3" or 4" cai
#231
hey guys...how long is tooo long for the intake pipe?? i think i can make the install easy...but were talking like 6 ft or more of pipe...lol check it out. My theory is with such long and big pipe the air will have time to pick up more and more speed. What do you think? Just ideas..
Come out like so with 4" I made this templet to give me sort of an idea of what I have for real estate in the area. (slim fan is a maybe) this pipe goes down to where the AEM pipe runs. I will try and u turn and go in the front bumper area.
Maybe in this straight run is where i will reduce it down to 3.5"
I will then again U turn and come out where the air pump sits.
Right here is where I will angle right back into the TB.
Come out like so with 4" I made this templet to give me sort of an idea of what I have for real estate in the area. (slim fan is a maybe) this pipe goes down to where the AEM pipe runs. I will try and u turn and go in the front bumper area.
Maybe in this straight run is where i will reduce it down to 3.5"
I will then again U turn and come out where the air pump sits.
Right here is where I will angle right back into the TB.
If you want to do this right, you need to pie cut the aluminum to make tight radius bends on large diameter pipe. Know anyone with a Tig welder?
#232
Right on dude....I was thinking the same thing. Still looking for a 180 pipe! That lower radiator area is a tight spot!! I need to make it work! It would work if i remove my AC system but.........I refuse to eliminate AC...absolutely will not happen. I found a pipe thats 14" wide (left to right) but its going to be tough to try and fit it. To be honest i spent much time looking around at the car. Been working way too much.
^^ This is where i bought all my materials... they have a 180* 3.5" pipe that is 12.75" in diameter...
Last edited by K20iVTEC; 03-18-2017 at 08:36 PM.
#233
You know if your just going to put the car on a dyno, all you have to do is mock up the two intakes and let it stick out of the engine bay. No need to spend a lot of money to make it fit only to find out it doesn't make any power. Thats how most do r/d, First does it make power, if it does then can we make it fit.
Now if your testing them on the track, then you have to go through the time and expanse to make them fit.
ROD
Now if your testing them on the track, then you have to go through the time and expanse to make them fit.
ROD
#234
Community Organizer
Ahh, I think im tracking with you now, but not sure. Anyway, If I were to do this, I wouldn't do a long tube because like the poster above, im set up with a functioning cold air/stock short ram snorkel set up, so id want to maintain that same position/utilization there but improve the piping diameter/shape over stock, so trying to discern what that is based on your and kennys data. There is no issue with room in this short ram config, so do I do a 4" to 3.5" to 3" step it down 2 times, or do just a 3.5" to 3" or a 4" to 3"? I gathered a short ram 3.5" to 3" is the best size?
#235
#236
#237
Well it can certainly be both, but that cost money id prefer to spend elsewhere. My car is definitely not a show car, but there are some things on it that are probably worth showing lol.
Last edited by s2000Junky; 03-26-2017 at 12:59 PM.
#238
I ended up going with a new HPS stock intake elbow which has a 3.5 opening that tapers to a 3" to TB. I am running a velocity stack with a 4" opening to exit filter that transitions to a 6" 3.5 mid pipe before entering the HPS elbow, this making it a true inner 3.5 diameter from the filter. I was planning on using my old Comptech SC foam filter but found that I'm actually pulling a vacuum above 7k rpm with it, so this intake is breathing really heavy on the top, so much so the foam filter is a restriction, which is encouraging actually, and my afr has gone leaner up to that point in the low/mid rpms, so it appears I have noticeably improved the breathing through the entire range, especially up top. Now I just need to find a filter that will breath enough wile still fitting in the gutted stock box to support this intake so I can reap the rewards.
Last edited by s2000Junky; 05-15-2017 at 09:45 AM.
#240
^^^ Good mod! Now you need another divider behind the filter to isolate the engine heat akin to a KN/FIPK which is the other half of the problem. I bet around town its not that good once you get heat soaked. You have effectively removed half of the stock intake box which is a factory insulator from the radiator and engine, just restrictive in airflow to filter. This is especially important I think when running a metal intake vs a rubber one. metal is good at retaining temps, whether hot or cold. if you have a direct cold source it will stay cold, if its exposed to heat, it will heat up your cold air rather then insulate form it. one big factor why i decided to get an HPS intake elbow.
Last edited by s2000Junky; 05-17-2017 at 07:55 PM.