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Join Date: Mar 2012
Location: Woodland Hills CA
Posts: 195
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K&n air intake system for porsche 930
Howdy all
I notice quite a few people seem to be replacing the old air intake boxes with K&n air intake systems. What are the major advantages and which specific system are they installing? |
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05-07-2012, 08:35 PM
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Banned
Join Date: Nov 2007
Location: Rockwall, Texas
Posts: 8,559
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This thread has quite a bit of info, including part numbers, on the K&N (though you wouldn't know it from the title):
http://forums.pelicanparts.com/911-930-turbo-super-charging-forum/620686-bmc-f1-air-filter-failure.html |
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05-07-2012, 08:58 PM
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Only real advantage is access, particularly if you have an adjustable WUR. Really opens up the engine area. it's amazing how much space the stock air filter and housing take up. Sounds cooler too..
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Richard 1982 930, K27-7200, Ruf wheels, Leask WUR, Tial WG, RarlyL8 headers & single out muffler, SC cams, TK I/C 2018 GTi, 2020 AMG E53 wagon ski car 2004 BMW R1100S |
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05-08-2012, 04:22 AM
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Join Date: Oct 2006
Location: Mt Pleasant, SC
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go to your local auto store, buy a small (Holley style) round filter and housing, toss the element that comes with it, then order a K&N from Summit that fits. Very cheap. As stated above, I know of no performance increase at all, as I think RarlyL8 has done dyno testing on this. Much easier engine access and incredible intake sounds when leaning on it.
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Tim 1986 930 Gone:71,2,4 914's, 70T, 71T(RS),77S |
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05-08-2012, 05:07 AM
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More pictures...
 
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Richard 1982 930, K27-7200, Ruf wheels, Leask WUR, Tial WG, RarlyL8 headers & single out muffler, SC cams, TK I/C 2018 GTi, 2020 AMG E53 wagon ski car 2004 BMW R1100S |
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05-08-2012, 05:44 AM
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The major advantage is opening up the engine bay for much easier access around the engine. I think it makes the engine bay look "cleaner", less cramped. No big power advantage. If anything, maybe a few extra horses.
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'87 930..Sold  '72 911T 3.2 MFI Twin Plug race motor, full cage, full coilovers, too many suspension mods to list, wide body, Fiske wheels, R888, fuel cell, fiberglass everything, 2091lbs  "You don't have to be CRAZY to own a sports car, but it helps" Last edited by 1SIK930; 05-09-2012 at 10:21 PM.. |
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05-08-2012, 09:31 PM
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What do you do with the hoses going into the original airfilterbox?
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"It gets a little bit louder above 5,000 RPM so you can't hear the passenger scream" Porsche 911 Turbo |
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05-15-2012, 12:27 AM
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I extended the big breather hose from the oil tank and fed it through the engine tin outside the engine bay into the LHS wheel well. I'll be either doing the same with the overflow from the WUR, or feeding it into the K&N (a la factory setup). The other big hose that fed into the airbox (close to the metering plate) I believe was from the air injection and was plugged a long time ago.
Some people put little filters on all these, and/or a catch can for the oil tank breather. I've never seen any oil come out of this breather line, just a few occasional fumes. Engine bay no longer smells of oil fumes which is nice.
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Richard 1982 930, K27-7200, Ruf wheels, Leask WUR, Tial WG, RarlyL8 headers & single out muffler, SC cams, TK I/C 2018 GTi, 2020 AMG E53 wagon ski car 2004 BMW R1100S |
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05-15-2012, 05:00 AM
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Join Date: Jul 2003
Location: Back in B'ham, AL
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You can "manifold" all the breathers using a 1.5" fuel hose and some fittings; connecting the engine oil filler neck, gas fumes canister, WUR release nipple , and the turbo breather to the top of the "new air filter holder".
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05-15-2012, 05:39 AM
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I had originally just put smaller K&N filters in the end of the hoses, but that led to oil dripping over the top of the motor. So, I put an oil catch can on and mounted it back towards the firewall. The hose off the WUR, I just ran some fuel hose down and out from the engine bay.
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'87 930..Sold '72 911T 3.2 MFI Twin Plug race motor, full cage, full coilovers, too many suspension mods to list, wide body, Fiske wheels, R888, fuel cell, fiberglass everything, 2091lbs "You don't have to be CRAZY to own a sports car, but it helps" |
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05-15-2012, 06:31 AM
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Ok, thank you! :-)
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"It gets a little bit louder above 5,000 RPM so you can't hear the passenger scream" Porsche 911 Turbo |
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05-16-2012, 12:54 AM
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Join Date: Feb 2002
Location: Atlanta, GA
Posts: 933
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Joined the ranks of those installing a K&N RU-5163 air filter. So much space now but I'll have to re-adjust the A/F ratio. Still, sweet setup! Oh, and I already have an oil catch can in place.
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C.H. Boost Addiction - honestly, I have it under control 1989 911 Turbo Cabriolet Mods include: Kokeln IC, GHL Headers, Hooligan muffler, Modified K27 7200, BL WUR, LC-1 & XD-16, Bilstein Sports (4), TRG sway bars, Oversize torsion bars, Strut brace Last edited by BlkBird; 07-25-2012 at 04:32 PM.. |
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07-25-2012, 04:12 PM
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Filter
Quote:
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John- 78 Slick Top 930 "Illegitimi non carborundum" |
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08-01-2012, 06:35 AM
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Banned
Join Date: Nov 2007
Location: Rockwall, Texas
Posts: 8,559
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^ The filter is secured via a large diameter hose clamp comes with it (the K&N filter, that is) . . .
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08-01-2012, 06:54 AM
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It came with a matched hose clamp - fits perfectly. I did have to cut the insulation pad to make space for the top of it though. My WUR overflow is now safely routed out of the engine bay as well though once I have time I'll hook it all up so the fumes and WUR overflow feed into the air filter similar to the factory setup.
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Richard 1982 930, K27-7200, Ruf wheels, Leask WUR, Tial WG, RarlyL8 headers & single out muffler, SC cams, TK I/C 2018 GTi, 2020 AMG E53 wagon ski car 2004 BMW R1100S |
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08-01-2012, 06:54 AM
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I have also fitted the main filter plus 3 additionals for the Turbo and oil tank pipes. Love the space especially as it allows easy access to my WUR.
As yet no oil dripping, but early days. i see no other benefits apart from access. As i have a Targa i can hear a slight increase in Induction noise but not alot. A good mod. Cheers TIM |
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08-01-2012, 07:03 AM
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Another benefit - with everything vented to the outside I no longer have a smelly engine bay and even the garage is free of the fumes that used to linger
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Richard 1982 930, K27-7200, Ruf wheels, Leask WUR, Tial WG, RarlyL8 headers & single out muffler, SC cams, TK I/C 2018 GTi, 2020 AMG E53 wagon ski car 2004 BMW R1100S |
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08-01-2012, 07:06 AM
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Does anyone have pics without the ic so I can see how it is attached before I order?
Thx, John |
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08-01-2012, 07:31 AM
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Join Date: Jul 2003
Location: Back in B'ham, AL
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Quote:
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08-01-2012, 10:47 AM
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Quick Learner
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Afternoon! So just got the K&N filter delivered, as well as a catch can. Wanted to be sure I was plugging the correct hoses, or using the catch can where needed. I love the idea of having it all vent out the wheel well, but not sure which hose should go where...
   Appreciate any insight! Can't wait to crank it up..! |
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04-15-2025, 10:39 AM
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turbo
Bike
AMG E53
1SIK930 Sold
White Lightning
Teeter Totter
1978 Porsche 911 dp-Motorsport 3.3 Turbo
Macan
Widowmaker
