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HD-8 K&N Air Filter Conversion
- Thread starter hmj6854
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Bob_Spidell
Yoda
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Nope; please post the info if possible.
I had a set custom made by David Anton of APT many years ago, with stub stacks inside. I'm glad I have them every time I go through a dust cloud; they dirty-up fairly quickly. David was willing to make a batch and I had a dozen or so owners signed-up to buy a set but his wife was injured in a car accident and he lost interest in the project.
I had a set custom made by David Anton of APT many years ago, with stub stacks inside. I'm glad I have them every time I go through a dust cloud; they dirty-up fairly quickly. David was willing to make a batch and I had a dozen or so owners signed-up to buy a set but his wife was injured in a car accident and he lost interest in the project.
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I have the K&N air filters shown in the top photo. They look great and I do like K&N products overall. However, there is a small bracket that is attached to mount the front flange which is held by an acorn nut. That bracket makes using a UniSyn almost impossible. Particularly the front carb. I now use the method that uses wires in the dash pots. I have just had my carbs off after cleaning and doing a minor rebuild. I am deliberating whether I will go back to original air filters or put the K&N carbs back on it. AN ASIDE: Replacing the nuts on the two bottom, interior mounting bolts is the most frustrating "simple" job I have ever attempted. It was hard enough to get the rear one off, but now replacing them is proving to be a bigger challenge. Definitely no thought by the engine designers for future maintenance. The throttle shaft needs to be able to be be separated with a coupling so it can be installed after the carbs are put back on the manifold.
Bob_Spidell
Yoda
Offline
The 'wires in the dashpots' technique is credible, and I use it. Plus, it allows one to check airflow--and, at least indirectly, throttle position--across the range. But I do think UniSyns are a bit more accurate (maybe not enough to be worth the trouble). The canonical method for checking carb airlow is to read them separately--not very useful with the wires--then linked together.