I have a 5speed but most of the driven comes from city. I would say I only drive maybe 40miles on the highway. So I'm hardly in 5th.

 

14.7 MPG.....that's it folks!!! I was hoping for more. I still feel the carb is running too rich.

 

let me know if your selling your racing seat
i just bought a 80 w/ a camden supercharger

 

You should be able to get up around 19-20mpg, with a free-flowing exhaust & otherwise stock engine, unless it's been ported or re-jetted.

Might be time to get your carburetor rebuilding merit badge.

Too rich would explain your 'fumes are killing me' issue, too.

 

I'm getting about 15 mpg, mostly city, with a rich rich Holley.

 

Well now that i am considering racing SCCA CSP class.....forget about the camden!! I am considering the Weber 45 DCOE kit as a SCCA legal upgrade. I talked with Robert at Rotary Shack and he really recommends the 45 kit. Says it will give 25HP gain over a stock Nikki on a stock engine??? Is this true?? This seems almost TOO good to be true to get a "20%" gain with my Racing Beat Exhaust and a 25HP gain with a carb/manifold change.

Also I read earlier in this post where a guy was really recommending the Dellorto... Any ideas on choosing between a Weber 45 DCOE vs. Dellorto??

 

I have a Dell, but a Weber DCOE would be just as good. Especially since the weber will be easier to maintain (get parts for it). The Dell is an improvement over the Weber, its easier to adjust and change jets (you can change jest while the car is running) and it has a choke that can be controlled via the existing choke linkage. I don't think the DCOEs have a choke but in Houston thats probably not an issue.

The nice part about both of these sidedraqft carbs is that if you use a wrap around intake with them then they perform reasonably well across a broader rpm range that the Weber IDF downdraft carbys.

Oh and the preformance increase you get with a well desgned header/exhaust combined with one of these carbs tuned right on a stock port 12a should put you in the 140-150 bhp range. So the claims are not for off. This is why a lot of folks drop the rats nest and move to a different carb setup. I have seen tuned Nikkis (aka Sterling and others) that can do the same and actually perform pretty well.

Given your running in an SCCA class setup, keeping the stock carb but modifiing it may yeild a desirable class change but you'd have to research that one. I have no clue on SCCA rules anymore.

 

Gonna keep the racing seat. Probably will need it considering i am going to CSP in SCCA.

 

Sounds good!! Being that the sidedraft has a longer runner, that should help with the torque down low. Also I still wonder how much more performance will you get out of the 45 DCOE vs. a modified (Sterling) nikki?? I can run the weber and manifold in this class, so that is not the issue.

Has anyone gone from the modified nikki to a weber or vice versa, and what was the difference. I really need a broad torque curve with autocrossing.

 

The modified Nikki might be better for autox. Just a guess.