This thing sounds to good to be true!! From a review article in the "Dune Zone" on this web site: "It features a unique patented Dual-Venting System, which is designed to MINIMIZE THE EFFECTS OF ALTITUDE CHANGES. This eliminates the constant tuning that other brands require", and "You need to make a simple adjustment with the needle adjuster at the top of the carb. NO CHANGING JETS IN THIS CARB, ALL ADJUSTMENTS ARE MADE BY EITHER ADJUSTING OR CHANGING THE NEEDLE."

My question for any Edelbrock users: is it true?? How does it work? Here in So. Calif., there are great variations in altitude. One day you can be at Glamis (sea level-maybe even below) and the next at 10,000' in the mountains. I just have to jet for sea level and live with poor performance at altitude, otherwise I would be rejeting constantly. If this thing is for real, maybe it is the best solution other than fuel injection, which isn't yet available except in the Cannondale.

 

The Edelbrock design is one that they purchased from the original designer, who is the same guy who makes the Lectron carb.

Basically the Quicksilver is a warmed-over Lectron.

This design was pushed by Edelbrock for years to the dirt bike masses, in fact, they would send a free one to any performance shop that asked, just to get them tested. Every company that did correct testing on the carb found they didn't work as well as regular carbs that cost much less $$. In fact, most of the time they didn't work as well as a stock carburetor.

The carb isn't that high tech. The description of it is.

Edelbrock is now marketing this design to ATV'ers. It should do better, since there's more hype and less knowledge in this part of the market (sorry guys, but it's true, just look at the "shootouts" in any of the magazines. Do they ever truly slam any product?).

If you want to spend that much money on a carburetor, use it to buy the FCR. This is new technology, it does work, and it's worth the price.

Of course, it depends on what other mods are done to your 400EX. The stock carburetor works very well with a stock or mildly modified engine. If you're running big bore, cam, etc, then the FCR would mean crisper throttle response and more top end.

The FCR will also deal well with altitude changes because of the pumper design.

 

id rather pay that kinda cash for the psi big air carbs they are much nicer and more high tech. edelbrock is just selling old technoligy

 

the carb is going to give you a 3-4 hps increase atleast it did on my warrior

 

I have to disagree with most of the posts here, the Edlebrock carb is by far the easiest carb to tune, I am sure there are better ones out there, but if you want reliability a decent boost in HP and a minimum of tuning issues, go with the Edelbrock. I put one on a 400EX along with a Yosh exhaust and I can keep up with some YFZs. To me this carb is the best mod I have done. If you really are interested and want the skinny call Edelbrocks tech line or send them an e-mail for details.

 

I liked my edelbrock that I had before well I still have it but since I went bigger in my motor I had to get the fcr's I have a pick of my edelbrock in my bio.[img]i/expressions/face-icon-small-smile.gif[/img]

 

Where did you dig this post up? (I use to be YZ Guy, but everybody thought that meant I was a Yamaha fan....not.)

I got the Edelbrock, and top end was furiously fast! But, it had a bog off the bottom that I just could not tune out. The tech guys at Edelbrock gave me every suggestion they could, but nothing helped. (Edelbrock is close by, and they were kind enough to install and tune it for me, so you can't blame the installation!)

If it had been on a bike for the open desert, it might not have mattered. But, I use the 400EX for trail riding and freestyle jumping. The bike bogged on a takeoff ramp, and I came up short on a BIG double. Pulled the thing off the next day and never looked back!

 

wow thats wierd i use my warrior for trail riding and it works perfect for me

 

Hey reconranger i have a edlebrock on my 426EX and it is kick as$ and has no bogging any where mabey u should learn how to tune it.

-Eric

 

EX Rider, can you even read??? Edelbrock is like 20 minutes away. I took it over there, and even THEY couldn't tune it. Get the picture?

The carb only has ONE circuit (instead of 4), so there isn't much opportunity for fine tuning throughout the throttle range. All you can do is change the needle and needle height.