[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Equal length headers?
Has anyone heard of any equal lenght headers for the 10v, I know that equal length headers don give the same benefits on a turbo engine as on a normally aspirated engine. The only real benefit I can see is that the total cross section of the all runners will be a lot bigger than on an ordinary turbo manifold, where the cross section of the collector must not be bigger than one of the runners if you want to keep lag to a minimum. As you see on the original manifold this is not built this way and we have also got a lot of lag on the 10v. Equal length runners is of corse not a must when building headers, I haven't heard anyone say that equal length gives ANY benefit at all, over the shortest possible path. If I start this stupid project this is the preliminary plan: The turbo will be relocated further back. The downpipe will be replaced. The cold side plumbing will also be replaced. The largest problem I see is the wastegate, at first I was planning on a short collector before turbo where the wastegate is placed, but a collector is a nono is these apps. The other way to go is that each runner has a T in them near the turbine that leads exhaust gases to the wastegate. The must probably be installed near the turbine. I really should replace the turbo with a Mitsubishi unit but my KKK K24 has only got 1K miles on it, I didn't know that the 10v has separeat bolts for the exhaust and intake manifolds by then. This is the reason that I even consider making my own headers. A friend was willing to sell me his stock Syclone turbo for almost nothing, but as it is a bit large for my car it needs good headers to spool quick. And to fit :-) Jörgen Karlsson Gothenburg, Sweden jurg@axs-memory.se Audi 200 TQ -85
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