Looking for advice on jetting for DCOE’s

[mark99]

I am looking for advice on jetting for the triple 45 DCOEs I am putting on my car
These carbs are from a Bavaria that a friend drove for many years
All cleaned up now
They currently have 36 chokes

My car:

Mild Schrick cam
9.5 pistons
Stroked to ~ 3.2
Later head with larger valves
Repo Alpina plenum

I live at sea level

Thanks!

 

[Stevehose]

What idle jets, emulsion tubes, main jets, air correctors, accel pump jets, and pump bleed jets are in them now?

 

[mark99]

Hi Steve,
We are reading you triple Weber write up
BTW, the Bavaria lived at about 7000 feet above sea level

200 air correctors
FL emulsion tubes
120 main
45 F9 idle jets
? pump bleed jets
45 accel pump jets
45 aux venturi

Where / what is pump bleed jets

 

[Stevehose]

Each carb has one pump bleed jet, located at the bototm of the fuel well. I believe it's #43. Do you have an AFR gauge installed? This will help tremendously. For DCOE 45's and 36mm chokes your jetting seems small, as if they were jetting down from a larger carb than typically fits the engine. Have you driven it yet with the existing jettings?

 

[mark99]

No gauge as yet
Have not driven it yet, engine just getting assembled, then installed into the car
These carbs with those jets were on a Bavaria, 3L, that lived at about 7000 feet, and the guy that had it really liked it, drove it for years until it rusted away

 

[Stevehose]

Ok that explains the leaner jets. My guess is you'll start with something more like 55F9, 135 main, 180 air correctors. Or keep those in and buy a set of drill bits from Pierce Manifolds and drill them out as you read the AFR gauge

 

[mark99]

thanks!