Search found 166 matches

by Stefan2000
Thu May 28, 2015 2:27 pm
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

I asked them and got a reply but they were not to cooperative answering the specific questions. They say it can overheat because of the housing itself also heats up in the engine bay... Well, ik would think that eventhough it's in the enginebay it would not exceed 100 degrees and it should still be ...
by Stefan2000
Thu May 28, 2015 7:58 am
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

Great! This is the answer from the manufacturer of the 123 ignition: Indeed if you mount a coil with less than 1 Ohm resistance the IGBT will get to hot and you will cook it together with a couple resistors (6x 1ohm parellel). Mounting a coil with lower resistance is not going to have a huge affect ...
by Stefan2000
Wed May 27, 2015 1:34 pm
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

It indeed seems to be the IGBT transistor that overloads with less than 1 Ohm coils. The 123 ignition for v8 applications can handle up to 0.6 Ohm coils but it has 2 IGBT's parralel. You kind of convinced (or made me convince myself) me to move over to a capacitive discharge system, also because tha...
by Stefan2000
Tue May 26, 2015 10:07 am
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

So if i want a safe system with a good coil able to create 45kV combined with dwell control, adjustable mapping and vacuum advance it would be best to hook my 123 ignition up to an MSD 6A. In this case the MSD and coil will create a good spark and my 123 will be used just for triggering. Also it wou...
by Stefan2000
Mon May 25, 2015 5:25 pm
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

Adrian, do you know what's the primary resistance of the bosch coil you mentioned? The bosch red coil (or beru bz109) has around 1.6Ohm and i've been reading at the 123ignition website not to use coils below 1 Ohm. It seems that below 1 Ohm the solder joints are the weakest point but it's just somet...
by Stefan2000
Thu May 21, 2015 3:31 pm
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

I'm quite sure it would have around the same amount of HP with the dinoplex system. But at least it shows that the 123ignition is not inferior quality and capable of doing the job unregardles of whatever output it creates. But i do admit that if the Original dinoplex creates 45kV and the 123 ignitio...
by Stefan2000
Thu May 21, 2015 10:19 am
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

I agree, the original system is probably as iconic as the rest of the engine and from a point of view of preserving cultural heritage it would be dishonoures to just replace it with something new. But knowing i have this piece of cultural heritage stored in a box in my bedroom ready to bolt on, i do...
by Stefan2000
Thu May 21, 2015 8:28 am
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

I just wanted to fiddle with the ignition curve and that is fully adjustable on the 123 ignition. Beside that it has vacuum advance which i think is a must have on all cars, than it also has variable dwell and so on + it was cheap and i like milling, turning and welding. And if it would not work as ...
by Stefan2000
Wed May 20, 2015 10:03 am
Forum: Technical Discussions
Topic: Fiat Dino Tacho
Replies: 31
Views: 35422

Re: Fiat Dino Tacho

Thanks Adrian, i will definitly try. If i use a potentiometer instead of a 47k resistor, am i able to finetune the reading on the tacho? What's the problem with the 123 ignition and red coil in your opinion? Is it the ignition itself or the coil output? And if it is the coil output can it be easily ...
by Stefan2000
Mon May 18, 2015 12:49 pm
Forum: Technical Discussions
Topic: alternative valve gear components
Replies: 6
Views: 4881

Re: alternative valve gear components

I assume that valve shims in general will meet all the necessary specifications like hardness, roughness and so on. Unregardless of weather they are on top or underneath the bucket. I think if you can find the correct size you will be fine. The top shims seems to be easely available because they are...