Page 1 of 7 123 ... LastLast
Results 1 to 15 of 96

Thread: 18RG rebuilds and power outputs?

  1. #1
    Junior Member Grease Monkey Gunna's Avatar
    Join Date
    Mar 2006
    Location
    tasmania
    Posts
    156

    Default 18RG rebuilds and power outputs?

    Hey guys,

    Im not to far away from dropping my RG in and I dont have a dyno near me and i sort of want an idea of what sort power i can possibly make. I dont expect anyone to be able to tell me how much power i have so i thought it would be cool to have all you guys with RG's to put up what you have done to your motor and the power it makes. Its up to you whether you put kw or hp and if its at the flywheel or wheels...

    Edit: Also any tips on how to help rebuild an 18RG so us guys who havnt done one before can get the most out of our engines would be great...

    Thanks...
    Last edited by Gunna; 02-02-2007 at 10:55 AM.

  2. #2
    Long Time Reader Backyard Mechanic willwal98's Avatar
    Join Date
    Dec 2005
    Location
    Queensland
    Posts
    377

    Default Re: How powerful is your 18RG?

    I had 105rwhp with a stock rebuild of an 18r-gu with an EFI conversion. microtec mt4 (old version), extractors and some basic port work.
    Hello.

  3. #3
    Toymods Pimp Chief Engine Builder Norbie's Avatar
    Join Date
    Aug 2005
    Location
    QLD
    Posts
    3,806

    Default Re: How powerful is your 18RG?

    Rebuilt 18R-G (9.8:1 pistons) with GEU manifolds and Haltech E6X, 90rwhp thanks to a crappy hall-effect sensor giving dodgy readings. In reality it should be doing 110rwhp.

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

    Default Re: How powerful is your 18RG?

    rebuilt with 9.7:1 pistons (20thou oversize), 88253 head, EFI intake, electronic ignition, stock ECU

    80rwkW
    ...... butt scratcher?!


  5. #5
    Classic Not Plastic Domestic Engineer ace's Avatar
    Join Date
    Oct 2005
    Location
    SA
    Posts
    689

    Default Re: How powerful is your 18RG?

    Extractors, Exhaust, EFI with Link ecu, electronic ignition, Hot air intake, 98 octane....

    Just under 80rwkw
    My TA22
    Quote Originally Posted by gianttomato about new cars
    Yeah sure, it goes alright and it's got air conditioning, cup holders and automatic tampon removers, but where's the charm?

  6. #6
    I'm more dodgy than a Backyard Mechanic ra_28's Avatar
    Join Date
    Dec 2005
    Location
    WA
    Posts
    466

    Default Re: How powerful is your 18RG?

    152bhp with 9.7:1 comp 45mm webbers long duration cams "race spec" ported head with matched manifolds.
    RA28 Turbo 18RG
    RT104 - spare toy
    MS55 delux - long term project
    BF II XR8

  7. #7
    Senior ****** Carport Converter Sam_Q's Avatar
    Join Date
    Nov 2005
    Location
    VIC
    Posts
    1,798

    Default Re: How powerful is your 18RG?

    152hp at the wheels?

    have you taken it down the quarter?

  8. #8
    Junior Member Grease Monkey Gunna's Avatar
    Join Date
    Mar 2006
    Location
    tasmania
    Posts
    156

    Default Re: How powerful is your 18RG?

    Some pretty good RG's out there by the sound of it. Even if anyone dosnt have the power there engine makes you can still put up what you have done to your RG. Its interesting to know what sort of work you guys have done...

    Cheers...

  9. #9
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
    Join Date
    Nov 2005
    Location
    QLD
    Posts
    6,684

    Default Re: How powerful is your 18RG?

    Quote Originally Posted by Norbie
    Rebuilt 18R-G (9.8:1 pistons) with GEU manifolds and Haltech E6X, 90rwhp thanks to a crappy hall-effect sensor giving dodgy readings. In reality it should be doing 110rwhp.
    If that was the motor I sold you, the pistons were 9.7:1, but the head was shaved down 40 thou, and the dizzy had a reluctor sensor (22RE item). Good to see she had some go though, wish I had have known that my alternator was bung, would have kept the motor and still be driving the 23.

    Cheers, Owen
    Cheers, Owen
    1977 RA28 with 1JZ-GTE (Was 18R-GTE)
    Lancer EVO Brakes into old Celica/Corolla/Corona
    Doing the things that aren't popular... cause being popular and being good are often distinctly different.

  10. #10
    Junior Member Carport Converter TA-022's Avatar
    Join Date
    Sep 2005
    Location
    NSW
    Posts
    1,616

    Default Re: How powerful is your 18RG?



    unknown service history - in the car when i bought it 2 yrs ago now
    carbies need a rekitting and proper tune - were running on the rich side
    compression had 140-140-90-130

    so yeah not the best but i was happy considering all.

    note: dyno day 2yrs ago
    Black Betty >HERE!<

    (\__/)
    (='.'=) This is Bunny. Copy and paste bunny into your
    (")_(") signature to help him gain world domination.

  11. #11
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
    Join Date
    Nov 2005
    Location
    QLD
    Posts
    6,684

    Default Re: How powerful is your 18RG?

    Dats pretty good TA022 for a motor which is down on No. 3 something fierce. Did you identify if it was a valve, rings, piston or gasket that was the problem??
    Cheers, Owen
    1977 RA28 with 1JZ-GTE (Was 18R-GTE)
    Lancer EVO Brakes into old Celica/Corolla/Corona
    Doing the things that aren't popular... cause being popular and being good are often distinctly different.

  12. #12
    Toymods Pimp Chief Engine Builder Norbie's Avatar
    Join Date
    Aug 2005
    Location
    QLD
    Posts
    3,806

    Default Re: How powerful is your 18RG?

    Quote Originally Posted by o_man_ra23
    If that was the motor I sold you, the pistons were 9.7:1, but the head was shaved down 40 thou, and the dizzy had a reluctor sensor (22RE item). Good to see she had some go though, wish I had have known that my alternator was bung, would have kept the motor and still be driving the 23.
    Yep that was your old engine. I couldn't get the reluctor to work properly with the Haltech so I ended up using an 18R-C dizzy converted to Hall Effect. It works better but still not good. I've given up on distributors now, I'm going to mount a trigger wheel on the crank and run a waste-spark setup - I recommend anyone else running full engine management on an 18R-G do the same!

  13. #13
    Junior Member Carport Converter TA-022's Avatar
    Join Date
    Sep 2005
    Location
    NSW
    Posts
    1,616

    Default Re: How powerful is your 18RG?

    nah never id'd the issue .... only a month to go before 1ggte goes in then ill prob slowly rebuild the RG possibly into a EFI N/A weapon. loooong way from that build though LOL
    Black Betty >HERE!<

    (\__/)
    (='.'=) This is Bunny. Copy and paste bunny into your
    (")_(") signature to help him gain world domination.

  14. #14
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
    Join Date
    Nov 2005
    Location
    QLD
    Posts
    6,684

    Default Re: How powerful is your 18RG?

    Maybe try points in the meantime Norbs, they are a PITA, but they work, and are simple.

    Cheers, Owen
    Cheers, Owen
    1977 RA28 with 1JZ-GTE (Was 18R-GTE)
    Lancer EVO Brakes into old Celica/Corolla/Corona
    Doing the things that aren't popular... cause being popular and being good are often distinctly different.

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

    Default Re: How powerful is your 18RG?

    Quote Originally Posted by Norbie
    Yep that was your old engine. I couldn't get the reluctor to work properly with the Haltech so I ended up using an 18R-C dizzy converted to Hall Effect. It works better but still not good. I've given up on distributors now, I'm going to mount a trigger wheel on the crank and run a waste-spark setup - I recommend anyone else running full engine management on an 18R-G do the same!
    Seconded.
    My Megasquirt-II is giving me similar griefs, unsure of the full reason yet, but the above solution is the best option.

    My thoughts are that the signal moves in relation to crank position as RPM changes, due to chain and gear slop.
    You gotta remember that the rotational movement goes:
    1. Crank
    2. crank chain gear
    3. lower chain
    4. lower chain tensioner
    5. aux cam gear
    6. dissy drive worm gear
    7. dissy shaft worm gear
    8. dissy pickup
    That's a few places that can pick up sloppy movement. On a stock system its not so much of a drama as there is no "error filtering", but on an aftermarket system it has tolerances for allowable signals to occur - if the signal occurs outside of the tolerance the signal is disregarded as erroneous.
    ...... butt scratcher?!


Similar Threads

  1. Replies: 8
    Last Post: 24-09-2006, 08:47 AM
  2. Building an Australian RA21 (18RG + TA22)
    By ace in forum Tech and Conversions
    Replies: 12
    Last Post: 04-07-2006, 09:09 AM
  3. Computer Engine Modelling, (18rg in particular)
    By jeffro ra28 in forum Tech and Conversions
    Replies: 41
    Last Post: 08-01-2006, 10:20 PM

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
  •