More pics, baffled collector, with a sloped pan below the turbo mount to carry the exhaust gases up toward the inlet of the turbine.

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Like a Glove! as Jim Carey would say it

Mid range side mount, not a block hugger so the runners allow a bit more free flow and the collector is nice and uniform, a fabulous model this one I am very happy with the outcome, haven't sorted a price yet, lots of design time in the collector and a fair bit of precision fab work, not to mention drawing and modelling time!

Hope you like the pics. Really keen to hear your feedback gents, viva l'A-Series!

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they look porn man, you're leading the way in turbo a-series! ^_^

Great work. Encouraging A series turbo builds can only be a good thing!

Why are using RHS for where the turbo flange meets the runners? It would be better if you blended the runners at the plate.

I also see it has a divider plate inside the flange. If using a divided housing turbo, cylinders 1 and 4 should be one side of the plate and 2 and 3 the other to help spool and prevent reversion.

Have you tried one yet?

Keep up the good work.

Thanks for the encouragement!

To test how they perform I was actually going to see if you would be interested in testing three different types on your dyno, all I can do here is start and run them but the closest dyno centre is thousands of kilometres away. Perhaps we could sort out an arrangement Simon? I'm happy to pay for the testing if you are able to provide a controlled platform on which the manifolds could be fitted.

As for the RHS I'm a bit confused what you are asking, I used 3mm plate to build the shroud that leads to the flange, the pipe is big stuff at 42od so I really haven't got much movement. If I had some tighter, lighter bends I would be able to move them around a bit more.

The baffled divider was a fluke being that long, I left it there.

I'd be interested in maybe buying a mid range one if you send one to Simon to test maybe I could buy on of the 3 tester styles even if its not the best will still do for what I may have planed

clyons8,
keep up the A-series stuff coming mate!
are u able to sell or point buyers where to buy whatever else is needed to run ur setups?
so more like a package..

cheers

clyons8
that looks like my manifold I made , it works realy good. get rid of the divider you nead all those ex gases building up speed as quick as to spin the turbo to stop lag

Hi clyons8, I think sikyne was asking why don't you merge the 4 pipes tapering to the flange plate, rather than using plate as a box section to merge to the flange. Well if that's not what sikyne ment then maybe I should not butt in. Merging the 4 into 1 with a smooth flowing collector will require more work. Just spotted how close the turbo is to the strut tower, How much clearance do you have to the tower? And what size turbo is that t25 T28??