lax-rotor

iTrader: (1)

This is all I have so far. But I don't have the true measurements (i guessed-imated) that I need to make it work. I just don't have time right now, but I'm looking for a little help if you guys are interested. Pretty much i'm modeling this off of the OEM part. I do have a few tricks up my sleeve to keep those worried about heat swamping. But I was curious about what everyone thought so far. This is (very) rough and it's the portion that connects to the throttle body incase it isn't straight forward apparent.

Well what do you think?

rick_tj

I'd consider putting in a bend, maybe 45*, to avoid a full 90* bend where the rest of the air tube would connect to it. Nice drawing though.

lax-rotor

iTrader: (1)

yeah, that's part of the tweak i was going to be working on. i was thinking of doing a 30 deg bend on this portion and a oblong bend on the main pipe after the fitting to pull the rest of the way to the MAF.

since i do plan on having this for the community of FC3S owners out there, what does everyone look for in a CAI or what would just be the best you'd ever want from a CAI (keep things realistic)? like an intake that is almost always the ambient air tempurature or maybe a little cooler no matter what temperature the engine bay is. i dunno just use your imagination and i'll see what my brain can make happen.

stevensimon

iTrader: (11)

should make a tid for the turbo and you will have customers

lax-rotor

iTrader: (1)

TID Turbo intake duct? What does it need to have? could you supply me with some measurements... or perhaps a picture of what you mean? all i have to work off is an N/A (my car).

stevensimon

iTrader: (11)

bah! i cant find a pic and im an hour away from my car right now. im sure there are many people on here that have it avail. its pretty much 2 1/4" outlet straight out about 8" then a 30* bend with a 3" inlet about 2"? thats where the maf sits then its 3" from there to filter or cai the rest of the way out.

Wankel7

Make sure it can clear the fan shroud?

lax-rotor

iTrader: (1)

The TID or the CAI? (btw love the avatar).

As for the TID i'm really going to need a picture to get a rough idea. If you could give me the inner demensional readings of the necessary piping and all that it would probably be the best way to go. also the size and location of any bolts (unless you want to drill those yourself). quick question though since i am N/A doesn't a turbo need massive amounts of air, such that if you put on an Intake duct that was too long it would be like putting a straw on your engine? I'd think you'd make more HP or allow easier breathing with perhaps a compartment and a free flowing filter. but correct me if i'm wrong/mislead.

Dcrasta

As long as the turbo inlet is the smallest diameter and it necks out to 3 inch (to bolt to the MAF) If u make it so it clears the airpump that would be the real trick. Its shaped like a 's curve' forward about 4 inches then up about 5-6 then forward again. Someone get this man a Pic please? I had to make one out of a portion of the factory one. Oh the Factory one has a return for the Bypass valve and a vacuum connection (probably for crankcase breather/pcv)

DrifterDuo

iTrader: (4)

searched google, this is all i could find, i guess kind of like the silver pipe at the top right, but this is for an mr2, they make it for rx7 but they didnt have a picture im guessing the shape is about right but the dimensions are different.

lax-rotor

iTrader: (1)

I see what you mean now. Are there any other connections for the pipes and stuff or is there a different set up and what not? I'm still working on the N/A moduals and i think i'm getting pretty close to the design of the throttle body connection, i've got some pics if you want to check them. I un-fortunatly need to get going to class and a job interview afterwards. depending on how much time i have left after homework and what not i'll try to finish up the second pipe for the CAI and start working on the TID there after.

also for the TID is there a better way or a way that the hoses/return lines could/would be placed better or more appropriatly? also something that i would still need to see would be the area i have to work with under the hood. ie clearing the fan shroud not running into different pipes and units (like lets say a compression pump). with a turbo does it matter if there's a 90* turn in it anywhere? or would it be more efficient like the CAI to keep major turns to a minamum?

DrifterDuo

iTrader: (4)

i was searching on TIDs and came across a few custom ones people had to fab out of honda intakes so they would clear their fmic piping, eighth post down cause the rest of the pictures are dead https://www.rx7club.com/showthread.p...rbo+inlet+duct

lax-rotor

iTrader: (1)

With some of those set ups i noticed they sacrificed the intake duct without compramizing the intercooler pipe from the turbo. perhaps a joined pip would provide the best compromise. IE: have the intercooler pipe either drop down or go on top of the TID. If I were going to use the OEM as a base i'd probably elevate the stress on some of those curves and put a compramise between those two crossing pipes... maybe even have them welded together to provide more room or greater efficiency.

it also looked to me like there were many that did their own welding jobs on it. if any of you guys (or gals) are reading, what kind of problems did you run into? how'd you get around them?

Jager

iTrader: (10)

I'de just use my $25 Prelude piping still.

lax-rotor

iTrader: (1)

Here's a rough bit that's much more accurate for the B13 engine (I ended up taking it off and sitting down and measuring it) Enjoy the eye candy. I'm working my way down to the TID (don't think i didn't forget).

For those interested in the TID could you measure please and tell me outside and inside diameters (all that's really needed is the outside. I'll probably make the inside roughly around outside-.1").

I'm still figuring out the inner parts of inventor and how to make pips bend certain ways and stuff. so if anyone has any knowledge of inventor your help would be greatly appreciated.

suijen2

I'm seeing those mounting points as a weak point. How about designing something more like a circle inside a triangle inside an oval, where the bolt holes are at each end of the oval. In other words, make the outer edge more egg shaped to fit a gasket easier. Just a suggestion.

As for the piping, I'd rather see a long slow 30 degree bend than a sharp 90 degree turn for air flow.

lax-rotor

iTrader: (1)

That may be a problem, but for the amount of stress on the intake I don't think it would be extrodinarily weak. But I'll run some stress analysis when I get the pipe right on the intake. As for the pipe it's going to be as follows with sweeping angles:
R-Right (looking at throttle body intake), D-Down, U-Up.
deg.
30*R
30*R
15*R
15*D
15*R
15*U

I'm still working on the run lengths, I still have some measurements to do to get to the MAS. Those are the expected angles, I may break the 30*'s into smaller more spaced out angles to reduce the sudden curvature. What's annoying is: unless you cut away some of the inner-fender you will have to have a cumalitive anglular measurement of 90*.

lax-rotor

iTrader: (1)

Okay, so I had some students/workers at a machine shop give me a rough price for making that piece from aluminum. The only thing they told me is that it would be alot $$$ to machine it, cheaper would be to cast it. Some others have thought that it would be best to make a mold and make it out of plastic. I have a few questions regarding this before i do it. First what plastic should i use as to avoid having the product melt onto the throttle body. also would it be difficult to make it out of CF or FG? For those who have done work with CF what would I need to do or where can I go to read and learn how to do it?

junito1

best way is to get a greddy original and copy that crap and power sell it for half the price.=)

Madrx7racer

the only question that has been on my mind forever is the following:


Mazda specifically made the TID with those ridges to reduce turbulence suposedly.........will changing the stock TID actually HELP and not hurt performance???

Mazda could have easily put a pipe like the ones we're talking about for less than making the stock TID...........



all this goes out the window if this mazda was thinking about sound deadening.......

lax-rotor

iTrader: (1)

Before I even consider attempting a TID I want to make sure I can accomplish something simple like this. Then once I get the CAI done and see how long it took and the price and performance or anything I'd consider doing a TID.

As for the ridges I'd place my money on the sound deadening considering the car doesn't have an airsilencer canister or vacum valve to activate it.

I'm still doing some looking online for ABS plastic and what not... but it's not going very well. It's looking like i'll either have to make it out of FG, CF, or Kevlar. Something i'm not exactly sure I'm able to accomplish as of right now. Anyone able to point me in the right direction?

Madrx7racer

why not simple aluminum tubing? FG melts, CF is expensive, kevlar.......

lax-rotor

iTrader: (1)

Don't exactly have the tools to form the aluminum. For the amount of CF I need it would actually be pretty cheap from what i've seen for prices. I can get a square yard of hybrid CF/Kevlar for about $60, or I could get 3inx10yard roll of kevlar tape for about $20 (or a 3in x 50 yard roll for like 90 or somethin). I'm just thinking of how I would make a prototype and get everything together to do it... thinking i might do it in two parts and then mate them together.

Madrx7racer

make a mold out of carboard tubing............cheap and easily manipulated.

Madrx7racer

i am not sure if it's worth the trouble of doing it in CF or kevlar when aluminum ones can be made for less and sold on ebay really cheap.............i just don't see it as a cost effective product for you......you would need to cut into your profit in order to remain competitive with the aluminum ones for sale on ebay.......

if you already have everything required for making CF or kevlar parts then I would move towards other potential products.........unless you want to sell them for cool factor....which does have a market among the ricey ppl......but a market is a market......as long as you can sell something.