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RustyWa |
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#1
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Working Member ![]() ![]() ![]() Group: Members Posts: 610 Joined: 2-January 03 From: Kent, WA Member No.: 72 ![]() |
I forgot to take photos of this, but I might in a few days. On my rebuilt dizzy, I noticed that the cam lobe for the FI trigger points was at a different location than what my stock dizzy had it at.
Going from memory, on the stock dizzy, the point on the cam lobe was pretty much lined up to at the #1 spark. On the rebuilt, it was like 30-45 degrees off of this point. I can't remember if it was before or after #1. Anyone ever notice this before? Would it make a difference for the fuel timing? Doesn't the fuel charge just sit in the intake anyways waiting for the valve to open. I'll try to get some photos later on. |
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RustyWa |
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#2
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Working Member ![]() ![]() ![]() Group: Members Posts: 610 Joined: 2-January 03 From: Kent, WA Member No.: 72 ![]() |
There seems to be a few mass produced rebuilt dizzys out there, so here's some more info for the archives.....
Well, these are not the photos I was originally going to get, but I think they should illustrate a little better of how the two dizzys compare as far as differences of the cam lobes. My stock dizzy is the two diagrams on top. The two below are the rebuilt dizzy. The notch in the dizzy for the #1 cyl. is marked at approx. the 4 o'clock position and the notch for the cap is marked at 6 o'clock. Typical. The dark zone illustrates the continuity area on the FI trigger points as the rotor/shaft is rotated. The left diagrams are for terminal pair 21/12 and the rights are the 12/22 pair. The "continuity zones" didn't seem to be quite 180 degrees....but I was just eyeballing it, so the zones could be off a few degrees. I'm not sure if this difference even matters because the injector is only going to fire (milliseconds) at one spot within the zone. Attached image(s) ![]() |
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