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DIY CAI
Apr 23, 2005 19:23:53 GMT -5
Post by blck87gtconv on Apr 23, 2005 19:23:53 GMT -5
Although they seem similar, the cold air short-ram box setup will flow much easier. The air source isn't as limited, like it is on the factory air box.. it can only come from under the filter. The conical filter can pull it from 360* around it... the only purpose of the air box around it is to insulate it from the heat of the engine. And it does its job.
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DIY CAI
Apr 23, 2005 19:44:44 GMT -5
Post by Joel87GT on Apr 23, 2005 19:44:44 GMT -5
You mention the short ram is a hassle to perfecting. Just thinking from blue85GThatchback ~ joking ~ if you could some way fashion your stock airbox to flip upside down "the cover" to the MAF and mate it to your hood vent/ram type. You would have to rig it with supports probably from racerb products inc to mate with the hood.
Pros: Works best in San Diego, Arizona, Texas, Florida where these states hardly get any rain.
Cons: You will suck in Rain not only that you will suck bugs that which will impede your square type filter.
Black mentions those bends will from a CAI will reduce some HP but, at least you know your N/A will bet getting cool air 365 days a year rain or shine and snow. (Well, cant say for floods or if you decide to drive through a flash flood) I say I take cool air anyday than from the headers. The term Short RAM is a misnomer it should be called inlet duct. If you were to use the RAM to increase boost you need to get Mach 3 speeds.
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DIY CAI
Apr 23, 2005 20:45:49 GMT -5
Post by blck87gtconv on Apr 23, 2005 20:45:49 GMT -5
You mention the short ram is a hassle to perfecting. Just thinking from blue85GThatchback ~ joking ~ if you could some way fashion your stock airbox to flip upside down "the cover" to the MAF and mate it to your hood vent/ram type. You would have to rig it with supports probably from racerb products inc to mate with the hood. Pros: Works best in San Diego, Arizona, Texas, Florida where these states hardly get any rain. Cons: You will suck in Rain not only that you will suck bugs that which will impede your square type filter. Black mentions those bends will from a CAI will reduce some HP but, at least you know your N/A will bet getting cool air 365 days a year rain or shine and snow. (Well, cant say for floods or if you decide to drive through a flash flood) I say I take cool air anyday than from the headers. The term Short RAM is a misnomer it should be called inlet duct. If you were to use the RAM to increase boost you need to get Mach 3 speeds. You've obviously not understood the concept that I explained.
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Jim
GT Crew
'88 GT hatchback - commuter on weekdays, autox on weekends
Posts: 123
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DIY CAI
Apr 23, 2005 22:19:09 GMT -5
Post by Jim on Apr 23, 2005 22:19:09 GMT -5
Sounds like what you are saying is to replace the stock air box with a cone type air filter, build a box around it to insulate the filter from the engine heat, put a bigger duct (like a dryer duct) in the inner front fender to duct in cooler fresh air from outside the car which would require a larger hole in the inner fender for the bigger duct.
This should be really easy to make as I can weld up a box that would also support the MAF and seal against the hood to really insolate the air filter. Just need to know what filter to order.
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DIY CAI
Apr 23, 2005 23:34:26 GMT -5
Post by Joel87GT on Apr 23, 2005 23:34:26 GMT -5
Sounds like what you are saying is to replace the stock air box with a cone type air filter, build a box around it to insulate the filter from the engine heat, put a bigger duct (like a dryer duct) in the inner front fender to duct in cooler fresh air from outside the car which would require a larger hole in the inner fender for the bigger duct. This should be really easy to make as I can weld up a box that would also support the MAF and seal against the hood to really insolate the air filter. Just need to know what filter to order. You forgetting something.. once you build that box where in place of your stock airbox. You want to make sure its not pernament. The purpose of having a removeable stock air box so that you can get to the things underneath of it for services. Engine mounts, clutch repair, master/slave clutches, breaklines, fuel filter...... This picture is what you are trying to do. See his filter flanged and how it is mated to his hood. Also notice he relocated his battery. Now thats one way of doing it as I was describing of a short inlet duct. not ram. I believe this is what you are trying to do.
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Jim
GT Crew
'88 GT hatchback - commuter on weekdays, autox on weekends
Posts: 123
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DIY CAI
Apr 24, 2005 0:13:16 GMT -5
Post by Jim on Apr 24, 2005 0:13:16 GMT -5
Well, when I said I could weld it myself, I meant I would weld a box, then install it into the car, making it removable. I should have said that. The picture is pretty much what I want to do. How is hte air ducted into the box?
I was also thinking of moving my battery to the back, but I have a hatchback and drag strip rules usually don't want a battery in the interior, since there would not be a "firewall" between the battery and the interior.
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DIY CAI
Apr 24, 2005 1:23:08 GMT -5
Post by blck87gtconv on Apr 24, 2005 1:23:08 GMT -5
That's exactly right. All that's needed is a hole on the underside of it fitted to some ducting that leads to the front of the car to receive the high pressure air while driving.
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DIY CAI
May 11, 2005 5:07:57 GMT -5
Post by acis162 on May 11, 2005 5:07:57 GMT -5
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DIY CAI
May 11, 2005 23:49:52 GMT -5
Post by Joel87GT on May 11, 2005 23:49:52 GMT -5
Thats a very good setup. I like it. I am doing the same thing but my filter is in the wheel well. (I wish I had a digital camera.) Can you elaborate on your engine? Where is your spark plugs. How do you change your oil too?
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DIY CAI
May 12, 2005 5:38:04 GMT -5
Post by acis162 on May 12, 2005 5:38:04 GMT -5
Thats a very good setup. I like it. I am doing the same thing but my filter is in the wheel well. (I wish I had a digital camera.) Can you elaborate on your engine? Where is your spark plugs. How do you change your oil too? here's the picture of my engine bay, or you may visit this link for more images... www.cardomain.com/memberpage/770872/1
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DIY CAI
May 12, 2005 6:51:45 GMT -5
Post by blck87gtconv on May 12, 2005 6:51:45 GMT -5
Hmm.. It's not good to seal everything off like that.. then it's no better than having a CAI. The ducting is to direct air to the box.. but not to be the only source.
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red89st
New Member
89 st coupe
Posts: 22
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DIY CAI
May 12, 2005 19:17:54 GMT -5
Post by red89st on May 12, 2005 19:17:54 GMT -5
what about moving the battery and have a short ram routed to where the battery would be. build a box that goes around the filter that seals against the hood. cut a hole in the hood and put a hood scoop right over the box and fabricate something to close off the hood(a little door that slides into place) so when it rains you dont suck in water and have the bottom of the box open so the engine still gets air.
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DIY CAI
May 16, 2005 4:25:34 GMT -5
Post by acis162 on May 16, 2005 4:25:34 GMT -5
Hmm.. It's not good to seal everything off like that.. then it's no better than having a CAI. The ducting is to direct air to the box.. but not to be the only source. I agree CAI is better but I think this one is better than having no shield at all...
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DIY CAI
May 23, 2005 23:21:02 GMT -5
Post by trd3sg on May 23, 2005 23:21:02 GMT -5
Okay.. I think you're mixing up posts with members. I never said anything about using the hoodscoop. I said build a cold air box around a short ram and duct cold air to THAT, if you wish.. but don't force the air to take the bends that way by actually making a CAI go that route. It's been proven that a short ram and cold air box is the best setup. You don't have to believe me, but it's the honest truth. It's more work than the other method, granted. But if you want the absolute most from your setup, that's the way to do it. When I say to "duct cold air" to the box, I mean run some dryer hose or something to the hole in the engine bay from the front of the car.. not quite a ram-air, since it's not all sealed off.. and since the pressure cannot ever be positive, but with the setup I mentioned.. it's not pulling air exclusively from this spot.. and this outside air will just be added insurance. i think this idea is spot on - that way you keep throttle response tight without resorting to long intake pipes with the source being 2 metres away im going to do this: use standard air filter box but reomve standard filter - seal off box tighlty with permaseal non silicone based sealer, every crevice to keep it air tight, enlargen both the outlet and inlet mouths to\from the box, and run a massive 4 inch inner diameter drain piper through the guard (or fender in US terms lol) to a nice spot where it will not pick up too much water that way it retains factory response (if not slightly better due to straighter inlet pipe to filter) and has the advantage of being hidden \ neat and no clues to those unsuspecting , and still get the benefit of a nice feed of positive pressure air from an outside source that will provide COOL or cooler than the usual, air source. Another thing i will be doing for this mod is moving battery to boot (makes it easier for my massive sound system to draw some good power too ) to accomodate for larger piping and slight movements in the mounting of the standard air filter box - EDIT - sorry ppl didnt see second page of this post - so i have repeated some stuff others have said - yes i agree with the insulated box setup suggested - cheers
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