Instruments

[guy mayers]

Buy it now price of $350 is steep but when did you last see a set? The set includes an oil temperature gauge, speedo reads the correct 250kph and the rev counter is V6 already. Just need to find an ammeter.

Fiat Dino (http://cgi.ebay.com/ebaymotors/DINO-FIAT-2000-INSTRUMENTATION-COMPLETE-GAUGE_W0QQcmdZViewItemQQcategoryZ6763QQihZ020QQite mZ300058041121QQrdZ1)

Guy

[AndyH]

Hi,

This time yesterday I thought I'd need a rev counter... I bought a set from you a few years ago and had the rev counter converted to V6.. My car is away being sprayed and I've stored various bits and pieces in the house for safe keeping..

I stupidly put the dash and instruments on top of some sweets.

Kids duly took the dash off and placed it on the ground to access sweets, then I suspect turned around and stood on the dash..

Rev Counter casing broken in a number of places..

A few hours and some araldite, and it's back together.. still to prove it still actually works though..

Kids... don't you just love them !

Andrew

[Patriq Backlund]

Hi !

Seems like you are familiar with the setup of these... ?

Does the speedo just connect to the sensor in the gearbox - and reads correctly as is ?
Why would the rev-meter be V6 compliant. The "rev-sensor" measures engine cycles, doesn't it ? Then number of cylinders shouldn't matter ?

Newbie questions, as you can see...

[Chris J]

The set includes an oil temperature gauge, speedo reads the correct 250kph and the rev counter is V6 already.

Guy,

That's a point? If you were planning to use a Veglia rev counter on a V6, is there any advantage with it previously being fitted to a Dino (V6) rather than a 124?

[mudhut]

If you have an electrical tachometer (as most have been for quite a long time), it counts pulses from the ignition system to determine crankshaft speed. The number of cylinders therefore has an effect on the number of pulses received per crankshaft revolution.

A typical four cylinder engine will produce four pulses per two crank revolutions, while a six cylinder engine will produce six. So a tachometer designed to work on a four cylinder engine will indicate on and a half times the rpm when fitted to a six cylinder engine.

The 4-cylinder tachometer is converted by in effect dividing the number of pulses by 1.5.

I hope this makes sense - it did when I wrote it!

[Chris J]

[QUOTE=mudhut]The 4-cylinder tachometer is converted by in effect dividing the number of pulses by 1.5.QUOTE]

That does make sense Peter, thanks, but what do you actually physically do to divide it by 1.5?

[strat6v]

Post it to Chris Savage. :)

[mudhut]

Not sure how it was done in the past - CorseChris would be your man here.

One strategy might be to drop every third pulse but without knowing exactly what goes on inside the tacho electronically, I don't know whether the irregular pulses would cause a problem with the steadiness of the needle.

Chris is much more expert in this stuff and probably did the job in a much more elegant way!

[chris.richard]

Post it to Chris Savage. :)

:D :D

Soldering, crimping and sleeving wires. Think this smoke thing is a myth.

Pride, fall, before...... :p

[guy mayers]

Hi !

Seems like you are familiar with the setup of these... ?

Does the speedo just connect to the sensor in the gearbox - and reads correctly as is ?

Newbie questions, as you can see...

You can go the route of cannibalising the guts from an Alfa or Thema speedo head and make them fit into the Fiat speedo but it's really easier to unbolt the gearbox sender and fit a cable drive...... :D :D :D

Guy

[Patriq Backlund]

Guy !

Oh, so you meen that this speedo is a cable drive, not electrical ?
I've never really unbolted a cable driven one. Can I just unbold the sender from my Alfa gearbox and fit a cable to the slot somehow where the sender was ?
Or does it hook up somewhere clompletely elsewhere ?

But the tachometer is electrical, and would fit the the Alfa engine as is ?

I'm planning to build my third programmable ECU (MegaSquirt off course) - and also run ignition eventually. Would I then need to keep the distributor just for the rev's ? I can't seem to remember my GTV6 having the tachometer connected to the distributor. And it esentially has the same engine (3.0 from a 75).

Thanks for helping out a happy newbie !

[chris.richard]

Hmm, bit out of my depth here, but I'll try.
If you unscrew the sender unit on the Alfa differential, ,the cable that Hawk supplies will screw right on in it's place.
I presume that there will be an output from the megasquirt for a tacho, and that would be the input to the Veglia tacho, which would need to be modified to understand 6-cylinder signals. Chris Savage used to provide this service, but he no longer takes part in this forum. I suspect that there must be other boffins about that can invent/attach the necessary circuitry.

[Patriq Backlund]

Hmm, bit out of my depth here, but I'll try.
If you unscrew the sender unit on the Alfa differential, ,the cable that Hawk supplies will screw right on in it's place.
I presume that there will be an output from the megasquirt for a tacho, and that would be the input to the Veglia tacho, which would need to be modified to understand 6-cylinder signals. Chris Savage used to provide this service, but he no longer takes part in this forum. I suspect that there must be other boffins about that can invent/attach the necessary circuitry.

Hi Chris !

Thanks !

Ok, that meens that I can use the speedo meter as is, directly on my donator 164 gearbox.

But with this FIAT "kit", can I also directly plug the tacho' to the original distributor on the Alfa V6, and the reading is correct ? (If I don't use Megasquirt for ignition - only fuel).

A little besides but; on my GTV6 I have a 3.0 gearbox - and for the speedo to read correctly, I have a little box built by the previous owner that sits between the sensor on the gearbox and the Veglia instrument in the dash. It does 'something' to the signal.

[chris.richard]

But with this FIAT "kit", can I also directly plug the tacho' to the original distributor on the Alfa V6, and the reading is correct ? (If I don't use Megasquirt for ignition - only fuel).
Don't know - my Alfa engine doesn't have a distributor. Roger Donnan added a distributor to his 24v - he will know how to make the tacho work.

A little besides but; on my GTV6 I have a 3.0 gearbox - and for the speedo to read correctly, I have a little box built by the previous owner that sits between the sensor on the gearbox and the Veglia instrument in the dash. It does 'something' to the signal.
That's for an electronic speedo. you need to remove the unit on the transmission that converts the shaft output to an electrical signal. The Stratos style Veglia speedos are mechanical.

[Patriq Backlund]

Don't know - my Alfa engine doesn't have a distributor. Roger Donnan added a distributor to his 24v - he will know how to make the tacho work.


That's for an electronic speedo. you need to remove the unit on the transmission that converts the shaft output to an electrical signal. The Stratos style Veglia speedos are mechanical.

Ok,
but then what kind of tachometer do you have ? How is it connected ?

Anybody else who knows if this tacho will fit a 12V V6 ?

[strat6v]

As stated before, the tacho will need a modification to read correctly on a v6, be it dizi or ecu pulse.

[chris.richard]

Mine is a Veglia one from a 1970s Fiat. Works fine from teh ECU with a Corse Chris modification.

[chris.richard]

Some more insight here
previous thread (http://www.stratossupersite.com/forum/showthread.php?t=2336&highlight=pull+resistor)

[Patriq Backlund]

As stated before, the tacho will need a modification to read correctly on a v6, be it dizi or ecu pulse.

Ok.
That's what I wanted sorted out. I thought the fact that the tacho from this FIAT that was a V6 car, eliminated the need for a modification. At least it seemed that way in the initial post.

But then one could just as well buy a tacho from any car - be it 4 or 6 cyl engine and modify it.

[Patriq Backlund]

Some more insight here
previous thread (http://www.stratossupersite.com/forum/showthread.php?t=2336&highlight=pull+resistor)

Thanks !

Then I might use impulses from the ECU and do a modification to the signal so the Tacho reads correctly. (Unless this tacho from the FIAT V6 turns out to read correctly when fitted to a Alfa V6, and I would buy it to save me trouble with modification).

The reading in the other thread was helpful.

Regards,

[chris.richard]

I would guess that the number of pulses will not need to be modified because the tacho comes from a 6-cylinder, but whether they are of the right configuration is unknown until you try it (are there different sort of signals, or is there an industry "standard" tacho pulse?)

[Patriq Backlund]

Good point !

Guess I'll just have to try.

[Patriq Backlund]

Well, auction has ended. I wasn't paying attention to when it ended. I'll just have to keep on looking.....

:-)

[chris.richard]

Couple here:
oil pressure (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=004&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=140063133196&rd=1&rd=1)

water temperature (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=004&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=140063132187&rd=1&rd=1)

[Patriq Backlund]

Only problem - I don't want to use e-bay. I used it earlier - and was accused of the seller of an item I bid on, for retracting bids - and obstructing his auction.

I hade proof that I hadn't, which I sent to him - and he insisted on me being dishonest. I pointed this out to e-bay and asked them to remove his comments from my profil - since I didn't want his comments hanging on for future business. They just answered that they couldn't take side in our disagreement, and let his comment stand.

I then asked my profile to be erased - and haven't used e-bay since. I don't want to do business under such circumstances.

Anyone else had similar experiences ?

[Patriq Backlund]

Couple here:
oil pressure (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=004&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=140063133196&rd=1&rd=1)

water temperature (http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=004&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=140063132187&rd=1&rd=1)

Thanks !

Do you somehow monitor keywords so that you get an alert when new interesting adds show up ?

Regards,

[chris.richard]

Once you've done a search , you can save it in "my favourite searches", which you can then access from "my ebay". You can set it up to send you emails when something comes up, which is fine for a specific search, but not so good for a general one. I searched for "Fiat 124" which produce 100 or so hits, then browse through.