Page 1 of 2 12 LastLast
Results 1 to 15 of 26

Thread: 20v rev limiter

  1. #1
    Junior Member Carport Converter 4agte's Avatar
    Join Date
    Sep 2005
    Location
    NSW
    Posts
    1,941

    Default 20v rev limiter

    hey guys any idea what the stock rev limit is on a silvertop 20v
    i was under the assumption it was about 8200 or somthing like that
    i seem to be hitting the rev limiter at 7400-7500

    the 20v has been put into an aw11

    would an error code stop the 20v from revving out??

    also my spedo cable is broken right now

    error code i have atm is 14
    anyone able to help with that aswell??? things to check??

  2. #2
    Junior Member Carport Converter 4agte's Avatar
    Join Date
    Sep 2005
    Location
    NSW
    Posts
    1,941

    Default Re: 20v rev limiter

    ok quite a few of the mr2oc.com guys are having the same trouble they seem to think the tacho isnt all that accurate in the aw11....

    thoughts???

  3. #3
    Junior Member Domestic Engineer
    Join Date
    Dec 2005
    Location
    nsw
    Posts
    593

    Default Re: 20v rev limiter

    get a digital tacho and test it

    had one tacho was out 500 rpm

    then if yr rpm limit is still below 8000

    then theres a trick to get it higher

    join spd to #10

    this tricks the ecu telling it theres a spd signal incase u dont have one

    this worked on a race car so if it doesnt on yrs or anything bad happens not my fault heheheheheehehehehehe

  4. #4
    MR 18RG Chief Engine Builder The Witzl's Avatar
    Join Date
    Jul 2005
    Location
    NSW
    Posts
    3,164

    Default Re: 20v rev limiter

    no no... it's because you dont have the SPD signal going into your ECU!!

    Without that SPD signal, the ecu thinks you are "free-revving" and limits the rpm to 7600rpm, opposed to the 8200rpm it's supposed to be.


    This is about the 4th time i've posted this same information too. Im not sure about the AW11, but on an AE92 w/EFI, the speedo dial generates the 4-pulse/RPM signal to the ECU (purple/white wire)..... thus if yer speedo broken... no signal.
    ...... butt scratcher?!


  5. #5
    Junior Member Carport Converter 4agte's Avatar
    Join Date
    Sep 2005
    Location
    NSW
    Posts
    1,941

    Default Re: 20v rev limiter

    ahhh thought that might have been the case thanks guys

    i tried to search but you cant search under 20v or rev so it makes it a tad hard

    ill get that speedo cable fixed and then see if that fixes it i know the levin gearbox has an electronic speed sensor while the aw11 has a mechanical one dosent it so hopefully it shouldnt be an issue

    otherwise ill try sideshows (he didnt tell me) method

  6. #6
    Junior Member Domestic Engineer
    Join Date
    Dec 2005
    Location
    nsw
    Posts
    593

    Default Re: 20v rev limiter

    i know the injecotr pulses work its not perfect but if u dont have spd connected easiest spot is to get a pulse from an injector

  7. #7
    Junior Member Domestic Engineer
    Join Date
    Dec 2005
    Location
    nsw
    Posts
    593

    Default Re: 20v rev limiter

    plus the most pulses u will get to speedo is 8000rpm

    so it might think its only doin 150 kms and u night never hit speed cut

    the car i tested it on was a hill climb car and they dont get up to 180 to test the speed cut

  8. #8
    Junior Member Carport Converter 4agte's Avatar
    Join Date
    Sep 2005
    Location
    NSW
    Posts
    1,941

    Default Re: 20v rev limiter

    well im not exactly going to be doing 180km/hr often if ever so no biggy

  9. #9
    MR 18RG Chief Engine Builder The Witzl's Avatar
    Join Date
    Jul 2005
    Location
    NSW
    Posts
    3,164

    Default Re: 20v rev limiter

    check if your original ECU wiring has the purple wire (for SPD signal)... im pretty sure it should, it will be coming down from your instrument cluster (it's generated inside your speedo gauge).

    Hope you sort it out.
    ...... butt scratcher?!


  10. #10
    Forum Member 1st year Apprentice
    Join Date
    Oct 2006
    Location
    pahang
    Posts
    7

    Default Re: 20v rev limiter

    i'm using 20v BT on my ke70, my speedo is stock from ke70 which it's not digital. so, is it ecu doesnt accept any signal ?

  11. #11
    Junior Member Conversion King Jorrs's Avatar
    Join Date
    Oct 2005
    Location
    NSW
    Posts
    2,499

    Default Re: 20v rev limiter

    how about hooking up a digital speedo/tacho ?
    is it possible to hook up a dash speedo from a Levin or similar corolla ?
    What is autosalon? Sounds kinda homo.
    Quote Originally Posted by tooch
    It's extremely homo. Basically a whole lot of sh1t cars, with ugly wheels, and a lot of 16-20 year old rockstars with trendy mullets and gay shirts.
    Slayer Of Toymods Wookie Slayers

  12. #12
    Junior Member Domestic Engineer
    Join Date
    Dec 2005
    Location
    nsw
    Posts
    593

    Default Re: 20v rev limiter

    i sell adapters that screwonto gbox where the ke20 speedo cable would srew on
    the unit has 3 wires one is 12 one i searth other is correctg signal to the ecu for spd

    then u screw the orig speedo cable onto the adapter and yr speedo works and u have signal to the ecu

    or u could connect injector wire to spd

  13. #13
    Forum Member 1st year Apprentice
    Join Date
    Oct 2006
    Location
    pahang
    Posts
    7

    Default Re: 20v rev limiter

    how much you selling it ? is it compatible with t50 gearbox ?

  14. #14
    Junior Member 1st year Apprentice boon280's Avatar
    Join Date
    Apr 2007
    Location
    S.A
    Posts
    42

    Default Re: 20v rev limiter

    Quote Originally Posted by sideshow
    i know the injecotr pulses work its not perfect but if u dont have spd connected easiest spot is to get a pulse from an injector
    I just tried this but we couldn't get it to work , so I spoke with my auto electrician and he looked at the diagram and said it needs a negative pulse so we just touched the wire on the frame of the buggy at a consistent pulse and we got another 1000 revs, so where did you get the signal from?
    Any help would be appreciated as we are racing again in a week and the extra revs would be great.

  15. #15
    MR 18RG Chief Engine Builder The Witzl's Avatar
    Join Date
    Jul 2005
    Location
    NSW
    Posts
    3,164

    Default Re: 20v rev limiter

    Injectors are also a negative pulse... so Sideshow is right in saying that "in theory, it should work"

    There is another solution... a fantastic little guide taken from twincam.info forums.
    You can use a reed switch and some magnets... and hey presto! SPD signal

    http://www.twincam.info/index.php?showtopic=397
    ...... butt scratcher?!


Similar Threads

  1. Why is my 2jz-gte hitting rev limiter?
    By PlacentaJuan in forum Tech and Conversions
    Replies: 9
    Last Post: 11-10-2006, 01:39 PM
  2. 1JZGTE problem, rev limiter/ idle
    By GZP51 in forum Tech and Conversions
    Replies: 159
    Last Post: 24-09-2006, 03:38 PM
  3. Using Jaycar Rev limiter as "valet mode"
    By Bananaman in forum Tech and Conversions
    Replies: 9
    Last Post: 17-04-2006, 10:33 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •