The engine cases are a JIMS product, beefier and with a much wider cylinder-stud spacing that can accommodate a bore of up to 4.8 inches stock cases can only handle up to 4.125 inches, and even then, just barely. Visually, the JIMS motor looks much like a stock Twin Cam engine, but it’s far from it virtually every piece has been manufactured just for this kit. But despite supposedly being a competition motor, it comes with a warranty that extends 90 days from the date of purchase. How much “wink-wink, nudge-nudge” you interpret into that claim is your call. Both H-D and JIMS clearly and emphatically state that this is not a street-legal engine it’s for racing only. The end result is the $8000 Cam Race Kit, which fits Dyna and FL models and is claimed to produce 125 rear-wheel horsepower and 121 foot-pounds of torque.Īlthough the kit is manufactured by JIMS at its headquarters in Camarillo, California, it is available only through Harley-Davidson dealers. Harley also granted JIMS access to its engine technology to help develop larger-displacement version the Twin Cam 88 motor. For quite some time, JIMS has been supplying Harley with select components, including lifters for stock engines as well as stroker crankshafts sold through H-D’s Screamin’ Eagle accessory division and used in some of the company’s 103-inch Custom Vehicle Operations models. This engine is the product of collaboration between JIMS Machining-manu-įacturer of aftermarket components and special tools for Milwaukee iron-and The Motor Company itself. It’s called a kit because it comes partially assembled in three boxes final assembly is up to the owner or a capable mechanic. This “kit” is a complete Twin Cam powerplant, right down to the carburetor and ignition, and it packs a 120-cubic-inch wallop instead of the stock motor’s 88. If you subscribe to that bigger-is-better philosophy, JIMS Twin Cam Race Kit speaks your language. Cams and valves, carbs and compression, pipes and ignition all add punch to a motor’s output, usually more in one rpm range than another but when you add inches, the power program steps up everywhere. If you wish to ensure that multiple items you have purchased are combined please send us a message.IT’S AN AGE-OLD CLICHÉ BUT JUST AS true today as ever: You can’t beat cubic inches. We do our best to combine shipping on orders.Shipping times will vary depending on the country the item is being shipped to. All international items will ship via USPS Priority Mail International or USPS Express Mail International for addition fee. The shipping costs do not include duty or import taxes so please check before you purchase an item. Limitations due to manufacturer's restrictions on some items may apply. We will do our best to work with you to get you your item as fast as possible. ETA's provided by eBay are ESTIMATED TIMES, we aim to get you your order within these time frames however some unforeseen circumstances do arise. In the event of a prolonged delay we will make our best effort to contact and notify you of such delays. In the case this happens, we place your parts on an emergency restocking order and the item will generally ship within 1 business day. However, in some instances seasonal items sell very fast and can be subject to temporary delays. Our inventory is constantly updating and changing, we do our best to keep it as accurate as possible. This is to ensure your package gets to you as quickly and as well packaged as possible. We reserve the right to change shipping carrier based on location or for combined orders. Additional charges for Alaska, Hawaii, Puerto Rico and Guam may apply.
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