dyna coils/leads

[hiroz]

hi guys, im ready to fit dyna coils to my z9a4 can any one advise me on the best leads to fit as the connections to the coils are not the usual screw type, i would like to retain the standard period type plug capsso how do the normal leads fit into the coils ? or am i better with the dyna lead set.

[Pigford]

Hiroz, you're best with proper Dyna or Taylor leads.... as you've got decent coils, its best to run decent leads.
You could cut the HT caps off the leads & use the NGK type caps
You can get Black Dyna leads that don't stand out too much

[Jon]

I agree Taylor leads are fantastic. Dyna coils n taylor leads are a good combination. Fitted em to my Harris years back n cured a lot of problems. Not had a problem since. Nice fat spark.

[Ed Z1-R]

International budget HT leads utopia

[Keefleaf]

Some years ago I was in the process of fitting Taylor/silcone leads,when,
a friend,Dave Buzzard Ennis,{aircraft electro person},Z1b drag queen,
showed me the differance.He measured resistance on silicone lead and then same on cheeper,copper leads.The silicone leads lost out big time?
They look good but are less effective,robbing spark.Not to bad for street,
not so good for tuned motors.
If enough people hassle him he might start making wiring looms again.

[kermit]

Give me his number please I will hassle him

[debben1]

A couple of years ago I was at Dynateks huge facility in California and Scott Valentine of Dynatek gave me the grand tour. He showed me a test bench which replicated an engine enviroment and the spark energy could be measured , the compression could also be increased in the engine to extreme levels until the spark "blew out" apart from testing supsect units this testing also allowed them to develop there product to acheive provern results. I cant see them spending thousands of dollars to develop ignition systems, dataloggers and ignition coils (35,000 v) and then throwing this development away by using substandard leads, Dynatek avoid using copper core leads, and I have to assume this is for a very good reason. I do remeber that we had some problems with Taylor wires because of the radio noise they transmitted interferred with a Dyna Pro 4000 dataloggers, Scott told us to replace the leads with the DW800 Dyna leads and the problem was resolved. Regards, Steve

[cra-z1]

Doesn't it depend upon the ignition system used. I think with the prgramable units they recommend non-copper core wires. If your using the system that just replaces the points and is not prgramable don't the recommend copper core wires.

[debben1]

I will email Scott @ Dynatek in the week and get this query answered

[Keefleaf]

Get an Electrcian to measure the resistance"before your very eyes"
Copper core/Silicone lead.
Also remember big buisness is Big Bucks$$$$$$
best of luck

[debben1]

quote;
Plug lead construction has changed significantly over the years. In the 60's and 70's the high performance lead was copper cored and with an externally mounted suppressor (copper has poor supression qualities).
Unfortunatly copper also has poor heat resistance and the leads can melt. To overcome these problems the carbon core lead come into wider use, it has good supression qualities but still has poor heat resistance and is subject to internal break down after as little as 18 months use. More recently the silicon lead has come to the fore, offering good performance allied with excellent heat resistance and long life.
end quote
Regards, Steve

[buzzard]

i use copper core silicon leads/rubber plug caps in my ignition set up(Taylor leads), this has no suppression at all so it will interfer with any sensitive electrical equipment. You can shield this by using metal braid cover over relevent loom(learnt this in aircraft industry)and earthing/decoupling using capacitors. Each end has to be crimped but then you should also solder the ends as well, should get a ohmic reading on each lead of less than 1ohm,no resistance ,nice big fat spark when used with compertition coil/distributor set up. Silicon leads with carbon core have ohmic readings into the megohms which is massive resistance, less spark and they will break down eventually. BUZZARD

[debben1]

Hello Buzzard, good to hear from you, I remeber your bikes from the Superbike magazine years ago The carbon leads where also prone to breaking if bent round tight bends, do not se to many carbon leads on the market now, I know yearsd ago we used to get misfire problems on the Dyno which where often down to the carbon core leads. We have been using Dyna leads for quite a while now and had no problems, The only problem we have noticed with the Taylor wires was tha plug cap connector could become loose and would need pinching up once in a while to ensure a firm grip on the plug nipple, probably down to age and many plug cap removals and refits. Will you be out racing again soon, would be great to get another Z out on the track, Best Regards, Steve