my first 4" Aluminum exhaust
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From: Tampa, FL
my first 4" Aluminum exhaust
finally got a victim (boss) to let me build an aluminum exhaust. sounds bad ***. much quieter then i thought it would be. hes running stock twins (2jzgte) currently, but we'll probably throw a t67 on it pretty soon. only 70 degrees of bending in the whole exhaust.
i didnt' get pictures with the hangers on, but my jdm 3/32 welding rod did the trick for tooling around the yard. i just put two hangers in the back, but i'm thinking i'll have to put a couple more on the mid section somewhere.
anyone have ideas on how to attach hangers to the aluminum? i was thinking about welding 1/4~3/8" tabs on that be drilled and tapped, then bolt steel hangers to those. any pics of other setups?
Modified by manifoldmiketyson at 2:25 AM 11/27/2007
i didnt' get pictures with the hangers on, but my jdm 3/32 welding rod did the trick for tooling around the yard. i just put two hangers in the back, but i'm thinking i'll have to put a couple more on the mid section somewhere.
anyone have ideas on how to attach hangers to the aluminum? i was thinking about welding 1/4~3/8" tabs on that be drilled and tapped, then bolt steel hangers to those. any pics of other setups?
Modified by manifoldmiketyson at 2:25 AM 11/27/2007
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From: BeLlInGhAm, Wa
Re: my first 4" Aluminum exhaust (intense4thgen)
wrap some aluminum bar around 90 degrees of the tube and weld it so it has a large surface area of weld on it. then use it for the hanger
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Re: my first 4" Aluminum exhaust (GenIIIMrDuece)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GenIIIMrDuece »</TD></TR><TR><TD CLASS="quote">i heard a rumor that your second aluminum 5" exhaust is on a 1000hp mr2? is that correct?
</TD></TR></TABLE>
you are correct. 5"? thats a aero muffler for a diesel. figured we would see how it would sound. were going to put a magnaflow on it to see if there is any difference in sound.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by new2novas »</TD></TR><TR><TD CLASS="quote">when you make those bends using multiple peices are you using peices cut from a mandrel bend or a straight peice</TD></TR></TABLE>
those are 10 degree cuts from a straight pipe with a centerline radius of 4". all the cuts are within .001. pipe is 4" od tube with a .120 wall. pretty thick stuff, but still a decent amount of weight loss. smallest radius you can get with a wall like that is 9~10 inch, so i would have had to cut them up anyways and the mandrel wouldn't have really helped that much.
it was a lot of fun to build. only took about 6 hours start to finish.
</TD></TR></TABLE>you are correct. 5"? thats a aero muffler for a diesel. figured we would see how it would sound. were going to put a magnaflow on it to see if there is any difference in sound.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by new2novas »</TD></TR><TR><TD CLASS="quote">when you make those bends using multiple peices are you using peices cut from a mandrel bend or a straight peice</TD></TR></TABLE>
those are 10 degree cuts from a straight pipe with a centerline radius of 4". all the cuts are within .001. pipe is 4" od tube with a .120 wall. pretty thick stuff, but still a decent amount of weight loss. smallest radius you can get with a wall like that is 9~10 inch, so i would have had to cut them up anyways and the mandrel wouldn't have really helped that much.
it was a lot of fun to build. only took about 6 hours start to finish.
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From: Ephrata, PA, USA
Re: my first 4" Aluminum exhaust (manifoldmiketyson)
You can also weld on "patch" plates and then weld the hanger to that. Should help spread the hanger attachment load out some, and if it ever gets ripped off, it'll rip off the plate first. See rear hanger:
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From: Ephrata, PA, USA
Re: my first 4" Aluminum exhaust (manifoldmiketyson)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manifoldmiketyson »</TD></TR><TR><TD CLASS="quote">so your using aluminum rod for the hangers and it holds up decent?</TD></TR></TABLE>
So far, but it's on mostly a track car that's been out and driven maybe one handful this past year. I'm using 1/4" or 3/8" rod, but I would suggest going with something larger. I'll try to take some pics of the hangers tomorrow as I doubled them up and/or cross braced some to add strength.
So far, but it's on mostly a track car that's been out and driven maybe one handful this past year. I'm using 1/4" or 3/8" rod, but I would suggest going with something larger. I'll try to take some pics of the hangers tomorrow as I doubled them up and/or cross braced some to add strength.
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From: mother russia
Re: my first 4" Aluminum exhaust (manifoldmiketyson)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manifoldmiketyson »</TD></TR><TR><TD CLASS="quote"> only 70 degrees of bending in the whole exhaust.
]</TD></TR></TABLE>
totally serious question here/ not being a smart ***...
what is the significance of that statement. i assume that since you mentioned it that it "means" something and therefore i am assuming that you are adding up all of the bends and listing the total number of degrees through out the system. right?
i have never heard anyone speak of an exhaust system in that manner. is there some formula for exhaust efficiency that the figure of 70 degrees is compared against. some rule of thumb?
lastly, do people generally consider 70 degrees of combined bends to have a similar effect on exhaust flow as 70 degrees in a single bend?
again, i've never heard someone speak of exhausts in such a manner and im just wondering what you mean.
]</TD></TR></TABLE>
totally serious question here/ not being a smart ***...
what is the significance of that statement. i assume that since you mentioned it that it "means" something and therefore i am assuming that you are adding up all of the bends and listing the total number of degrees through out the system. right?
i have never heard anyone speak of an exhaust system in that manner. is there some formula for exhaust efficiency that the figure of 70 degrees is compared against. some rule of thumb?
lastly, do people generally consider 70 degrees of combined bends to have a similar effect on exhaust flow as 70 degrees in a single bend?
again, i've never heard someone speak of exhausts in such a manner and im just wondering what you mean.
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Re: my first 4" Aluminum exhaust (Mr.E.G.)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.E.G. »</TD></TR><TR><TD CLASS="quote">
totally serious question here/ not being a smart ***...
what is the significance of that statement. i assume that since you mentioned it that it "means" something and therefore i am assuming that you are adding up all of the bends and listing the total number of degrees through out the system. right?
i have never heard anyone speak of an exhaust system in that manner. is there some formula for exhaust efficiency that the figure of 70 degrees is compared against. some rule of thumb?
lastly, do people generally consider 70 degrees of combined bends to have a similar effect on exhaust flow as 70 degrees in a single bend?
again, i've never heard someone speak of exhausts in such a manner and im just wondering what you mean. </TD></TR></TABLE>
wow, guess i should have just said its pretty straight. less bends the better usually.
totally serious question here/ not being a smart ***...
what is the significance of that statement. i assume that since you mentioned it that it "means" something and therefore i am assuming that you are adding up all of the bends and listing the total number of degrees through out the system. right?
i have never heard anyone speak of an exhaust system in that manner. is there some formula for exhaust efficiency that the figure of 70 degrees is compared against. some rule of thumb?
lastly, do people generally consider 70 degrees of combined bends to have a similar effect on exhaust flow as 70 degrees in a single bend?
again, i've never heard someone speak of exhausts in such a manner and im just wondering what you mean.
</TD></TR></TABLE>wow, guess i should have just said its pretty straight. less bends the better usually.
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From: Madison, Wi, USA
Re: my first 4" Aluminum exhaust (manifoldmiketyson)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manifoldmiketyson »</TD></TR><TR><TD CLASS="quote">somthing like this?
</TD></TR></TABLE>
I have seen them that are like that except 180 degrees around the pipe, at least on supras. No Bud-light while making the exaust Mike?
</TD></TR></TABLE>I have seen them that are like that except 180 degrees around the pipe, at least on supras. No Bud-light while making the exaust Mike?
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From: Lincoln, Ne, USA
Re: my first 4" Aluminum exhaust (tony1)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 »</TD></TR><TR><TD CLASS="quote">What's the point in using aluminum if you're going to use .120 wall? </TD></TR></TABLE>
cause aluminum makes the car sound cool, you should know that tony
cause aluminum makes the car sound cool, you should know that tony
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From: mother russia
Re: my first 4" Aluminum exhaust (manifoldmiketyson)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by manifoldmiketyson »</TD></TR><TR><TD CLASS="quote">
wow, guess i should have just said its pretty straight. less bends the better usually.</TD></TR></TABLE>
it just seemed like you pointed it out deliberately so it made me wonder if there was more significance than the fact that it was obviously pretty straight.
wow, guess i should have just said its pretty straight. less bends the better usually.</TD></TR></TABLE>
it just seemed like you pointed it out deliberately so it made me wonder if there was more significance than the fact that it was obviously pretty straight.
