2018 Yaris SE 5MT - T-Sport w/Valvematic!

[tmontague]

Originally Posted by stidnam

Not trying to be argumentative tmontague, but Toyota did match the 2zr to the HB chassis, like you mentioned. If using all of the factory mounts and driveshafts, I wouldn't expect a single clunk or growl from the drive train. I wouldn't expect that to apply to a Vios though.

Now that may not necessarily be the fix for this problem, but it'd be something I'd keep in mind if the problem persists and you've ruled everything else out Adam.

Interesting tidbit of information - the mounts and brackets used in the new 2018 GRMN Yaris are exactly the same as the 2008 South African and New Zealand ZSP90. Looks like Toyota went and just dug through the parts bin. It should also be noted that all of those vehicles use a 6 speed transmission - 2008 models used an EC67.

Anyway I digress. Adam, I've read back through your thread and I couldn't see which drive shafts you used? Assuming the Yaris ones. Not sure what the exact differences are, but it may be also worth investigating the differences in the XD shaft lengths and whether that might also be a solution - just thinking if the 2zr rh mount has shifted the motor and box towards the left...

I agree w/ you but all of us 2zr swaps hb or sedan have originally kept yaris axles. If the swap was to be done totally to factory spec in a HB then yes I would expect it to be silent. With the mix and match to keep costs down that most of us have, noises are inevitable. Plus most who have done the swap are racing their cars and have other modifications in it either transmission gears/lsd or engine mounts which leads to all kinds of fun nvh that factory spec won't leave you with.

At this point I'm keeping my fingers crossed that the fuel trims level out as that is the main issue currently. Unfortunately I'm not much help as this is out of my wheel house in regards to what it could be