I guess we’ll just have to find something to keep the guys down in JIMS R&D occupied. When most folks would rest on their accomplishments JIMS just keeps breaking new ground, and this time it’s a 95 inch barrel kit for twin-cams. This kit contains barrels, pistons, rings and gaskets, everything you need. The cylinders are made of aerospace quality 356-T6 aluminum, with high-grade cast iron sleeves. The pistons are made by Arias to JIMS exacting standards, and use a compression ratio of 10:1. JIMS tells us you can expect your horsepower to increase to between 85 to a 100. The kits are available in either black or plain aluminum finish.

We met up with Tom, at JIMS brand new R&D facility, and he managed to pull himself away from the hectic development pace long enough to go through this unbelievably easy install with us.
 

As with just about any engine modification, the seat and exhaust comes off first, (Photo 1) and, for safety’s sake, disconnect the negative battery cable from the battery. 
 

PHOTO 1

Once the fuel line to the carb is disconnected and the tank bolts removed, the tank can be raised, and a block of wood placed in the tank well to hold it out of the way. This can be done with the crossover still attached, if you’re careful. Be sure to use a small bungee cord to stabilize the tank (Photo 2). 

The carb comes off next, remove the cables (Photo 3) and set the carb aside.
 

Unbolt the manifold retainers and carefully remove the connector to the MAP sensor (Photo 4) before removing the manifold.

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