Upgrading from Dual Weber 32/36s to Triple 40 DCOEs – What else do I need?

Will I need to keep manifold vacuum for the distributor with triple DCOEs?
You need vacuum for the brake booster. The Korman intake manifold has take offs for manifold vacuum at cylinder 2 and cylinder 5. I've combined them for my brake booster using a simple brass T.

I have not programmed the use of vacuum advance with the 123. I experimented with it a little bit, but didn't follow through with it.
 
Yes, knew about brake booster vacuum but wanted to know if I should keep vacuum advance in place for the distributor. Sounds like I do. Anyhow, does anyone know if the Pierce manifold comes with a vacuum port off the front manifold section, or will I need to install a fitting?
 
One of the three manifold will have a larger threaded hole. This will be for your booster vacuum. I will be threading this into that hole. My carbs have a vacuum port that I will use for my 123 distributor.
 

Attachments

  • 17898424845844048189146387988751.jpg
    17898424845844048189146387988751.jpg
    169.5 KB · Views: 70
Last edited:
Yes, knew about brake booster vacuum but wanted to know if I should keep vacuum advance in place for the distributor. Sounds like I do. Anyhow, does anyone know if the Pierce manifold comes with a vacuum port off the front manifold section, or will I need to install a fitting?
Yes , the Pierce has a threaded opening for vacuum.
IMG_2446.jpg
 
@Ohmess do one of your carbs have the vacuum port for the distro?
Yes, there are ports for each cylinder on my carbs. But as noted previously, I'm not using any vacuum advance in my setup. Probably could improve fuel economy if I did.

...and if you haven't already read everything @Stevehose has posted about carb tuning, I recommend that you do. He saved me countless hours of pain.
 
Would anyone with triples want one of these i had them printed? More economical to order more than just 1. lmk

Inside the window vinyl sticker, easily removable. approx 2in x 4in
 

Attachments

  • Triple  v2.png
    Triple v2.png
    2.8 MB · Views: 57
What's the recommendation to do with this air intake hose running form the snorkle to the exhaust manifold? I know it'll need to be removed but what are those doing about the hole after converting to triples?
 

Attachments

  • PXL_20261020_191840447.jpg
    PXL_20261020_191840447.jpg
    239.7 KB · Views: 25
What's the recommendation to do with this air intake hose running form the snorkle to the exhaust manifold? I know it'll need to be removed but what are those doing about the hole after converting to triples?
Are you referring to the vent on the valve cover? I was thinking I would connect a hose to a catch can for that
 
My car came with a cover on that exhaust manifold cover which I believe was done when the prior owner converted to the DGAVs. Alas, I sold that long ago.
 
Back
Top