If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Spark Plugs: Champion vs. Unison
I've Googled for this and poked around other places, but there doesn't
seem to be much comparison data on these two products. I've always used Champion plugs (massive electrode), but now that my plugs are fairly worn and I'm in the market again, I'm curious about opinions on the Unison Autolite plugs. They are $5 cheaper per plug. I will pay the extra $5 per plug if the Champions are better plugs, but I have no personal experience with the Autolites. Any advice? Thanks, JKG |
#2
|
|||
|
|||
"Jonathan Goodish" wrote in message ... I've Googled for this and poked around other places, but there doesn't seem to be much comparison data on these two products. I've always used Champion plugs (massive electrode), but now that my plugs are fairly worn and I'm in the market again, I'm curious about opinions on the Unison Autolite plugs. They are $5 cheaper per plug. I will pay the extra $5 per plug if the Champions are better plugs, but I have no personal experience with the Autolites. Any advice? Thanks, JKG I have used both and can tell no difference. |
#3
|
|||
|
|||
A friend of mine switched to Autolites on his Mooney. He then
discovered that the deep socket he used on his Champions wasn't quite deep enough for the Autolites. Had to get a new socket, specialty item, wiping out much of the savings. In terms of how they work - no discernible difference. Michael |
#4
|
|||
|
|||
"Michael" wrote in message ups.com... A friend of mine switched to Autolites on his Mooney. He then discovered that the deep socket he used on his Champions wasn't quite deep enough for the Autolites. Had to get a new socket, specialty item, wiping out much of the savings. In terms of how they work - no discernible difference. Michael My deep socket works on both brands. It is an off the shelf socket from the local farm store that cost at most $7.00. |
#5
|
|||
|
|||
I used to use the champions on my tiger for a number of years and also
bought and used a few sets of champions brand new. Always had problems with fouling. Last time I bought plugs I went with Autolites and so far after at least 75 hours and at least a year and a half they haven't fouled once ... Jon "Jonathan Goodish" wrote in message ... I've Googled for this and poked around other places, but there doesn't seem to be much comparison data on these two products. I've always used Champion plugs (massive electrode), but now that my plugs are fairly worn and I'm in the market again, I'm curious about opinions on the Unison Autolite plugs. They are $5 cheaper per plug. I will pay the extra $5 per plug if the Champions are better plugs, but I have no personal experience with the Autolites. Any advice? Thanks, JKG |
#6
|
|||
|
|||
"Dave Stadt" wrote in message ... "Michael" wrote in message ups.com... A friend of mine switched to Autolites on his Mooney. He then discovered that the deep socket he used on his Champions wasn't quite deep enough for the Autolites. Had to get a new socket, specialty item, wiping out much of the savings. In terms of how they work - no discernible difference. Michael My deep socket works on both brands. It is an off the shelf socket from the local farm store that cost at most $7.00. Yeah, I needed a spark plug socket immediately one night and couldn't find it in the socket section of the auto parts store-- but further down the isle I found an "Oxygen Sensor Socket"! It's 7/8, extra deep, and has a slot up the side that allows you to easily use it on the "cable cap nut" too... -- Cheers, John Clonts Temple, Texas N7NZ |
#7
|
|||
|
|||
When Auburn plugs were available we used to use them
exclusively. They lasted much longer than the Champs. Then Champion bought them up and shut them down. We'd formerly had a lot of trouble with Champions failing the testing at 50 or 100 hours, and it seemed to be the spring-loaded internal resistor that somehow lost its contact, even though I could see nothing wrong with it in any plug that wouldn't spark. I'd even had Champions failing right out of the box. We started using the Unisons when they came out. They had the same monolithic (molded-in) resistor the Auburns had used, and worked well. In the last year we've had trouble with them misfiring, and on the test stand they will arc in the cigarette barrel; the spark would rather jump from the contact button to the shell rather than across the gap at 120 psi. I think it's another resistor problem. Misfiring plugs aren't always readily apparent. You might feel the slightest bit of roughness, usually in climb or leaned cruise, and if the mags aren't timed exactly together. As the earlier plug fires and the cylinder pressures start to rise, the other can't or won't fire and you have a slower burn in that cylinder. Switching from BOTH to LEFT or RIGHT won't detect anything. We're using both Champs and Unisons right now to see what the eventual outcome might be. Dan |
#8
|
|||
|
|||
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Unison spark plugs | Ed Sullivan | Home Built | 3 | April 21st 05 02:10 PM |
Owner Change/rotate spark plugs? | Victor J. Osborne, Jr. | Owning | 34 | February 25th 05 07:19 PM |
Bougies blindées BG à vendre/BG spark plugs for sale | stef | General Aviation | 0 | May 14th 04 04:57 PM |
Color of spark plugs | john smith | Owning | 5 | March 2nd 04 03:08 AM |
Spark plugs for ASH26E | Ludovic Launer | Soaring | 4 | February 3rd 04 07:56 PM |