Intercooler / Piping questions.
Hello guys, i'm just making my plans on the intercooler pipin of a 1.6 99' Nb miata without AC.
I would like the biggest intercooler piping (2.5 / 64mm) possible for mine while keeping the Power Steering and not cutting to much from the chassis or other "important" parts :)) So as i calculated a 2.5' could be enought? I have seen on NA there are some problems on the hot side and they put there 2.25'. What pipe are you running, ? And what about the intercooler, i have in mind buying this size intercooler: Inlet / outlet size : 2.5" Core size : 21''x 7''x 2.5'' Full size: 27.00" (L) X 7.00" (H) X 2.50"(W) Is that to big to enter in front of the radiator ? Thank you in advance, if you have any tips for buying intercooler / install procedure please let me know. |
Use whatever size your turbo outlet is. 1.75" pipe flows more air then the stock motor can handle. So anythibf above that is fine. Quality of IC is far more important to me then size of hotside pipes.
If yoy swap to nb2 headlights you can run 2" down the hole right behind driver headlight. It's 2 45degree pipes and couplers. |
The kit I would like to buy (universal intercooler kit) has these pipes:
1x Intercooler 22'x6x 2x 90 Degree Aluminum Pipe 2.5" 2x Straight aluminum pipe 2.5" 2x 135 Degree Aluminum Pipe×2 2.5" 2x U Aluminum Pipe×2 2.5" 6x Straight Silicon Hose 2.5" (Blue ) 2x 90 Degree Silicone Hose×2 2.5"(Blue ) 16x Clamps 2.5" Is 2.5 to big for the nb / will i have to cut the chassis rails ? |
I went with 2" on the hot side, 2.5" on the cold side. No cutting needed for me.
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Silicone reducers are a handy thing here.
My last fully custom turbo build was on a '92, so not directly relateable, but I had no problem coming out of the compressor with whatever size pipe the TD04H-15G natively used (2", maybe?), running down and around the radiator, and then increasing to 2.5" to match the intercooler just before the final 2.5" silicone 90° elbow. |
To further Joe’s comment, there exist elbows that are 2” on one end, 2 1/2” on the other.
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If youre a cheap bum like me, 2" on both sides will work until you want more out of the setup
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Originally Posted by DNMakinson
(Post 1531147)
To further Joe’s comment, there exist elbows that are 2” on one end, 2 1/2” on the other.
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My FMIC actually has 2" Inlet / Outlet. So I run 2" everywhere (one kit with all the pipe) and use the 2 - 2.5 "reducer" at the Throttle Body. Easier to run 2", ESPECIALLY on the cold side.
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Originally Posted by DNMakinson
(Post 1531206)
My FMIC actually has 2" Inlet / Outlet. So I run 2" everywhere (one kit with all the pipe) and use the 2 - 2.5 "reducer" at the Throttle Body. Easier to run 2", ESPECIALLY on the cold side.
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