The Nitro-Mizer High mileage carb inserts official thread
 

Not your typical insert !

Presenting the fresh off the molding press, the Nitro-Miser carburetor inserts from Clockwork Racing Engines Inc.. These inserts utilize a reduced throttle endpoint which can dramatically increase runtime, yet at the same time they have a relatively small effect on overall power. Limiting the throttle endpoint has long been used to reduce fuel consumption and increase run-time, however, what separates this new patent pending design is the unique funnel-oval shape that still maintains adequate air supply to run strong while focusing the incoming air directly over the fuel outlet which creates a stronger signal and better overall atomization of the mixture. In Neal’s own words, “Regular small inserts typically used to reduce fuel consumption directs incoming air away from the fuel outlet and is known to cause a narrow tuning window. The patented pending football shaped inserts aligns perfectly with the end of the throttle slide, and presents less air disturbance and funnels the incoming air and focuses it right above the fuel nipple and gives a nice crisp responsive throttle and a normal tuning window”.
We have been testing these for the last couple of months and have had amazing results with a variety of engine types. We have seen runtime gains as high as 3 minutes on some engines, not to mention a stronger, more stable idle, and improved low end and midrange throttle response. The most common response has been how "crisp and linear" the throttle has felt. We will be offering these in a package with 3 different sizes as to allow the customer to tailor the throttle response, power-band, and fuel economy to each particular engine, track, and driving style. These inserts will fit OS and Novarossi sized carb inlets that are typically universally standard sizes. Pricing and details below.

http://www.clockworkracingengines.co...pkg-cre-nm1000



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As people may notice the final design is slightly different then the pre-production inserts........If anyone who has purchased to pre-production inserts would like to upgrade we will offer a special trade in .. Either return your original insets, or show us photo proof they are destroyed, and we will send you new replacements at no charge other then shipping cost......

Is the plastic different? They seem okay to me.

plastic is the same, colors are the same...... just a little smoother finish and the addition of the air horn at the top

can not wait for my Picco inserts!

You have a photo of the air horn?

it is in the photo's already.......look at the opening of the insert and see how it has a raised bullnose edge ?

I like the idea but have you ever tried using a 5.5mm carb from a .12? I would think that would be better than a normal restrictor and would be curious how it would compare to one of these 5.4mm restrictors.

I have always wanted to try it but don't run offroad enough to do it.

I have tried the Nova 5.4 insert which has the hole centered and I found it didn't work overly well..The tuning window got quite narrow and the power dropped off quite dramatically...As well the mileage really didn't improve a whole bunch.....The small centered hole moves the airstream away from the fuel outlet and reduces the signal strength..........By contrast the miser inserts almost amplifies low end power and the tune window doesn't change..... I Would say there is a substantial performance advantage with the Mizer style insert....not only more power and easier tuning, but also substantially better runtime gains


I just reread what you said here.......and LOL.......

Anyways we did try the smaller Nova carb that they rel;eased last year and did not like how it ran at all.......seemed to have a very narrow tuning window....

At Neobuggy, CRE is stated as a US company!! John should do something about it...

Hi Diamantis, yeah, we contacted them already lol, however I am in Florida until Tuesday so I guess it's kinda accurate :p

Cool stuff, just curious if a prototype with a smoother transition from the air filter to the insert was tested?

that was the reasoning behind the raised lip of the insert......

But it will still be a step in the airflow going into the carb. Other inserts like RB and IDRC have a slow curve into the carb since the rubber would snug up against the edge of the insert. I imagine it is easier to do that with aluminum than a molded piece. I guess someone could still do that with some countersink and dremel work to smooth it out some if they wanted to.

Didn't RB already have an offset port on the insert? How much difference is the football shape offset vs the round offset?

When you look at how the boot tapers in above the carb you will see we dont have that much of a step.... We do have less of a step then the stock Nova and RB inserts......

The oval RB insert is very different then the Mizer inserts...... the RB is just a centered oval.... the insert still uses full throttle end point....... We run the football shape 90 degree perpendicular to the direction RB runs theirs, as well ours is offset, the RB is centered............. Also we are seeing 2-3 minute runtime gains even with Pro drivers.... the RB insert will not match that performance..........