|06-02-2009, 06:08 PM||#1|
Join Date: Nov 2003
Location: Seattle, WAVehicle:
2002 Stg.2 WRX Wagon
Short story: installed VDO oil temp/pressure senders a long time back.
Used this http://www.egauges.com/vdo_indA.asp?PN=R7965 NPT adapter bushing, left rubber ring on, which degraded leading to a leak... big mess after 4 years.
Anyway, pulled out the temp sender yesterday, cleaned it up and re-installed without the rubber ring, with appropriate thread sealant (permatex high temperature thread selant).
Problem (idiot alert) didn't use a washer.
Torqued down to 18 lbft (spec for stock oil pressure switch), could see a few slivers of aluminium shaved off the block by the (brass?) bushing.
Thankfully the torque spec is low, so no real damage done.
Questions, before I pull out the pressure sender for the same treatment...
a - any harm in leaving this one as is without a washer?
b - should I use a washer (assume yes)
c - what material should the washer be made of? Are brass/aluminium at risk for galvanic corrosion?
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Last edited by realwomble; 06-02-2009 at 06:13 PM. Reason: typos
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