| OK, you’ve definitely got some choices ahead of you when it comes to hopping-up your engine. And since the most popular and cost-effective plan is to swap the stock cam, carb, ignition, and exhaust components with high-performance aftermarket items, the combinations seem endless. Well, aside from the business of choosing the right setup, there is also the matter of installing them, and what I want to do here is show you how easy it really is.
There’s a feeling of satisfaction that comes with doing a job yourself, and doing it right. For the most part, almost all of the components bolt on the engine. If you read the cam installation story, you’ll see what it takes to properly install a camshaft, and here, we get the rest of the job done. The key parts that were chosen to complete this power combo were the Andrews EV-57 cam and adjustable pushrods we installed in the last story along with JIMS Machine roller-tip rocker arms, a Mikuni HSR 42 carb and intake, a Dyna 2000 HD-1 single-fire ignition with Dyna coils, and Cycle Shack bologna-cut pipes. |
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 Photo 1 |
 Photo 2 |
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We’ll start with the intake manifold and carburetor. Mikuni’s carb kits come complete with the intake manifold, air cleaner, cables and all the hardware and spare jets you’ll need to get running. The intake installs using the stock flanges and o-rings, and has a flange mount. The Mikuni carburetors have spigot-type mounting, so a rubber flange-to-spigot adaptor is provided in the kit. This easily bolts to the flange on the intake manifold (photo 1). Now the HSR 42 carburetor is slipped into the spigot, and a clamp secures the carb firmly in place (photo 2). The Mikuni/K&N air cleaner assembly (not shown) completes the carb’s mounting, and secures to the cylinder heads. |
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The dual Dyna ignition coils are bolted up to a Yankee Engineuity engine mount and coil bracket combination (photo 3). When this engine is installed in the bike, a polished stainless steel coil cover, also from Yankee, will finish the job. Dyna’s 2000 HD-1 ignition is an excellent system that features four different advance curves for various engine combinations. Dyna has eliminated the need to run a special rotor and pickup, and now the 2000 HD-1 utilizes the stock pieces, cutting down on the extras you’d normally have to buy. The stock pickup is re-installed (photo 4) and the timing will be adjusted once the engine is fired up. |
| Cycle Shack bologna-cut (pn PHD 114A) pipes were chosen for their exceptional performance in past dyno runs, and are well-suited for this power combo as well. These pipes have channel mount bolts for a clean look and mount easily to stock or custom aftermarket exhaust brackets. Pipes are probably one of the true bolt-on components that anyone can install (photo 5), but care should be taken to wipe them clean with acetone to remove any fingerprints. If you don’t do this, you’ll end up with little blue prints all over the pipes, so make sure they get wiped down before the engine is started. |
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| And there you have it (photo 6). The installation of these parts shouldn’t take more than one weekend day to complete at the outside. All of the parts used here come with excellent instructions for both installation and tuning to help you get the most from your engine and to minimize the downtime. With the tech tips shown here and in the cam installation story, you should be well armed to handle this task yourself. After you have this new found confidence and ability, you’ll have to decide if you want to tell your friends, ’cause once they know you’re able to work on your ride, they’ll probably want you to have a look at theirs. If they do, just smile and tell ’em where you read about it. | |
 Photo 6 |
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| …Wordman
SOURCES: |
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| Andrews Products, Inc. 5212 N. Shapland Ave. Rosemont, IL 60018 (773) 992-4014 (773) 992-4017 fax |
JIMS Machine 555 Dawson Drive Camarillo, CA 93012 (805) 482-6913 (805) 482-7422 fax |
| Dynatek 164 S. Valencia St. Glendora, CA 91741 (818) 963-1669 (818) 963-7399 fax |
Mikuni 8910 N. Mikuni Avenue Northridge, CA 91324 (818) 885-1242 (818) 993-7388 fax |
| Yankee Engineuity 1520-A West San Carlos San Jose, CA 95126 (408) 275-0203 (408) 275-0204 fax |
Cycle Shack 1104 San Mateo Avenue South San Francisco, CA 94080 (650) 583-7014 (650) 583-9154 fax |
