RPM's at idle?

[Archer-Andy]

I was wondering if anyone knew how many RPM's these trucks turned at idle with the engine at normal operating temperature? I just installed a tachometer in my truck a couple of days ago and was trying to calibrate it. I know that most, if not all of these trucks did not come with a tach, so this question may be hard to answer. It is a 99' Suzuki with fuel injection.

[Dan]

not sure about yours but, my mitsu's spec at 900rpm for timing and is set to 6 degrees btdc.

[Archer-Andy]

Thanks Dan!

[Rickster]

Andy - Where did you get that tach for an EFI 3-cyl and how much did it cost you?

[slimbad]

Rickster, scroll down to post #6 in the following thread.

http://www.minitrucktalk.com/showthread.php?t=2486&highlight=tachometer

also, you can use search for "tachometer" and find more info......later, slim

[Rickster]

Under the driver's seat of my 02 Suzuki with a K6A engine it shows 950 rpms as Idle setting. I am still wondering what redline is on this engine.

[slimbad]

Rickster, are you heading out to the drags?? I can't answer your question about max rpm's -----take it out and see what it will wind out to----- not saying you got to blow it it up. But you shud be able to tell when it's maxin' out or near. Almost all of the NA 660's shud turn about the same rpm ---max HP is around 5000rpm --- will it tach more --of course....slim

[Rickster]

I am just curious to see the RPMs that my daughter is pulling when she forgets it is not an automatic tranny and leaves it in 1st gear! I think a tach would help me teach her how to drive it. I remember my first car was a 67 mustang my dad and I rebuilt top to bottom. It had a 6 banger and a 3 speed auto tranny in the middle. It had less than 2,000 miles on the breakin and my older sister drove it to another town and back (about 250 miles round trip). When she returned she said something was wrong with it because it would only run 65 MPH floored and was really loud. I rode with her and immediately noticed she was putting the shifter in 2nd instead of drive. I was upset, but end result was that it didn't hurt anything.

[Archer-Andy]

Rickster try this link. I bought the iequus tach for 3-12 cyl from O'Reily Autoparts for around $65-70 if I remember correctly.

http://www.minitrucktalk.com/showthread.php?t=1190

[Rickster]

Thanks for the direction. I actually just bought that exact tach in black bezel on e-bay for $11.00 new! It was the 3 3/8" backlit model so I think I can mount it on the post below the handle. Now I am just trying to find out which one of those sensors is my cam sensor. This tach has inductive pickup so I am going to try to drive it off the cam sensor, unless I can find a tach port on the ECU. Not much luck there without the manual for the 02 Carry.

[Mighty Milt]

i thought inductive had to go around a spark plug wire? :confused:

[Archer-Andy]

I think Milt is correct. An inductive pickup needs to be placed around a plug wire or coil wire in order to recieve the signal. Rick with your truck being a 02' model with coil on plug ignition or distributerless ignition, you will have to get signal from the camshaft sensor. If you have the same style tach that I do then it comes with both types of install hardware. You will not be using inductive pickup. You will be directly wiring into the Cam Position Sensor. The camshaft sensor is located under the passenger side of your truck. When you lift up your seat, you will see the valve cover, injector wires and where the plugs seated under the black cover. At the rear of the engine and closest to you above where the exhaust connects, you should see a grey plastic 90 degree looking electrical connector with three small wires coming out of it. That is the camshaft position sensor. One of those three wires with be carrying the signal you need to tie into. You will need to use a test light to see which wire you need by shoving a straight pin through the insulation of each wire and testing it while your truck is running. When you have located the correct wire, the test light should start blinking. Make sure to use a heat shrink waterproof type of connector to make your splice. There isn't a lot of room. You will need to cut back some of the plastic jacket that holds all of the wires together to expose more of the wire you need to splice into. If someone can do a better job of explaining this, please help out. I am not a mechanic per say. I just know enough to get into some major trouble.:frustration:

[Don-in-Japan]

Splicing into the signal wire may not be a great idea. Depending on the load the tach places on it. Some inductive pickups will pick up the signal thru a signal wire (as opposed to a ignition wire). Many coil pack Nissans have a 16 guage wire coming out of the ignitor module that the pickup gets looped around.

I've looked around online, but can't seem to find examples. Lots of dummies rigging up all kinds of adaptors to check timing, when all they have to do is find the right signal.

[Rickster]

Archer-Andy & Don-in-Japan

Thanks for the info, that is the best explanation I have found yet. I actually think my cam-sensor is on the front instead of rear on the passenger side. I will take a picture of it sometime and see what you guys think. The thing I am thinking about on the front is plastic, 90 degree bend, held in with one mounting bolt, and has three wires comming from the connector. I guess I will just have to play with it when I receive it and do what makes the most sense. It would be cool if the inductive pickup would work on those small wires. I am worried about pulling a drain on that sensor with tach hardwired to it. Anyone else have any ideas?

The best fit would be if someone finds a tach port or tach wire from the brain. That might be too much to ask though for with these trucks.

[Rickster]

Here are a couple of sensor pictures from under my passenger seat on my 02 Carry with a K6A engine. Do you think what I am calling a cam sensor and a temp sensor (sender) is correct? The reason I question this is that most people are saying their cam sensor is on the rear of the engine. That does not appear to be the case on mine.

[Mini4WD]

My Mits idles now at 1800 with the choke on and drops down to around 1200 after the choke opens. I guess I could turn it down a bit and get it to idle closer to the 900-950 RPM range but since it runs so well I'm not sure I want to screw with it. I have the factory tach in mine and it goes up to 8000 RPM's and redlines at 7000 RPM's. I do have the Supercharger 550cc engine, so I'm not sure if the NA 660 engines are the same.

[Don-in-Japan]

Can't say about the first pics.. kind of hard to put in perspective. The last pic looks like the sender for the temp guage on the dash. Easy enough to pull it off, and look at the guage to see if it drops below cold.