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Thread: For the love of a tractor engine: The life and times of the 18R-G

  1. #1561
    Junior Member Carport Converter RAd28's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Quote Originally Posted by o_man_ra23
    If there is a heater hose directly from the pump to the back of the head, then it is bypassing...
    and if i drove around with my heater always on (IN QLD?!) then it might be worth mentioning... but since my heater would live "OFF" anyway, bypassing it doesn't make a difference...
    the tune has nothing to do with the excessive run on in this case... just to recap, i changed from a long manifold, to a short manifold, and i now have run on.. i didn't change the tune, i didn't re-route heater hoses, the only change to the cooling system is the deletion of the 2 hoses (1/4" approx) from the ports under the inlet manifold.

    Roadkill - yes, the "run on" is acctually running in reverse sometimes, when i use the term "run on" i'm refering to the engine cranking with out ignition, regardless of which direction it's cranking... perhaps i should have been more clear?


    perhaps again, i should have been clearer... i'm not looking for a cause of the "run on" (or "run back") i'm looking for a cure... timing and tune haven't been touched since it ran well. i'm looking for simple ways to increase the cooling of the head, ie re-routing lines. has anyone got suggestions for alternatives to modifying the short manifold to have water outlets? or drilling and tapping the head?
    '77 RA28LT #2 ← 2.2L 18RG...

  2. #1562
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    RAd... as I said, don't bypass, block off. With the heater off, all water goes through the radiator. With the heater on, some water runs through the heater core. If you put a hose in which bypasses both the core and the tap, then not all water flow goes through the radiator, which then reduces the cooling efficiency. And with a thermostat in the way, you would be surprised how much easier it is for the pump to just circulate the water around the head. So block off the outlets that normally go to the heater, and see what that does.
    Cheers, Owen
    1977 RA28 with 18R-GTE
    Lancer EVO Brakes into old Celica/Corolla/Corona
    2013 86 GTS Aero. 1976 RA23 - 3S-GE Beams build to get raced in IPRA...
    1977 RA28 with bogan spec Ecotec V6 for dirt circuit racing

  3. #1563
    Junior Member Carport Converter RAd28's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    will give it a shot, let you know the outcome...
    '77 RA28LT #2 ← 2.2L 18RG...

  4. #1564
    Junior Member Grease Monkey BlueMeanie's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Hi, Does anyone know the dimensions of the 18R flywheel?
    I picked one up from the wreckers for my manual conversion and it has a confidence inspiring "18R?" written on it.
    Cheers, Jason.

  5. #1565
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    The ring gear is the same diameter as the one on your auto flex plate, and the bolt holes all match up. If you had asked yesterday I could have measured while I had my box out.
    Cheers, Owen
    1977 RA28 with 18R-GTE
    Lancer EVO Brakes into old Celica/Corolla/Corona
    2013 86 GTS Aero. 1976 RA23 - 3S-GE Beams build to get raced in IPRA...
    1977 RA28 with bogan spec Ecotec V6 for dirt circuit racing

  6. #1566
    As dodgy as a Backyard Mechanic GT1978's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Quote Originally Posted by o_man_ra23
    The ring gear is the same diameter as the one on your auto flex plate, and the bolt holes all match up. If you had asked yesterday I could have measured while I had my box out.

    "Ring gear", "I could have measured while I had my box out". Lets try and keep it G rated forum

    Glen
    RA28 (18RG)Members Ride
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  7. #1567
    I don't want to be a Domestic Engineer bnicho's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Quote Originally Posted by BlueMeanie
    Hi, Does anyone know the dimensions of the 18R flywheel?
    I picked one up from the wreckers for my manual conversion and it has a confidence inspiring "18R?" written on it.
    Cheers, Jason.
    Hi,

    I have a 16R sitting on the floor, and the flywheel is probably the same as an 18R, as it uses the same gearbox, clutch, starter etc. I can measure tomorrow if it helps?

    Cheers,
    Brett Nicholson (bnicho) - Melbourne, Victoria
    85 USDM MR2 AW11 4AGE
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  8. #1568
    Junior Member Grease Monkey BlueMeanie's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Owen, I haven't dropped the auto yet but I will tomorrow.
    If anyone can tell just by looking at it here's a pic.


    Glen, here's a photo of the filthy box I picked up in my travels SFW
    http://i222.photobucket.com/albums/d...2/100_1628.jpg

    Brett, thanks for the offer but I "should" be right.

    Cheers, Jason.

  9. #1569
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Looks the right shape. That gearbox is hardly what I would call dirty... you can still see parts of the alloy!!

    Don't forget that 21R and 22R flywheels are identical to 18R items too.
    Cheers, Owen
    1977 RA28 with 18R-GTE
    Lancer EVO Brakes into old Celica/Corolla/Corona
    2013 86 GTS Aero. 1976 RA23 - 3S-GE Beams build to get raced in IPRA...
    1977 RA28 with bogan spec Ecotec V6 for dirt circuit racing

  10. #1570
    Junior Member Grease Monkey BlueMeanie's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    So much for thinking I had all the info. Wish I'd known that before I pulled the gearbox from a 22R and then went searching for an 18R flywheel
    Cheers, Jason.

  11. #1571
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Well, you are in Tassy... we can't expect you to have that much knowledge

    Don't forget that the gearbox mount is further back on the W55 than it was on the W50. If your car has 3 pairs of nuts on the body for the gearbox xmember, you are set. If it has only 2 pairs (like the RA23 and RA28) then you need to think carefully how you will be mounting the box. I should have photos before long in my RA28 thread (linked in my sig) showing how I am going to do it tonight.
    Cheers, Owen
    1977 RA28 with 18R-GTE
    Lancer EVO Brakes into old Celica/Corolla/Corona
    2013 86 GTS Aero. 1976 RA23 - 3S-GE Beams build to get raced in IPRA...
    1977 RA28 with bogan spec Ecotec V6 for dirt circuit racing

  12. #1572
    Junior Member Grease Monkey BlueMeanie's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    Something I do know is the RT133 xmember will fit
    [edit] for anyone searching... it doesn't [/edit]
    but I'll probably be doing the same as you.
    Cheers, Jason.
    Last edited by BlueMeanie; 09-06-2008 at 04:32 PM. Reason: bad info

  13. #1573
    As dodgy as a Backyard Mechanic GT1978's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    The 22R flywheel may have a wider surface area for the clutch. My car with the 18RG had a 20R or 22R clutch installed by the previous owner and when I pulled the clutch out I noticed the disc surface wasn't worn evenly across the face. It either had a raised outer edge or inner edge. may have been upto 10mm wide section. Can't remember off the top of my head.

    Doesn't the 22R have thicker flywheel to crank shaft bolts also?

    Glen
    RA28 (18RG)Members Ride
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  14. #1574
    My Wife says I have Too Much Toyota o_man_ra23's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    I have put a 22R clutch on an 18R flywheel before, no issues. When I had my 18R flywheel machined recently, it was noted there was no raised surface for the mating face.

    Bolts were the same for 18R and 22R
    Cheers, Owen
    1977 RA28 with 18R-GTE
    Lancer EVO Brakes into old Celica/Corolla/Corona
    2013 86 GTS Aero. 1976 RA23 - 3S-GE Beams build to get raced in IPRA...
    1977 RA28 with bogan spec Ecotec V6 for dirt circuit racing

  15. #1575
    Junior Member Grease Monkey MnToyGuy's Avatar
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    Default Re: For the love of a tractor engine: The life and times of the 18R-G

    The 18RG and RC cranks take a 10 mm bolt for the flywheel though while the 20/22R take an 11 mm bolt, so keep that in mind.

    The shop prepping my engine for turbo is opening the flywheel holes and retapping the crank for the 11 mm ARP bolts (10 mm are not available)

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