Jump to content
SAU Community

Inlet temperature at plenum

wolverine
 Share

Recommended Posts

wolverine Grand Master

wolverine

Posted
  • Author
Posted

i have slipped a thermocouple near the plenum and have been taking some readings. i have only had it in for 2 days. i thought it would be interesting to get some numbers before making any changes but i would like to know what is a reasonable temp range (allowing that ambient conditions can vary).

wolverine Grand Master

wolverine

Posted
  • Author
Posted

driving to work it has never gone above 20 degrees (usually around 15 deg) except sitting at the lights, 30 degrees on sunday with spirited consistent driving and 48 deg spike on booting it up a hill from a near standstill, as the airflow increased the temp eased back.

at rest you can see temp rising as it soaks engine heat.

Roy Grand Master

Roy

Posted
Posted
is it a front mount cooler? i saw this fellas car at a shop the other day and they had a thermo gun on the cooler pipes and it was actually hotter going into the motor than it was coming out of the turbo due to the way he was running his cooler piping.

Be careful, those guns perhaps tell you the surface temperature of the piping, not the temp of the airflow inside the piping.

wolverine Grand Master

wolverine

Posted
  • Author
Posted

sunday was around 18-20 degrees, i had the back seat out of the car installing sound deadening and it was a pretty warm for this time of year.

mornings obviously cooler so i imagine around 10 degrees ambient.

i want to move the thermocouple into the airbox and get some readings from in there later.

wolverine Grand Master

wolverine

Posted
  • Author
Posted

it was reading 30degrees on steady/spirited driving on sunday which was approximately 10 degrees above (est.)ambient. at the lights the temp would run significantly higher as the pipework heats up and when you start moving again temps decrease (as expected). the highest single temp it reached was 48 degrees when i got a slight cramp in my right foot up a hill.

how high is too high??

Roy Grand Master

Roy

Posted
Posted

What is a reasonable estimate of intercooler effeciency , 80-85%?

So of you are seeing more then say a 20% diference in temp then perhaps time for a better intercooler, dropping boost or perhaps require better shrouding around the intercooler. So on a 30 degree day shoudl be able to keep within 6-10 deg of ambient prvioded you arent cooking air with your turbo.... on paper it sounds right, dotn know about in practice

Cubes Grand Master

Cubes

Posted
Posted

I would be very interested to see how the new motor affects the air temp compared to amb temp at the same boost levels.

The new motor obviously breathes much easier due to ~5mm x 2 larger inlet valves, slightly bigger ports etc.

Where can I get the required gear to take the readings I need, and what do I need? Jaycar?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Zabuza
      Need AC Compressor for R32

      By Zabuza · Posted

      Ok glad you clarified on the frenchy’s options , I was worried about if my oem hoses would fit the new compressor or not if I just bought the bracket/compressor kit ,  didn’t realize they also sold a larger full conversion kit. Hmm may just go oem in that case then to make it easy only because I plan to sell this car to upgrade to a 32 GTR or 34 GTT.
    • sausagepianist
      V36 2008 Coupe Wiring Differences with Android Screen

      By sausagepianist · Posted

      Right, here's a video of the basic operation at least.  This is what you can expect day to day when you turn the car on and it boots from standby.  The only thing from a media point of view I haven't gotten working is for it to autoplay plexamp when it turns on from standby (it works from cold boot) but that's more of a plexamp problem as it will autoplay other music players.  Also attached is my one stray cable.  It's part of the screen's wiring adapters but there's just nowhere for it to go in my car.  I've just now done a bit of research and found a matching port on a 2010-2014 head unit with BOSE.  Mine has no BOSE so that's that case pretty much closed I think.  Plugging in the Infiniti AC panel basically did nothing for me, so that's a dead end as well.  Next port of call is to mess with this CANBUS module and see what I can find from it.  I found this resource containing the DBC files for a 2010+ G37 : https://github.com/icecube45/Dash_InfinitiG37/blob/master/InfinitiG37.dbc I'll now have something to go from when I try to extract my CANBUS data so I can see if the HVAC Mode, Fan Speed, Temperature, etc. match and also the gear shifter position.  It's a pretty big assumption that it's just mismatched CAN signals but considering all the devices in the CAN network are talking to each other (AC can be fully adjusted just with no info on screen) it might be a safe one.  I will report back WhatsApp Video 2025-02-26 at 12.49.10.mp4
    • sausagepianist
      V36 2008 Coupe Wiring Differences with Android Screen

      By sausagepianist · Posted

      Thanks for that Paul.  Do you think if I posted a picture you'd be able to remember where it went? 
    • sausagepianist
      V36 2008 Coupe Wiring Differences with Android Screen

      By sausagepianist · Posted

      Sorry Duncan, I didn't get a notification for the replies.  Thanks for responding!  It's a full Android device, but does allow you to use CarPlay/AA as well.  This is the one I bought from NaviRS on AliExpress: https://www.aliexpress.com/item/1005006368602668.html?spm=a2g0o.order_list.order_list_main.111.59aa1802JDzQ0E - the 2K 8G-256G CAM variant but it seems to have gone up by £170 since I bought it!  My purchase was ￡307.14.   It's not the fastest thing in the world but performs perfectly adequately.  It stays on standby unless I disconnect the battery and let it power down, then it's just a fairly standard Android bootup time from cold.  The DSP Equaliser is very nice and made the standard stereo system sound pretty decent compared to the stock screen.  Perhaps I can take a video of it when I get a sec. It *allegedly* supports the reverse camera, but I'm yet to get that working.  It has options for reverse cam (a camera unit can be bought separately) or 360 cameras (also bought separately).  To be fair it doesn't seem to detect that the shifter was put into reverse but I'm working on a theory about this as well.  At the moment I'm going without which is a bit annoying considering the car is an absolute canal barge but so far I haven't caused any damage I'll grab a picture of the wire I'm missing later today when I can get outside.  My theory, by the by, is that not only is the head unit different, but the CANBUS network has different signals for the different years.  I think this because I have a spare AC panel from a newer Infiniti G37 (as opposed to my Nissan panel) which wouldn't control anything except the volume when I had it wired up with the stock system.  I'm going to throw it back in and see if the screen will respond to it.  I've just ordered an arduino CANBUS module so I can have a look at the signals going around the car and see if I can spot anything.  I'm thinking if I can work out what it's expecting vs what it's getting I might be able to translate and relay the signal back but so far just a theory anyway. I also found this on my travels, so far the only one that specifically matches my car: https://www.aliexpress.com/item/1005002822934280.html?spm=a2g0s.imconversation.0.0.33433e5fgttovi If you look at the picture of the before, it has the card reader slot, and the picture of the head unit is exactly the same as the one pictured in my original post.  I asked if they sell the cables separately but sadly they won't.  I didn't want to just buy this one because it's a super old Android version and only dual core - likely slow as hell. 
    • sonicii
      V35 Overheat + Coolant Boil & Overflow + Engine not Starting

      By sonicii · Posted

      As above, you did refill the coolant and burp the system before running it again didn't you?
×
×
  • Create New...