Re: {Chrysler 300} Secondary Water Temp Sensor Location on a 413 with A/C

[John Grady <jkg@xxxxxxxxxxxxxxxxx>]

hi that the whole point the whole motor is “ before the thermostat , water circulates on bypass . you can measure temp anywhere

hemi has access to water between ports at intake at head , those ram block off blocks may cover water ports on B block ( I do not remember ) or tap head ? where it fits  nice ? 

On Mar 22, 2025, at 12:37 PM, James Douglas <jdd@xxxxxxxxxx> wrote:



John,

 

I am planning on my EFI conversion. The EMC needs a very good temp sensor. It MUST be before the thermostat. 

 

Later RB engines had water pump housings with multiple points to screw in a sensor.  I am wondering if anyone has drilled an early one with a boss with success. If not, then I may have to pull the front of the engine clean and put on a new aluminum one to get the ports I need. 

 

This is a PITA, although I stripped everything 24 months ago and so all the bolts and stuff are new…

 

James

 

From: John Grady <jkg@xxxxxxxxxxxxxxxxx>
Sent: Saturday, March 22, 2025 07:37
To: James Douglas <jdd@xxxxxxxxxx>
Cc: chrysler-300-club-international@xxxxxxxxxxxxxxxx
Subject: Re: {Chrysler 300} Secondary Water Temp Sensor Location on a 413 with A/C

 

whole engine is at same temp for that purpose , put a brass tee on heater hose  tapping ?

On Mar 21, 2025, at 9:04 PM, 'James Douglas' via Chrysler 300 Club International <chrysler-300-club-international@xxxxxxxxxxxxxxxx> wrote:



Has anyone found a good secondary location to drill into the water pump housing to place a second water temperature sensor?

 

I know that the later 440’s used a different housing that had the sensors placed so that you could get it out without having to lift up the A/C. But as far as I can tell the 413 housing have no such boss to be drilled.

 

If anyone has found a good place, I would like to know.

 

I looked into the water neck risers with which take a side mounted sender, but the A/C will not allow for a raiser to be used.

 

Thanks, James

 

 

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