{"product_id":"briggs-vanguard-38-cid-overhaul-kit-75-5mm-843805-6m-ujeh-z245","title":"Briggs Vanguard 38 CID Overhaul Kit 75.5mm 843805","description":"\u003cp\u003eOverhaul kit for the 627cc, 38 cubic inch Briggs and Stratton Vanguard V twin at standard bore. The engine is 75.5mm bore by 70mm stroke. Contents: two standard 75.5mm piston and ring assemblies replacing Briggs 843805; a complete gasket and seal set made up for this engine, with a head gasket cut for the 75.5mm bore; two oil filters, 492932S; fuel filter 493629S, also catalogued 691035; two RC12YC type spark plugs, Briggs 792015, gapped at 0.030 inch; and a four ounce bottle of semi synthetic engine assembly lube with zinc and moly additives for the bearings, cam and lifters on first start. Rings alone are 843806. On the oil filters: this engine takes one filter, so the second is there for the oil change after break in. 492932S is the short two and a quarter inch filter, the same envelope and the same 3\/4 by 16 thread as the filter the engine's own parts list calls for, and it crosses to the same aftermarket filters. Oversize: the only oversize Briggs offers on this engine is .020 over, piston 843823 with rings 843824. There is no .010 and no .030. Identifying your engine: Briggs encodes displacement in the first digits of the model number, so a model beginning 38 is a 38 cubic inch engine and a model beginning 35 is the 570cc 35 cubic inch engine on a 72mm bore, which takes different parts. Model families covered include 381447, 385777, 386447, 386777 and 38E347. Do not select by horsepower: 38 cubic inch was sold at 21 and 23 horsepower, the 35 at 18 and 20, and the ratings were revised over the years. One part number worth knowing: Briggs 844009 is a piston with the connecting rod already attached, which costs considerably more and is not what this kit supplies. Rebuild figures from the Briggs V twin specifications: valve lash 0.004 to 0.006 inch cold, cylinder head bolts 165 inch pounds, connecting rod 115 inch pounds, flywheel nut 125 foot pounds, ring end gap 0.008 to 0.016 inch, spark plug gap 0.030 inch. Prime the oil filter before fitting, turn the engine by hand before the first start, and fill the oil to the dipstick rather than to a published capacity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOVERHAUL KIT FOR THE 627CC VANGUARD V TWIN AT STANDARD BORE - Two standard 75.5mm pistons with ring sets, replacing Briggs 843805, plus a complete gasket and seal set, two spark plugs, two oil filters, a fuel filter and a bottle of assembly lube. The 38 cubic inch Vanguard is 627cc, 75.5mm bore by 70mm stroke. This is the standard bore kit. If your block has been machined, the only oversize Briggs offers here is .020 over, piston 843823 with rings 843824 - there is no .010 and no .030.\u003c\/li\u003e\n\u003cli\u003eWHAT IS IN THE BOX, WITH THE NUMBERS - Two piston and ring assemblies, 843805, standard 75.5mm; rings alone are 843806. A complete gasket and seal set, head gasket included and cut for the 75.5mm bore. Two oil filters, 492932S - the engine takes one, so the second covers the oil change after break in. Fuel filter 493629S, also catalogued 691035. Two spark plugs, RC12YC type, Briggs 792015, gapped at 0.030 inch. A four ounce bottle of semi synthetic assembly lube.\u003c\/li\u003e\n\u003cli\u003eREAD THE MODEL NUMBER, NOT THE HORSEPOWER - Briggs puts the displacement in the first digits of the model number. A model beginning 38 is a 38 cubic inch engine, which is this one - 381447, 385777, 386447, 386777 and 38E347 among them. A model beginning 35 is the 570cc engine on a 72mm bore and takes other parts. Horsepower will not sort it: 38 cubic inch was sold at 21 and 23, the 35 at 18 and 20, and the ratings were revised over the years. The number is on the blower housing.\u003c\/li\u003e\n\u003cli\u003eONE PART NUMBER THAT CATCHES PEOPLE OUT - Briggs also lists 844009, which looks like a piston assembly and is a piston with the connecting rod already attached. It costs considerably more and it is not what this kit supplies. If your rods are good, 843805 is the part you want. If a rod is damaged, 844009 is a separate purchase. Check the rod bearing surfaces and the crank journals before you order either, because a kit like this assumes the bottom end is serviceable.\u003c\/li\u003e\n\u003cli\u003eFIGURES FOR THE REBUILD, FROM THE BRIGGS V TWIN SPECIFICATIONS - Valve lash 0.004 to 0.006 inch, set cold. Cylinder head bolts 165 inch pounds. Connecting rod 115 inch pounds. Flywheel nut 125 foot pounds. Ring end gap 0.008 to 0.016 inch. Plug gap 0.030 inch. Check ring end gap in the bore each ring will run in, prime the oil filter before fitting it, turn the engine over by hand before the first start, and fill to the dipstick rather than to a published capacity.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lil Red Barn","offers":[{"title":"Default Title","offer_id":68009593176218,"sku":"6M-UJEH-Z245","price":319.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0397\/2346\/6909\/files\/61q5_Yda_DL.jpg?v=1793382128","url":"https:\/\/performancesawsupply.com\/products\/briggs-vanguard-38-cid-overhaul-kit-75-5mm-843805-6m-ujeh-z245","provider":"Performance Saw Supply","version":"1.0","type":"link"}