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Wanted - AAZ exhaust manifold
by
Jetmugg
on 25 Jan, 2013 12:21
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Wanted - AAZ exhaust manifold. Turbo preferred, but may be able to use a N/A manifold.
Let me know what you have.
Steve M.
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#1
by
rallydiesel
on 25 Jan, 2013 12:46
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What kind of flange are you looking for?
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#2
by
blackbird82
on 25 Jan, 2013 13:05
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I have one. with the integral turbo. the little guy. Instant boost! great in a city!
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#3
by
Jetmugg
on 29 Jan, 2013 14:45
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I'm intending to use this for a land-speed racing application (1.5L diesel truck category). Throttle response is not important. Good flow is much more critical.
Steve.
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#4
by
theman53
on 29 Jan, 2013 17:27
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Steve, the 1.6 manifold will work and fit as they are the same.
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#5
by
8v-of-fury
on 29 Jan, 2013 20:39
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Turbo or naturally aspirated?
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#6
by
Jetmugg
on 30 Jan, 2013 06:59
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Maybe I should modify, start over or re-phrase my request. Some additional context might be helpful. This is for a 1.5L / AAZ headed turbodiesel setup. I already have a 1.6L non-turbo exhaust manifold sitting on the shelf, but to my eye, it looks like it wouldn't flow especially well.
Talking to my local turbo shop about this project, he recommended finding the best flowing exhaust manifold that would work with this head. The turbo flange is not critical, but if a good flowing turbo manifold is available, that might help simplify matters (it also might not). If I can come up with a good flowing exhaust manifold or shorty style tubular header, I can adapt the turbo flange from there.
The engine is going in a Dodge Rampage, and will be used for a Land Speed Racing attempt. I am free to modify the firewall for turbo and exhaust clearance. The turbo does not have to reside in a "stock" location like on a factory TD setup for a Golf/Jetta/etc. I will most likely have to weld a steel "box" onto the firewall, which will extend into the passenger's compartment to allow for additional space for the turbo and exhaust system.
I hope this explanation helps. I think that perhaps I should start a new discussion on the regular technical board.
Steve
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#7
by
8v-of-fury
on 30 Jan, 2013 09:00
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Yes I am aware
What I then would recommend is using the stock 1.6NA manifold.. as you will find from measuring the inner that mates to the exhaust system it should be like 2.5"! Most people only run 2.5" on a heavy turbo build.. So I think you will be fine to move all the air you need through that proper vw manifold.
Even take a look at the runners, they are a nice manifold. It was the downsize to 1" exhaust pipe that got them the bad rap.
))
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#8
by
Jetmugg
on 30 Jan, 2013 09:17
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Thanks for the knowledge Jeremy.
I'll do a double check of the N/A manifold. You may have just saved me a couple of hundred bucks.
Steve.
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#9
by
scrounger
on 30 Jan, 2013 11:12
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Do you have a web page or pictures of your conversion. What is the record for the class?
Thanks.
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#10
by
Jetmugg
on 30 Jan, 2013 11:25
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#11
by
scrounger
on 30 Jan, 2013 11:35
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Oh yeah!
I was thinking of the big 4wd.
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#12
by
theman53
on 30 Jan, 2013 19:26
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I remembered you Steve. You will be running a turbo and probably would be easier to have a TD manifold. What I was saying was the 1.6 TD manifold would fit and work fine. The N/A you will have to cut and weld a flange of some sort to mate a turbo to. If you are cutting and welding I would look at some flow dynamics and just cut the flange off and weld yourself up one with new mandrel bent tube, probably 1.25" to 1.5" tubing. You would want it to not be any bigger than the port pre turbo.
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#13
by
Jetmugg
on 31 Jan, 2013 08:32
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Gotcha. What I was thinking of doing was using a short run of exhaust pipe from the factory non-TD manifold, then necking it down to blend into the turbo flange.
If the consensus is to start with a TD manifold to begin with, then that's the way I'll go.
Steve.
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#14
by
theman53
on 31 Jan, 2013 18:15
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Remember the longer you go away from the combustion the less energy the turbo will have as it will have more time for the exhaust to cool.