I was wondering if anyone has a PDF file for an R2 Carter AFB. I have been told that I could use my existing Competition Series AFB and convert to an R2 Carburetor by re-jeting and adding the o-ring to the accelerator pump. I would like to compare the PDF files of the two carburetors if anyone has them.
Here is a picture of my existing AFB
OT (on topic for a change)
Here is a web site i neglected to add. I have a feel>I was wondering if anyone has a PDF file for an R2 Carter AFB. I have been
the 3506S Carter (R-1) has a rating of 637 CFM @ 2" mercury.
Carter Carbs Specs for R - Engines R1 - Carter AFB 1 7/16" primaries, 1-1 1/16" secondries model 3506s flow 625 CFM (+-10) Replacement = Carter CRT-9635 or Edelbrock 1406 Jets: .089" (120-159) primaries; .058" & .069 (16-99) metering rods. Secondary jets were .077" (120-177)
R2 - Carter AFB 1-7/16" primaries, 1-11/16" secondries Calibrated and sealed Stude# 1561641 model AFB-3606 flow 625 CFM (+-10) Replacement Carter CRT-9635 or Edelbrock 1406 ( Use Procharger bonnet to adapt supercharger hose)
R3 - Carter AFB 1-7/16" primaries, 1-11/16" secondries Competition model Stude# 1558637 Standard model 1563050 model AFB-3808S flow 625 CFM (+-10) Primary jet # 120-159 Size (.089) Secondary Jet # 120-166 size (.0935) Primary metering rod # 16-103 size (.068 X .060) float setting 13/32"
R4 - Carter AFB 1-9/16" primaries, 1-11/16" secondries Front Carb Standard model Stude# 1563051 AFB-3810S flow 675 CFM (+-10) Primary jet # 120-162 Size (0-1015) Secondary Jet # 120-176 size (.0635) Primary metering rod # 16-124 size (.069 X .0635) float setting 5/16"
Rear Carb Standard model Stude# 1563051 AFB-3811S flow 675 CFM (+-10) Primary jet # 120-162 Size (0-1015) Secondary Jet # 120-122 size (.070) Primary metering rod # 16-204 size (.073 X .063) float setting 5/16"
Front, without choke Stude# 1563051 Rear, with choke 1563052"
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"Studebaker-r2-4-me" wrote..
When I was searching for the parts to build my R2, I found the carb to be the toughest nut to crack. I finally found an original R2 carb, but it gave me fits with the amount of rebuilding it needed. It finally did make it but only after about $900. Dave Thibeault makes a 'clone' that is definitely the most economical way to go. I talked at length with Ernie Rizzolo who used an Edelbrock base with the R2 AFB top, but that project seemed like it was still under development. The main problem here is that the carburetor is not in a box. If it is done R3 style with the carb in the box, then you don't need all the special sealed carb stuff. How original do you want your engine compartment to appear?
Tim K.
CarKB.comhttp://www.carkb.com/Uwe/Forums.aspx/studebaker/200701/1
After a full summer and fall of driving and getting as high as 22MPH(700R4), smooth acceleration up to 5200 RPM, and no leaks at a full 5lbs. of boost I will officially declare the hybrid Edelbrock/AFB a completed project. As Tim stated, I was always reserved in my claims of success because as more miles piled up little glitches in performance would appear. It is quite simple.
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