Hi, Karl. What have you done to calibrate the tach for the pulley ratios in the Vanagon application? Have you calculated the difference of the alternator speed vs engine speed in the Jetta as compared to what you have now? Do you know if all of the VW Diesel tachs assume the same pulley ratios? Thanks for any info as I hope to put a tach in my TD Westy soon. Mark Karl Mullendore wrote: > > Ever since I converted the Westy to the 1.9 TD I have been without a > tachometer, as some of you know, the diesel gets it's tach signal from the > alternator speed, which is why the gas model's tach won't work. I finally > located an instrument cluster from a 1989 Jetta TD. The tachometer is > externally identical with the Vanagon unit, so it screwed into the housing > perfectly. The only fabrication req'd was to get the proper faceplate. I > used the top 2/3 of the diesel tach faceplate, and the bottom 1/3 of the > Vanagon faceplate, screwing them to the housing with the diesel one in front > of the Vanagon plate. (used sharp tin-snips to trim each one) This enabled > me to use all the original Vanagon gauge layout. Voila! Engine speed now > known! Looks factory unless you look real close for the faceplate trim > lines! In the process of getting the proper gauge cluster, I ended up with > an extra from a '94 Golf/Jetta TD, if someone needs that let me know. > > Karl |
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