GM iat sensor install, how deep?
#1
GM iat sensor install, how deep?
hi guys i recently got ms and bought a gm iat sensor with it to delete the maf on my 93 miata, i cut a hole in the aluminum pipe and jb welded the bung that came with the gm iat and in the picture its about hand tight at the moment and its pretty tight to screw it in more, my question is. is that enough poke for the sensor to pick up the air? its about quarter of an inch or less in the piping. Thanks guys!
#5
I went almost all the way to the top of the threads on mine. Heat soak is what you don't want, and I can confirm after last weekend, that they can and will heat soak when subjected to a constant flow if ouside hot air. With my sensor located near the radiator, waiting in line at stoplights, I was getting readings that were 50-60-70- 80 degrees over ambient.
Moved sensor to intercooler tank, threaded is real deal like, problem gone. I now read within a couple degrees of ambient.
Moved sensor to intercooler tank, threaded is real deal like, problem gone. I now read within a couple degrees of ambient.
#12
As long as the sensor element, that metal saucer-shaped bit at the tip of the the GM IAT sensor, is completely in the air flow, you're accurate.
In gesso's photo, his could even have been 2-3mm shallower.
Air tends to flow more along walls, unless all your plumbing is completely straight up to the point of interest, so there's no point going in any deeper than necessary (and you just introduce more turbulance).
In gesso's photo, his could even have been 2-3mm shallower.
Air tends to flow more along walls, unless all your plumbing is completely straight up to the point of interest, so there's no point going in any deeper than necessary (and you just introduce more turbulance).
#13
Moderator
iTrader: (12)
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,884
Total Cats: 3,075
Air actually flows slower along the surfaces and not more quickly but it won't effect his results. The sensor is certainly exposed adequately.
For discussion of airflow over a surface study "boundary layer ".
For discussion of airflow over a surface study "boundary layer ".
#14
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,688
Total Cats: 4,113
hi guys i recently got ms and bought a gm iat sensor with it to delete the maf on my 93 miata, i cut a hole in the aluminum pipe and jb welded the bung that came with the gm iat and in the picture its about hand tight at the moment and its pretty tight to screw it in more, my question is. is that enough poke for the sensor to pick up the air? its about quarter of an inch or less in the piping. Thanks guys!
#17
Moderator
iTrader: (12)
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 20,884
Total Cats: 3,075
Does anyone sell a 2.5" diameter pipe with the hole or bung fitting for the IAT? I am hesitant to try to drill my steel piping. I also thought about putting the IAT through a small hole in one of my rubber pipe connectors with maybe some sealant around the outside of the hole.