2ZR Turbo Yaris

[tmontague]

Originally Posted by 06YarisRS

Frame Painting Touchups

I've been doing this all throughout the project. I figured while I had all the plastic shrouds off, I'd touch up the frame here and there. These had the occasional spots of surface rust, mainly where the plastic shrouds abrade the paint. I degreased, sanded, degreased and gave several coats of ceramic VHT paint, drying the layers with my heat gun. This stuff is really durable. Once it's cured in a few days, I'll blast it all with Fluid Film and spray the frame insides again with Rust Check red.

looks clean.

That breather hose that normally see's vacuum and now is vented to atmosphere do you foresee any issues with that? I've read varying things online about removing the vacuum from breather hoses potentially causing problems in a system designed for vacuum.

That said I would think you should be perfectly fine seeing as that hose is upstream of the TB and therefore doesn't actually see much vacuum at all. It would see minimal vacuum at idle and during WOT there is little vacuum anyways

[06YarisRS]

Originally Posted by tmontague

looks clean.

That breather hose that normally see's vacuum and now is vented to atmosphere do you foresee any issues with that? I've read varying things online about removing the vacuum from breather hoses potentially causing problems in a system designed for vacuum.

That said I would think you should be perfectly fine seeing as that hose is upstream of the TB and therefore doesn't actually see much vacuum at all. It would see minimal vacuum at idle and during WOT there is little vacuum anyways

I wondered about the vacuum too, but am following the advice of the turbokits guys. Since the charge pipe that attaches to the throttlebody doesn't have an inlet, there's no place to reintroduce the unburned gasses. I thought about installing a second catch can and plumbing it back into the pipe just before the throttlebody (like the OEM setup), but then I'd run into problems when boost is present. It would probably require a check valve to keep boost from going back into the engine via the valve cover. I know what vacuum leaks can do and I wouldn't be very happy if my idles is erratic, or high due to a vacuum leak. I hope it works as it's supposed to and the other guy I've been talking to at toyotanation has the same setup and apparently hasn't experienced any issues.

The other thing I had wondered about is the brake booster under boost. I guess there is a check valve in that system that will prevent boost going back to the brake booster.