Ext. Wastegate on BEGi Manifold
Instead of having them weld a flange to the cast mani, can I just machine the bottom flat, and drill/tap it for the wastegate, so the wastegate sits directly against the manifold? I'm sure there's something wrong with this idea, so please enlighten me.
I don't like the idea of welding cast. (None of this) http://www.bellengineering.net/image...ze/61579-1.JPG |
Its pretty thick in that area, I don't see why not. Might not get enough exhaust flow/pressure in the manifold to force enough gasses through it though.
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It's not thick enough, sorry.... You could weld on a flange as long as the WG would not hit the manifold. Welding the cast manifold is not a problem - as long as it is done correctly!!
Stephanie |
Welding cast is just fine. If you can source a older FM/Begi manifold you can drill and tap those.
Take a look at PatsMX5 manifold build: ZING! Welded properly and it will be just fine. Also if you are looking to maybe switch your manifold, there is the HKS. Check out Gianic: ZING! Older Begi/FM manifolds had thick areas that you could drill and tap: My FM3 is beefy as hell and works like a charm. http://sphotos.ak.fbcdn.net/hphotos-..._4154992_n.jpg |
seen it done on a HKS mani too.
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that manifold looks like it was designed to flow!
just build a tubular manifold... if your serious enough to get an external gate spent the $ to get a real manifold. |
Originally Posted by shlammed
(Post 614537)
that manifold looks like it was designed to flow!
just build a tubular manifold... if your serious enough to get an external gate spent the $ to get a real manifold. If the OP already has the manifold then there is no need to spend alot of cash on a new manifold and downpipe. It will be be cheaper and easier to just modify the one you already have. Plus the benefit of having a cast manifold on a daily driver. These things are built like tanks and will probably outlive the car. |
just chirpin.
but a quality manifold will last just as long as a cast manifold. |
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