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Join Date: Sep 2004
Location: Bremerton, WA
Posts: 67
Kokeln intercooler and dangling hose

My '79 930 currently has various minor engine problems, but I wondered if anyone here knows anything about replacing the stock intercooler with a Kokeln intercooler.

The previous owner installed a Kokeln KI100 intercooler and one of the connections seems funky. The hose that originally came from the turbo oil pan to the intercooler was disconnected from the intercooler, and the Kokeln intercooler doesn't have a connection for this hose. So the previous owner just let it sit open in the engine compartment. This seems strange since it would seem to allow dirty air to enter the oil through the turbo oil pan.

Is there some reason that Kokeln left off this connection in their KI100 intercooler? Should I plug the hose with something to prevent outside air entering the turbo oil pan?

Also, as a side note, should the engine idle change when removing the oil cap on a 930? I've heard that this is true of standard 911s, but don't know about 930s. If it is true, I'm wondering if this open hose is relieving the pressure because my engine idle does not change when I remove the oil cap. Any thoughts?

Also, if anyone happens to have an instruction guide for replacing the stock intercooler with a Kokeln KI100 intercooler, I'd sure like to see it.

Doug
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'79 911 Turbo

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Old 02-07-2007, 06:41 PM
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Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
Posts: 12,689
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The hose from the turbo oil sump connects to the air filter housing, not the intercooler. Connecting it to the intercooler would put it under pressure when the engine is on boost.

Removing the oil cap does not affect the idle on a 930 like it does on an SC.

Kokeln's web site should have some info for you I would think.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 02-07-2007, 06:56 PM
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Does anyone know why the idle does not increase on a 930 or why it does on a 3.2 ?
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 02-08-2007, 01:01 PM
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Join Date: Nov 2005
Location: columbia md
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Check this URl for a real good write up on Kokeln IC install.

http://members.rennlist.org/magisterc/kokeln.html
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Old 02-19-2007, 04:05 PM
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