pretty weaponary
stop playin and put that thang in

 

yes you are right. the advange is better top-end power, however, the trade off is poorer low-end response.

 

so can anyone tell me a guess on powergains with a stock port 12a with RB exhaust?

 

Ok, Im back from Idaho . Ill be messing with it soon!!

~T.J.

 

Hey T.J you know anything about installing fuel pumps and fuel pressure regs?

 

I spoke w/ Rob yesterday about my own weber setup, and he recommended that the fuel inlet hole on the stock 45 DCOE be drilled out to a larger size for my stock-port 12A. I've never heard of that being mentioned on this forum before... Is it really necessary?

 

Ive never heard of that either...Hmmm.

~T.J.

 

I know about it, but Ive never done it. I plan on doing it sometime soon though .

~T.J.

 

looks so nicey and shiney, ur gona have to instal it with gloves on to keep it like that..

good luck with the install.

 

A Weber 45 will perform better than a stock Nikki once the other modifications require a high airflow. However you can modify the Nikki to provide the same performance as the 45 at less cost. Going with even higher modifications requires greater airflow beyond both carbs, this is where the Weber IDA 48 or larger becomes popular.

The concept of a 4 barrel is to have primaries which provide economy at low revs, then secondaries which kick in later to give more power at the middle and top end. They can be difficult to set up initially but rarely go off tune. Some times there is a flat spot at the transition point. A two barrel as generally set up is great for top end power but is lumpy at low revs and more difficult to start in cold weather. Being a high performance carb they have a greater range of tuning options for very fine tuning.

In simple terms a 4 barrel provides a good compromise over a wide rav range, a typical two barrel provides better tuning/performance over a smaller range typically at the at the top end. This is why they are selected by people interested in topend power over a small rev range say 5000rpm plus.

 

The main thing is Weber's look cooler.

 

Update: Im putting the finishing touches on everything tomorrow morning when I wake up, so it should be by running tomorrow morning . Wish me luck!!

~T.J.

PS - Anyone have any tips for initial adjustments, tuning, setup, whatever?

 

I had a friend that had them years back and he NEVER could keep them both sync;ed the same. Hope you have better luck Congrats tho.

 

he's only got a single carb so it should be OK

 

What are these Nikki mods I keep hearing about? I was going to check into A Yawpower carb but I hear he takes forever. Anyone put together a mods list for the NIkki?

 

Ok well the operation was a success, and I think that shes gonna make it .

I got it started, and took it for a few spins, and its pretty cool sounding. I need to adjust it and get it tuned, but its pretty sweet, and feels the same as the Nikki right out of the box with the stock fuel pump pushing it, and a bad bog about 4K RPMs that I need to source out. Anyway, it should be fun . Anyone have any good tips for tuning?

~T.J.

 

good to hear it ... Its makes me feel better as I am contemplating doing the same in the near future

 

A bog at 4k might be too small of a main jet.

 

What are you running for your main jet? I am running a 160 main jet, that seems to be the best for my application....

 

Rotary-Rex, is the fuel inlet drilled out larger than stock on your Weber, as the Rotary Shack guy suggested to me?

 

I got mine from Rotary Shack, and he didnt say anything like that to me .

~T.J.

 

glad to hear TJ

Im also glad you didnt beat that poor kid up also, ahhahaha

And that you got your carb, even if you had to steal it off of somone elses porch!

I also was informed, by the great Sensei, that I need a fuel pressure regulatator. Since the Facet is pushing to hard..... I brought out my Mallory regulator, and appearently its on that you can run boost with, so im happy about that!!!!! Im thinking about grabbing a pressure gauge and hooking it up, but first I have to confirm that the purolator regulator read correctly...... I wonder if there is such thing as an in line regulator that i could temporily hook to Mar3's carb to see the exact pressure i need for my nikki(since he has dyno'ed it and got the correct pressure needed for the nikki he was running, so i figure i would be a copy cat) And then use it with my setup, will see!!!

What is a good gauge that reads properly?



Thanks, Laterz, Andrew