ST165 Intake

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ST165 Intake

Postby RallyMax165 » Fri Mar 01, 2013 8:10 pm

The rubber that used to slip onto my compressor inlet has fallen apart completely. I need a new intake hose. I am thinking about buying this K&N Apollo Intake and just keeping what's needed from the stock intake assembly. I am wondering if anyone has learned some good things by doing this before... It looks like everyone that has built an intake has kept the heavy clunky metal box that comes off the stock box. What exactly does that piece do? I can tell it has a complex electrical connection and a baffle plate of some kind in there. I would like to know if I must keep this part when I build a new intake, or what I must do to bypass it... Also the crankcase breathes right into the intake? Is it time to build a catch can as well right now? I am willing to try some stuff and figure some things out, but if anyone has any advice or data on this matter, please tell me.

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Re: ST165 Intake

Postby Dracov » Fri Mar 01, 2013 8:17 pm

If by "heavy clunky metal box" you mean this:

Image

Then that's slightly required as that is the Air Flow Meter that tells the ECU how much air is coming in so it can know how much fuel to inject. There are a few ways of replacing it with more modern air metering methods, which are well documented throughout the site here. The large black plastic box it is normally bolted on to is the factory air filter box.
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Re: ST165 Intake

Postby 88gt4DE » Fri Mar 01, 2013 8:28 pm

Intake must be custom made to be correct and HAS to incorporate the air flow meter ( big hunk of metal ) Actually in the middle of doing mine now. Its easier if you have your battery relocated already but if not there are some other ways of doing it ... Havent updated it yet but my brother has a picture on his project thread ... page 4 ... viewtopic.php?f=44&t=23390&start=45
Last edited by 88gt4DE on Sat Mar 02, 2013 2:03 am, edited 1 time in total.
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Re: ST165 Intake

Postby underscore » Sat Mar 02, 2013 12:52 am

Just buy a new 45* coupler, and cut it to fit. For the filter, get the Vibrant MAF adapter, get whatever cone filter you like, and voila.
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Re: ST165 Intake

Postby RallyMax165 » Sat Mar 02, 2013 2:00 am

underscore wrote:Just buy a new 45* coupler, and cut it to fit. For the filter, get the Vibrant MAF adapter, get whatever cone filter you like, and voila.


Know where I can order a Vibrant MAF adapter?
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Thanks

Postby RallyMax165 » Sat Mar 02, 2013 2:01 am

Thanks for all the help guys! Picture help a lot. I'll get some up soon.
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Re: ST165 Intake

Postby underscore » Sat Mar 02, 2013 2:24 am

RallyMax165 wrote:
underscore wrote:Just buy a new 45* coupler, and cut it to fit. For the filter, get the Vibrant MAF adapter, get whatever cone filter you like, and voila.


Know where I can order a Vibrant MAF adapter?


Anywhere that sells Vibrant parts should be able to order it. Note that for the RC you'll have to drill your own holes.
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Re: ST165 Intake

Postby RallyMax165 » Sat Mar 02, 2013 7:55 am

underscore wrote:Just buy a new 45* coupler, and cut it to fit. For the filter, get the Vibrant MAF adapter, get whatever cone filter you like, and voila.


I can't tell if this one will work or not. Does this look correct to you?

http://vibrantperformance.com/catalog/i ... =1022_1077
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Re: ST165 Intake

Postby underscore » Sat Mar 02, 2013 8:06 am

Yeah I'm pretty sure that's the one, I've got an RC so I had to drill different holes though.
★ 1991 GTFour RC ~ "Rebel Scum" ★
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Re: ST165 Intake

Postby RallyMax165 » Sun Mar 03, 2013 8:41 am

underscore wrote:Yeah I'm pretty sure that's the one, I've got an RC so I had to drill different holes though.


I have a drill. Thanks for the advice man, this has cleared things up quite a bit for me. I will post some pictures or the end result.

Before

558
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Re: ST165 Intake

Postby RallyMax165 » Sat Mar 09, 2013 3:04 am

ST165 AFM inlet to 3" round Adapter
Sketching the dimensions
604
Modeling the part
605
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Re: ST165 Intake

Postby RallyMax165 » Sat Mar 09, 2013 5:04 am

Here is the 3D model of the adapter needed to mate the stock AFM to a 3" diameter intake. The port size is very near the same perimeter on both ends. I plan on making the tube out of some .120 wall tube, putting a slug in the round end to keep it's shape, then heating the other end up and coaxing it into shape with a vice and some C-clamps, then I will weld the tube and plate together, and viola! The plate will be had cut and filed smooth, I would consider looking into a short run of these through a CNC shop if there was enough interest... I post pics of the first prototype hopefully soon.
607608
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Re: ST165 Intake

Postby RallyMax165 » Mon Oct 14, 2013 4:50 am

Latest developments on the intake project:

761

I drilled holes in a Spectre AFM adapter plate that I found at Oreilly's to get the new K&N Apollo air cleaner on. I need some silicone 2.75-3" adapters and it should seal up pretty well. The unfortunate thing about this set up is that the power wire from the starter sometimes will arc to the AFM housing and it runs weird, that can't be good for the poor AFM... Once I get pre-compressor stuff sorted out, I have been looking into getting a recirculation valve and plumbing it in to blow pressure before intercooler to after AFM. If anyone has actually done this before, I'd be interested to hear how it went.
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Re: ST165 Intake

Postby underscore » Mon Oct 14, 2013 6:13 am

I'd suggest protecting the AFM with something, shorting out that wire will be bad for the wire and the battery as well.
★ 1991 GTFour RC ~ "Rebel Scum" ★
It's for sale! http://www.alltrac.net/phpBB2/viewtopic.php?f=64&t=52181
Build thread http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=44216
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Re: ST165 Intake

Postby 88gt4DE » Mon Oct 14, 2013 10:39 pm

Fitment looks good , why did ya mount the AFM upside down ?
Rob
1988 ST165 - 77K - Project ---> http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=31483&start=240
2000 Toyota Tundra SR5 - 162K - DD - Thanks 97JZA80
2007 Toyota Rav4 - 110K - My girls DD
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