Replacement Vacuum Advance
Thread Starter
|
Freshman User
Joined: Feb 2013
Posts: 27
Likes: 0
From: Aliso Viejo
Replacement Vacuum Advance
I'm hoping somebody can help me. I am looking for a replacement vacuum advance for the Autolite C8TF-12127-D distributor. Can anyone point me the right direction?
Thank you in advance.
Alessandro
Thank you in advance.
Alessandro
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
C8TF12127D, advance code #329, part number D2PZ12370A.
Haven Ford
(620) 465-2252
xNos Parts Source *Fo
913.220.5746
xDennis Carpenter Ford
800-476-9653.
Part Number D2PZ12370A
Seller:NOS Parts Ltd.
Description DIAPHRAGM ASSY.- DISTRIBUTOR VACUUM CONTROL
Phone(972) 937-2201
Haven Ford
(620) 465-2252
xNos Parts Source *Fo
913.220.5746
xDennis Carpenter Ford
800-476-9653.
Part Number D2PZ12370A
Seller:NOS Parts Ltd.
Description DIAPHRAGM ASSY.- DISTRIBUTOR VACUUM CONTROL
Phone(972) 937-2201
Post Fiend
Joined: Jun 2003
Posts: 8,209
Likes: 12
From: Black Hills of SD
The correct one should be pretty close on adjustment but I always check the amount of advance with a timing light and handheld vacuum pump. I have the distributor specs in old Motors manuals. Sometimes they need a little tweaking and you can adjust the advance through the hole where the hose goes on. I think it takes either a 1/8" or 7/64" allen wrench IIRC.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
The correct one should be pretty close on adjustment but I always check the amount of advance with a timing light and handheld vacuum pump. I have the distributor specs in old Motors manuals. Sometimes they need a little tweaking and you can adjust the advance through the hole where the hose goes on. I think it takes either a 1/8" or 7/64" allen wrench IIRC.
Cargo Master
Joined: Mar 2002
Posts: 3,132
Likes: 218
From: W (BY GOD) V
The correct one should be pretty close on adjustment but I always check the amount of advance with a timing light and handheld vacuum pump. I have the distributor specs in old Motors manuals. Sometimes they need a little tweaking and you can adjust the advance through the hole where the hose goes on. I think it takes either a 1/8" or 7/64" allen wrench IIRC.
Actually, I'm glad you brought this up Willow. Our oxygenated gas now-a-days is different than back in the days when Bumps were new. OP should experiment with adjusting the new advance for his particular engine and gasoline. I'm pretty sure you are correct with the 7/64". I'm not sure but I think clockwise gives more advance.
The third character P in the PN Prefix identifies as MOTORCRAFT and is issued to cover more applications than the original service replacement part and an instruction sheet is enclosed as how to go about proper calibration with the original Dist I.D. No.
You will notice the same thing with period service replacement carburetors, distributors, EGR valves, etc. It lessened inventory and cost.
Trending Topics
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
Do MOTORCRAFT replacement vacuum cans from '68 adjust with an allen wrench? The earlier units had shims to remove or replace. The aftermarket types often take a 3/32" (2.5mm) allen, pretty handy.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
There used to be a gazillion Ford part numbers. They were factory adjusted per application. Ford used different colored small paint splotches on them for them to identify which ones they were.
The ones with a fitting on the front of them used shims.
Hotshot
Joined: Mar 2013
Posts: 14,255
Likes: 199
From: Phoenix, Az.
Yepper. I am assuming that's how Ford gave them their initial adjustment. I found out about it in 1977. I had bought a brand new Salesman's Demo 77 Mustang Mach 1. Had a 2.8L V6 and a 4 speed. Wasn't too bad since it didn't have quite as much emissions ka ka on it compared to V8's. But I, of course, wanted more. But keep the warranty. One of the mechanics at Whitman Ford I worked at told me about this allen wrench adjustment. I did it and it did help a bit.
Post Fiend
Joined: Jun 2003
Posts: 8,209
Likes: 12
From: Black Hills of SD
Actually, I'm glad you brought this up Willow. Our oxygenated gas now-a-days is different than back in the days when Bumps were new. OP should experiment with adjusting the new advance for his particular engine and gasoline. I'm pretty sure you are correct with the 7/64". I'm not sure but I think clockwise gives more advance.
Thread
Thread Starter
Forum
Replies
Last Post
Rusty_Old_F250
1973 - 1979 F-100 & Larger F-Series Trucks
3
Sep 26, 2015 11:28 PM
Ellensburg 64 F350
1961 - 1966 F-100 & Larger F-Series Trucks
3
May 14, 2015 03:55 PM
68murc
Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)
8
Mar 11, 2015 12:18 PM
abyars111
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
1
Oct 2, 2014 10:02 PM
M6EV139445
Y-Block V8 (239, 272, 292, 312, 317, 341, 368)
2
Dec 4, 2006 04:52 PM