troyer coil packs
#11
12 Second Truck
All of the stories I read ended with guys getting fed up with failing coils and while they recieved replacements nder warranty they were sick of replacing coils. I was disappointed to say the least. But after researching this further I realized there was no benefit to the higher voltage. Get the spring replacement upgrade and you will be truly impressed at how smooth the truck is.
#14
12 Second Truck
#17
12 Second Truck
3. Gapping
Since the gap size has a direct affect on the spark plug's tip temperature
and on the voltage necessary to ionize (light) the air/fuel mixture, careful attention is required. While it is a popular misconception that plugs are pre-gapped from the factory, the fact remains that the gap must be adjusted for the vehicle that the spark plug is intended for. Those with modified engines must remember that a modified engine with higher compression or forced induction will typically require a smaller gap settings (to ensure ignitability
in these denser air/fuel mixtures). As a rule, the more power you are making, the smaller the gap you will need.
A spark plug's voltage requirement is directly proportionate to the gap size. The larger the gap, the more voltage is needed to bridge the gap. Most experienced tuners know that opening gaps up to present a larger spark to the air/fuel mixture maximizes burn efficiency. It is for this reason that most racers add high power ignition systems. The added power allows them to open the gap yet still provide a strong spark.
With this mind, many think the larger the gap the better. In fact, some aftermarket ignition systems boast that their systems can tolerate gaps that are extreme. Be wary of such claims. In most cases, the largest gap you can run may still be smaller than you think.
#18
Senior Member
iTrader: (1)
Hey blown, I was looking into the accel coils because their cheap for all 8... Do you think if I do the granatelli boot upgrade on these accel coils I can just change out to my working OEM coils once the accel's start failing? I'm looking to utilize these 0 ohm boots while keeping a cache of coils on the bench, for future repairs. Will the boots handle multiple COP head swaps?
#19
12 Second Truck
Yes they can be inserted and removed from the coils without any issue. There's really no way you can hurt them. It's a stainless steel rod wrapped in a stainless steel braid.
#20
Senior Member
Those are Granatelli (GMS) coils. Been researching these for a long time. And while I'm a loyal Troyer supporter everything I have found suggest steering clear of these coils. The failure rate is through the roof on them and the added voltage is useless. It sounds good but there is no benefit. If you are not suffering from spark blowout then the added voltage will not do you any good. Forced induction motors can experince spark blowout due to high cylinder pressures. However even at 13psi I have no issues and I'm running stock Motorcraft coils. Mustang guys running 20+ psi and nearly 1000hp are on stock coils. However I have performed the Granatelli upgrade. The upgrade piece is stainless cables wrapped around a 3/16 solid stainless steel core that measures -0- Ohm resistance per foot. That means all the coils power makes it to the plug and is not lost or inhibited. The improvment is enough that you can open the gap on your plugs by up to .10, I however only opened mine up to .037 verses the .030-.032 that I'm supposed to run. Normally this would cause a miss and spark blowout with my cylinder pressures. Below is a pic of the kit and a link to them on ebay. Very worthwhile upgrade. http://www.ebay.com/itm/Granatelli-H...sories&vxp=mtr
Even with a badass warranty, it isn't worth the downtime by having a misfiring engine.