They are like a flash, too fast. You want a longer burn. http://www.ferrarichat.com/forum/showthread.php?p=136454570#post136454570
From the reading mentioned, I'm not sure that a flash is a bad thing.... The articles quoted in the thread mentioned above are from the site directhits.com This company has been building an aftermarket bolt-on device that moves a capacitor closer to the plug thereby increasing transfer efficiency. The Pulstar plug is an offshoot of this technology where they move the capacitor right into the plug. Pulstar is derived from the directhits web site (it is referenced on the Pulstar site). The heritage for this technology comes from Sandia National Labs (good group). As I understand it, most of the energy in conventional ignition systems (the 308 carb qualifies) is lost in the resistance from the primary coil side all the way through to the wire and plug delivery. There is so much build up and then a soft dump of charge at the plug tip. This is called low transfer efficiency because the energy is there, but lost along the way. This Pulstar generates a flash by storing up the energy, waiting, and then delivering it in a really fast burst (nanoseconds vs. microseconds) but what Im reading says that flash is good because it ignites the mixture faster and more consistently. They have a little video showing a spherical combustion photo from a standard plug and the Pulstar. The Pulstar plug shows a sphere propagating to a larger diameter in the same amount of time This would lead to their claims of better cold starting (super high energy to ignite a mixture when the head is cold), more consistent (minimal bad sparks because the spark is so powerful from cycle to cycle. They say that this will help fuel efficiency because of better burns from cycle to cycle (not as much wasted fuel going out the tailpipe) All I want to know is Will these things help my 308 start better when cold and generally run better simply by putting $200 worth of plugs in. Not a bad investment without dinking around with coils and wires and/or putting electronic ignition in. Most importantly, will they hurt her. -Rjay
They're just spark plugs. In their worst case they aren't going to hurt anything anymore than a plug that's too cold, too hot, or fouled. So give 'em a try. Maybe you are right. They may be great for cold starts. My comments were more directed toward power rather than cold starting.
No Doubt, Thanks for your thoughts...you're the only one so far! Usually, folks come out all over. I would have thought that since these plugs are new and I didn't see a thread on them, that someone else woud have said something. Anyone else...anyone? -Rjay
Ive been wondering about them too. I wonder if the more powerful pulse will have any negative effect on the piston rings etc?
I brought this same question up about a month ago and not much response I think they are a bit to new so no one has any experience with them or they think they are like other cheaper versions out there. I to am interested but like everyone else I will wait for the verdict from someone else first, maybe you? Image Unavailable, Please Login
ITs only 100 for my 4runner. I need everything I can get with that lttle 4 banger in there and they seem to provide enough hp, torque, and added mpg to be worth it....
I'm a big fan of MSD ignitions. Just about every racecar has one and I've seen a lot of people put them in older cars as well with great improvments. MSD stands for Multi Spark Distributor. Instead of one spark it continues to spark through 15 degrees of crank rotation. I don't see as much need in the newer cars that already have pretty hot sparks but if you want your 65 GTO to start much easier and idle better it's a great improvment. I think I would do something like this instead if you think there is a problem with stock. But just to be fair, full disclosure, I know nothing about these plugs. All information deemed reliable but not gauranteed.
i thought it was Multiple Spark Discharge? (MSD?) i have installed dual Crane xr3000 ignitions in 2 carb 308's so far. with these plugs i would bet there would be some improvement. given the higher prices of fuel, they may be worth it. i guess someone will have to try them and post. perhaps i will if i ever get another car Italian car.
I guess I am hard pressed to spend $25 per plug. I saw the add and thought that they would be some improvement but not enough to warrant the cost. I have a set of NGK BP5ES plugs in my 77 since 2000 and they seem to fit the bill. So lets see if someone gets them and what the results are.
You're probably right, memory isn't what it used to be but I think I had the basic idea correct? The idea being instead of one spark you get a bunch of real hot sparks. If the first spark fails to igniite one of the others will. Like I said you'll see an MSD or similar clone product on almost all racecars that are allowed to put them on. If you do put one on make sure you read the instructions carefully and not run the pair of wires coming from the distributor(s) in the same loom as the ones going back to the coil. Separate them by a few inches and do not run them through the same hole in the firewall etc. On our American V8's we run only one pair down one side of the intake and since we mount the MSD inside the car we run the wires through two separate holes in the firewall. Car seemed to run OK when we had them bundled together but you could tell the difference at high end on the dyno.
Nice to see all the activity. I posted this in June of last year- whoa, thats the longest for me. You guys musta been sleepin' Rjay
Yes . Car runs well. I will pull them when I do belts this year and most likely buy a new set. They looked great at the last belt change 3 1/2 years ago so I left them in. Car runs strong and idles dead on at 1000rpm. Pulls through all of the gears and runs well even when I criuse at 40 mph in 5th. I'll end up doing wires also. I picked up a set of Kingsborne on ebay and will replace both extenders and wires. My extenders are 1977 vintage. I hand made a set of wires using wire I bought on a roll from NAPA. That was back in 2000 also. With my extenders the wires screw into the ends , they don't snap in like the newer types. Enjoy.
NGK BP5ES here as well, but with the rise of ethanol laced fuel I am changing them ALL THE TIME!!!!! That stuff is softening 30 years of fuel varnish in the tank and lines, IMO. I ran MSDs for awhile but we found it was actually just covering for substandard distributor performance. Once we rebuilt them it was not required, the 1977 308GTB ran fine. So we took it off.
Steve, I have cracked well seals, when I pull mine they look as if they have been running in a boat......offshore! LOL! Gotta get some seals from Daniel......
So imagine my surprise... I got an email back on 1/22/08 by a Kyle Jones, customer service at Enerpulse, Inc. He emailed me through Fchat. Wanted to know if id try a set of thier Pulseplugs. Sent him the info he needed, address, etc... Im thinking yeah right, I never get anything free, never won anything either. Well, darned if UPS didnt drop them at the door the other day. I hope this Kyle guy knows I have my car all in pieces right now. But i'll try them. Maybe even try them in something else until ol Betsy's running, I guess anything that runs a BP5 or 6 ES should work. But its kinda odd, it says on cars with ECU's to allow a tank or two of fuel for the computer to relearn?? Strange. I'll keep ya'll posted about them, we'll see what they do.
