FAQ |
Members List |
Social Groups |
Calendar |
Search |
Today's Posts |
#1
|
||||
|
||||
‘59 Catalina Tri-power
Is running good! This is on a original, low mile CA car. Vacuum pod works.
Sent from my iPhone using Tapatalk |
#2
|
||||
|
||||
The '57 vacuum linkage closed too slowly- very irritating. Was it better in '59?
__________________
Anybody else on this planet campaign a M/T hemi Pontiac for eleven seasons? ... or has built a record breaking DOHC hemi four cylinder Pontiac? ... or has driven a couple laps of Nuerburgring with Tri-Power Pontiac power?(back in 1967) |
#3
|
||||
|
||||
Vacuum Linkage closing too slowly is typically caused by the mechanical Vacuum Switch on the center carb not bleeding the signal line fast enough.
I used to make my own steel vacuum tube to the vacuum pod. I would drill a calibrated hole in the steel tube that would delay the vacuum pod slightly from opening as soon but would also bleed the pod a bit quicker so people did not feel like that had no control of the throttle after an acceleration. Learned that trick from the WW-II Master Mechanic. They did make precision vacuum "tees" with a calibration bleed built into them (specifically for emissions calibration devices) in the 70s/80s. Wish I had kept 100 of the Calibration Tees of different sizes, Jack. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
#4
|
||||
|
||||
It closes OK. Not as fast as a mechanical but it doesn't open too fast for the motor either. Chevrolet used huge Vacuum pods up on the ends of their 427 Tri-power Holley carbs up to '69. I kind of like them.
|
#5
|
||||
|
||||
Quote:
Let off of the throttles and the bleed circuit helped remove vacuum quickly. By the way, I have the original Dodge 6-Pack Dyno VACUUM carbs used to set the HP number for the 440 6-pack HP rating. Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
Reply |
|
|