Diesel tach/ Diesel alternator!! - IDI Engine - VWDiesel.net The IDI, TDI, and mTDI source.

• Diesel tach/ Diesel alternator!! by wolfboy on 04 Dec, 2007 13:59
• Hi, i own a vw 2.4 van with a w feed alternator fitted. I bought a set of dash clocks from a similar aged 1.9td van with a rev counter rather than a clock. When fitted the rev counter goes round to the max position. Anyone any ideas? I seem to be chasing my tail at the moment- not a good look!! Many thanks in advance, Matt.
• #1 by Vincent Waldon on 04 Dec, 2007 14:09
• I'm guessing your rev counter goes up to 7000 rpm ??
  
  You probably have a dash for a gas van rather than a diesel... the rev counter signals are different and so is the calibration.
  
  There is a converter box available which some have used to convert the signal:
  
  http://www.dakotadigital.com/index.cfm/page/ptype=product/product_id=128/category_id=287/home_id=59/mode=prod/prd128.htm
  
  There are also some accounts of people modifying the circuit boards... although I've never seen specifics for a van cluster.
  
  Obviously the easiest approach is to get the correct cluster.... not always an easy task of course.
• #2 by wolfboy on 04 Dec, 2007 14:16
• Hi, thanks for reply. My clocks only go to 5000 as they came from a 1.9 turbo diesel van. Hence my confusion!!
• #3 by moise on 05 Dec, 2007 02:15
• i've got that:
  
  
  
  
  
  
  
  
  
  
  
• #4 by CasualDays on 05 Dec, 2007 08:00
• Where did you find that one? I' looked on their site, but I didn't see it.  I love that style and size.
• #5 by moise on 05 Dec, 2007 08:14
• i find it in england --> ebay
  
  you can find in france too:
  
  click here
• #6 by clbanman on 05 Dec, 2007 09:23
• I did a search on their North American site and all I got was:
  http://www.autometer.com/cat_gaugedetail.aspx?gid=3331&sid=11
  http://www.autometer.com/cat_gaugedetail.aspx?gid=2749&sid=9
  http://www.autometer.com/cat_gaugedetail.aspx?gid=2602&sid=12
• #7 by wolfboy on 05 Dec, 2007 10:33
• Did that run straight off your alternator? Any diodes or resistors etc involved?? Many thanks, Matt.
• #8 by CasualDays on 05 Dec, 2007 10:43
• Quote from: "clbanman"

  
  http://www.autometer.com/cat_gaugedetail.aspx?gid=2749&sid=9
  

  
  
  This is the one..a bit expensive but I like it!
  
  What does it mean my "fabrication required: modification to the flywheel" ?
  
  Can this go to any diesel like the OP Vanagon? Or are there other "modifications" required?
• #9 by regcheeseman on 05 Dec, 2007 12:52
• Your 2.4 is an IDI and the 1.9 clocks are from a TDI.
  
  TDI clocks take a signal from the ECU
  
  You cant run them from the W term on the alt.
  
  The easiest solution is to send 20 and a revcounter from a gasser to me and I'll mod it.
  
  I've got a spare circuit board here, if you can solder two terminals you can swap it into your existing TDI guages. Probably.
• #10 by shegel on 05 Dec, 2007 13:43
• ive got the auto gage 2888 in the mail. now i just need to make the time to hook it up
• #11 by clbanman on 05 Dec, 2007 15:56
• On each of the link pages there is a link to installation instructions.  The 2888 looks to be the easiest to install as it uses a sensor that mounts to the alternator, but would also be the least accurate.  The 6806 should be the most accurate, but most work to install.  Looking at the instructions, I think you could use the crank pulley instead of the flywheel.  I think maybe tabs welded to the face of the pulley would be the easiest, not sure if they would cause problems otherwise.
  
  shegel,  what is street price on the 2888?