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Thread: Hotty Top Mount Intake Non Turbo Build

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    SLi Resident Matty2Hotty's Avatar
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    Hotty Top Mount Intake Non Turbo Build

    Looking to possible get a list of people seriously interested in buying a replica gravlesports intake for roughly $200. Have a shop local here that is going to make a prototype on my car, it will use all your vac lines(might have to ext. the hoses a little, easy fix) and will use your oem or drop in filter. I know the intake is soo rare and last I herd only 34 in the U.S. so I want to see if anyone else is interested in one so I can let the fab shop know. Either way I will have 1 for my car and will probably make it easier, cheaper, and faster if they know they have to keep my car in the shop longer to build more then 1.
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    Re: Gravlesports TM Intake, Who will Buy?

    what are these gravelsport tm intakes?

    why are they so rare?

    what makes them special?

    pics?
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    Re: Gravlesports TM Intake, Who will Buy?

    It's a top mount intake, they were made exactly for the impreza guys but direct fitment for legacys too. Alot of people don't know anything about them or never herd of the intake cause it was soo rare and limited number made only back in 2004. The mounting will be different on the box and direct bolt on.
    This is what they are going off of...

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    Re: Gravlesports TM Intake, Who will Buy?

    so this only works with a hood scoop then?
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    Re: Gravlesports TM Intake, Who will Buy?

    Nope, it will fit under regular hood, scoop is not required but will throw in more fresher air. Can't find the thread but a guy did a dyno with 8hp gain and alot better throttle repsonse. Sounds quiet regular driving but at WOT she growls!
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    Re: Gravlesports TM Intake, Who will Buy?

    Looks cool, I don't know if i'd buy one though, I'd like to see it installed first on a legacy

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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    sucks for BD owners since the whole MAF thing was a huge issue.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    I take it that these wouldnt work with the MAF intake systems? I dont see a way of connecting the MAF sensor to the intake, but if there is a way you got me interested.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    Yeah I know, been trying to figure a way out to get a MAF in there, I mean there would be enough pipe on the back section to cut and fit it in maybe. I'm MAP so I can't say... Maybe have the guys "loop" the piping longer and bigger from the side of the box. Here is a coated black one shop made by another guy.

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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    cant drive your car in the rain? or am i missing something?

    if im not missing anything thats a pretty awful idea.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    Guys have driven in pouring down rain and no problems. Everything thinks you hyrdolock a motor from getting the filter wet. Wrong! You seriously have to suck in a cup full of water all at once to damage or do any harm to your engine plus the design of the intake angled with port hole on the bottom for any drainage. Its all covered on the RS forums about it. Im making a plexiglass cover for mine though to be safe. Talked the company today and they are going to be made of stainless and he is going to be around $150 for the intake.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    i had something similar to this on my toyota, i never had any rain problems but i always wanted to get some extra door insulation molding to go between the hood and the edge of the filter, i had a theory that it would help channel air into the filter. but later i just turbocharged it..
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    interesting idea.. I might be interested in it if it worked with a maf system. Technically all they need to do is cut the pipe in the middle, included a welded on maf adapter and then the person would need their own tubing to connect the other side.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    Wow this is pretty interesting. I know I have heard a couple folks on here work on this idea before. I might be in for one as well, seeing as that I have one of those funky MAP EJ22 BK's. Water and snow would be my only worry about the intake. Other than that it would be a great addition.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    This would only really be worthwhile if you had it sealed against the hood and had a functional hood scoop. Otherwise it would be drawing in hot air from right above the engine (i.e. REALLY hot air)
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    SLi Resident Matty2Hotty's Avatar
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    I know that this intake isn't for us MAF owner.
    lets say it was made to work for us (MAF).
    would it cause any issues from the MAF having a shorter pipe before the throttle body?
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    I'm still confused on what this does. So it is supposed to get cooler air above the engine (from a hood scoop most likely) than from the stock intake? Does the shorter path to the throttle body help?

    I think I understand the point of the stock "torque box" coming off the throttle body - instant and on demand air for WOT, etc, is that the same idea here? From what I've experienced (by temporarily replacing my 2.5's torque box with standard 2.2's intake) without the box the car had slower throttle response. I didn't do dyno runs, of course, but that's how it felt to me. Also is 9hp big enough to conclusively prove that it's working and isn't related to temperature changes, and other factors, etc between dyno runs? Same thing with the "throttle response," can we be sure that it wasn't the tester's butt dyno?

    I'm not discounting that this could work, but I'd like to see some proof.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    There was a giant discussion about this before, maybe somewhere else. I think it was Shane that pointed it out.

    For this to work adequately with the MAF systems, the tub would have to be extended alot, and then rerouted with the MAF in place where the tube was fairly straight without any major causes of crazy turbulence. Turbulence while good for getting power, is bad at the point where readings are being taken.

    People also talked about avoiding water damage by using that foamy insert spacer thing at some point in the tube.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    I think it would be a good idea to have the box sloped away from the intake pipe, with a breather filter stuck on a bung at the lowest point so if it does get waterlogged, you can just drain it.

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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    I would totally buy one if there was a MAF version worked out. Hopefully it can be done.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    MAF is in design so it might be months... The map will be done Tuesday for testing, stainless box and lid with black piping. Red or blue i can get but shooting for $160 plus shipping.

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    Re: Gravlesports Top Mount Intake Rep. Non Turbo



    for MAF

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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    Yeah responed to your other thread i think over on legacy GT.com i like they way it looks and think it would go well wiht the vis V-line hood just currious what kind of sensor would i have on a 2000 BH wagon MAF? or MAP?
    I had just picked up my Leggy and was thinking about doing a CAI or the short air thing. Sense i havnt invested any money in either of those yet i would be willing to give this a shot +1.. This was the hood i was mentioning[attachment=0:389oghe7]carbon fiber hood.jpg[/attachment:389oghe7]

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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    Yeah I honestly haven't seen anyone running this hood! You will have to look at your intake system to see if your MAF or MAP, there is I guess a sensor somewhere? Not sure since am MAP.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    if your not running a MAF system why wouldnt it come from the back of the box, thru a C shaped pipe and into the throttle body?

    kind of like a ram air effect thing, i mean, if your fabbing up your own CIA/short ram, why not go balls deep? and make it as direct, and short a path as possible?

    does that make any sense? i mean, im sure it would take more work, but more effective maybe?
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    a 2000, with the SOHC 2.5 should be a MAP based system.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    if your going to do that you should get some kind of an insulator to go between the hood and the box, to create a high pressure area for the filter to grab air from with out it i have a feeling the air will rush right past it. and when your at a dead stop the filter is just going to grab hot air from the engine. like i said. i have experimented with this idea before.
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    Quote Originally Posted by lord flashheart
    if your going to do that you should get some kind of an insulator to go between the hood and the box, to create a high pressure area for the filter to grab air from with out it i have a feeling the air will rush right past it. and when your at a dead stop the filter is just going to grab hot air from the engine. like i said. i have experimented with this idea before.
    This is the idea behind the intercooler shroud/splitter on turbo subarus. There is a rubber seal that makes the intercooler only get air from the outside through the scoop.

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    t3h ub3r m3mber lord flashheart's Avatar
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    Re: Gravlesports Top Mount Intake Rep. Non Turbo

    No, no ,no I'm not insulting you, I'm describing you!

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