 Paging Marty.......(Maltese Falcon), I gots me a bung hole question! |
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| Marv's3.6six |
 Aug 30 2005, 11:56 AM
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Actual member 7"  Group: Members Posts: 695 Joined: 22-November 04 From: Huntington Beach, Ca. Member No.: 3,165 Region Association: Southern California 
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Sounds kinda gross but its really an "02 sensor bung" question. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif)
I am getting ready to assemble my hot rod,.........Question where do I weld onto your headers the "Big Nuts" for the 02 bungs? I am running a '95 Euro 3.6 993 engine with your 1 5/8" headers. Thanx in advance Marv |
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| neo914-6 |
Aug 30 2005, 01:08 PM
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neo life Group: Members Posts: 5,086 Joined: 16-January 03 From: Willow Glen (San Jose) Member No.: 159 |
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| Maltese Falcon |
Aug 30 2005, 10:18 PM
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Advanced Member Group: Members Posts: 4,645 Joined: 14-September 04 From: Mulholland SoCal Member No.: 2,755 Region Association: None |
Marv, better check the OD, I believe that you settled for the 1.75" od for your big 3.6 .
The O2 bung goes into the collector of the header, just make sure that you "Pre select" the area where it goes--taking into consideration clearence for the O2 probe (possible axle travel), O2 wires/ proximity to heat source, ability to get a wrench on (and turn it) . It is best to "Sample " the O2 sensor from all 6 cyls, but doing it in the muffler is not good. Sampling in one collector= only 3 cyls. But since all injectors are functioning within 99.9% of identical efficency, the collector works great. You would need a failing injector to give you a bad O2 signal...and you would feel that in the cars hesitant running anyway. Marty |
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| Marv's3.6six |
Aug 31 2005, 10:27 AM
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Actual member 7" Group: Members Posts: 695 Joined: 22-November 04 From: Huntington Beach, Ca. Member No.: 3,165 Region Association: Southern California
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Marty Thanx for the response. You R right the headers were 'sposed to be 1 3/4" not 1 5/8" I will check OD... I will put bungs on collectors as you recommend, however Steve Wong sez I don't need an 02 since passing smog is not an issue.
Steve is gonna do a custom burn for me, dyno and all. I will put the bung nuts on but not drill the collectors until I need to, if ever. About the injectors working within 99.9% efficency.............. I sent my injectors to RC Engineering to have them match flowed... OMG... I am sure glad I did, there was as much as 8% difference across all injectors and a couple had faulty spray pattern! Now they are all perfect and are within .001% of each other, money well spent. (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) Thanx again.... Hey are you going to GAF? Marv |
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| Maltese Falcon |
Aug 31 2005, 07:39 PM
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Advanced Member Group: Members Posts: 4,645 Joined: 14-September 04 From: Mulholland SoCal Member No.: 2,755 Region Association: None |
Marv, RC = (IMG:http://www.914world.com/bbs2/html/emoticons/aktion035.gif)
GAF definitely- however I'm driving around in the truck that weekend as I have lots of items that I'm bringing up for friends from out of town, and going to be buying lots of schlock for Matt's new 914 cup car. Also picking up a car there--so NO sitting out in the sun all day with a car (IMG:http://www.914world.com/bbs2/html/emoticons/sad.gif) I'll pm you with cell#...perhaps we can have a mango margarita (IMG:http://www.914world.com/bbs2/html/emoticons/cool.gif) Marty |
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