Is it okay to T vacuum components?
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Joined: Feb 2010
Posts: 1,585
From: Modesto CA
Is it okay to T vacuum components?
I have two manifold vacuum sources on my 455 and I need to connect three things. I removed the TCS/TVS stuff and I have the PCV going straight to the carb but I still have the transmission modulator, distributor advance and a/c reservoir that all need manifold vacuum. Would I be okay T’ing them all together or should they have their own vacuum source? If I could T them all together that would be preferred to clear up any clutter but I do I have two ports on my manifold if one of them needs a dedicated source. TIA
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Joined: Aug 2013
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From: Evansville, IN
I have two manifold vacuum sources on my 455 and I need to connect three things. I removed the TCS/TVS stuff and I have the PCV going straight to the carb but I still have the transmission modulator, distributor advance and a/c reservoir that all need manifold vacuum. Would I be okay T’ing them all together or should they have their own vacuum source? If I could T them all together that would be preferred to clear up any clutter but I do I have two ports on my manifold if one of them needs a dedicated source. TIA
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Joined: Feb 2010
Posts: 1,585
From: Modesto CA
Thanks for all the replies. I knew certain things could be connected I just wasn’t sure if anything needed a dedicated vacuum source. I have the PCV dedicated going to the base of the carb and the brake booster is also dedicated going to its own fitting on the intake. Looks like I should be okay connecting the distributor advance, transmission module and a/c reservoir together and plugging the other port. That will keep all the vacuum hoses behind the carb so it will look pretty clean.
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Joined: May 2009
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From: Northern California
Vacuum lines are also a great way to learn how to flare and bend tubing with out risking safety. Cleanly bent hardliners to the brakes, and PCV look sharp and work well, but aren’t factory.
On my 455’s the PCV is direct to the qjet’s big front port (3/8’s, I think), brake vacuum is on its own too. Distributor is on its own port.
Vacuum accessories like A/C, power trunk, power door locks are on a common line (“T’d”) with a major league Caddy vacuum reservoir stashed under the passenger side fender. What’s weird is the setup is the same for both cars, but the Starfire holds vacuum over night and my 98 doesn’t. Miles of 55 year old rubber lines is likely the cause.
Sorry for late reply, been away a while
cf
On my 455’s the PCV is direct to the qjet’s big front port (3/8’s, I think), brake vacuum is on its own too. Distributor is on its own port.
Vacuum accessories like A/C, power trunk, power door locks are on a common line (“T’d”) with a major league Caddy vacuum reservoir stashed under the passenger side fender. What’s weird is the setup is the same for both cars, but the Starfire holds vacuum over night and my 98 doesn’t. Miles of 55 year old rubber lines is likely the cause.
Sorry for late reply, been away a while
cf
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