M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: elementskater_xx on May 04, 2008, 08:52:19 PM
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I have searched high and low for a cold air intake for my 1992 318is i can not find it. I can't find any intake for that matter. Anyone got some reference or know where i can get one?
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http://www.realoem.com/bmw/showparts.do?model=AF93&mospid=47305&btnr=13_0344&hg=13&fg=20
;) ;)
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I have searched high and low for a cold air intake for my 1992 318is i can not find it. I can't find any intake for that matter. Anyone got some reference or know where i can get one?
You can make one.
http://www.realoem.com/bmw/showparts.do?model=AF93&mospid=47305&btnr=13_0344&hg=13&fg=20
;) ;)
Take your outside air temperature sensor from the left side brake duct and stick it inside the airbox to monitor the intake air temperature for a week or so. The average intake temp varies from 10f above ambient at highway speeds to 40f above ambient in stop and go traffic. There is nothing wrong with the stock airbox but you can improve on the stock intake tube (part 12 the diagram). Part 12 is also the biggest source of restriction in the stock intake system. It starts with a 1.75" hole at the back of the headlights and ends 3" at the airbox even though the total area of the throttle plates is much bigger.
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I got a MAF adaptor for $11 on ebay and I'll use a K&N filter I have sitting around just because I have it already. I'll make an air box for it and remove the headlight cover. If I didn't have it i'd get a K&N drop in filter and mod the front of the airbox.
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I got a MAF adaptor for $11 on ebay and I'll use a K&N filter I have sitting around just because I have it already. I'll make an air box for it and remove the headlight cover. If I didn't have it i'd get a K&N drop in filter and mod the front of the airbox.
Are you sure about that K&N?
http://www.bolhuijo.com/airflowtest/
I like your idea of using the high beam but my approach is a little different. I'll post some pics when I have it finished.
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hey, pretty cool!
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hmm..pretty interesting..
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I've got a cheap fram in the box right now, and the K&N is free. So I'll probably use it for a bit. Once I get suspension done and can have more fun with it maybe I'll look into a large intake tube into the stock box.
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I had some time on my hands tonight so I slapped this together because it beats driving around with 3 headlights everywhere.
Take one sealed beam frame.
(http://farm4.static.flickr.com/3255/2469911432_d462330d15.jpg)
And one 6" strainer ($3 at ross.. LOL)
(http://farm3.static.flickr.com/2306/2469911394_2b4f3fa2a3.jpg)
And epoxy the 2 together.
(http://farm3.static.flickr.com/2129/2469911484_01dd8366cb.jpg)
Spray paint the inside of the headlight bucket silver and reinstall minus the headlight. People with elipsoids, you're on your own.
(http://farm3.static.flickr.com/2322/2469911536_74e4d3300e.jpg)
The paint work doesn't quite match the brightness of the low beam reflector with camera flash, but under normal day light they are damn close. I still have a dual filament bulb on the outside so 3 bulb 300w highbeam I can live with.
(http://farm4.static.flickr.com/3134/2469089803_e2b21f7185.jpg)
Then get about 14" worth of 3.25" ID tubing (McMaster) and an over sized hose clamp from my old volvo.
(http://farm3.static.flickr.com/2144/2469089863_08ed19ab8d.jpg)
The 3.5" OD of the hose fits perfectly into the back of the headlight bucket.
(http://farm3.static.flickr.com/2018/2469911674_75e5efed22.jpg)
And done. Now before anyone starts going off about how you would have to be going 160mph to get any effect from a ram air intake and all the other R3V spawned BS, may I suggest some reading.
http://autospeed.com/cms/A_2518/article.html
http://www.autospeed.com/cms/A_0663/article.html
http://www.mz3.net/articles/149.html
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hey tjts1, that's pretty cool.
if you sprayed that silver it would probably look like you still had the light in there - and not attract attention from the cops
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hey tjts1, that's pretty cool.
if you sprayed that silver it would probably look like you still had the light in there - and not attract attention from the cops
Pulling out your high beam headlights (on a vehicle w/ 4 front headlights) or modifying the front of the vehicle within reason is not a crime. As long as he still has the outer "low beam" headlights (or any type of front headlight for that matter) for driving at dusk or night and retains the appropriate parking/blinker lights, it's a non-issue.
Very good air intake idea though!
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Looks like I'll have to stick with the stock airbox. The ABS module is in the way. Funny thing is that the ABS doesn't work so it's a huge waste.
Guess I should check the relay. Probably something more expensive though.
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Yeah, I think I will paint it silver at some point. Right now I just enjoy driving it. You wouldn't believe the throttle response especially over 30mph. Still rocking the 87 octane :p
Looks like I'll have to stick with the stock airbox. The ABS module is in the way. Funny thing is that the ABS doesn't work so it's a huge waste.
The ABS got in the way of this setup as well. It was a bit of a squeeze but it worked... just.
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Yeah, I think I will paint it silver at some point. Right now I just enjoy driving it. You wouldn't believe the throttle response especially over 30mph. Still rocking the 87 octane :p
The ABS got in the way of this setup as well. It was a bit of a squeeze but it worked... just.
87? No pinging?
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87? No pinging?
here's a new "87 octane" thread:
http://www.m42club.com/forums/showthread.php?t=5569
:)
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87? No pinging?
No pinging.
Finally painted it. (http://farm3.static.flickr.com/2252/2486356213_a1b09a87f9_o.jpg)
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Do anyone have experience of this:
http://www.bmcairfilters.com/infoCDA.asp
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Pics from farther away please.
You didn't want to paint it black? It seems like blending it in may make it look more subtle.
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If you scroll up to #9, it was originally black which made the car look like it had 3 headlights. I think silver is a lot better.
The factory hot air intake is 2.1" across with a total surface area of 3.46"^2 even though the throttle plates are much larger.
(http://farm3.static.flickr.com/2213/2490136670_a7990c3b08.jpg)
The tubing I'm using (right) is 3.25" across or 8.3"^2 surface area.
(http://farm3.static.flickr.com/2215/2484047759_f087e01ffc.jpg)
The screen is 5.75" across (size of a headlight) and spherical in shape for a total surface area of 52"^2. Funny how these things work out when you do the maths.
(http://farm3.static.flickr.com/2244/2487172530_92dca4f464.jpg)
I think BMW had an interest in restricting the output of this engine in order to sell more 325s. Same story with the 4.1 diff. Its only purpose in life is to keep the 0-60 time near 10 seconds. This car was engineered as a gap filler in the market between the M40 and M20.
I think its finally time to install my 22# injectors.
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Finally painted it. (http://farm3.static.flickr.com/2252/2486356213_a1b09a87f9_o.jpg)
I think the black looked better.:(
Definitely props to you for going this way for the intake air. This is a very popular method used on BMW race cars.
Do anyone have experience of this:
http://www.bmcairfilters.com/infoCDA.asp
They are very expensive, but they have been shown to give noticeable performance gains. Prices are often upwards of $300.
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I think the black looked better.:(
Definitely props to you for going this way for the intake air. This is a very popular method used on BMW race cars.
They are very expensive, but they have been shown to give noticeable performance gains. Prices are often upwards of $300.
I ordered that Bmc carbon airbox. Hope that make some performance gain with Digi-tec chip:cool: