- What is an Idle Spoil Port and what is it's purpose?
- What is it used in conjunction with?
- For EXTRA CREDIT (and more cigars) provide details of when, where, why, etc.?

Views: 290

Reply to This

Replies to This Discussion

With any engine service that required removing the carb, it would have run just fine with or without the shim prior to drilling the idle spoil ports, and guess they felt it was being left out enough that they should force reinstallation of the shim by adding the spoil sport.  Sounds like a brute force fix, but 54/55 years later we are still forced to install that shim if you want it to idle correctly with stock setup. 

I will also note: 
1st: it has often been incorrectly surmised and stated that this shim was simply needed because of the design of the Carter AFB. The ports were actually added to the Carter Carb as a later adaption to the Carb, during late 1962 model year production, to force the entry of the shim, and not that the shim was added to address original design of the carb.

2nd:
it has also been incorrectly stated that the shim was simply a heat shield for the carb, however, it was to prevent long term corrosion from the exhaust gases.  Heat is a factor, however, simply heating the base of the carb up is not going to make it corrode. It is the constant direct exposure of the hot exhaust gases over time that will make it corrode.   

RSS

Photos

  • Add Photos
  • View All

Forum

Modern radio antenna …

Started by Mack in 1963/64 Cadillac Specific Discussion yesterday. 0 Replies

Just replaced radios for the modern radios with Bluetooth and all the dance things and wanted to share how I went around the antenna knob… I’ve installed a regular two way GM window switch in the…Continue

BOOT

Started by John Inglesby in 1963/64 Cadillac Specific Discussion. Last reply by Marty Smith yesterday. 1 Reply

I recently purchased a new boot for my 64 convertible and was wondering how difficult it s to install. I'm not very mechanical. It looks like the chrome piece behind and at top of seats needs to be…Continue

63 Exhaust Hanger Mystery

Started by Mike Travers in 1963/64 Cadillac Specific Discussion. Last reply by Cees de Bunje on Monday. 8 Replies

I'm in the process of installing a stainless steel single exhaust from Classic Exhaust on my '63 Coupe de Ville. I'm running into a mystery regarding my middle exhaust bracket. I have the bracket…Continue

TH400 Dipstick Tube Seal

Started by Logan Robb in 1963/64 Cadillac Specific Discussion. Last reply by Logan Robb on Monday. 9 Replies

In my “rebuild” of the transmission, I ordered a dipstick tube seal. However, I’m not sure if the right one came or how to best install the seal. I am wondering if anyone has replaced this seal OR…Continue

Blog Posts

Loud air moving sound within carb with cleaner removed

Posted by Dave Fehrle on March 23, 2024 at 3:23pm 8 Comments

While checking my Carter carb with engine running, I took the air cleaner off and there was a very loud hissing sound of air. I placed a piece of paper over the carb and it didn’t move up or down, is this normal?

Vintage Air AC

Posted by Chase on March 21, 2024 at 5:55am 0 Comments

Hey everyone, has anybody done a Vintage Air AC/Heat setup in their car? I want to bypass the old vacuum setup and go with a Vintage Air Gen 2 model. Before I get started, does anyone have any experience with this? (Which model to go with, do’s and dont’s, etc.) It looks pretty involved. Any and all info/pics would be greatly appreciated. Thanks!

accumulator dryer

Posted by CHRIS CARLSON on December 6, 2023 at 10:54am 0 Comments

Who rebuilds original AC  accumulator dryers for 1964 Cadillac? I have been on Classic auto air in Tampa FL wait list for over a year ,  There is one on Old air products web site that looks very similar to the original # 21-4214A but states it fits 1962 Gm cars, The one recommended for a 1964 Cadillac is half the length 21-4215A    What  is everyone using ? I would prefer to be as original as possible. Thanks

'63 Eldorado trumpet horn + 2 standard horns restoration

Posted by Les Eastling on November 15, 2023 at 10:34am 1 Comment

My son, unbeknownst to me, had all three of the horns on our 1963 Eldorado completely restored. We had recently added the Eldorado trumpet horn to the two standard horns and the sound was not very good... we had heard good ones so we knew something was not right... but there was not much we could do to get better sound from the 3 horns. 

There is a restoration service called The Horn Works who my son…

Continue

Events

Videos

  • Add Videos
  • View All

© 2024   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service