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I haven't found any info from searching, but I was curious if a late model GS500 electronic ignition would swap into a GS400/425 crankcase?
I have read that although it is not a listed fitment, the Dyna s for the 400/425 will work on a GS 450 1980 - 1983 with the mechanical advancer assembly, although a spacer may be needed somewhere?
I believe the GS500 and GS450 use virtually the same cases, although I'm scratching my head now trying to remember if they use the exact part number or if the engine mounting is slightly different. I know the crankshafts are identical as well as most of the bottom and accept the shift drum due to the rear sets on the 500 requiring a reverse shift drum.
I'm wondering if the electronic advance version can be easily adapted to the 400/425, so I can get away from using Dyna S ignitions. I just replaced another Dyna S on my GS750 due to coils being out of spec and the center magnet piece getting very sloppy from 50,000 miles of use without pulling off to oil it as instructions describe to install it with a light coating of engine oil. This time I used moly based chassis grease on the replacement. The magnet was rubbing the pickup coils due to it's sloppy worn fit, and wore some of the plastic off, so I swapped it all out for new before a big road trip on the GS750 a few weeks ago.
I've had several other Dyna-S electronic ignition modules fail in the past. They seem to be very delicate as far as voltage supply and heat. I'm just looking to get something a bit more reliable.
I was looking at using the mechanical advancer ignition setup on my 4 cylinders off of a 1980 - 1983 GS just for the pickup section, and then making a DIY GM HEI igniter system based on some schematics and write-ups I had seen a decade or more ago on here. This might be a winter project for next winter to avoid using the Dyna and having failures in the future. The Dyna 2000 does look quite nice but is a little more high-tech and probably more bulky than I would care for.
C5 Optical Trigger ignitions no longer seem to be available for the GS400/425, I had that in my mind but I went to look it up just recently and their website no longer shows any bike ignitions.
I have read that although it is not a listed fitment, the Dyna s for the 400/425 will work on a GS 450 1980 - 1983 with the mechanical advancer assembly, although a spacer may be needed somewhere?
I believe the GS500 and GS450 use virtually the same cases, although I'm scratching my head now trying to remember if they use the exact part number or if the engine mounting is slightly different. I know the crankshafts are identical as well as most of the bottom and accept the shift drum due to the rear sets on the 500 requiring a reverse shift drum.
I'm wondering if the electronic advance version can be easily adapted to the 400/425, so I can get away from using Dyna S ignitions. I just replaced another Dyna S on my GS750 due to coils being out of spec and the center magnet piece getting very sloppy from 50,000 miles of use without pulling off to oil it as instructions describe to install it with a light coating of engine oil. This time I used moly based chassis grease on the replacement. The magnet was rubbing the pickup coils due to it's sloppy worn fit, and wore some of the plastic off, so I swapped it all out for new before a big road trip on the GS750 a few weeks ago.
I've had several other Dyna-S electronic ignition modules fail in the past. They seem to be very delicate as far as voltage supply and heat. I'm just looking to get something a bit more reliable.
I was looking at using the mechanical advancer ignition setup on my 4 cylinders off of a 1980 - 1983 GS just for the pickup section, and then making a DIY GM HEI igniter system based on some schematics and write-ups I had seen a decade or more ago on here. This might be a winter project for next winter to avoid using the Dyna and having failures in the future. The Dyna 2000 does look quite nice but is a little more high-tech and probably more bulky than I would care for.
C5 Optical Trigger ignitions no longer seem to be available for the GS400/425, I had that in my mind but I went to look it up just recently and their website no longer shows any bike ignitions.
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