Stanadyne Roosa Master Fuel Pumps

Willy Bob · Oct 8, 2014

I know these pumps were used by several different manufacturers. What i'm looking for is a breakdown of the letters in the model number and what they mean. The "Search" function didn't help, maybe I was keying in the wrong thing.
Any help greatly appreciated.
Two codes I'm mainly interested in are:
DBGVCC 429-8AJ
DBVCC 429-19AL
Thanks for any and all help.
Willy Bob

Dieseltech · Oct 8, 2014

DBGVCC429-8AJ, DBG means two plunger head, DCG would mean four plunger head. CC means counter clockwise rotation drive, C would be clockwise rotation. 429 shows it's a four cylinder head with .290 inch plunger size. The 8 applies to updates, AJ means it has speed advance.

JDemaris · Oct 9, 2014

And the "DB"stands for "die-cast housing" and
features of the previous "B" and "D" pumps
incorporated together. The total spec # also gives
you the initial timing specs and roller-to-roller
max-fuel setting in inches.

One of the first "common rail diesel" setups
invented by Alden Thomas in Ohio in 1943 for
Timken Roller Bearings. Later improved by Vernon
Roosa in 1954 and thus the name "Roosamaster."

Stanadyne Roosa Master Fuel Pumps

Willy Bob

New User

Dieseltech

Well-known Member

JDemaris

Well-known Member

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