1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

URD 170 Performance Thermostat 4.0L

Discussion in 'Performance and Tuning' started by anthonytacoma, Oct 29, 2013.

  1. Oct 29, 2013 at 11:48 AM
    #1
    anthonytacoma

    anthonytacoma [OP] Well-Known Member

    Joined:
    Dec 29, 2007
    Member:
    #4026
    Messages:
    149
    Gender:
    Male
    orange county
    Vehicle:
    2011 Tacoma Prerunner dbl. Cab
    URD 170 Performance Thermostat for 1GR-FE 4.0L V6

    Has anybody installed this yet?


    Is it worth it for NA?


    Seems like a fairly inexpensive mod that may benefit a little bit, not really sure though.....?


    any thoughts?
     
  2. Oct 30, 2013 at 4:24 AM
    #2
    Torspd

    Torspd Tor-nication

    Joined:
    Sep 18, 2009
    Member:
    #22958
    Messages:
    5,458
    Gender:
    Male
    First Name:
    Tor
    Houston
    Vehicle:
    MMVI 4.4L 4x4 Access Cab
    Torspd Custom Turbo kit [] Borg Warner 9180EFR Turbo [] ProEFI Pro128 EMS [] TiAL Q BOV [] TiAL V44 Wastegate @ 15psi [] CP Pistons [] CP Carrillo Rods [] ARP Head studs [] ARP Main Studs [] ARP Header - Head Studs [] Ported Heads w/ 1mm oversized valves intake/exhaust [] Brian Crower Forged Stroker Crank [] Darton M.I.D. Sleeved Block [] Kelford Camshafts [] Torspd 170* T-stat mod [] APR Large Fuel Rail [] Aeromotive Stealth 340 LPH Fuel Pump [] FueLab FPR [] APR T56 Conversion Kit [] KP RACING Built T56 [] McLeod Racing Custom Twin Disk Clutch [] One Piece Aluminum Driveshaft [] MGW Shifter [] Custom lowering kit [] Ohlins Front Coilovers [] QA1rear shocks [] Custom Ron Davis Radiator [] Dual SPAL Electric Fans []
    Anyone who purchases a UCON ECU will get that. It lets the run cooler, so additional timing can be added.
    A worthy upgrade to keep your engine farther away from knock, due to those cooler water temps. Basically a cheap safety mod.
     
  3. Nov 1, 2013 at 8:38 AM
    #3
    anthonytacoma

    anthonytacoma [OP] Well-Known Member

    Joined:
    Dec 29, 2007
    Member:
    #4026
    Messages:
    149
    Gender:
    Male
    orange county
    Vehicle:
    2011 Tacoma Prerunner dbl. Cab
    ok thanks

    nothing really gained though without the UCON, you think?

    just asking because URD now sells the thermostat seperate.
     
  4. Nov 1, 2013 at 8:50 AM
    #4
    Torspd

    Torspd Tor-nication

    Joined:
    Sep 18, 2009
    Member:
    #22958
    Messages:
    5,458
    Gender:
    Male
    First Name:
    Tor
    Houston
    Vehicle:
    MMVI 4.4L 4x4 Access Cab
    Torspd Custom Turbo kit [] Borg Warner 9180EFR Turbo [] ProEFI Pro128 EMS [] TiAL Q BOV [] TiAL V44 Wastegate @ 15psi [] CP Pistons [] CP Carrillo Rods [] ARP Head studs [] ARP Main Studs [] ARP Header - Head Studs [] Ported Heads w/ 1mm oversized valves intake/exhaust [] Brian Crower Forged Stroker Crank [] Darton M.I.D. Sleeved Block [] Kelford Camshafts [] Torspd 170* T-stat mod [] APR Large Fuel Rail [] Aeromotive Stealth 340 LPH Fuel Pump [] FueLab FPR [] APR T56 Conversion Kit [] KP RACING Built T56 [] McLeod Racing Custom Twin Disk Clutch [] One Piece Aluminum Driveshaft [] MGW Shifter [] Custom lowering kit [] Ohlins Front Coilovers [] QA1rear shocks [] Custom Ron Davis Radiator [] Dual SPAL Electric Fans []
    Cooler engine temps equals to more power, as heat robs power. Good for all sorts of things. Keep your oil a little cooler. Good for towing. Good for when the geography is really hot. Good for being in the desert and having fun in the dunes...............
     
  5. Nov 1, 2013 at 9:51 AM
    #5
    BillJC

    BillJC Well-Known Member

    Joined:
    May 8, 2011
    Member:
    #56265
    Messages:
    180
    Gender:
    Male
    First Name:
    Bill
    Novato, CA
    Vehicle:
    2011 White SR5 DCLB 4x4
    On a stock motor, a cooler thermostat does nothing as long as your cooling systems is working properly, even when towing. Think about it, if the radiator and water pump are working properly, then they will cool the motor as it heats up beyond the open temp of the thermostat, regardless of the thermostat temp. However, a motor with a modified tune would see a minimal impact as long as you tune the operating temp down to match, but you won't see much of a difference on stock motor.
     
  6. Nov 1, 2013 at 11:22 AM
    #6
    Torspd

    Torspd Tor-nication

    Joined:
    Sep 18, 2009
    Member:
    #22958
    Messages:
    5,458
    Gender:
    Male
    First Name:
    Tor
    Houston
    Vehicle:
    MMVI 4.4L 4x4 Access Cab
    Torspd Custom Turbo kit [] Borg Warner 9180EFR Turbo [] ProEFI Pro128 EMS [] TiAL Q BOV [] TiAL V44 Wastegate @ 15psi [] CP Pistons [] CP Carrillo Rods [] ARP Head studs [] ARP Main Studs [] ARP Header - Head Studs [] Ported Heads w/ 1mm oversized valves intake/exhaust [] Brian Crower Forged Stroker Crank [] Darton M.I.D. Sleeved Block [] Kelford Camshafts [] Torspd 170* T-stat mod [] APR Large Fuel Rail [] Aeromotive Stealth 340 LPH Fuel Pump [] FueLab FPR [] APR T56 Conversion Kit [] KP RACING Built T56 [] McLeod Racing Custom Twin Disk Clutch [] One Piece Aluminum Driveshaft [] MGW Shifter [] Custom lowering kit [] Ohlins Front Coilovers [] QA1rear shocks [] Custom Ron Davis Radiator [] Dual SPAL Electric Fans []
    Call and ask Gadget. Get the down low from URD themselves. :thumbsup:

    What do you mean by "tune the operating temp down"? Just want to make sure I am on the same page.
     
    Last edited: Nov 1, 2013
  7. Nov 1, 2013 at 1:49 PM
    #7
    BillJC

    BillJC Well-Known Member

    Joined:
    May 8, 2011
    Member:
    #56265
    Messages:
    180
    Gender:
    Male
    First Name:
    Bill
    Novato, CA
    Vehicle:
    2011 White SR5 DCLB 4x4
    Most modern ECU have an operating temperature range. Until this time is reached, they are in warmup mode and the fuel and especially spark tables are reduced. I'm not certain about the Tacoma maps, but fuel and spark maps are optimized around 190-195 degrees. Per the Scangauge, operating temp for my truck is 193 degrees. If you install a lower temp thermostat and it doesn't allow the engine to reach 190-195, it will not allow the normal fuel and spark maps. Fuel economy may suffer because the engine still thinks it's "warming up." Again, I'm not sure about Toyota, but in my experience with other vehicles, you are able to bring down the operating temp to match the thermostat that you are installing. On my WRX, I installed a 170 degree unit and subsequently had a tuner bring down the operating temp. This helped immensely with fuel economy and drivability. My tuner made a point of saying that installing a lower temp thermostat without the need for it may actually hurt not help performance.

    If you modify the ECU, ie UCON ECU, it should take this into account and allow lower operating temps if it adds timing for performance gains.
     
    Last edited: Nov 1, 2013
  8. Nov 2, 2013 at 7:34 AM
    #8
    Torspd

    Torspd Tor-nication

    Joined:
    Sep 18, 2009
    Member:
    #22958
    Messages:
    5,458
    Gender:
    Male
    First Name:
    Tor
    Houston
    Vehicle:
    MMVI 4.4L 4x4 Access Cab
    Torspd Custom Turbo kit [] Borg Warner 9180EFR Turbo [] ProEFI Pro128 EMS [] TiAL Q BOV [] TiAL V44 Wastegate @ 15psi [] CP Pistons [] CP Carrillo Rods [] ARP Head studs [] ARP Main Studs [] ARP Header - Head Studs [] Ported Heads w/ 1mm oversized valves intake/exhaust [] Brian Crower Forged Stroker Crank [] Darton M.I.D. Sleeved Block [] Kelford Camshafts [] Torspd 170* T-stat mod [] APR Large Fuel Rail [] Aeromotive Stealth 340 LPH Fuel Pump [] FueLab FPR [] APR T56 Conversion Kit [] KP RACING Built T56 [] McLeod Racing Custom Twin Disk Clutch [] One Piece Aluminum Driveshaft [] MGW Shifter [] Custom lowering kit [] Ohlins Front Coilovers [] QA1rear shocks [] Custom Ron Davis Radiator [] Dual SPAL Electric Fans []
    Ok. That is accurate and true.

    With the Tacoma, it is 168*. Thus why the Tstat is a 170*. But even with the 170* t-stat on these trucks, the sensor is so far away (back of engine) that the ecu sees a higher temp than what is going on at the T-stat.

    The back two cylinders run really hot comparatively to the front two. They are highly prone to knock, and are tuned with less timing that the front cylinder #1.

    So with all of that, it is still a worthy upgrade, especially if you live in a hotter climate area. For those in the snowy areas, the 180* is still best because it helps get the engine warmer.

    Higher engine loads, whether by boost or by towing, can/will increase water temps.
     
To Top