View Full Version : Proper location on intake manifold for a IAT Sensor?

04-18-2011, 03:49 PM
First of all, hi everyone :)

This is my very first post here. As an introduction of myself, I am from QC, Canada (French native) and I'm about to get my ST-165 back on the road after leaving it sit in the backyard garage for *8 years*! I could tell a lot more about it, but for now let's go on with the question.

I just bought a Zeitronix(datalogging)+DasghDAQ(display) package including an intake air temp sensor. Now I need to install the IAT sensor on the intake manifold, but I'm not sure where exactly would be a good location.

I just removed a plug on the LH side of the manifold and found out there was a lot of guk in there, and probably not much flow (see link).


I'm not sure I'd get a good reading at this location, so I'd like to know if anybody installed this sensor, and where.

Furthermore, I will need to drill & tap the hole to install the IAT sensor.
I know it's very important not to throw any metal shaving into the IM, but I feel this can be done without removing the IM, if executed with care. Still, I'd like to hear your opinion/concerns about drilling that hole on the IM in place.

Any thoughts?

Thanks for your help.

04-18-2011, 04:01 PM
Just after the intercooler and before the throttle body itself would probably be best if you can find anywhere to put it. With the top mount that's pretty tough since of course there's not really any piping to work with there. Maybe on the TB adapter itself if you could do it in a way that it seals properly and doesn't interfere with the throttle plate.

04-22-2011, 05:57 PM
I came across some info indicating that IAT must receive enough air flow to prevent heat soak. Therefore, the first location I thought of is no good. Installing it on the TB adapter might be a good idea (can be removed easily), but I'm not sure I'll find a good spot that clears the mechanism, I'll check that out and update with the solution I find.

04-29-2011, 06:32 AM
I finally decided to install the IAT sensor on the intake manifold, but at the larger side plug location instead of the small one. It's not directly in the intake stream path, but very close.

First I removed the large intake plug (without drilling: only used screws, hammer and pliers to pull the plug out):

Then I drilled the removed plug and welded a nut into it, so the sensor could be installed within the modified plug:

And that's about it, now I have charge temp reading on the DashDAQ:

I have no idea if my solution is the best way to do the job, but it wasn't much difficult.
No direct drilling on the intake manifold was required, and that was one less concern for me.

04-30-2011, 09:05 AM
This is where I put mine:


04-30-2011, 02:51 PM
I did mine where the cold start injector goes like vip did above, but your way should be more than sufficient. I actually quite like that location, makes good use of that plug! :)