KymcoForum.com
Scooters - 50cc => Agility 50 => Topic started by: OregonDad on April 27, 2012, 09:02:04 PM
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How large of a gap do I set on a NGK (7544) CR7HIX Iridium IX Spark Plug for a 2008 Agility 50?
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You don't, iridium spark plugs do not require setting the gap, just install as is.
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...really??
...anybody verify that?
???
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Maybe what was meant was Iridium plugs come pre-set and pre-gapped and doesn't need setting or re-gapping especially on stock engines. But it won't hurt if you check the gap of newly bought plugs. There might be some bad ones that come out the factory. However, when modifying an high performance engine, you may re-gap depending on your engine's needs.
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..in my experience, i have not seen significant performance increase with iridium, an any 4t i tried them in, but then, i've only tried a cpl different heat ranges with my setups...
..always been able to get real good performance without them, i reckon.,...
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The fine wire electrodes are VERY easily damaged , it is not recommended to gap them . I have even been told thay if you try to gap them they will be ruined . Good luck .
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The fine wire electrodes are VERY easily damaged
....makes sense.....
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I do know they recommend no gapping. BUT... If it is banged in shipping they are set to .7mm or .028". I have opened standard plugs to 3/16" using 60,000 volt coils so it is relative. You should Always use a brass feeler gauge when setting Iridium plugs as the wire type or the Stainless type can bend the fine tip.
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should Always use a brass feeler gauge when setting Iridium plugs as the wire type or the Stainless type can bend the fine tip.
..makes sense......
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Maybe what was meant was Iridium plugs come pre-set and pre-gapped and doesn't need setting or re-gapping especially on stock engines. But it won't hurt if you check the gap of newly bought plugs. There might be some bad ones that come out the factory. However, when modifying an high performance engine, you may re-gap depending on your engine's needs.
Correct.
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..in my experience, i have not seen significant performance increase with iridium, an any 4t i tried them in, but then, i've only tried a cpl different heat ranges with my setups...
..always been able to get real good performance without them, i reckon.,...
copper = lasts long
platinum = lasts longer
iridium = lasts even longer
So, the better the metal, the longer it lasts. Performance are the same. ;)
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Performance is also improved . bikeadvice.in/iridium-spark-plugs/ .
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If its not damaged in shipping, i wouln't consider gabbing it, as iridium is very durable and will last so long, that buying a new one wont kill your purse, as they last 3 times as long, but only costs the double. ;)
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I recap all my plugs ha never know. .7 to .8mm sometimes .71/2
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Performance is also improved . bikeadvice.in/iridium-spark-plugs/ .
According to that article I should also get a high energy ignition coil/wire/plug cap to improve starting, acceleration, and fuel mileage.
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Dont always trust in what you read.
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According to that article I should also get a high energy ignition coil/wire/plug cap to improve starting, acceleration, and fuel mileage.
That is the very first thing you should do. I see it as a "given". You have to have at least 35,000 volts to get complete combustion. Most if not all OEM 50cc coils are 6,000v. Get one of the orange "performance" coils on ebay, or partsforscooters. You will get better performance /mileage. I am setting up an MSD battery driven CDI, and an Accel coil made for a 2012 jeep. That will be a stable 60,000 volts from start up to 16,000 rpm. Fire is the trigger.
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That is the very first thing you should do. I see it as a "given". You have to have at least 35,000 volts to get complete combustion. Most if not all OEM 50cc coils are 6,000v. Get one of the orange "performance" coils on ebay, or partsforscooters. You will get better performance /mileage. I am setting up an MSD battery driven CDI, and an Accel coil made for a 2012 jeep. That will be a stable 60,000 volts from start up to 16,000 rpm. Fire is the trigger.
As far as i was told, the standart kymco coil was 16000 volts.
Naraku is one of the very experienced and trusted producents of tuning parts for 4-stroke GY6 engines, and their orange performance coil (i wonder why all of them are orange, no matter who makes them) are 31000 volts, so i would suspect, that no higher than that would be necersary. :)
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"As far as i was told, the standart kymco coil was 16000 volts."
Forgot the one (1) 16,000v. Still half the power, and MUCH weaker spark under compression. You want the spark to jump at LEAST 1/4" with the plug outside the engine.
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"As far as i was told, the standart kymco coil was 16000 volts."
Forgot the one (1) 16,000v. Still half the power, and MUCH weaker spark under compression. You want the spark to jump at LEAST 1/4" with the plug outside the engine.
How much is that?
A quarter inch? :)
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One quarter inch. http://www.toolfetch.com/Category/Automotive/Spark_Testers/THE404.htm (http://www.toolfetch.com/Category/Automotive/Spark_Testers/THE404.htm) This is the tester I use to trouble shoot. If I cannot get a 1/4" gap to jump I KNOW it will be an Ign related running problem.
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One quarter inch. http://www.toolfetch.com/Category/Automotive/Spark_Testers/THE404.htm (http://www.toolfetch.com/Category/Automotive/Spark_Testers/THE404.htm) This is the tester I use to trouble shoot. If I cannot get a 1/4" gap to jump I KNOW it will be an Ign related running problem.
I ment more like, what is it in centimeters, but i found out now. :D
Its only a little more than 0,6, so any coil should be able to do that. :)
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Any Good coil. Compression increases the air resistance inside the Cyl. I don't know the formula but I do know you have to jump 1/4" to get spark under compression. Even erratic spark at 1/4" will not fire in the cylinder under compression. At 60,000 volts you don't even need an electrode. It will jump to ground. http://compare.ebay.com/like/390407578892?var=lv<yp=AllFixedPriceItemTypes&var=sbar (http://compare.ebay.com/like/390407578892?var=lv<yp=AllFixedPriceItemTypes&var=sbar) That is the OEM plug for a 60,000 volt marine 2t engine (out board)
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Any Good coil. Compression increases the air resistance inside the Cyl. I don't know the formula but I do know you have to jump 1/4" to get spark under compression. Even erratic spark at 1/4" will not fire in the cylinder under compression. At 60,000 volts you don't even need an electrode. It will jump to ground. http://compare.ebay.com/like/390407578892?var=lv<yp=AllFixedPriceItemTypes&var=sbar (http://compare.ebay.com/like/390407578892?var=lv<yp=AllFixedPriceItemTypes&var=sbar) That is the OEM plug for a 60,000 volt marine 2t engine (out board)
Awesome! I didn't know that ;)
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You want the spark to jump at LEAST 1/4" with the plug outside the engine.
..wowww....
:o
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Now...do you need iridium?
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Nobody NEEDS iridium . It's more a question of do you want to pay the extra couple of dollars for the improved performance , easier starting , and longevity .
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Nobody NEEDS iridium . It's more a question of do you want to pay the extra couple of dollars for the improved performance , easier starting , and longevity .
Right!
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I think it was put up at 0.6mm before but 1/4"=6.35mm.
I used a 125 gy6 stator, and This cdi/coil. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=160781981964&view=all&tid=744122197006 (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=160781981964&view=all&tid=744122197006)
It jumps about .75" It's not powerful (I got lit up a few times setting it up) but it jumps. The kick start never fired it so never worked. One kick now, maybe two when cold. This is all on that gy6 engine...
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Like this coil? http://www.ebay.com/itm/HIGH-PERFORMANCE-SCOOTER-IGNITION-COIL-GY6-50cc-150cc-/270544437980 (http://www.ebay.com/itm/HIGH-PERFORMANCE-SCOOTER-IGNITION-COIL-GY6-50cc-150cc-/270544437980)
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I think it was put up at 0.6mm before but 1/4"=6.35mm.
I used a 125 gy6 stator, and This cdi/coil. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=160781981964&view=all&tid=744122197006 (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=160781981964&view=all&tid=744122197006)
It jumps about .75" It's not powerful (I got lit up a few times setting it up) but it jumps. The kick start never fired it so never worked. One kick now, maybe two when cold. This is all on that gy6 engine...
I wrote 0,6 cm, not millimeters. :)
I know its really 0,635, but because of the variables like moisture and air pressure, i just rounded the number. :D
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Metric is not my strong suit. Gotcha tho Bro!
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Like this coil? http://www.ebay.com/itm/HIGH-PERFORMANCE-SCOOTER-IGNITION-COIL-GY6-50cc-150cc-/270544437980 (http://www.ebay.com/itm/HIGH-PERFORMANCE-SCOOTER-IGNITION-COIL-GY6-50cc-150cc-/270544437980)
That's the one. My link messed up. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&&item=160781981964&view=all&tid=744122197006&guest=1 (http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&&item=160781981964&view=all&tid=744122197006&guest=1)
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For 10.00 more bucks you get the cdi too.
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For 10.00 more bucks you get the cdi too.
What does that CDI do that a notched OEM CDI won't?
Remember, top speed is not our goal, but power to maintain 30mph while climbing hills is. In fact I really don't want the scoot to go over 39mph because it is only licensed for a top speed of 30mph.
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The link failed again. Shennagins!
Those race cdi's supposedly have different ign. timing to create more torque/hp. Some do, and some dont. I just bought it so I have a spare for ten dollars. The one I was using is simply sold on ebay as de restricted. That was 14-15 bucks. I'll get the proper links. So for 25.00 I have two working CDI's a Good coil on the scoot, and a spare coil. Just the piece of mind is worth that.
The coil /cdi won't make the scoot go 50mph but they will allow it to if you change other things.
http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr (http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr)
http://www.ebay.com/itm/No-REV-Limit-Performance-CDI-Racing-CDI-Gy6-Based-Eng-/230392879012?pt=Motorcycles_Parts_Accessories&hash=item35a47c57a4&vxp=mtr (http://www.ebay.com/itm/No-REV-Limit-Performance-CDI-Racing-CDI-Gy6-Based-Eng-/230392879012?pt=Motorcycles_Parts_Accessories&hash=item35a47c57a4&vxp=mtr)
Both US sellers, and 3-4 days delivery
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Is this the link you were looking for? http://www.ebay.com/itm/Performance-racing-ignition-CDI-coil-GY6-scooter-moped-gy6-50-150-package-deal-/270913392373?pt=Other_Vehicle_Parts&hash=item3f13b24ef5 (http://www.ebay.com/itm/Performance-racing-ignition-CDI-coil-GY6-scooter-moped-gy6-50-150-package-deal-/270913392373?pt=Other_Vehicle_Parts&hash=item3f13b24ef5)
Looks like Scrappy has the coil alone for $1 less here http://www.ebay.com/itm/Coil-racing-high-performance-gy6-Baja-Tank-Sunl-Roketa-VIP-50-150-moped-/270913402577?pt=Other_Vehicle_Parts&hash=item3f13b276d1 (http://www.ebay.com/itm/Coil-racing-high-performance-gy6-Baja-Tank-Sunl-Roketa-VIP-50-150-moped-/270913402577?pt=Other_Vehicle_Parts&hash=item3f13b276d1)
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The link failed again. Shennagins!
Those race cdi's supposedly have different ign. timing to create more torque/hp. Some do, and some dont. I just bought it so I have a spare for ten dollars. The one I was using is simply sold on ebay as de restricted. That was 14-15 bucks. I'll get the proper links. So for 25.00 I have two working CDI's a Good coil on the scoot, and a spare coil. Just the piece of mind is worth that.
The coil /cdi won't make the scoot go 50mph but they will allow it to if you change other things.
http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr (http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr)
http://www.ebay.com/itm/No-REV-Limit-Performance-CDI-Racing-CDI-Gy6-Based-Eng-/230392879012?pt=Motorcycles_Parts_Accessories&hash=item35a47c57a4&vxp=mtr (http://www.ebay.com/itm/No-REV-Limit-Performance-CDI-Racing-CDI-Gy6-Based-Eng-/230392879012?pt=Motorcycles_Parts_Accessories&hash=item35a47c57a4&vxp=mtr)
Both US sellers, and 3-4 days delivery
As far as i was told, the reason why agility is such a strong 4 stroke is partly, because it from standart have advanced ignition. :)
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..this 06 issa strong one...like my 08 was...unlike the 09...
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http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr (http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr)
That's the set I have
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http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr (http://www.ebay.com/itm/6-pins-Racing-performance-CDI-Ignition-Coil-for-Gy6-50cc-150cc-Scooter-moped-/260996452220?pt=Motorcycles_Parts_Accessories&hash=item3cc499cf7c&vxp=mtr)
That's the set I have
I got my mirrors from xuanxuanparts. That's for he A50 not the People right?
So what does the race CDI do? Will it help if my goal is more power for climbing hills and not maximum top speed?
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Nothing for more power in a cdi. Maybe a tiny increase but the contra spring/rollers are the only help there without increasing the HP of the engine.
The issue is the relatively low hp of the engine. Gearing is the key to maintaining rpm/speed. You need to keep the torsion drive closed, and the Var open to keep lower gearing. Light rollers, and a stiffer spring do that. Didn't you install a contra spring? If you did, and it's still loosing speed up hill try the next spring stiffer. Not all springs are the same.
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Nothing for more power in a cdi. Maybe a tiny increase but the contra spring/rollers are the only help there without increasing the HP of the engine.
The issue is the relatively low hp of the engine. Gearing is the key to maintaining rpm/speed. You need to keep the torsion drive closed, and the Var open to keep lower gearing. Light rollers, and a stiffer spring do that. Didn't you install a contra spring? If you did, and it's still loosing speed up hill try the next spring stiffer. Not all springs are the same.
No the springs finally got here Monday evening. We are going to do everything at once, hopefully this weekend. Which reminds me, I need to get some locktight for when we replace the variator nut.
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I hate to burst bubbles... Do 1 item at a time. Then you Know the result. It may take all day vs 2 hrs. but you will save a lot of guess work. I would install the contra spring first. That will let you know which rollers to use.
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Do as zombie said and install every piece once at a time, then put the scooter together and test it.
If you do several changes, without testing in between, you will end up having a hard time figuring out any problems that you might experience after.