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Thread: 18 rg timing chain replacement ,no marks

  1. #1
    spank that naughty.. Grease Monkey
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    Default 18 rg timing chain replacement ,no marks

    hi , doing a freshen up on the 18 rg and bought some new chains
    consulting the manual last night there are some marked links on the standard chain to line up on the timing marks
    my new chain is aftermarket and has only one shiny link
    bottom one is straight forward and looks to be a 50/50 split ( ? )
    top one seems to have a long side and a short ......
    no worries ill match it to my old chain
    sadly also only equipped with one shiny link
    for really good reasons i wont go into the motor was not pulled down at no 1 tdc
    but i did zip tie the cam gears to the top chain so can count links across the top between the cams
    any one have a spare chain they can count the distance between links on ?
    thanks
    Remember this is a recreational activity ......

    we got toys ! 83 lo lux in matte black..... amazingly 18 rg powered , one day it will run right !
    the dinosour 90 gsx r 750 with ohlins and yoshi , and the dirty little secret 125 vespa ,4 speed and kick start

  2. #2
    Junior Member Too Much Toyota
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    Default Re: 18 rg timing chain replacement ,no marks

    line crank up at 0TDC (with dizzi rotor pointing somewhere close to #1), fit chain, set cams at TDC#1, fit upper cogs/pins, done?

    Do you have the timing cover on or off?
    ------------------------------
    ST185 road barge / MZ11 forest barge / RA65 garage barge

  3. #3
    spank that naughty.. Grease Monkey
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    country Victoria
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    Default Re: 18 rg timing chain replacement ,no marks

    recon head,hone,bearings,rings ,cover off new gears etc
    new information
    bottom chain is equal no of links apart so that s easy
    top one has marks at the crank,one at 17 links and one at 27 ( counting clock wise from crank mark )
    if you get this wrong you will be bending valves in about 6 revolutions
    have some photos i can put up if any one is interested
    Remember this is a recreational activity ......

    we got toys ! 83 lo lux in matte black..... amazingly 18 rg powered , one day it will run right !
    the dinosour 90 gsx r 750 with ohlins and yoshi , and the dirty little secret 125 vespa ,4 speed and kick start

  4. #4
    Fustrated DYI mechanic Automotive Encyclopaedia Omegaman's Avatar
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    Default Re: 18 rg timing chain replacement ,no marks

    Basically, at this stage i think you should leave the chain links and look at the crank, to be at TDC and the dizzy drive shaft to be aligned. Then the cams to TDC. The after market chains usually only have the joining link as a guide.

    I recon, do crank and dizzy chains 1st. rotate, checking tensioner. if all good and after a few rotations still lign up to TDC, go to head/cams to TDC.

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