Carburetor Main Jet #80 Mikuni JOG Minarelli 2 Stroke 1E40QMB 1PE40QMB

Carburetor Main Jet #80 Mikuni JOG Minarelli 2 Stroke 1E40QMB 1PE40QMB
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Price: $4.99 $4.99
Availability: In Stock
Part Number: B-300-1005-3021
Average Rating: Not Rated

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These are carburetor main jets (M6x0.75, Length 11mm) for the JOG Minarelli 49/50cc 2-Stroke engine. 1E40QMB 1PE40QMB These come in various sizes depending on your application. #75 is standard replacement with stock air box. , the #80 and #85 require a performance air filter system and the #90, #95, and #100 requires the performance air filter and performance exhaust system to get top performance. Installing a Performance Air Filter and Performance Exhaust System will give you that edge you're looking for.

Mechanics Note: If you increase the size of your stock carb jet or upgrade to a larger carburetor with larger jets, you will want to improve your air flow both in and out of the engine. For smaller upgrades replace the stock air filter with a Performance Air Filter for this engine. If you upgrade beyond small adjustments you will want to install a Performance Exhaust to handle the increased combustion and minimize back flow issues.

Altitude can play an issue in scooter performance. When you are dealing with elevation you will want to rejet to prevent your engine from siezing and requiring a rebuild. You will loose about 3% in power for every 1000' in elevation. At 4000' feet you will have lost about 12% of your power output. You will want to go down one (1) jet size for every 1750' to 2000' you go up in elevation. When the air is colder it requires bigger jets because cold air is more dense. If it is 50 degrees colder you would increase your jet size at least one step up. If you don't your engine can sieze on you.

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