Steel. In crankcase. Standard size is 2.1270". 360ř oiling. Note: The 93-99 B.T. pinion bushing features a 360ř oiling groove. These bushings can be used in 58-92 B.T. crankcases if a slight grinding modification is done to the case to align the oil feed hole in the case with the bushing.
Standard OD = 2.0015". Steel. In crankcase.
With locking detents. Steel. In crankcase. Standard O.D. size is 2.1270".
With locking detents. Steel. In crankcase. Standard O.D. size is 2.1270".
With locking detents. Steel. In crankcase. Standard O.D. size is 2.1270".
Without locking detents. Steel. In crankcase. Standard O.D. size is 2.1270".
Without locking detents. Steel. In crankcase. Standard O.D. size is 2.1270".
Without locking detents. Steel. In crankcase. Standard O.D. size is 2.1270".
Oversized exhaust seat. 1.750" (44.50) with +.010" oversized dimension. Repl. 1810-79 and 18055-66B.
Fits 57-85 Sportster models as a stock replacement tappet. Replaces an +.005" oversized version of OEM 18508-52B. Note: 517748 adjusting screw with 5/16" ball-end and 513466 lock nut are required and sold separately. Note: Standard O.D. is .731".
Non-hydraulic tappet. Weight 86 grams each. Must be used with 53-84 B.T. hydraulic style tappet blocks (available in polished billet aluminum from Jims as MCS 520033). Note: Must fabricate your own pushrods. Required length unknown at JIMS and depending on engine and cam. JIMS 517746 adjuster screw set & 513466 locknut set must be purchased separately. Note: Standard O.D. is .731".
Non-hydraulic tappet. Weight 86 grams each. Must be used with 53-84 B.T. hydraulic style tappet blocks (available in polished billet aluminum from Jims as MCS 520033). Note: Must fabricate your own pushrods. Required length unknown at JIMS and depending on engine and cam. JIMS 517746 adjuster screw set & 513466 locknut set must be purchased separately. Note: Standard O.D. is .731".
Hidden mount screws; billet 7075-T651 aluminum and exact positioning to the centerline of the cam bushing and pinion bushing within .0002". Features improved breathing; which is good for stock and even better for high performance applications. A positive two O-ring seal systems will keep oil where it belongs. These JIMS 2-piece gear covers are among the best made. Note: For replacement o-rings see 978025 (small) and 978026 (large).
Jims PowerglideT tappets will give you a superior hydraulic function when compared with OEM style equipment; a billet steel body with hand-honed hydraulic unitcavity and an oil fed axle. To get full power; you must have zero valve lash and eliminate collapsing of the hydraulic unit as is found in the OEM unit; also called ''the shock absorber syndrome''. Failing to keep the valve open the full amount results in power loss. The Jims Powerglide tappets come as close to a solid tappet as possible; but are still able to compensate for heat expansion. They will even work well with solid style camshafts. Weight 149 grams each. Fits as an oversized diameter improved replacement for OEM 18523-86A. Note: Standard size is .8425" O.D.
The hydraulics used will work with both hydraulic and solid style camshafts. An excellent replacement hydraulic tappet for stock and high performance applications. Made as an oversized diameter replacement for 17920-53A (hydraulic unit) and 18522-53A (tappet). Note: Standard O.D. is .731". Note: Upgrading 66-84 Shovels to JIMS pushrods? Use the MCS 978053 JIMS Powerglide upgrade kit. JIMS Note: some 78-84 H-Dr tappet blocks have oil drain hole location problems with some high lift cams.
The hydraulics used will work with both hydraulic and solid style camshafts. An excellent replacement hydraulic tappet for stock and high performance applications. Made as an oversized diameter replacement for 17920-53A (hydraulic unit) and 18522-53A (tappet). Note: Standard O.D. is .731". Note: Upgrading 66-84 Shovels to JIMS pushrods? Use the MCS 978053 JIMS Powerglide upgrade kit. JIMS Note: some 78-84 H-Dr tappet blocks have oil drain hole location problems with some high lift cams.
Clearanced up to about .700" lift cams; still clearance with performance cams must be checked. Weight 143 grams each. Jims PowerglideT tappets will give you a superior hydraulic function when compared with OEM style equipment; a billet steel body with hand-honed hydraulic unitcavity and an oil fed axle. To get full power; you must have zero valve lash and eliminate collapsing of the hydraulic unit as is found in the OEM unit; also called ''the shock absorber syndrome''. Failing to keep the valve open the full amount results in power loss. The Jims Powerglide tappets come as close to a solid tappet as possible; but are still able to compensate for heat expansion. They will even work well with solid style camshafts. Fits as an oversized improved replacement for OEM 18526-89. Note: Standard diameter is .9035".
Clearanced up to about .700" lift cams; still clearance with performance cams must be checked. Weight 143 grams each. Jims PowerglideT tappets will give you a superior hydraulic function when compared with OEM style equipment; a billet steel body with hand-honed hydraulic unitcavity and an oil fed axle. To get full power; you must have zero valve lash and eliminate collapsing of the hydraulic unit as is found in the OEM unit; also called ''the shock absorber syndrome''. Failing to keep the valve open the full amount results in power loss. The Jims Powerglide tappets come as close to a solid tappet as possible; but are still able to compensate for heat expansion. They will even work well with solid style camshafts. Fits as an oversized improved replacement for OEM 18526-89. Note: Standard diameter is .9035".
Must be used with adjustable pushrods. Jims ''Hydrosolid'' tappets have broken the limitations of all previous hydraulic tappet designs and is the best Jims tappet that is offered. This tappet works like a hydraulic tappet to about 5500 RPM; and then turns into a solid al the way up to where your rev. limiter takes control. At the time it turns into a solid the Jims Hydrosolid will add 3-6 horsepower. Even when the tappet rollers start lifting of the back of your cam you can be sure the Jims hydrosolid will never pump-up. Note: Must be used with adjustable pushrods. Note: Standard O.D. size is .8425".
Must be used with adjustable pushrods. Jims ''Hydrosolid'' tappets have broken the limitations of all previous hydraulic tappet designs and is the best Jims tappet that is offered. This tappet works like a hydraulic tappet to about 5500 RPM; and then turns into a solid al the way up to where your rev. limiter takes control. At the time it turns into a solid the Jims Hydrosolid will add 3-6 horsepower. Even when the tappet rollers start lifting of the back of your cam you can be sure the Jims hydrosolid will never pump-up. Note: Must be used with adjustable pushrods. Note: Standard O.D. size is .8425".
+.002 inch oversize. OEM style replacement tappet only; without the hydraulic unit. A stock type hydraulic unit must be (re)used or purchased separately. Weight 89 grams each. Note: Standard O.D. is 731".
+.005 inch oversize. OEM style replacement tappet only; without the hydraulic unit. A stock type hydraulic unit must be (re)used or purchased separately. Weight 89 grams each. Note: Standard O.D. is 731".
Tappet is not adjustable; must therefore be used with an adjustable type pushrod. Tappet weight 109 grams each. Note: Standard outside diameter is .8425".
Tappet is not adjustable; must therefore be used with an adjustable type pushrod. Tappet weight 109 grams each. Note: Standard outside diameter is .8425".
Fits 57-85 Sportster models as a stock replacement tappet. Replaces an +.002" oversized version of OEM 18508-52B. Note: 517748 adjusting screw with 5/16" ball-end and 513466 lock nut are required and sold separately. Note: Standard O.D. is .731".
.500" valve lift. Bolt-in; good torque. 74" to 89" with 9:1 to 10.5:1CR and 89" to 100" with less than 9.5:1CR. Used with solid or hydraulic lifters with adjustable pushrods. Clearance checks recommended. Note: Stock 86-03 XL valve springs are okay to .510" valve lift.
Will not fit stock Shovelheads. Designed for use with Evo style cam and S&S Evo tappets and tappet blocks for Shovelheads. Drilled; for use with ''through the pushrod'' top-end oiling systems. Fits S&S SH-series motors and OEM Shovel with top-end oiling Evo style with S&S 512493 rocker arms; S&S Evo style tappets; tappet guides and an Evo B.T. style cam. Note: Stock replacement for S&S 107" and 111" EV-series engines.
Std cyl. bore: 3.00" (76.20mm). 1st ring: 1.5mm. 2nd ring: 1.5mm. oil ring: 2.75mm. Tech tip: Piston grooves vs piston rings. It''s not difficult to determine if a Hastings piston ring set will fit a certain piston. You should measure the height of the piston groove in the piston itself. The 2 top grooves will be for compression rings; the lower groove will be for the oil ring. In most cases Hastings oil rings are of the low tension 3-piece flex vent type. Ring heights are listed for reference. Tech tip: Piston oversizes. For each oversize cylinder diameter will increase with .010" (0.254mm). The standard bore of the cylinder is listed for reference. (Tech tip information provided by Hastings Manufacturing Company; Inc.)
Std cyl. bore: 3.00" (76.20mm). 1st ring: 1.5mm. 2nd ring: 1.5mm. oil ring: 2.75mm. Tech tip: Piston grooves vs piston rings. It''s not difficult to determine if a Hastings piston ring set will fit a certain piston. You should measure the height of the piston groove in the piston itself. The 2 top grooves will be for compression rings; the lower groove will be for the oil ring. In most cases Hastings oil rings are of the low tension 3-piece flex vent type. Ring heights are listed for reference. Tech tip: Piston oversizes. For each oversize cylinder diameter will increase with .010" (0.254mm). The standard bore of the cylinder is listed for reference. (Tech tip information provided by Hastings Manufacturing Company; Inc.)
Solid PTFE; with metal band and choker spring. Stem diameter: 5/16" (0.311"). Valve guide diameter: 0.425". Over all length of seal: 0.386". Outside diameter of seal: 0;512". Kibblewhite Precision Machining custom valve stem are a quality product and suitable for any and all custom application. Kibblewhite Precision Machining custom valve stem seals are a quality product and suitable for any and all custom applications. Note: Below mentioned valve stem diameters are for reference only. - 36-84 B.T. = 3/8" (.3750") - 57-83 XL intake = 0.3090" - 57-83 XL exhaust = 0.3384" - 84-04 B.T.; 86-03 XL = 5/16" (.311") - 05-16 TCA/B; 04-22 XL; 08-12 XR = 7mm (.2760") - 02-17 V-Rod = 6mm (0.2345") - 17-24 M8 = 6mm (0.2345") Installation note: Valve guides made of PTFE require another fitment technique than ''regular'' or non-PTFE valve guides; this is due to the PTFE material. They are typically 0.020" (0.50mm) smaller than the valve stem and guide top they're designed to fit. - The guide top should have a decent chamfer - The valve stem should have a decent chamfer; but a mylar seal installation protector / installation capsule (501823 green 5/16" / 0.3125"; 501824 Yellow 11/32" / 0.34375"; 501825 3/8" / 0.375") is advised for easier installation over the valve stem - You have to kind of roll the seal around the valve tip while exerting downward pressure to get it started - Don''t push directly on the very top of the seal to get it on to the guide; you'll collapse the seali
Solid PTFE; with metal band and choker spring. Stem diameter: 5/16" (0;311"); valve guide diameter: 0;500"; over all length of seal: 0;510"; outside diameter of seal: 0;600". Kibblewhite Precision Machining custom valve stem seals are a quality product and suitable for any and all custom application. Note: Below mentioned valve stem diameters are for reference only. - 36-84 B.T. = 3/8" (.3750") - 57-83 XL intake = 0.3090" - 57-83 XL exhaust = 0.3384" - 84-04 B.T.; 86-03 XL = 5/16" (.311") - 05-16 TCA/B; 04-22 XL; 08-12 XR = 7mm (.2760") - 02-17 V-Rod = 6mm (0.2345") - 17-24 M8 = 6mm (0.2345") Installation note: Valve guides made of PTFE require another fitment technique than ''regular'' or non-PTFE valve guides; this is due to the PTFE material. They are typically 0.020" (0.50mm) smaller than the valve stem and guide top they're designed to fit. - The guide top should have a decent chamfer - The valve stem should have a decent chamfer; but a mylar seal installation protector / installation capsule (501823 green 5/16" / 0.3125"; 501824 Yellow 11/32" / 0.34375"; 501825 3/8" / 0.375") is advised for easier installation over the valve stem - You have to kind of roll the seal around the valve tip while exerting downward pressure to get it started - Don''t push directly on the very top of the seal to get it on to the guide; you'll collapse the sealing area and tear the seal - A 12 point 12mm socket catches the shoulder of the guide pretty well and can be used to push
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