Jims Catalogue

BIG TWIN EVO TAPPETS

JIMS BIG AXLE “POWERGLIDE ™ ” HYDRAULIC TAPPETS FOR EVO PERFORMANCE AND STOCK CAMS ( WILL ALSO WORK WITH SOLID STYLE CAMS )

The title tells the whole story. Power is what you are after when you’ve installed a high performance hydraulic cam in your EVO motor. To get full power, you must have zero valve lash, and eliminate collapsing of the hydraulic tappet as found in stock hydraulic units. This is referred to as the shock absorber syndrome. Failing to open the full amount as the cam is designed to do, results in power loss. “Powerglide ™ ” eliminates the shock absorber action. “Powerglide ™ ” is as close to a solid tappet as possible and is still able to compensate for heat expansion.

“Powerglide™” tappets are capable of the highest RPM a Harley ® can safely turn (about 8025 RPM) at a valve lift of .700”, with the right valve springs, valves, cam, oil, etc. We recommend using with JIMS ® tappet blocks No.1094. It is not necessary to use a limiting travel washer in "Powerglide TM " tappets. For ALL OUT performance use a Hydrosolid tappet. 1. Longest valve train engine life. 2. Produced from billet bearing steel. The same high quality steel our shafts and crank pins are made from. 3. The best made JIMS ® big axle roller. 4. The ultimate in hydraulic control system, per- forms better under both the lower and the higher RPM limits, and high spring pressures. 5. A true centerline for roller life and exact cam timing. 6. State of the art pushrod seat, machined with the same segmented parabolic cup as the JIMS® roller rockers. Helps eliminate pushrod whip. 7. Engineered on a state of the art CAD System, and machined in some of the world’s most accurate precision computer controlled machinery. 8. Hand fit hydraulic unit to a running fit of .0002”, with ultra precision air gauging sys- tem. 9. All hydraulic units are tested 100% for func- tion under a simulated pressure test fixture. 10. The best warranty policy in the industry. Glide is what you get when hand matching hydraulic components to a running fit of .0002”. For this rea- son “Powerglide ™ ” tappets have a microfinished bore for the hydraulic unit to glide over. “Powerglide ™ ” tappets are right at home in H-D ® tappet blocks, unlike other performance tappets that require special tappet blocks. These tappets will run in cast iron or aluminum tappet blocks. JIMS ® recommends fitting the tappets to the blocks with a clearance of .0007” to .0012”. For worn out tappet blocks JIMS ® is proud to offer +.002”,+.005” and some .010” oversize tap- pets. THE POWERGLIDE™ ADVANTAGE

MADE FROM BILLET BEARING STEEL EVO HYDRAULIC TAPPET

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INTERNAL RETAINING RING

PUSHROD SEAT

METERING DISK HYDRAULIC UNIT BODY RETAINING CAP VALVE WASHER

VALVE SPRING

RETAINING CAP SPRING

TAPPET BODY

BIG AXLE CRIMP PIN

ROLLER BEARING

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