Guided how to fit ATR inlet manifold to 5g prelude

Adrianh22 · Post by **Adrianh22** » Thu Nov 23, 2017 12:21 pm

Hi guys just purchased an ATR inlet manifold and need a bit of help on how to fit
Cheers

nitin_s1 · Post by **nitin_s1** » Thu Nov 23, 2017 12:32 pm

http://www.extremeprelude.com/euror.html

Adrianh22 · Post by **Adrianh22** » Thu Nov 23, 2017 2:23 pm

nitin_s1 wrote:http://www.extremeprelude.com/euror.html

cheers mate very much appreciated!

thusee · Post by **thusee** » Thu Nov 23, 2017 3:47 pm

be sure to look up rosko racing website for the porting work you need to do to the euro r manifold.

You don't just slap it on the motor and call it a day, there is some modifying involved and adapters to be purchased to make it work.

Adrianh22 · Post by **Adrianh22** » Thu Nov 23, 2017 4:33 pm

The fuel rail adapter and iacv adapter?

thusee · Post by **thusee** » Thu Nov 23, 2017 4:59 pm

It is not just adapters you need, there is some porting involved if you are using the stock injectors as the spray pattern on the h22a4 and euro r injectors is different.

http://www.ludegeneration.co.uk/profile ... 4-370.html

You can check my post as well i have a comparison picture i posted, the port on the right is the stock euro r and the port on the left is the euro r with the top portion of the inlet i had ported wider. That picture is not fully done it was just in the process.

I can post a better picture once i get it out from behind my car lol, i put it away because it started getting too cold to work in the garage here.

thusee · Post by **thusee** » Thu Nov 23, 2017 5:01 pm

Also the tiny holes above the intake runners need to be plugged as well. If you haven't done any reading on what needs to be done i suggest you do look up rosko's "how to".

http://roskoracing.com/TechBlog/?p=87

Adrianh22 · Post by **Adrianh22** » Fri Nov 24, 2017 11:10 am

thusee wrote:Also the tiny holes above the intake runners need to be plugged as well. If you haven't done any reading on what needs to be done i suggest you do look up rosko's "how to".

http://roskoracing.com/TechBlog/?p=87

thanks for the advice will have a look

TitzonToast · Post by **TitzonToast** » Tue Apr 24, 2018 6:35 pm

Sorry to bump this old thread, I'm getting ready to install my ATR IM and I had Rosco's modification guide bookmarked so I could use it when the time came.

He seems to have taken it down though, I bought two adapters from him a couple of months ago but I wasn't ready to do the swap then.

From what I remember, there's a little bit of grinding to be done over ports 1 & 2 and there are four little holes that need to be plugged.
Can anyone here remember what else I might need to do please?
The intake I bought is complete with fuel injectors, fuel rail and TB in place.

Post by **NafemanNathan** » Tue Apr 24, 2018 7:10 pm

Yeah, you have to grind chamfers on the edge underneath each of the 4 runners where the manifold meets the head. Thus is so it doesn't foul on part of the casting on the P13 head.

Then you plug those 4 little ports. They're part of the ATR's EGR system.

Depending on what injectors you're using you may need to port the injector ports to ensure the fuel does spray on the inside of them and just drip down.