3.2 airbox replacement

[kidrock]

tried a search on this, but no luck.

Want to replace the air box on my 3.2 with a K&N (cone style) fresh air intake.

Tried to find a K&N on Pelican Parts search...no luck. Any ideas are greatly appreciated.

ALSO...I've done this before on several cars, and it was pretty straightforward. I'm assuming the same for my 3.2. Am I correct, or is there anything I should pay particular attention to during removal/installation?

Thanks...

[vanwyk4257]

It's relatively simple. MSDS makes a cold air intake, I'm not sure if our host carries them or not. I just bought a 1-off carbon fiber cold air intake and I'm thinking about using it to make a mold to make more.

[burgermeister]

Just realize it's mostly useful for changing intake sound. The concept of a 'cold air intake' doesn't really apply to an air cooled 911 - at speed the engine fan moves so much air through the engine compartment that it never has a chance to warm up.

[kidrock]

Originally Posted by burgermeister

Just realize it's mostly useful for changing intake sound. The concept of a 'cold air intake' doesn't really apply to an air cooled 911 - at speed the engine fan moves so much air through the engine compartment that it never has a chance to warm up.

Never really thought about that...I've seen a lot of pix with the K&N setup and thought it was probably beneficial, and not a hindrance.

I have a SW chip and MK exhaust. Anybody else think it's better just to leave the box alone and install the square K&N filter instead of replacing the box with the "cold air intake"?

[DRACO A5OG]

I found this at Autozone RX3900, fits perfectly if you have a lid shock in the way, like mine. I have a Turbo Tail and Lid Shocks on both sides.

[Bart_dood]

Originally Posted by kidrock

tried a search on this, but no luck.

Want to replace the air box on my 3.2 with a K&N (cone style) fresh air intake.

Tried to find a K&N on Pelican Parts search...no luck. Any ideas are greatly appreciated.

ALSO...I've done this before on several cars, and it was pretty straightforward. I'm assuming the same for my 3.2. Am I correct, or is there anything I should pay particular attention to during removal/installation?

Thanks...

I am not sure if its exactly what you are looking for but my soon to be released MAF unit for the 3.2 comes with a large K&N and does away with the restrictive flapper air box.

See my sig for details:

[88-diamondblue]

No performance benefit with the K&N. There have been posts with dyno numbers showing no hp increase. If you do a search there is a lot of info.

[KFC911]

Originally Posted by 88-diamondblue

No performance benefit with the K&N. There have been posts with dyno numbers showing no hp increase. If you do a search there is a lot of info.

+1. In fact, there have been analysis that show more minute particles are allowed to pass through compared to the stock Porsche filters. Many of us cut away the outside for easier access (or drill several large holes), and it does change the "sound" (which I like), but not much else. I purchased on that was drilled from another Pelican (didn't want to drill my original), and later cut it down to this:

[richde]

^ That's a different way to route your plug wires, I like it.

[ruf-porsche]

Like this?

[KFC911]

Ruf, the plug wires routing over the shroud is indeed stock, but I deviated just a bit after removing the A/C compressor and also changed the routing a bit over on the left side too (heater backdate):

[kidrock]

OK. From all the input I have, I have come to the following conclusions...your input is welcome.

1) it will not hurt the 3.2 if a K&N intake is installed (like the pic above by Ruf), although there is no real increase in hp.

2) cutting the original airbox may be a better solution, mostly for the purpose of easier access.

A couple of you stated that such mods will change the sound, but little else. Would I be correct in saying that such a sound is due to an increase of air intake? And would that cause a "lean" condition?

Also...for the "Purists"...do you believe the removal or modification of the airbox takes away from the overall "originality".

[burgermeister]

The sound does not change because of a change in flow. The intake system has inherent operating sound just like the exhaust system, albeit a bit less of it. The stock airbox acts as a muffler for this intake noise. Cutting holes in it or replacing it with a cone filter simply lets more of the intake system sound get out, thus changing the way the engine sounds.

And it is my opinion (and no more) that a K&N does not filter as well as a stock paper filter, so if you drive in dusty conditions, that may or may not be a consideration. Hold a K&N up to the light, and hold a paper filter up to the light. At least for the K&N that came with my car, I could see lots of tiny dots of light through the filter. Not so for the paper filter.

[bklyn]

Kidrock, I just recieved my MSDS air intake on saturday, I had searched high and low. Its well made,the fit is perfect and the cost for my 87 3.2 was $132. See pic.

[john walker's workshop]

they allow dirt to pass through that a paper element would catch, so why would you want one? just for the coolness factor?

[gtc]

In the commercial world, the only place you'll see K&N filters is in the engine room of marine pleasurecraft.
Not much dust down there, and the owners love the bling factor.

Look at any serious engine and you'll find a paper filter.

[Oregon Cab]

When Steve Wong sent me my chip, he said the stock airbox was the way to go. My tech told me the same thing. I had the MSDS and traded it for a stock box. No loss of performance just different sound. I swiss cheezed my cover for fun.

The premuff and chip were the real performance tweak.

[porschenut]

Originally Posted by bklyn

Kidrock, I just recieved my MSDS air intake on saturday, I had searched high and low. Its well made,the fit is perfect and the cost for my 87 3.2 was $132. See pic.

Is the MSDS a paper filter?

[john walker's workshop]

Material Safety Data Sheet?

[Oregon Cab]

Originally Posted by porschenut

Is the MSDS a paper filter?

Its a K&N filter that is sold under MSDS label as a Motorsports product line owned by K&N. Sounded good in my Carrera and saved lots of room. Consensus was that the OEM design was superior so bbye.