IAT Sensor: Aluminum or Steel Bung?
#2
I'm pretty sure they make both only to satisfy people who are welding. You can't really weld aluminum to steel intake piping. The steel probably fluctuates a bit less with heatsoak (steel doesn't transfer heat as well as aluminum), but I doubt it's enough to even notice. I would go with whatever your intake piping is in case you decide to do a real weld job at some point.
#4
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So you just discarded the bung and threaded the sensor in directly? Or is the bung threaded?
RTV or teflon?
And who the hell is Heather Bambrick? Why did she show up on a google image search of "iat bung" ?
RTV or teflon?
And who the hell is Heather Bambrick? Why did she show up on a google image search of "iat bung" ?
#5
I'm pretty sure they make both only to satisfy people who are welding. You can't really weld aluminum to steel intake piping. The steel probably fluctuates a bit less with heatsoak (steel doesn't transfer heat as well as aluminum), but I doubt it's enough to even notice. I would go with whatever your intake piping is in case you decide to do a real weld job at some point.
#6
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I did the same as wayne curr, drilled and tapped the intercooler end tank. You tap the end tank and thread the sensor directly in (no bung). There's only a couple threads, and most intercoolers are aluminum, so don't over tighten it. My IAT sensor came with some red stuff on the threads, that's all I used.
#7
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Yeah, I did the same thing when relocating my IAT sensor out from behind the radiator to decrease heatsoak. I just removed the intercooler, drilled a hole in the cold-side end tank, and tapped it. The sensor is screwed directly into the intercooler, with no bung. As curly said, you only get a thread or two worth of engagement doing it this way, but it doesn't really matter since the IAT sensor isn't very heavy, that area isn't subjected to hellish vibrations, and there's not much pressure behind it.
Nope. Just screwed it in. Any air leakage at this area is going to be minuscule at worst. If it's going to keep you up at night, put whatever makes you most comfortable on the threads. But there's no real need for it.
She's best known as a vocalist for the Royal Jelly Orchestra, but is also credited as the inventor of the free-air thermistor.
RTV or teflon?
And who the hell is Heather Bambrick? Why did she show up on a google image search of "iat bung" ?
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It's About Time. No idea on the bung part of it though.
I like the idea of putting the iat sensor in the intercooler's end tank to reduce heat soak. Does it work? Do your temp readings at idle seem more accurate now? Impact on hot start?
If your experiences are positive,I think I'll copy, but I also think I'll go ahead and weld on a bung. Something about just threading the sensor in to the aluminum end tank doesn't sit right with me.
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Previously, I had the sensor about 6" from the throttle body, which was a very convenient place to put it, but just about a worst-case scenario from a thermo standpoint, as it was directly behind the radiator. I didn't think that this would be a problem with an open-element sensor, but as we all know, that's not the case.
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I think I located my sensor where heat soak caused by the radiator would be some what minimized. However, I am a teeny bit lean after hot restarts, so I assume there is some degree of heat soak. This is not leading to any drivability issues per say, but my goal is more primarily aimed at maximizing the correctness of the fueling calculations to minimize the need for EGO feedback at idle and light load. The more accurate the fueling, the less often my LTFTs will walk to max and pop CELs.
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