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Location:
Ipswich
Registered:
July 2002
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New Tacho
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Thu, 18 July 2002 12:12
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Hey guys and gals. When i get my new 1g-gte installed will i need a new tacho as i am going from 4 cylinders to 6 cylinders? Or can the old one be adapted somehow?
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Location:
c'town, NSW
Registered:
May 2002
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Re: New Tacho
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Thu, 18 July 2002 12:19
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one option is to pick up a MA45 tacho as i did, but they are rare as... other option is to take it to an instrument place and get it re-calibrated...
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Location:
Ipswich
Registered:
July 2002
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Re: New Tacho
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Thu, 18 July 2002 12:25
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thx rob. You don't happen to know of a instrument place in the brisbane area???
Anybody else know???
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I supported Toymods
Location:
I renounced punctuation
Registered:
May 2002
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Re: New Tacho
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Thu, 18 July 2002 12:27
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There is a small variable resistor on the circuit board of the tacho. You (or an instrument store) can adjust this to calbrate it. I put a TA22 tacho into my Corona Mk2 and adjusted the varipot to give the correct rpm. I temoparily wired in another 6 cylinder tacho for calibration (I used a combined dwell angle meter/tacho actually).
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Location:
Newcastle, NSW, Australia
Registered:
May 2002
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Re: New Tacho
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Sat, 20 July 2002 04:57
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Calibrating RA40 tacho's are a problem as there is not a vairable pot on the board. I have in the past provided two different instrument fitters with RA40 tachos for calibrating and they both said the time it would take to experiment with the circuit would be more than the job is worth. If anyone finds an instrument fitter that CAN do this job please let me know.
Sorry this is not what you want to hear. The MA45 option may be your best.
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: New Tacho
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Sat, 20 July 2002 06:16
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If someone can donate one of these items and bring a 6 clc around i'm sure i can have a play with the circuit!
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Location:
Sydney
Registered:
May 2002
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Location:
Ipswich
Registered:
July 2002
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Re: New Tacho
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Sat, 20 July 2002 15:50
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Cool1. I will have a spare in a few weeks when i change to a 6 cylinder. Would love it if ya had a play and got it running for me.
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: New Tacho
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Sun, 21 July 2002 08:43
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It would be a good learning experience! I work with electronics so i have a little knowledge of electronics 
Its just a matter of looking at the circuit and then connecting it to an engine with a taco already fitted then playing with some values!
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