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

What would happen???

Discussion in '4 Cylinder' started by toyota4wd, Jan 17, 2013.

  1. Jan 17, 2013 at 7:37 PM
    #1
    toyota4wd

    toyota4wd [OP] Active Member

    Joined:
    Sep 28, 2012
    Member:
    #87910
    Messages:
    36
    Gender:
    Male
    Vehicle:
    08 SR5 4 cyl 5 on the floor
    What would happen If I worked up the nerve to take my lil 4 banger past 4500 rpm??? Would it go back to the future? Would it blow up?(never) or would it just sound really cool when that vvti kicks in? THE WORLD MAY NEVER KNOW!:D
     
  2. Jan 17, 2013 at 7:52 PM
    #2
    Rich91710

    Rich91710 Well-Known Member

    Joined:
    Feb 23, 2012
    Member:
    #73470
    Messages:
    16,496
    Gender:
    Male
    First Name:
    Rich
    Los Angeles
    Vehicle:
    08 Base
    Satoshi with FJ badge, factory cruise, factory intermittent wipers, Redline Tuning hood-lift struts, Hellwig Swaybar, Rosen DVD-Nav
    Isn't redline at 5500?

    Nothing bad will happen. The ignition system has a rev limiter that will hold RPM.
    Biggest concern is accidentally downshifting at too high of a speed... rev limiter can't protect against that.

    Back in the 90s when electronic controls were phased into automatic transmissions, I was told by a Ford service manager that the TCU would not allow the trans to engage if it would result in an overrev... not sure that I'd trust that.
     
  3. Jan 18, 2013 at 4:33 AM
    #3
    toyota4wd

    toyota4wd [OP] Active Member

    Joined:
    Sep 28, 2012
    Member:
    #87910
    Messages:
    36
    Gender:
    Male
    Vehicle:
    08 SR5 4 cyl 5 on the floor
    The red line on mine is 6000 but I think that it would be screaming at that. I've only had it up to 4500 and that was only stationary revving it. I shift at around 3500
     
  4. Jan 18, 2013 at 4:57 AM
    #4
    adrstout

    adrstout Well-Known Member

    Joined:
    Feb 20, 2012
    Member:
    #73247
    Messages:
    332
    Gender:
    Male
    First Name:
    Adam
    Indiana
    Vehicle:
    '12 4cyl SR5 4x4
    Cooper AT3s, Yellow wire mod, Diff breather mod, 2nd air filter delete, Tonneau cover, Hitch receiver w/ Toyota cap, Stubby antenna, BHLM, Debadged, Tinted tails (slightly), Grill/valence/wheel centercaps painted black, Plastiderped rear bumper
    Nothing. I rarely hit mine but do from time to time. 5500 froma 4 banger? Pretty sure they were conservative anyway.
     
  5. Jan 18, 2013 at 9:25 AM
    #5
    DGXR

    DGXR Well-Known Member

    Joined:
    Sep 1, 2009
    Member:
    #22094
    Messages:
    921
    Gender:
    Male
    First Name:
    Friend
    Sacramento, CA
    Vehicle:
    2006 2.7L SR5 2-wheel drive
    aFe Pro Dry air filter, magnetic oil drain plug, synthetic seat covers, steering wheel cover
    Yes I agree the 5500 redline is probably conservative, as Toyota is with many other things (e.g. speedo error) although this is a large 4-cylinder. Anyway, I drive my truck gently 99% of the time, and since there's a brief, steep uphill climb in my weekly routine, it's a great excuse to "clear out the carbon" by completely flooring it every week in my 4cyl automatic until it decides to shift, usually around 5000-5500 RPM. I've been doing this for years, no problems whatsoever.
     
  6. Jan 18, 2013 at 9:38 AM
    #6
    T Fades

    T Fades Well-Known Member

    Joined:
    Aug 17, 2011
    Member:
    #61862
    Messages:
    1,633
    Gender:
    Male
    Simi Valley, CA
    Vehicle:
    '11 PreRunner V6 2wd DCLB
    Satoshi, debadged, rear view mirror bracket, tail gate hose clamps, trimmed mud flaps.
    Ah, to be 18 again.

    Hitting the rev limiter ain't good for any vehicle. Would recommend not to do it. Get a civic if you want an engine that likes high rpm's.

    You can definately blow your motor if at the limiter. If it is only once for a split second, chances are not too much damage will be done.
     
  7. Jan 18, 2013 at 9:41 AM
    #7
    Boerseun

    Boerseun Well-Known Member

    Joined:
    Jul 25, 2011
    Member:
    #60538
    Messages:
    2,723
    Gender:
    Male
    First Name:
    Ferdie
    Sarasota, Florida
    Vehicle:
    02 PreRunner DoubleCab TRD
    Bull bar, nerf bars, bed extender, tonneu cover, bug deflector, wish list,....
    Nothing will happen if you do it for short spurts, but I would not recommend it. Why take chances ruining your engine.
     
  8. Jan 18, 2013 at 9:44 AM
    #8
    Boerseun

    Boerseun Well-Known Member

    Joined:
    Jul 25, 2011
    Member:
    #60538
    Messages:
    2,723
    Gender:
    Male
    First Name:
    Ferdie
    Sarasota, Florida
    Vehicle:
    02 PreRunner DoubleCab TRD
    Bull bar, nerf bars, bed extender, tonneu cover, bug deflector, wish list,....
    If you want to rev it, it's actually better to rev it while driving it and having some load on the engine than just free revving it. Free revving will cause rapid accelleration and decelleration which puts more tension on all the parts than gradual controlled tension while driving.
     
  9. Jan 18, 2013 at 1:31 PM
    #9
    ecoterragaia

    ecoterragaia Well-Known Member

    Joined:
    Jan 23, 2011
    Member:
    #49786
    Messages:
    474
    Gender:
    Male
    Bumpass, VA
    Vehicle:
    '06 Regular Cab, 4X4, 2.7L
    It's not the typical 4 cylinder like you'd find in a passenger car, it's designed for torque not horsepower. Compare the piston diameter and stroke to other 4 cylinders you'll see what I mean.

    5500 rpm redline on this engine is as conservative as 6500 rpm redline on my wife's Honda.
     
  10. Jan 18, 2013 at 5:07 PM
    #10
    trooper12

    trooper12 Well-Known Member

    Joined:
    Feb 23, 2012
    Member:
    #73480
    Messages:
    212
    Gender:
    Male
    First Name:
    Spencer
    Trabuco Canyon, CA
    Vehicle:
    2012 SR5 PreRunner
    maxtrac 4" lift spindles, wheelers 1.5" 3 leaf pack. nothin special...
    I redline my truck about 2 or 3 times a week, and it hasnt blown up yet. its a 4cyl they like to be reved. When im driving on the highway up to school i put cruse control on at 75 mph and the rpm's are 3,250+ for hours and ive had no problems with it
     
  11. Jan 18, 2013 at 5:14 PM
    #11
    RelentlessFab

    RelentlessFab Tacoma offroad armor fabricating beast Vendor

    Joined:
    Feb 17, 2008
    Member:
    #4772
    Messages:
    13,375
    Gender:
    Male
    First Name:
    Eric
    Eastern side of the Sierras, NV
    Vehicle:
    07 SR5 4x4> 03 SR5 4x4 total> 14 Crewmax TRD
    Had tons on the Taco's.... new truck is pretty stock
    I redline my little 3rz probably weekly, when trying to merge into freeway traffic on uphill onramps. Only hit rev limiter a couple times but thats rare, usually when snow wheeling.:burnrubber:
     
  12. Jan 18, 2013 at 8:24 PM
    #12
    Rich91710

    Rich91710 Well-Known Member

    Joined:
    Feb 23, 2012
    Member:
    #73470
    Messages:
    16,496
    Gender:
    Male
    First Name:
    Rich
    Los Angeles
    Vehicle:
    08 Base
    Satoshi with FJ badge, factory cruise, factory intermittent wipers, Redline Tuning hood-lift struts, Hellwig Swaybar, Rosen DVD-Nav
    You want to shift at peak HP.
    Going too high on the power curve is as bad as going too low, it's just easier to recover.

    My motorcycle's rev limiter is at 5500, but if I shift above 5200, there is a VERY noticeable loss of pull before the limiter hits.

    If you hit the limiter, you've already lost the race if the other guy knows how to drive.
     
  13. Jan 18, 2013 at 8:41 PM
    #13
    MightyMouse-SCT

    MightyMouse-SCT Well-Known Member

    Joined:
    Oct 18, 2010
    Member:
    #44862
    Messages:
    15,500
    Gender:
    Male
    First Name:
    Gabriel
    O'SIDE CA
    Vehicle:
    MightyMouse-SCT - 2011 LT 4x4 Desert Runner
    Long Travel Total chaos kit, fox shocks, smp fab , dmz sua, glassworks, method wheels.
    I rev mine from 4k- 5k a lot . I smacked rev limiter last weekend about 6 times . Truck feels great at 4-5k rpm.
     
  14. Jan 18, 2013 at 8:42 PM
    #14
    MightyMouse-SCT

    MightyMouse-SCT Well-Known Member

    Joined:
    Oct 18, 2010
    Member:
    #44862
    Messages:
    15,500
    Gender:
    Male
    First Name:
    Gabriel
    O'SIDE CA
    Vehicle:
    MightyMouse-SCT - 2011 LT 4x4 Desert Runner
    Long Travel Total chaos kit, fox shocks, smp fab , dmz sua, glassworks, method wheels.
    Yep
     
  15. Jan 18, 2013 at 8:43 PM
    #15
    The Traveler

    The Traveler REBELTACO

    Joined:
    Mar 28, 2012
    Member:
    #75806
    Messages:
    6,779
    Gender:
    Male
    First Name:
    Matt
    SoCal
    Vehicle:
    '10 Long Travel 4x4 DCSB
    Total Chaos 3.5" LT kit, King remote resi 8x2.5 coilovers, Glassworks Unlimited fiberglass fenders and bedsides, Icon resi rears, All Pro Expo leaf pack, Wheeler's super bumps, drop in AFE Pro Dry-S, Aero-Turbine 2525XL Muffler, Spidertrax, Rigid Industries Dually Amber Floods, rock lights, Strobe amber/white dust lights, bushwhacker fender flares, CB and HAM radios, Pelfreybilt Off Road front three hoop bumper, All-Pro APEX kickout sliders, CBI Trail Rider rear bumper, Tres Tacos LED rock lights, 50" LED Light Bar,
    Word of warning.

    Revving like that under no load (in neutral or park) can damage your crankshaft. It's not the final velocity of the crank that damages it, it's the sudden acceleration that can screw things up.
     
  16. Jan 18, 2013 at 8:46 PM
    #16
    The Traveler

    The Traveler REBELTACO

    Joined:
    Mar 28, 2012
    Member:
    #75806
    Messages:
    6,779
    Gender:
    Male
    First Name:
    Matt
    SoCal
    Vehicle:
    '10 Long Travel 4x4 DCSB
    Total Chaos 3.5" LT kit, King remote resi 8x2.5 coilovers, Glassworks Unlimited fiberglass fenders and bedsides, Icon resi rears, All Pro Expo leaf pack, Wheeler's super bumps, drop in AFE Pro Dry-S, Aero-Turbine 2525XL Muffler, Spidertrax, Rigid Industries Dually Amber Floods, rock lights, Strobe amber/white dust lights, bushwhacker fender flares, CB and HAM radios, Pelfreybilt Off Road front three hoop bumper, All-Pro APEX kickout sliders, CBI Trail Rider rear bumper, Tres Tacos LED rock lights, 50" LED Light Bar,
    And, just because I used to race high power muscle cars on big tracks, I have to say this...

    Not exactly. Many times, it's a better idea to shift higher than your peak HP RPM because the next gear will fall right into the power band, giving you an advantage in the next gear up. That all depends, however, on how badly your HP/TQ drops off after the peak. If it's not too bad a cliff, I'd keep going and then shift throwing you right into the powerband on the next gear.
     
  17. Jan 18, 2013 at 8:55 PM
    #17
    worthywads

    worthywads Well-Known Member

    Joined:
    Jun 25, 2011
    Member:
    #58841
    Messages:
    3,410
    Gender:
    Male
    Peoples Republic of Boulder
    Vehicle:
    05 5-lug access I4 Stick, 70 Challenger Vert
    About what an 81 Z28 would do off the showroom floor.
     
  18. Jan 18, 2013 at 8:57 PM
    #18
    MightyMouse-SCT

    MightyMouse-SCT Well-Known Member

    Joined:
    Oct 18, 2010
    Member:
    #44862
    Messages:
    15,500
    Gender:
    Male
    First Name:
    Gabriel
    O'SIDE CA
    Vehicle:
    MightyMouse-SCT - 2011 LT 4x4 Desert Runner
    Long Travel Total chaos kit, fox shocks, smp fab , dmz sua, glassworks, method wheels.
  19. Jan 18, 2013 at 8:59 PM
    #19
    Rich91710

    Rich91710 Well-Known Member

    Joined:
    Feb 23, 2012
    Member:
    #73470
    Messages:
    16,496
    Gender:
    Male
    First Name:
    Rich
    Los Angeles
    Vehicle:
    08 Base
    Satoshi with FJ badge, factory cruise, factory intermittent wipers, Redline Tuning hood-lift struts, Hellwig Swaybar, Rosen DVD-Nav
    It does depend on your gearing.
    On my Vulcan, the low end is pretty strong so it's no killer if I shift 500 before peak.

    My dirtbike is a WR250F, and the wide-ratio trans does make for some interesting gear choices when the trail gets tight.
     
  20. Jan 18, 2013 at 8:59 PM
    #20
    steve o 77

    steve o 77 braaap

    Joined:
    Nov 29, 2009
    Member:
    #26726
    Messages:
    19,912
    Gender:
    Male
    First Name:
    Steven
    In a corn field, OH
    Vehicle:
    2001 4x4 5Spd Xtra Cab V6
    265/75/16 BFG A/T's, OME 881's, Wheelers 5 leaf pack, 5100's, Home Made Sliders
    I used to rev my AE86 to 8k at least weekly, made that 100hp seem fast :laugh:

    You'll be fine.
     
To Top