Alright in order to reduce my HC (Hydrocarbon) count on my smog report, I need to have a EVAP/Purge valve for my Charcoal Canister. So I wanted to install one to produce clean emissions and avoid problems later on. The only thing that is holding me back is the fact that the BEAMS coolant neck doesn't have a thread for a BVSV, yet it has two empty locations on the neck but require drilling. Now I bring up the question: Which would be better to undertake? Drilling and threading one of the holes for a BVSV to function. OR Using my AC VSV (since I don't have AC anymore ) as an EVAP/Purge valve for my Charcoal canister.
I don't think having or not having the charcoal canister does have any effect on your smog report. It came up in an other thread, and as I wrote it there, the charcoal canister is collecting evaporated fuel from your tank. So it's doing it's job mainly while the car isn't even moving I don't have the charcoal canister, and my HC count is still far better than with my old engine. I wanted to figure out how to install it in the past, but in the case of the BEAMS, it's tricky. The Celica version has an electric solenoid attached somewhere near the airbox, that's controlled by the ECU, so it's not working by vacuum. And I couldn't figure out too which line goes where, even though I have the figure from EPC.
Yea the problem is that in california, they require you to have a charcoal canister. Since I don't have a vsv to control the amount of fumes i will always get docked on high hydrocarbons (HCs) at idle. I pass everything else. Plus my Harness was mashed up with the st162 harness which lost the vsv plug in the process.
You don't need the BVSV, on JDM's the charcoal canister feeds directly to one of the small pipes on top of the T/B. There's no valving and the fumes are burnt constantly This pic of a stock motor shows the pipe going to the canister and the lack of VSV's
Actually Stig the BEAMS did come with a VSV, it was just electronic. Since my wiring harness was a mash up of the st162 and BEAMS harnesses, I lost that connection/plug and now I have to figure out how to regain it either by tapping my coolant neck with the old bvsv or use the ac vsv as a purge valve.
I don't think it's a needed item Looks to me like the VSV opens when the motor is warm to let fumes into the manifold? I still have the VSV and water pipe I took from the OZ import 2yrs ago if you need, there were 2 and the other was part of the EGR system I chucked my canister and blocked the 2 pipes, made zero difference to the motor but I suspect the canister was well past it's due by date and so are all of yours? Never heard of anyone replacing it? For emissions you'd be better off correcting your jetting and ensuring the cat is functioning properly? Luckily TEMS is emissions exempt here, so I don't know for sure but if I took her to OZ I'm pretty sure they'd throw the book at her
