Originally Posted by Tuxedo_Ranch
I'm only getting about 7-9 miles per gallon, so it won't take long to pay off the Weber if it will double the mileage. What do you think I'll get for mileage with the Weber??


When I put mine on and tuned it properly, I was getting 24-25 (however, I'm not running huge tires — 30.5", one size up from stock.) That was with the original Jet valve head, and of course everything else was dialed in correctly.

I've since replaced the original head with a plain 2-valve style, and I'm getting 20-21 (the Jet valves allowed the engine to run much leaner for better emissions, which also meant better fuel economy.)

Last edited by GrantCee; 03/27/19 12:28 AM.

1987 Montero SWB, 2.6L, 5spd
Weber conversion
2-valve head from Engine Machine Service
"4G54 FTW!"