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Ok a follow up on my previous post. Once we got into the nitty gritty of what to do with the extensive damage to my motor, I was looking at $8000 in part(minimum) as well as a tow truck ride to Nissan as it requires special tooling to hold the twin balance bars below the crank in situ also...

I don't thiink the secondary chain would be an issue, it is dual row, quite short and only runs the cams. It needs to come off to allow acces to the primary chain, so should/would have been looked at when the job was done. The primary chain though runs the injector pump, vaccum pump, cams etc...

Get it checked out..... longer it goes the more $ it will be.... If they get too loose, it will take out the bearing/sprocket on you vaccum pump as well as the bottom hydraulic adjuster will force the chain into the primary timing case and wear a hole in it, and snowball from there. As the...

I wish...... I have R51 2.5 auto pathy, just had major rattle in front of engine-mech pulled the timing case off to see what is going on, what a mess.... To replace the main timing chain(there are two...) needs the front diff out, sump off and about 20hrs of labour, which at $100/hr or there...