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hey guys im looking for someone to change my timing belt on my rb25det as i could do it myself but im not confident enough. its in a vl commodore so their is alot more room than a skyline.

reason i dont want a workshop to change it is because they all charge an absolute fortune

how much can you do yourself? i could lend a hand but am pretty busy at the moment so not sure if i could do the entire job. if you can pull all the ancillary belts off, covers off, radiator out etc then i can probably help you with the rest.

as far as i no if u use a scraper to accuratly mark the cas position before taking it off, put it at TDC then take off belts, line new belt marks up with dots on the cam gears and crank gear, turn over twice by hand, make sure is all lines back up, then re install everything else, there isnt much need for a timing light,

in saying that, a super cheap auto timing light is very cheap, use it and take it back the next day, get refund.

as far as i no if u use a scraper to accuratly mark the cas position before taking it off, put it at TDC then take off belts, line new belt marks up with dots on the cam gears and crank gear, turn over twice by hand, make sure is all lines back up, then re install everything else, there isnt much need for a timing light,

in saying that, a super cheap auto timing light is very cheap, use it and take it back the next day, get refund.

this. i usually mark the cas and timing cover with a small flathead screwdriver. its not perfect but more than good enough.

supershit are handy for some things haha

best way to use a timing light on a twin cam RB is to unbolt no1 coilpack from the cradle and put a plug lead (if you have one laying around) between it and the plug then hook the timing light onto that. with a stock ecu at warm idle it should give you 15 degrees btdc, which is the middle mark of the 7 on the balancer.

only way to be sure is to hook it up to a laptop and look at a live ecu timing readout whilst setting the ca

edit: or you could use a timing light before you do the belt and set it to the same after doing it

Edited by JonnoHR31

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