I have read what I could find on this conversion and am almost finished, hoping to drive the bus tonight. My manifolds only have the "breather" ports from 1 manifold to the other.
My question is:
Should I drill a port into the manifold for the brake boost vacuum?
Can I "T" off the breather line to accomplish this vacuum requirement? Will it draw enough or too much?
Thoughts?
Brake vacuum line, Type 1 in a late bay conversion
- ryan@schassen.com
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- Location: Portland, Oregon
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- asiab3
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Re: Brake vacuum line, Type 1 in a late bay conversion
Hey Ryan,
Are we discussing the "breather" between the two air cleaners, or the "balance tubes" between the two manifolds?
T-ing into the balance tube is the acceptable way of doing it these days, but I wanted to make sure we're on the same page with terminology. Make sure the balance tube and T are large enough to handle the pressure/flow requirements of the brake booster. Use the brake booster hose for size comparisons; no quarter inch crap that some volume rebuilders deem "sufficient." :/
Robbie
Are we discussing the "breather" between the two air cleaners, or the "balance tubes" between the two manifolds?
T-ing into the balance tube is the acceptable way of doing it these days, but I wanted to make sure we're on the same page with terminology. Make sure the balance tube and T are large enough to handle the pressure/flow requirements of the brake booster. Use the brake booster hose for size comparisons; no quarter inch crap that some volume rebuilders deem "sufficient." :/
Robbie
1969 bus, "Buddy."
145k miles with me.
322k miles on Earth.
145k miles with me.
322k miles on Earth.
- ryan@schassen.com
- I'm New!
- Location: Portland, Oregon
- Status: Offline
Re: Brake vacuum line, Type 1 in a late bay conversion
Correct, balance tube. The current line of the booster is 12mm, the line I ran between the manifolds is 7mm. I was going to run a 7mm off a T, then step up to 12mm on the other side of the tin. Sounds like if I have the line tight and without leaks it should perform. They don't make a 7/7/12 (or a standard) T, so I am going to have to scale it up. Thanks for the response!
Bus is running great! Just a few more things to add to it:
mount the external oil filter, cooler, and fan
Cylinder Head Temp gauge
Breather Box / Relief line in the valve covers.
Build bracket to mount late model mustache bar
Bus is running great! Just a few more things to add to it:
mount the external oil filter, cooler, and fan
Cylinder Head Temp gauge
Breather Box / Relief line in the valve covers.
Build bracket to mount late model mustache bar