Thought it could be fun to show you my modified exhaust manifold, turbo and EMS which I will be using this summer

The manifold with a external Audi wastegate:










My home built T04B V-trim hybrid:




Im pretty sure this EMS is not very common on this forum?
I know its not common running a rotary engine but I thought I'll give it a try, its a great system with much support, it can handle both secondary injectors and trailing igntition.
Its not plug and play but almost.

 

Curious about the wastegate... I see what looks like diaphragm material sticking out a bit. Is it rebuilt? You are in Europe, but I'm wondering if something like that could be attainable here in the states. I need to rebuild mine, but I can't source parts for it.

 

I was toying with the idea of doing something similar with my turbo setup. The other option is to have a custom backing plate/spacer made that has a screamer pipe built in.

What diameter are the runners for the wg?

Also that wastegate seems a bit....cumbersome. How old is that thing?

 

I like your external wastegate setup, how did your welds turn out on that cast iron?

 

Maybe a dumb question, but it came to mind..

With this setup, it is possible to run both internal and external wastegates..

Using a solenoid valve, you could direct air to either one or the other, so theoretically you would switch wastegates and therefore choosing wether to run the screemerpipe or not.

I dont know if shutting off the other one would give any problems, i would think the internal wastegate mught be pushed open by the exhaust gasses.

Any thoughts on this by people with some more wastegate experience...?

 

Very interesting turbo setup, curious to see how well it works

 

Sweet manifold! That dump pipe is going to be loud though.

 

Let's see some more pics of that turbo

 

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/how-rebuild-stock-ht-18-turbo-build-hybrid-959045/page3/ Post 69 there are some more pictures

 

The wastegate is from a Audi S2, its old, 20 years or so but it works great, can handle 600HP and more.

I did use this manifold and wastegate last summer and had no problem.
I welded it alot and the welds are still fine after one season.
I dont remember what diameter the runners are but can check it next weekend.

The screamer is loud but sounds nice, here is a couple of videos with the manifold and stock turbo:
http://vimeo.com/m/28726266
http://vimeo.com/m/26477209