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Join Date: Feb 2006
Posts: 521
BB headers and main oil line

Hi everyone,
I bought a set of second hand BB headers on this board. I have already sourced the specific turbo oil tank and the short hose between the turbo tank and the OE scavenge line because I have read that these were needed with the BBs.

But I am wondering whether I can still use the OE oil line which goes from the bottom of the crank case to the main oil tank with the BB headers arrangement. Can someone shed some light on this? Thanks

Mathieu

Old 09-10-2010, 12:58 PM
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Join Date: Jul 2006
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If you mean the oil line from the case scavange pump to the external thermostat you have to replace that because it won't fit when putting on an aftermarket short tube header system.

Best way is to backdate that line to the OEM 2 piece early 911 version that was gold cad plated steel tubing and a section of rubber hose on the second line to deal with engine vibration that went along under the clutch bell housing and then to the thermostat.

The less expensive way is to replace it with a one piece stainless steel braided line from the case to the thermostat.
Old 09-10-2010, 01:12 PM
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Thank you very much, that is all I needed to know. Mathieu
Old 09-10-2010, 01:15 PM
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If you decide to have a stainless braided line made up for that, use size AN16 line that is 7/8" inside diameter.
Old 09-10-2010, 01:35 PM
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Thanks. I think I will use the "backdate" oil lines. For peace of mind I prefer using hard lines under the engine rather than braided lines.

Old 09-10-2010, 01:52 PM
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