estomax

iTrader: (2)

Hey Guys,

I am just cleaning up the vacuum / coolant lines on my VVTI 1JZ and I see a vacuum switch on the vacuum line going to the fuel pressure regulator. I have never seen that before and was wondering what the purpose of this was and can I delete it or should I leave it in there?



cheers
Marko

PS. can someone also confirm that this blue tipped switch below the intake manifold is the vacuum canister vacuum switch? It has 90910-12177 on it. I am 99% sure that one is safe to delete.
https://i.imgur.com/70ioqDf.jpg

estomax

iTrader: (2)

from searching around google i found this tidbit on RX7 forums:
i haven't seen this used on my other cars and since i don't live in Socal or Arizona i think i will remove it. no real 'hot starts' in Seattle. I can always put it back if i need it i guess.

Vrank

iTrader: (4)

I pulled all engine function related vsv's from mine, works fine. Matter of fact i do so on non vvti too. They over did it on this vvti 1j. Who the **** wants one on a bov?

estomax

iTrader: (2)

what would the one on the BOV be used for?? i didnt even notice one there yet..

my engine is going to be nice and clean once im done ripping all this stuff out. i am probably going overboard but im cutting the coolant passages off the throttle body and IACV too haha.

Vrank

iTrader: (4)

Then you need to pull the coolant passage pipe and weld it, and also yank the one out of the head that goes to the tb. I like to tap the head with 1/8npt plugs. Makes injector swapping a cinch.

estomax

iTrader: (2)

i ended up simply putting some radiator hose caps onto the nipples on the coolant pipe and cylinder head. I don't wanna get that deep into the motor at this point Just trying to clean up all the over engineering trinkets that are on the engine and a mild climate like where i am doesn't require. When it's time to upgrade the turbo i might go further..

cheers
Marko