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Briggs Flathead / Full 46ci pressure lube oppy build thread- now with billet goodies
« on: January 05, 2022, 07:20:26 am »
Look, I know oppys are now dinosaurs for you racers, but for us offroad tractor guys its a cheap, torquey option that works very well for what we do.
Been acquiring parts and will be starting a build soon. Complete 46CI pressure lube vertical engine, a horizontal cam cover, pump, sump, etc.. and recently scored an ARC wheel, rods, AVS pistons, and Precision 212alt cam. Yes it will be flipped horizontal. Intake is an early 2 piece, massaged, 1" tall adapter and a 27hp Kohler command 'pumper' carb on top, and 2:1 header, all are currently on the stock internal 18hp powering it right now. They both work very well- the carb made a day and night difference in power.
Since im much more concerned with low/midrange grunt than a top end screamer, how do you feel about this cam versus the stock 46ci? I have the ability to knock some base circle off the stocker, as well as all the equipment necessary to play with porting, decking/milling, valves, seats and angles, etc...
How about trading a bit of airflow for a boost in compression, a big oppy no no....
Come on, most of these things arent even raced anymore, you guys can give me some direction without giving away secrets cant ya? Ha.
Been acquiring parts and will be starting a build soon. Complete 46CI pressure lube vertical engine, a horizontal cam cover, pump, sump, etc.. and recently scored an ARC wheel, rods, AVS pistons, and Precision 212alt cam. Yes it will be flipped horizontal. Intake is an early 2 piece, massaged, 1" tall adapter and a 27hp Kohler command 'pumper' carb on top, and 2:1 header, all are currently on the stock internal 18hp powering it right now. They both work very well- the carb made a day and night difference in power.
Since im much more concerned with low/midrange grunt than a top end screamer, how do you feel about this cam versus the stock 46ci? I have the ability to knock some base circle off the stocker, as well as all the equipment necessary to play with porting, decking/milling, valves, seats and angles, etc...
How about trading a bit of airflow for a boost in compression, a big oppy no no....
Come on, most of these things arent even raced anymore, you guys can give me some direction without giving away secrets cant ya? Ha.