Mikuni vs Weber

[KamakSun]

Hello fellow ratters,

 

I currently have a cannon manifold with two Weber 45dcoe on my rat. I also have a dual 44 mikuni setup with a short mikuni intake. Which set up should I go with? The car will be an aggressive street ride that will see the occasional track day.

 

To further complicate things I also have su's but avoiding those since they are single barrel and in need of rebuilding.

 

Thank you,

 

Kamaksun

[banzai510(hainz)]

I say the mikunis.   see if the manifold or head can be poerted if enough meat can safetly be removed.

 

 

I have the 40mm Mikuni short set up.

[DHale_510]

The installed venturis are more relevant then the Mikuni vs weber question. It is usually best on a street car to have slightly smaller venturis than intake valves. You get the widest power band this way. I have also found the Webers tune easier on smaller motors, Mikunis on larger ones, and the Mikunis have fewer expensive parts to tune, but are harder to find. Usually the Mikuni manifolds have better throttle linkage than Canons.

SUs are always easier and cheaper, generally work fine once set and not fiddled with. Webers are pretty much the opposite.

Dennis

[Ranman72]

The installed venturis are more relevant then the Mikuni vs weber question. It is usually best on a street car to have slightly smaller venturis than intake valves. You get the widest power band this way. I have also found the Webers tune easier on smaller motors, Mikunis on larger ones, and the Mikunis have fewer expensive parts to tune, but are harder to find. Usually the Mikuni manifolds have better throttle linkage than Canons.

SUs are always easier and cheaper, generally work fine once set and not fiddled with. Webers are pretty much the opposi

 

 

this all sounds correct 

[Stoffregen Motorsports]

I am a Mikuni guy. Always have been. They just look right on a Datsun. I think they are easier to tune than Webers, but maybe that's just because I am more familiar with them.

 

The Canon vs Mikuni manifold question - the short manifold fits better and is better out of the box, but I think the Canon manifold probably has better potential.

 

Linkages and isolators are important too. I like to use soft mounts behind the carbs and centerpull linkage, but it seems now days most people find that too difficult to achieve. Centerpull linkage makes tuning the carbs so much easier. Parts availability may have something to do with it, but if you know where to look, you can find all the right parts for a nicely set up pair of carbs.