I want a TACHOMETER !

Dealing with all subsystems specific to the diesel powered Datsun-Nissan 720 pickup trucks.

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Knucklehead
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Location: Phoenix

#16

Post by Knucklehead » 13 years ago

DHRA! Alright!

No, sorry. I'm looking to fit a stock tach. It's not too hard, I just need one thing to make it work and then I can share it with everyone!
'82 standard cab 3 axle SD22 turbo
'89 int'l 9700 Cummins 444 (855 ci)
'29 HD FD export model

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philip
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Location: Southern California, USA

#17

Post by philip » 13 years ago

TooManyIdeas wrote:http://www.autometer.com/search_results.aspx?q=diesel

hope this might help
I like the 5k autometer. The "inductive probe straps to the alternator" solution is easy and the meter itself is adjusable to alternator RPM.

If I had to choose between the tach vs. a pyro .... I'd take the pyro. I can hear rpm but, I can't feel exhaust heat.
-Philip
Passed 08May2008
My friend, you are missed . . .

1982 Datsun 720KC SD-22

"Im slow and I'm ahead of you"

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Knucklehead
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#18

Post by Knucklehead » 13 years ago

Very wise.
'82 standard cab 3 axle SD22 turbo
'89 int'l 9700 Cummins 444 (855 ci)
'29 HD FD export model

olpeppy
Posts: 8
Joined: 14 years ago
Location: north carolina

tach

#19

Post by olpeppy » 13 years ago

hello all, been a while since i posted anything, been busy on alot of different things. my 84 sd25 has a removable cover where the revolution sensor goes. was going to show a pic but wasn't sure about the different procedure to do it. it would be nice to do but the price is far from my limits. i have checked in the past on a tach from nissan dealer and was told it was $275. that wasn't including the revolution sensor. anyways phillip i hope all is well your way and good wishes to all.

bacho
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Location: Greenville South Carolina

#20

Post by bacho » 13 years ago

Anyone know how much that autometer runs?
1992 nissan pathfinder 4x4
1985 KC 720 4x4
1982 KC 720

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philip
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Location: Southern California, USA

#21

Post by philip » 13 years ago

bacho wrote:Anyone know how much that autometer runs?
http://www.autometer.com/ (catalog)

http://autometer.carshopinc.com/product ... /8515/2888

5000 RPM DIESEL TACH
AUTO METER 2888
Image Est $125 (USD). You might better ask AutoMeter about this tachometer being electronic or mechanic.
-Philip
Passed 08May2008
My friend, you are missed . . .

1982 Datsun 720KC SD-22

"Im slow and I'm ahead of you"

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asavage
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#22

Post by asavage » 12 years ago

Image Image

Here's a tach setup from member "Tom Young"'s boat engine, which does not use that sensor hole, but rather a timer cover adapter:

Image
Last edited by asavage 12 years ago, edited 1 time in total.

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Zoltan
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Location: Honolulu, HI

#23

Post by Zoltan » 12 years ago

This is a very easy install.


Image................. Image
- Zoltan -
________________________________
'82 Datsun 720 SD22 California model
'86 Ford Escort 2.0L Diesel

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philip
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#24

Post by philip » 12 years ago

Zoltan wrote:This is a very easy install.
Bravo !! I just need a magnify glass over it. :roll:
-Philip
Passed 08May2008
My friend, you are missed . . .

1982 Datsun 720KC SD-22

"Im slow and I'm ahead of you"

moose60
Posts: 168
Joined: 14 years ago
Location: Seattle WA

#25

Post by moose60 » 12 years ago

Well done! I was wondering if anyone was actually going to buy one of those. I have heard mostly positive reports on other sites. Is the slowish refresh annoying?
Byron

82 Datsun 720 KC SD22

MPG Machine

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asavage
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#26

Post by asavage » 12 years ago

I'm certain that I would not want to use the rocker bolt as a ground point.

The gauge looks quite good in the clock location :)
Regards,
Al S.

1982 Maxima diesel wagon, 2nd & 4th owner, 165k miles, rusty & burgundy/grey. Purchased 1996, SOLD 16Feb10
1983 Maxima diesel wagon, 199k miles, rusty, light yellow/light brown. SOLD 14Jul07
1981 720 SD22 (scrapped 04Sep07)
1983 Sentra CD17, 255k, bought 06Jul08, gave it away 22Jun10.

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Zoltan
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#27

Post by Zoltan » 12 years ago

moose60 wrote: Is the slowish refresh annoying?
No,not at all !! I find the refresh rate perfect.
asavage wrote: I'm certain that I would not want to use the rocker bolt as a ground point.
Worked so far... I guess it can be inconvenient if the valve cover is removed frequently. I will probably find an other spot for the ground next time I have to remove the cover.
philip wrote: Bravo !! I just need a magnify glass over it.
:lol: I know what you mean... I just started having to wear reading glasses. The numbers are actually bigger than they seem. They are certainly bigger than the Km/h numbers on the speedometer gauge. The only disadvantage I found with this installation is that one cannot see the tach at night.

When the engine is not running the tiny tach shows total service time on the engine (in hours and minutes). Could be used as an indicator when to change oil.
Last edited by Zoltan 12 years ago, edited 1 time in total.
- Zoltan -
________________________________
'82 Datsun 720 SD22 California model
'86 Ford Escort 2.0L Diesel

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philip
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Location: Southern California, USA

#28

Post by philip » 12 years ago

Zoltan wrote:
philip wrote: Bravo !! I just need a magnify glass over it.
:lol: I know what you mean...
When the engine is not running the tiny tach shows total service time on the engine (in hours and minutes). Could be used as an indicator when to change oil.
Driving at 60mph in 5th gear, what is the RPM?

And at 38 mph in 3rd gear, what is the RPM?
-Philip
Passed 08May2008
My friend, you are missed . . .

1982 Datsun 720KC SD-22

"Im slow and I'm ahead of you"

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asavage
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#29

Post by asavage » 12 years ago

Knucklehead wrote:In all practicality it doesn't make any difference because, 1.) the tach, which does have a different part number than the Z tach, is $217 (the gas one is $229). Moot, because it is not available anywhere, at all. 2.) The sensor (pn 25068) is about $60. Rush to your dealer now, because there is one somewhere in the US. 3.) I can't imagine finding a 720 w/ SD25 in a junkyard, so I'm back where I started.

For motorheads, I did get a breakdown of where the sensor fit. Looks like it reads the cam gear, which I suppose has an inset on it. If anyone has one of these trucks, you have a jewel of high interest!

Image
More views of the same:
Image Image Image

The full part No. for the revolution sensor is 25068-54W01.
Regards,
Al S.

1982 Maxima diesel wagon, 2nd & 4th owner, 165k miles, rusty & burgundy/grey. Purchased 1996, SOLD 16Feb10
1983 Maxima diesel wagon, 199k miles, rusty, light yellow/light brown. SOLD 14Jul07
1981 720 SD22 (scrapped 04Sep07)
1983 Sentra CD17, 255k, bought 06Jul08, gave it away 22Jun10.

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philip
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Location: Southern California, USA

#30

Post by philip » 12 years ago

And for the 1981-82 dash console? No rush ... just curious for now. :wink:
-Philip
Passed 08May2008
My friend, you are missed . . .

1982 Datsun 720KC SD-22

"Im slow and I'm ahead of you"

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