Jims Catalogue

EVO TAPPET BLOCK KITS

Optimized Pushrod Tube Counter Bores To Eliminate All Possible Oil Leakage

Tappet Blocks Keep Tappets Perpendicular and Flat to Cam Lobe, for the Ultimate in Tappet Roller Life

Counter Bored Screw

Squareness of Tappet Block Bore to

Holes To Eliminate Chrome Popping

Cam Lobe Centerline

EVO BILLET 7075-T651 TAPPET BLOCKS These blocks replace and surpass numbers 18542-83A and 18540-83A. Billet EVO Tappet Blocks are designed to accommodate a gross valve lift of .655” at the valves. This is about .350” at the tappets, leaving a clearance of .035” roller to block freeplay. Will clear most small base circle cams having a lift of .600” or more. We recommend using with JIMS ® Tappets No.2456-1. Any cam over .655” lift needs to be checked and should have .035” to .045” roller to block clearance. NOTE: If using a cam with a higher lift, a simple modification to tappet blocks is all that is needed. For more details see No.1094-IS instructions. Caution : You still need to follow cam manufacturers guidelines. Use JIMS ® EVO tappet block alignment tool No.33443-84. No. 1094 - Billet Polished Tappet Block Kit - Use on Big Twin single cam only 1984-1999, includes gaskets. No. 1094-K - Billet Polished Tappet Block Kit - Use on Big Twin single cam only 1984-1999, includes gaskets & chrome screws. No. 1094-C - Billet Chrome Tappet Block Kit - Use on Big Twin single cam only 1984-1999, includes gaskets. No. 1094-CK - Billet Chrome Tappet Block Kit - Use on Big Twin single cam only 1984-1999, includes gaskets and chrome screws.

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BIG BORE EVO TAPPET BLOCKS Same as our No.1094 Tappet Blocks, but with corrected pushrod cover angles for Big Bore Cases that have cam case areas that are moved out up to 1/4”-3/8”. For more details see No.1094-IS instructions. No. 1092C - Use on all aftermarket Big Bore crankcases, chromed, with gaskets.

BIG BORE EVO TAPPET BLOCK KIT Use this kit on all Big Bore cases that have the cam case area moved out 1/4"-3/8". Supplied with our performance hydrosolids. For more details see No.1800 & No.1094-IS instructions. No. 1092K - Use on all aftermarket Big Bore crankcases, chromed, with gaskets and screws.

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