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02-26-2024, 09:31 PM | #1 | |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,376
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Quote:
https://spicerparts.com/calculators/...ent-calculator Select metric, then enter these bore and stroke numbers from various listings for engines. I copied the info from 2 engines from AJ1, and 2 listings from ebay. I was surprised to find that they were all accurate claims when I entered the bore and stroke numbers on the listings. But I noticed something interesting. The Zongshen ZS174MN watercooled engine at AJ1... 74mm bore is like the OTOM kit I got, and if you use my stroke (61.4mm for the ZS172FM) you get 265cc, but if you use the stroke from the ZS174MN (65mm), you get 280cc. I think the OTOM kit assumes a 65mm stroke! Here they are: AJ1 Zongshen CB250F, ZS172FMM-3, 20hp bore x stroke 72mm x 61.4mm 249.9cc Spicer 249.99 AJ1 Zongshen CBS300, ZS174MN watercooled, 25hp bore x stroke 74mm x 65mm 279.5cc Spicer 279.56 Ebay lifan (Cleveland Cycleworks) 14hp 167FMM 67mm x 65mm 229cc Spicer 229.17 Ebay lifan 163FML bore x stroke 63.5mm x 62.2mm 197cc Spicer 196.98
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-2022 5 speed Templar X Orange, OEM 51T rear sprocket, 14T front sprocket -NOS 2020 KTM 250SX (2-stroke motocross), less than 10 hours on it Last edited by Thumper; 02-27-2024 at 08:49 AM. |
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05-14-2024, 12:06 AM | #2 |
Join Date: May 2024
Location: Minnesota
Posts: 1
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Is aj1moto legit? I'm new to the group, and have been using my 172fm-3a for a dirtbike project. Wouldn't mind exploring to other zs dirtbike motors for more power, but I've never heard of the aj1 until I stumbled upon this forum last week. Has anyone ordered an engine from them? Are they based in US or China? How does shipping work? Is it worth it?
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