Power Output

[Deus Ex]

Um the reason it cant be hooked up is because it sends a different magnatude of power to the tacho and it pretty much just sits at 9K (Or whatever the max is).

What was the work around you mentioned?

[Murph]

From jaycar:

STOCK-CODE: QM1442 - Limited

RRP: $49.95

Automotive Tahometer

* HANDHELD

* LARGE DIGITAL LCD READOUT

* INDUCTIVE PICKUP

* 1 TO 8 CYLINDERS

* 2 AND 4 STROKE

* DATAHOLD

This professional tachometer is handheld, wireless and easy to use._ It measures accurate RPM for 2 and 4 stroke engines with 1 to 8 cylinders using the Inductive Pickup. It features an easy opening inductive pickup, large LCD display, datahold and battery low indicator.

Specifications:

2000 count

RPM4: 600 - 2000 / 6,000 - 12,000 on X10

RPM2/DIS: 300 - 2000 / 3000 - 6,000 on X10

Accuracy: +/-2.0%+5digits

Dimensions: 185 x 58.5 x 76.5mm

Power: 9V battery

STOCK-CODE: QM1440

RRP: $78.95

Dwell Tacho DMM

- RPM X 1, X10

- DWELL ANGLE

- RESISTANCE

- DC VOLTS

- 15 AMP DC

- CONTINUITY BUZZER

- HOLSTER INCLUDED

- PROBE CLIPS INCLUDED

Features include a 3.5 digit LCD display with automatic zero adjustment, low battery warning and auto power off after 15 minutes. Includes dwell angle and RPM (x1, x10) for 4, 5, 6 and 8 cylinder engines. Comprehensive 15 page user guide describes how to: - Use dwell angle function - Adjust dwell angle - Dual point distributors - Test for dwell variation - Set idle speed and mixture setting- Adjust fast idle speed - Air fuel ratio test - Air filter test- Positive crankcase ventilator (PCV) test - Cylinder power balance test- Distributor centrifugal advance test - Heavy and light load battery test- Charging system test - Alternator output voltage - Generator output voltage- Cutout relay - Starter circuit - Alternator diode test - Condenser leakage test- Testing point resistance - Locating short in primary circuit.

Specifications:

- DC voltage: 200mV, 2V, 20V, 200V

- Base accuracy: ±0.8%

- Impedance: 10M

- Resistance: 200, 2K, 20K, 200K, 2M, 20M

- Base accuracy: ±1%

- Overload protection: 250VDC / AC RMS

- DC current: 200mA, 15A

- Base accuracy: ±1.2%

- Overload protection: Fuses 0.2A 250V, 20A 250V

- Tachometer: 0-10,000 RPM

- Base accuracy: ±2%

- Overload protection: 250VDC / AC RMS

- Dwell: 4 cylinder 0 - 90, 5 cylinder 0 - 72 6 cylinder 0 - 60, 8 cylinder 0 - 45

- Overload protection: 250VDC / AC RMS

- Duty cycle: 0.1 - 99.9 ±2%

- Test current: 1.0 ±0.6mA

- Test voltage: Approximately 2.4V

- Size: 165 x 78 x 45mm

Audible continuity beeper and diode test

Supplied with lead, rubber holster and comprehensive instructions

[Murph]

Or as another temporary measure:

STOCK-CODE: KC5290

RRP: $62.95

Digital Tachometer Display Kit for Cars

Refer: Silicon Chip April 2000.

Unlike its bulky predecessor from August 1991, this PIC based tachometer is housed neatly in a small jiffy box (83 x 54 x 31mm), which mounts nicely on your dashboard. Its amazing features include 4 digit LED display showing up to 9,900rpm in 100rpm increments, 10 LED bargraph with optional dot or bar mode (showing 8 independent rpm thresholds), calibration options for 1 - 12 cylinder 4-stroke or 1 - 6 cylinder 2-stroke engines, anti-display flickering feature and automatic night time display dimming. This kit can also be combined with our rev limiter KC-5265, to perform engine limiting.

Kit includes case with silk-screened panel, PCB¹s, pre-programmed PIC micro, 7 segment displays, red acrilic, hook-up wire and all electronic components.

[Brett240]

hey you guys are goin alright! im getting 200 kays out of a tank:disappoin

[Ben]

I get around 300-350 km out of a tank. Power output is sufficient to embarrass XR6 Turbo's.

The force-fed, but otherwise 100% stock L28E loses efficiency above about 5000rpm. My ported P90, forged pistons & 1-bar of boost will sort out that issue....

Oh, make sure you have your tach modified to suit the MSD output, or you'll fry it (I have a MSD-6A fitted to my car).

[Brett240]

Hi Ben,

just put an MSD 6A into mine on the wekeend. how do you modify the tach to make it work??

[Fun_in_my_z]

I will tell you how much power it makes. Plenty!

Remember when your dusting that porche or letting that ricer know whos the man, then you will know its not about power, its about pleasure!

Dont ask cuz yes im nutts!

[Deus Ex]

Well i had it tuned and put it on the dyno..115kw at the wheels, about 161rw Hp i think. Not bad, i had hoped for abit more, i didnt get to see the torque curve but im sure that would have been huge.

So basically im now looking for some easy mods for easy power, putting trumpets on my triple webbers will be the first, then i was thinking of re-grounding my cam to make it alittle mild.

Anyone have any other suggestions?

[Brett240]

tell us more about the engine combo, this is where the real power lies. standard L28 crank? what Rods are you using? what diameter are those pistons? Pin height?

has the head been shaved, ported? what head exactly is it? you said P40? are sure its not a P90?

how big is the cam you have at the moment?

[44014]

yes it is a p90 running a f54 block tripple 45mm webbers extractors i think its about 2 1/4 2 1/2 inch exaust on it standard crank running 200b flat top pistons other than that its a mystery matt just put a rb20 in it

cheers doug

[Ben]

Originally posted by Brett240

Hi Ben,

just put an MSD 6A into mine on the wekeend. how do you modify the tach to make it work??

I don't know the specifics, I just take the tacho into a gauge workshop & tell them to modify it to suit the square wave output of the MSD rpm signal.

~$100AUD later, it's done, calibrated & ready to use!

Had 2 of my 6-cyl tacho's done so far, one in my MR30 & the other my original 240Z unit.

[280zx Fever]

Originally posted by Deus Ex

It is a L28 with 200B flat top pistons and bored out to 2.9. It has a P40 head (US turbo unit i believe) and triple 35mm Webbers. I has a ground cam and flywheel (cam not that lumpy) mated to a FJ 20 5sp with a 2.5 system.

35mm webers ? or 35mm chokes ?

P40 head isnt the turbo unit.. p90 is the l28t head.