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Old 06-02-2009, 06:08 PM   #1
realwomble
Scooby Newbie
 
Member#: 49305
Join Date: Nov 2003
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2002 Stg.2 WRX Wagon
Silver

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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?

Thanks.
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Last edited by realwomble; 06-02-2009 at 06:13 PM. Reason: typos
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Old 06-03-2009, 05:18 PM   #2
realwomble
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Member#: 49305
Join Date: Nov 2003
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2002 Stg.2 WRX Wagon
Silver

Default

Bump!
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