So - I rebuilt a 22r engine... installed an almost new intake manifold with almost new parts and pieces... THEN I noticed that the new manifold did not have the BVSV that sits just below the thermostat housing (it actually screws into the side of the thermostat housing). Looking at my factory service manual, it appears to be part of the vacuum advance system... basically once the truck warms up to a certain temp, the BVSV allows the vacuum advance to do its thing... but while the truck is cool it doesn't allow the advance to work... At least I think that is how it is set up... What would happen if I just bypass the BVSV (since it is not there on this new manifold)? Would performance suffer? I'm just trying to avoid having to clean up my old manifold, take the new one off, and reinstall the old one... I do have to pass CA smog (which they might catch that the BVSV is not there, so I might end up swapping manifolds to please the smog police). Will there be any performance difference? By leaving the BVSV out of the equation, I assume the vacuum advance will work from the get go... Does any of this make sense? Any input would be appreciated. By the way, I'm dealing with an '84 22r, but the new manifold is off of an '87 22r. If the BVSV is absolutely needed, can I tap into one of the other BVSV's?
Thanks,
Ken
1984 Toyota 4x4 Truck, 4.88's, 32x11.50's, weber 32/36, aux gas tank, Warn 9500i, SR5 guages, tilt/altimeter, Alpine stereo with dual 12's behind the seats.
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