Rb25Det Greddy Style Intake With Header Tank Water Flow

[mawzy]

Hi all, done a bitta looking around on forum, found similar threads and issues, but couldn't quite clear up my uncertainties, so thought would start this topic, and get peoples input.

I'm doing a Bolton upgrade to my r34 25det neo. Reasonably mild street setup, hoping to achieve 400hp. For the intake I'm using an imitation greddy plenum, and have adapted my factory r34 aac valve to suit. Due to needing more water feeds/returns (I'm not totally sure which way water flows etc so some clarification on this would be good too.) I've tapped 3 new 'feeds' into the manifold approximately where the factory ones are above the water jackets coming out the head. ( I've attached a poorly drawn picture of the whole setup)

Can anyone see any immediate issues with flow from what I've done? I've tried to stay as close as I could to factory setup, but using the header tank instead of the bleed valve at the front factory intake. If there are no issues anyone can see, my main query is with the bottom of header tank and where I should be feeding that?

Should I run it back into the connector on the thermostat housing? Or there's an unused bung in the radiator I could use a fitting in, or I can put a pipe into the radiator hose and feed into that. What do people think would be best option there? Also the aac valve has 3 fittings, At this stage I've blocked one off, is this gonna be ok? And the way I've drawn it have I got the connecting the right way?

Thanks for your thoughts and any input will be appreciated.

Rb25det water flow.pdf