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Author Topic:   Carburator and weight problems! Help!
Dirt Roller

Total posts: 23
posted December 07, 2001 06:32 PM
I'm new to the sport.In our class we are only allowed 2bl GM carbs.Would like to enlarge the jets.Currently has 50's in it now. What is recommended to help with the extra HP. Also need to add weight whats the best area to put it?I've been told not to put behind rear axle.Any advice ?

Dirt Full Roller

Total posts: 46
posted December 07, 2001 11:24 PM
over the rear axle,or were the rear drivers side seat used to be is a good spot.take a few washers tie it to a foot of string,swing it around,now take the string and make it a couple of inches long,swing it around.feel the differance?the futher behind the axle the weight is, the heavier the car THINKS the weight can thank sir issac newton for that little bit of physics.speedway sells a really killer rochester,with holley jets for 250.00.hope that helps.

Dirt Forum Champ
Total posts: 1565
posted December 08, 2001 01:36 AM UIN: 54865418
if you don't have the money to buy a good carb you can get a tap at a hobby store for gas powers r/c car spark plugs and use that to tap the holes and you can put in holley jets thats waht i would recomend. you can buy a whole set of jets from like 60-99 for somewhere around $30. i found a good deal on one of those speedway carbs myself haven't put it no yet but the price was right

Dirt Forum Racer

Total posts: 98
posted December 09, 2001 08:42 AM
hey racer 17j? you wouldnt happen to be from Mtn. Pine would you?

Dirt Forum Champ
Total posts: 1565
posted December 09, 2001 01:49 PM UIN: 54865418
no i'm from iowa

Dirt Freak

Total posts: 408
posted December 10, 2001 06:49 AM
I would be glad to help you in the carb dept. If you like, email me directly at, or at, or call me in the evenings at 607-277-6462.
I can save you money, time, and hassles with the Rochester 2G carb you are running, and gain you significant performance over ANY other 2bbl out there of that type.
Each of our carbs are custom-built for the particular application they are being used for, and no carb of ours has ever failed a tech inspection.
Hope I can help.

Dayton Umholtz, owner
Kinetic Performance
Ithaca, NY

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