I have a BJ42 and would like to add a Tach. I know how to do a gas engine, but not sure about a diesel. I am sure Toyota included a Tach on some of it's later trucks like the FJ60 and 62. Since there is no ignition system on a diesel how do I do it. I know there can be a geared mechanical driven system but I'm thinking that's less practical to add on.
Putting a Tachometer on a 3b diesel - how too? (1 Viewer)
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I’d like to add one to my BJ40. Interested in the answers you get 
jim land
SILVER Star
I remember some threads about tinytach or something like that, it should be easy to find in the diesel section
Living in the Past
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Diesels used a magnet on the flywheel and sensor in the bellhousing to count the rotations.
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- #5
Good.I’d like to add one to my BJ40. Interested in the answers you get
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- #6
That doesn't sound like something I can do. Or, is there a kit for that?
Brian/99uzj100
SILVER Star
I don't have a diesel, but the light bulb on my 6k auto meter tach just went out and I have to send it to them for a free bulb replacement.
I was looking online at 5k tachs for my 2F and found this for diesels. It explains the installation process.
It's a lot more expensive than my $50 6k tach though.
I was looking online at 5k tachs for my 2F and found this for diesels. It explains the installation process.
It's a lot more expensive than my $50 6k tach though.
That looks like a pretty easy installation! Just gotta find someone with the tool to calibrate it. Otherwise you are out another couple hundred.
2-5/8" PEDESTAL TACHOMETER, 0-5,000 RPM, Z-SERIES
2888 Gauge, Tachometer, 2-5/8", 5k RPM Diesel, Pedestal, Z-Series
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- #9
You know, you ask a question on Ih8 mud and if there is an answer someone knows. Thanks for the information.
jim land
SILVER Star
Tachnometer for 3B
Dear all, I am looking forward to install a tachnometer on my bj40. I have a 3B engine, does anyone know where to get a tach for this engine? If do, where do i install it on the engine? All i know diesel tachnometer measures engine rpm via the flywheel teeth. Am i correct. Hope there is a...
forum.ih8mud.com
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- #11
AutoMeter, they have a u tube presentation. the sensor goes on the alternator and you adjust it to the engine rpm.
I have an Auto Meter pro comp digital tach on my B. You get an attachment that attaches to the alternator--calibrate and go--works great..
FJBen
SILVER Star
I used a tinytach as well on my old Isuzu P'up diesel. Not the most pleasant to look at, but worked nicely.
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- #14
Thanks for the information.
Tiny tach is good enough for me works like a charm
I assume you are running 24volts? All the models show 12 or 16 volts. Any issues?
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- #17
The biggest issue is that you have to ask if products will work. If I wanted an digital instrument cluster - they don't work on 24 volts systems, at least the ones i'v looked into. You will likely have to live with Kilometers, new speedometers in miles are hard to find.
I'm 12v, so no issues. Here are the model numbers.
Auto Meter 6397 Sport Comp Digital 3-3/8" 10000 RPM Digital In-Dash Tachometer
DIESEL TACH ADAPTER
Product # 9112
Got mine at Amazon
Living in the Past
SILVER Star
Not sure it was LX models for the BJ42. These seem to be standard on the HJ47 from 10/81 on in Australia. That is when the insert dash started on RHD. Diagram list the tachometer with a ARL which assume is Australia only. List available for FJ40/BJ42/HJ47. Would love to find one from a FJ40 but settling on one from a HJ47 and modifying a FJ62 tachometer.
