Crossflow venturi size.....Effects?

rabidfish

Senior Chief Petty Officer
Joined
Oct 3, 2000
Messages
788
Re: Crossflow venturi size.....Effects?

The truth of the matter is:<br /><br />The larger venturi will increase low end/midrange power. This will take a fair amount of tuning.(jet work)but it is possible. The older "OPC" racers have been doing this for years. It typically doesn't help much at WOT due to porting issues. ( I have personnaly run the old 1" venturi V-4 carbs on a 50hp. It was alot of work, but we have several national championships )<br /><br />If your carb is truly worn out, replace it with the proper carb, jetted properly. There is no amount of performance gain, that is worth the hassle of a poor running engine. Especially while fishing!
 

walleyehed

Admiral
Joined
Jun 29, 2003
Messages
6,767
Re: Crossflow venturi size.....Effects?

By Rabidfish;<br />
The larger venturi will increase low end/midrange power.
Actually, this is the oposite of true...the smaller venturi has the low and mid-range power, the LARGE venturi has it on top-end...
 
Top