2.3 DOHC motor - correct operating temp

[thebanjoman]

Rock Auto suggests thermostat numbers are same for J18 and J23.   I'll confirm/deny this with actual Suzuki part number now that I've found a site I can get them from .

I'll get the right stant thermostat and replace what I have as I now question the car quest one I have now.  I'll test it with hot water before installing. I know how to install it oriented properly.

I'll make an attempt at finding Aerio radiator size to see how much different it is in size from the V6 Vitara one I have now.

As for testing the coolant tube.  I'll ask questions if I need to get that far.

Dimensions. 

Aerio. 13.75 x 28.25 x 1. 388 cu in 
Sport.  16.75 x 19 x 1.  318 cu in

Diff 70 cu in 

These are outside diameter not actual volumes but yes the sport radiator is smaller by  about 20 percent.  Of course these are VERY rough estimates.  

I also guess I should find out the cfm rating of Aerio stock fan too.

There is room to have a thicker aluminum radiator made to Sport dimensions but I hope it doesn't come to that.

wow, lots or area in that Aerio,  388.
what  about a v6 grand vitara ,  I wonder what size it is.? H x L.

here is hoping a better ,  thermostat helps.....! cheers !

   OK   I went on Suzukicarparts.com  looking at details     This site lists SAME part for Aerio (j23) vs Sport (J18)   
   Rock-Auto also lists the SAME Thermosta
   Suzuki Car Parts

  1767065D00 - THERMOSTAT  Aerio
  1767065D00 - THERMOSTAT  Sidekick Sport
   
  Rock Auto

  STANT 14378 {#1767065D00}
  STANT 14378 {#1767065D00} 

  Stant Website lists for 2005 Aerio  (this is my year motor)  14378 . Same as Sidekick Sport. 

  So I will order a Stant 14378.  I took Car Quest's word for the thermostat that they gave me. 
  It DID fit but does it work the same??   I have no ideal.

  I'll get a Stant, put it in and retry my tests.

 The Denso 221-4801 Radiator that I have is a V6 Grand Vitara radiator.

I had a discussion over email with Brent At Trail Tough in Oregon..    He provided this information, which I need to read up more on. 
I did use the J23 fuel injectors on the motor.

Your radiator is sufficient. A Moto Rad #2319-180 thermostat will help.
The 1.8 fuel map is not correct for the 2.3 displacement. Lean fuel air
ratio. It will run OK but hotter temperatures would be expected.
Disconnecting the vacuum hose from the fuel pressure regulator will
increase fuel pressure to help compensate for the incorrect management.

From what I am reading, It does make sense that lean fuel air ratio will make engine run hotter.

I'm going to try this in the shop and see what happens and check on the temps.