Lexus GS timing belt tensioner

[tinmanSC]

I'm currently in the middle of my 90K service for my 2000 Lexus GS300 with the Toyota 2JZ-GE engine. I have the timing belt off and I was going through the "inspection" potion of the service. The Lexus service manual says that the time belt tensioner should have a protrusion sticking out of it (and it does) that measures 8.0 - 8.8mm. Any more or less than than and you should replace the tensioner. Mine measures 10.1-10.5mm (or so. Getting an accurate reading within 0.4mm is kinda hard!) I used an accurate ruler, but not a caliper or micrometer. Anyone have experience with this?

 

[EricF]

Honestly.. I would simply replace the hydraulic tensioner anyway because you're already into the timing belt job, a few extra dollars for a tensioner is simply safe insurance.
Let's say the tensioner's good now... what happens at 40k later when it needs to be replaced.. you get to the job all over again.

It's cheaper to replace everything and not worry about it..

Also... use toyota's tensioners.. I'm OK with an aftermarket belt, like Gates or Goodyear, but timing tensioners.. I go with OE or as a substitute any that are made in japan.
Believe me.. it's hard for me to say it too. I'm a huge advocate for the Aftermarket.