as this type of coating serves no real purpose except to inhibit rusting and some engine compartment heat reduction, i wouldn't really worry much about it. the car is almost 15 years old already and it is likely too, if not already, developing rust within the hidden spots of the subframe chasis mounting points and body panels. Toyota power trains if maintained will run forever, but they will almost always drive themselves right out of the rotting shell that surrounds them :)
if you can get a quality second hand part and save yourself some money then it is definitely the way to go.
buy the way i wasn't implying that you were dumb :) i meant only that the information was basic and simple. just a poor way choice of words.
:salute and good luck
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well your set up sounds pretty basic. you shouldn't have any issues with swapping it out for a bone yard replacement as long as you inspect the replacement thoroughly and prep it before installation. the only thing that would give me pause in the use of a second hand part is the likely lack of the factory coating remaining on a used one. but as this type of coating serves no real purpose except to inhibit rusting and some engine compartment heat reduction, i wouldn't really worry much about it. the car is almost 15 years old already and it is likely too, if not already, developing rust within the hidden spots of the subframe chasis mounting points and body panels. Toyota power trains if maintained will run forever, but they will almost always drive themselves right out of the rotting shell that surrounds them :)
if you can get a quality second hand part and save yourself some money then it is definitely the way to go.
buy the way i wasn't implying that you were dumb :) i meant only that the information was basic and simple. just a poor way choice of words.
:salute and good luck
Not a problem. Yes, there are many rusted things in the bottom, the chassis is in dire need of a sanding and priming, almost the entire exhaust pipe is rusty and the bolt that holds in transmission fluid is so rusty it leaks from time to time.
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Its very common on corrolas, new one will go for about $100-130 aftermarket. Get a new one, very easy to replace. If you have the right tools it'll take about 30 min.
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Wow, thanks, that was really asking nicely :rolleyes:.
1. 1996 Toyota Corolla XE.
2. No, not a turbo
3. It isn't sport at all
4. I think it is (was) a zinc plated iron manifold, I think the zinc has since oxidized away and the iron is now rusting.
5. no
6. not sure
I'm not sure but very doubtful. I haven't seen one on it.
you should have a 1.6 or a 1.8 then? they're fairly common for cracking. you can check aftermarket....someone that deals with doorman. they make aftermarket manifolds, and are pretty cheap and affordable.
if not, try car-parts.com.
select year, make, model, search area, and you'll get a list of reputable scrap yards thathave your part in stock. often, they;ll have a price there too.
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Thanks guys, some great help!
:cheers:
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Aren't most exhaust manifolds cast iron? Have you ever tried to weld cast iron?
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If it was zinc plated I doubt that it would be cast. Probably just steel tubing.
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Aren't most exhaust manifolds cast iron? Have you ever tried to weld cast iron?
some of the imports come with a cross between a header, and a manifold. these are usually steel.
corrola, i think comes with a cast iron exhaust manifold. it is possible to weld it, but it is difficult. with the time and difficulty involved, it would be better and easier to install a new/used one.
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car-parts.com (http://car-parts.com)
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some of the imports come with a cross between a header, and a manifold. these are usually steel.
corrola, i think comes with a cast iron exhaust manifold. it is possible to weld it, but it is difficult. with the time and difficulty involved, it would be better and easier to install a new/used one.
Took a welding course many many years ago when I was 20.
Old time teacher back then taught us that when trying to weld cast to mild steel you were technically supposed to use Nyrod (sp?) But. In a pinch using stainless welding rods worked just as well. Course this was with stick welding.
I actually at the time put this to the test when somene from another shop gave me the head to a HD flathead engine that had this part at the top broken off where a bolt connected to it. Giving no promises I fabricated a peice out of mild steel and welded it in place using stainless rod. I dont know how long it held other then I know it did hold at least 2 years that way which was the last I remember hearing about it second hand.
I'd almost forgottenabout this till this thread. Teacher was a great but a bit kooky old coot with an ornery side to him. Was a welder in the 3rd army during WWII who didnt mind at all telling us stories about him literally crapping his pants when the shelling started.
That and always told us that "By the book is great when your in school. and I'll teach you by the book. But often in the real world you have to throw the &)#(#@ book out because there are times when its !(#*!#@ useless. Im gonna teach you what to do then too."
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Its very common on corrolas, new one will go for about $100-130 aftermarket. Get a new one, very easy to replace. If you have the right tools it'll take about 30 min.
Yup,a quality aftermarket manifold is the way to go,do some research though as there alot of junk being sold as socalled "performance" parts.
:salute
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Took another look at it today, definitely cast iron, no two peice about it.
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A cast iron manifold is a pretty stressed (thermally) piece, even if you repair the weld it will have a tendency to crack even easier. If you count the cost of having it welded properly at a shop your easily in the new part price range. Yes, it can be welded but I would advise against it as the potential aggravation of having to the job again is worth the increased cost anyway.
Strip