Posted By |
Discussion Topic:
Carburetor Spacer With Vacuum Port
|
|
carcrazy |
02-04-2020 @ 3:43 PM
|
|
|
Senior
Posts: 1682
Joined: Oct 2009
|
Is there a carburetor spacer made of aluminum or iron that can be used on a 1930's or 1940's Ford Flathead V-8 that will provide a steady smooth vacuum signal that can be read by a vacuum gauge? It would have to provide a signal from both barrels of the carburetor to indicate the conditions of all eight cylinders. In the past, I have attempted to take signals on a 1937 V-8 from either the front vacuum port in the intake manifold which samples cylinders #5 and #6 or the rear vacuum port which samples cylinders #7 and #8. Neither of these ports provides a proper signal for a vacuum gauge. Please let me know if you are aware of a source for such a spacer. Thank you.
|
35ford |
02-05-2020 @ 6:57 AM
|
|
|
Member
Posts: 63
Joined: Oct 2009
|
The Vacuum Plate used for the Columbia shifting might work as it has a large take off to operate the shifting control . jas
|
40 Coupe |
02-05-2020 @ 7:10 AM
|
|
|
Senior
Posts: 1685
Joined: Oct 2009
|
The original wiper port should provide smooth steady vacuum. No need for additional vacuum plate. Check your reading with another vacuum gauge. Most gauges have a very small orifice in the vacuum line yours may have fallen out or may be lodged in one of the rubber vacuum lines that comes with the gauge.
|
TomO |
02-05-2020 @ 7:11 AM
|
|
|
Senior
Posts: 7264
Joined: Oct 2009
|
You should see a steady vacuum at either the front or rear port with your vacuum gauge. Both ports sample both sides of the carburetor. If you do not see a steady needle, you have engine or carburetor problems.
Tom
|
flatheadfan |
02-13-2020 @ 8:49 AM
|
|
|
Member
Posts: 450
Joined: Oct 2009
|
I use a vacuum plate that was commonly used for a lot of accessory connections such as a heater, brake booster and yes for vacuum gauges. They frequently pot up on eBay for $10-15 bucks. Tom
|
carcrazy |
02-13-2020 @ 9:28 AM
|
|
|
Senior
Posts: 1682
Joined: Oct 2009
|
Thank you flatheadfan. I will be on the lookout for one at the next swap meet.
|
trjford8 |
02-13-2020 @ 4:32 PM
|
|
|
Senior
Posts: 4232
Joined: Oct 2009
|
Those plates are out there. I just found one at a swap meet for $5
|