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For 3-Pin Porsche 911 CDI units,
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Here |
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KH400 Replacement Low Speed Stator Coil $79 ea. New high quality replacement for the low speed magneto winding of the KH400. |
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H2 Replacement Low Speed Stator Coil $68 ea. New high quality replacement for the low speed magneto winding of the H2. Also fits 1973 H1D stators. |
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1969-1971 H1 CDI unit $249 ea. Plug-and-Play 12V powered CDI unit to replace the original A and B units on the early H1. Also fits 1972 H1s that came with CDI. |
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H2 All-in-One Complete CDI set $249 ea. (Also for 1973 H1D) Same circuitry as all four original units, with much more robust components, in one package. |
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KH400 CDI Stockbox™ $299 ea. Same circuitry as original unit, with much more robust components. |
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H2/1973
H1D,E,F,
KH500
Super-Regulator™ $139 ea. (aluminum housing) $169 ea. (stainless steel housing, shown) Precision regulator allows use of original type batteries, sealed batteries, or no battery at all! |
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H2/1973
H1D
CDI Stockboxes™ $109 ea. |
H2/1973
H1D
Ignition Rectifier Stockboxes™ $109 ea. |
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H2/1973
H1D
Stockbox™ Sets $399 |
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H2/1973
H1D
Rebuilding
Service
We can put new parts in your original stock housings $59 each $199 complete set of four |
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H1
Late model (1974-1976 H1E, H1F, KH500) CDI All-In-1 Stockboxes™ (A and B units combined) With Stainless Steel Housing $149 ea. |
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H1 Late model (1974-1976 H1E, H1F, KH500) CDI All-In-1 Stockboxes™ (A and B units combined) With Printed ABS Housing $109 ea. |
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H1
Late Model (1974-1976 H1E, H1F, KH500) CDI (A unit) Stockboxes™ $129 ea. |
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Late model (1974-1976 H1E, H1F, KH500) Filter (B unit) Stockboxes™ $89 ea. |
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H1
Late
Model
Rebuilding
Service We can put new parts in your original stock housings $69 CDI Unit $49 filter (B Unit) $89 All-In-1 (A and B units combined in A box) |
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Customers' Triples Photos If you've bought from us, send your triple photos ![]() |
The Stockbox™
Story
I've had my H2 since the '70s, and have been plagued by failing ignition units since 1979. When I ran out of spares, I decided to try building some CDI units instead of buying more 35 year old ones. Since I had several failed units, I took one apart, and drew a schematic. Two parts were burned, and I couldn't read their values, but around then I found a published schematic. I made my first CDI and rectifier units based on this schematic, and they worked well. The bright blue sparks made it clear that the original units had degraded over the years. For reference, I took apart a couple more old ones, and was able to recreate the schematic of the original Kawasaki units made in late 1972 and 1973, and probably beyond. Since then, I've found that I'm not the only triple owner to have trouble with old CDI units, and have enjoyed making them for others. I have complete control of the quality of the parts and construction, so I feel that I'm safe to guarantee them for five years, which should take most of the risk out of trying a set. I've tested the Stockboxes to around 9,000 rpm on my H2, and to 14,000 rpm on my motorized alternator test bench, and they behave like the originals did when they were new, in every way. Old capacitors seem to be a weak spot in the original Kawasaki (Mitsubishi) CDI units. Interestingly, I haven't found any failed main capacitors, only the smaller snubber capacitors, which fail and cause the resistor in series with them to burn up in a spectacular way. The main ones, however, sometimes don't have their original capacitance. In this case, installing new Stockboxes is likely to result in better sparks, as well as better reliability, than even "new old stock" Kawasaki units can provide. Problems with the diodes in the small H2 rectifier unit show up as weak spark and poor running, or complete lack of spark. Here is a PDF file of the late 1972-1973 original Kawasaki H2 ignition boxes schematic: H2 Original Kaw Ignition Schematic I've made a few improvements to the original circuit as a result of many hours of testing, so that our new units behave as much like the original units as possible, and also to improve reliability. Our H2 and late H1 CDI units are now even immune to the infamous failure from accidentally connecting 12V to the white signal generator wire. -Jim Hobbs, Lakeland Services Co. |