O2 Sensor Fitting
 

Well i got a BBK Off road H-pipe, and had to have a new o2 fitting welded on because of clearance problems. How can I plug the old fitting? I tried High Temp Red RTV, but it seamed to just melt a little and get blown out. Can't find a bolt short enough or large enough

JB weld maybe??

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Clint L.
White 95 Cobra #3637
58cc GT40X heads with mild porting, Crane 2031 cam, FRPP 65 TB, 1.7s, Cobra intake, homeade cold air, 155lph, pullies, Tokico Illuminas, C springs, GW LCAs, Kenny Brown super subs, Steeda CC plates, aluminum driveshaft, Steeda quadrant, B&M ripper, Kirban FPR, MSD6A, Taylor wires, Mac shorties, off road hpipe, 2 1/2 ultra flows w/ dumps, R hood, Euro clear corners, stock 3.08s
13.61 @ 105.7 w/ 2.22 <-- 284 rwhp / 323 rwtq

EASY SOLUTION: get Champion RF18YC spark plugs. The 18mm thread will fit right in there. http://www.mustangworks.com/msgboard/smile.gif

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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch

Damn, what kind of vehicle uses that large of a thread?

C'mon, haven't you guys ever worked on an old 300 inline-6 Ford pickup truck? Or a pre-'70 302? Almost all of them had 18mm plug threads. Those were the standard until they wanted to increase valve size and redesign combustion chambers for more efficiency.

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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch