
Attention aux arnaques carburateur
Audio Summary
AI Summary
The speaker begins by showing a complete carburetor repair kit for a CRF 80 2RF, including a bronze float, which is then corrected to brass, copper, and finally a special alloy. The kit also contains a fuel bowl gasket, a valve, a needle for the fuel, and various brass jets, including the idle jet. The speaker emphasizes the completeness and beauty of the kit, despite dropping some parts.
The speaker then recounts the history leading to this repair kit purchase. He bought a 2005 CRF80 with its original carburetor, which he decided to clean, disassemble, and inspect before restarting the engine. During this process, he removed the main jet (size 95) and the idle jet (size 38). Unfortunately, the idle jet broke, with a piece of its stem remaining inside the carburetor. Additionally, the fuel bowl gasket was cracked and torn, which would have caused fuel leakage.
Frustrated by these issues, the speaker looked for a new original equipment manufacturer (OEM) carburetor online. He found one on eBay for a 2005 Honda CRF80, advertised as a 20mm carburetor. He purchased it, believing it to be a genuine Honda part, complete with Honda packaging and OEM Genuine Parts logos. The new carburetor arrived with a plastic float and new jets. However, he immediately noticed that the jets in the new carburetor were smaller and unnumbered, typical of Chinese manufacturing, unlike the original Japanese carburetor. He initially thought he could adjust and drill them if needed.
A few days later, after installing the new carburetor, he decided to order additional jets to properly tune it, as the ones it came with seemed too small. He also considered repairing the original carburetor to have a backup, recognizing that the eBay carburetor might be a lower-quality Chinese product.
The speaker then reflects on past difficulties finding jets for a similar small carburetor on an XR80 he previously owned. He had searched extensively on eBay and specialized sites without success, noting that the jets were tiny, only 4mm. A year later, he believed he had finally found the correct 5mm jets, but upon testing, discovered they were incorrect. This past experience had led him to switch to a NIBI aftermarket carburetor, which offered more readily available jets for fine-tuning. He had purchased 5mm Keihin and NIBI jets for the main jet and 6mm for the idle jet, which were also incompatible.
He realized he had made a mistake in assuming the jet sizes based on photos and measurements, and had fallen for the same trap a year later. The jets he bought were in a range of 32-55 for idle and 100-140 for the main jet, but none fit his original carburetor. He also noted that the original carburetor's main jet started at 95, and he planned to increase it by 5 points if using an FMF exhaust, aiming for a size 100.
Returning to the broken original idle jet, he explains that he had managed to remove the broken bronze piece from the carburetor and cleaned all the passages. He then considered using the idle jet from the "Chinese" carburetor in the original OEM carburetor, assuming they would be interchangeable. However, he discovered that while the diameters were the same (4mm), the thread pitches were different, making them incompatible. He also found that the main jet from the Chinese carburetor, although too small, had compatible threads with the original.
Further inspection revealed that the "new" eBay carburetor was a scam. It was advertised as a 20mm carburetor but was actually only about 17mm. He realized this when the 17mm Chinese carburetor's bushing floated loosely in the original 20mm carburetor. This confirmed he had been duped on all fronts.
This long series of frustrations brought him back to his decision a year prior to switch to an aftermarket NIBI carburetor (either 17mm, 19mm, or 20mm, he couldn't recall exactly) because he couldn't find individual jets for the original one.
Fast forward to the present, he decided to finally repair the original 20mm carburetor properly. This led him to order the complete repair kit he is now presenting, acknowledging that he should have done so from the start, rather than buying a cheap new carburetor or incorrect jets.
The kit contains various internal parts, including a new float, a new needle (pine), and a mixture screw. Crucially, it includes an idle jet, which is slightly oxidized but present. He plans to measure it and check its size, hoping it matches the original 38mm. He is particularly excited about finding a main jet and idle jet that fit. He demonstrates the perfect fit of the 4mm main jet and expresses immense satisfaction.
He concludes by confirming that he can now rebuild his original 20mm OEM factory carburetor. He will measure and verify the new idle jet against the original 38mm size and replace all internal components, especially the torn fuel bowl gasket. The speaker ends with a literary reference to "the goat of Monsieur Seguin," symbolizing his own stubborn persistence in this endeavor.