Cop's mod and plugs

[Norman Herbert]

Question, my vmax is a 1986 with a 2001 motor, am I going to need a resister with the COP's
Question 2, can I use
E3 Powersport Spark Plugs E3.36 Diamond Fire
They are a gapless plugs and was recommended to me as being for use in v twin motorcycles

 

[Fire-medic]

The plug to be used according to the factory service manual is what I would use, not some gizmo-trickery.

NGK DPR8EA-9 for less-than one-third the price

https://www.denniskirk.com/ngk/spar...bACh0mYQIyEAYYAiABEgLL1fD_BwE&ad=228600803220

 

[sdt354]

Question, my vmax is a 1986 with a 2001 motor, am I going to need a resister with the COP's
Question 2, can I use
E3 Powersport Spark Plugs E3.36 Diamond Fire
They are a gapless plugs and was recommended to me as being for use in v twin motorcycles

If going with the O.E.M. TCI,I think resistors are a good idea. Upgrade to Ignatech and no resistors needed, plus the rev. limiter and other many features. Plugs? I've got to see dyno proof before I quit on the NGK's. They are cheap and work great.

 

[caseyjones955]

X3, a traditional NGK wont let you down, and they are cost effective. Both my V4s seem to like the plugs replaced more often than less but hats okay because they are almost free compared to many of the fancier plugs. I do have the NGK iridium in my Venture. Lots of miles and they still look and run great. I only paid the extra for the longevity, I do not believe they changed performance one bit. When I do replace them I'll likely just go back to the cheaper ones.

Here is some additional reading on COPs. Lots of good information from the Venture side. https://www.venturerider.org/forum/showthread.php?102440-Run-for-it-it-s-the-COPs!

 

[MaxMidnight]

Question 2, can I use
E3 Powersport Spark Plugs E3.36 Diamond Fire
They are a gapless plugs and was recommended to me as being for use in v twin motorcycles

I don't see why the cylinder arrangement would make one plug more suitable than another.
What is important is the heat range it covers which would be determined by the engine it is to be used in.
I concur with what my learned friends above have said about sticking with the recommended NGK's.

 

[Killjoy]

I run oem NGK plugs with the cops upgrade, no resistors, on my 1985. Runs like a champ, fires off instantly.

 

[Bill Seward]

Likewise. Resistorless COPS on my '85 for thousands of miles with no problems.

 

[jdeitz1979]

I run stock ones. Tried a few different ones with nothing gained other then having more spare plugs. You can do as you wish, but stock plugs are going to be your best bet

 

[one2dmax]

Likewise. Resistorless COPS on my '85 for thousands of miles with no problems.

And some people survive jumping off the golden gate bridge. Yes, you can have COP's on an OEM box and they can last. But, we've also sold a number of boxes to guys that it didn't last. The seller just needs the buyer to understand the risks involved and let them make their own choices.

 

[caseyjones955]

And some people survive jumping off the golden gate bridge. Yes, you can have COP's on an OEM box and they can last. But, we've also sold a number of boxes to guys that it didn't last. The seller just needs the buyer to understand the risks involved and let them make their own choices.

Wasnt there a year cut off where the TCI boxes were improved and much more likely to survive resistor-less COPs? Personally I would err on the side of caution. I often ride where cell signals don't exist and people are scarce.

 

[Fire-medic]

1985-'89 was a 2-pick-up coil arrangement, I've heard it referred-to as an analog system. The 1990-'07 is a 1-pick-up coil digital ignition. The first early system is the one owners have had ignition box failures using COP's. Is it the cause of the ignition box failure? I dunno. Beware though what others have experienced. Personally, I would add the correct resistors to the COP's, assuming you know what works, or buy Gannon's setup, plug & play, which is what I did.

 

[one2dmax]

The 90-07 boxes are far more durable though the pickups aren't. The early pickups are super durable and rarely go bad but the boxes are failing more and more often for our customers.

 

[Bill Seward]

I'd bet some of them are failing because of aging components, probably hastened by the possible stress of unresistored COPS drawing more current. I'd bet Yamaha hasn't made a NEW unit for decades, so even if you sourced an unused one, it would still be almost 30 years old. If mine ever fails, it's off to Sean for an ignitech unit. I comment that mine still is working, but I am very aware that the next spark it generates might be its last.. If it's caused by non resistor end COPS or just age related failure would be hard to determine by me. I'd offer to send it to Sean if he'd want to have a look at it.

 

[one2dmax]

Sadly Bill there isn't any real way to determine with accuracy if it's age or load. Either way thankfully there are still a few options (Dyna 3000 or Ignitech from us). There was even a guy who rebuilt these things but never bothered to find out who that way. I think John at RMS had them done that way.

 

[Bill Seward]

Sean, what's the availability and current price of the Ignitech unit? I went to their website, but found nothing for a Max. When the time does come, I'll definitely get the part from you.

 

[caseyjones955]

May I clarify, the Dyna 3000 would still require resistors?

Info on the correct resistors is elusive, theres more to it then making the total load of the coil stick emulate the total load of the OEM coil. I picked up 4 ceramic wire wound resistors and they are bulky. I just went with the Ignitek anyway. I'll do the same on the Vmax this spring.

 

[one2dmax]

Currently the igni units are $350 and we have to get them made in batches. We're also working currently to get improved maps which hopefully will be ready very soon.
The dyna and stock cdi both should have resistor type cops if you go that route.

 

[UFO Max]

Hi All,

Can anyone point me in the direction of getting the COPS set up? I have a 2005 V-Max with the Dyanatech 3000 box and two dyanatech coils. I'm not sure why the previous owner only replaced the two coils.

 

[Fire-medic]

[email protected], Sean Morley for COP's setups, they come-up used from time to time. Be aware that the early 1985-'89 CDI boxes need a resistor on the COP's to permit longer life, as many people as mentioned above have fried their ignition boxes after going to resistor-less COP's.

If the bike runs OK otherwise, "if it ain't broke, don't fix it." The main benefit to using COP's is the ease of replacement, as the front coils are hard to-access.

 

[Peterdm22]

Currently the igni units are $350 and we have to get them made in batches. We're also working currently to get improved maps which hopefully will be ready very soon.
The dyna and stock cdi both should have resistor type cops if you go that route.

Hi,
I have a 2000 max that one cylinder cuts out at idle and lower cruising rpm(I can hear it and smell raw fuel at idle(no leaks) as I roll on the throttle I hear the cylinder come back on the bike has cop setup with NO resisters on a cheap amazon box I bought to get it running. It’s the right side can I can hear it smooth out when the throttle is turned up after a certain point(just over cruising). I had the carbs rebuilt and synced by a Yamaha specialist here in central PA. I’m thinking due to smelling fuel at idle it is more then likely one of the densi COP’s or I may need one of your “ignitiorn boxes” I will be testing the resistance over all coils here today but any insight would help. Thanks and cheers, Pete M. PS bike has 10k miles on her.