Topic: Electronic Ignition and Iridium Plugs - Are they worth it?

[NickRafAcosta]

Hi all,
Getting my 1975 Honda CB750F Supersport restoration project all ready to go, and I've come to the crossroads of what to do when it comes to the ignition. I like riding my bikes fast (but safe) on the highway when I go across town here in Toronto, and I don't exactly want to deal with points anymore, So I was thinking of swapping out my points for a Ultimate Pamco Ignition Kit, that comes with the the electronic Ignition Unit as well as some Ultimate High Output Coils, and all the things in between to install them onto the bike.
In addition to this, I was thinking of adding iridium spark plugs to the mix for those supposed extra 1-2 HP.
These things claim to make the bike run more smoothly, start faster, and most importantly add more power, but my question is before I drop a few hundred for all of this, does it really work, and is it worth the 500 bucks it costs?
Nick
p.s. - I'm not going to bore out the engine ever or add any CR carbs while I have this bike, but wondering if these "upgrades" will give me some more horsepower

[Jerry Rxman Griffin aka MuthaF'er]

To me it's more about eliminating maintenance items. ie points, condensors, old style plugs. set em forget em things is what I'm after. If your parts work fine stick with them. If they NEED replacing then upgrade if you can afford to do so.

[seanbarney41]

Every time I come across a bike with Iridiums, it's not running, and they end up getting chucked in the trash...not very scientific, just my experience...

[bwaller]

Agree with Sean. For the life of me I never had luck with high end plugs in my 750 for the street. The bike suffered at idle and it just was never happy.

In the race engine though, it's a no brainer.  Iridiums work at high rpm.

[Cb750 Racer]

Agree with Sean. For the life of me I never had luck with high end plugs in my 750 for the street. The bike suffered at idle and it just was never happy.

In the race engine though, it's a no brainer.  Iridiums work at high rpm.

+1 on this comment d8ea plugs will work just fine for any bike on the street. For 500$ get the power arc ignition which would definatley add a few ponies from the dual spark feature.

[Medyo Bastos]

I prefer champions.


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[PeWe]

My bike has got different plugs but always ended up with NGK D8EA that work fine. NGK 5kohm caps. Denso X24ES-U has worked fine too last year.

Points work fine if you set it properly, make sure that the point plate can not move sideways when loosen the 3 bolts . If it can the points gap will always change when adjusting the ignition or just loosen the 3 bolts and the engine will run as crap when the points are not exactly the same. Points must be set with a dwell meter to adjust them equally. You hear when they are correct, a beautiful idle, no wrong ideas about synching carbs or change jetting.
This describes it all
http://www.motorcycleproject.com/text/sohcign.html
found here
http://www.hondachopper.com/garage/garage.html

Good set of TEC points with Hondaman ign module work fine on a street bike.  Dyna 5 ohm coils. That is what my K6 has and my K2 build will get.
If my bike should be a racer it should get a Dyna 2000 (adjustable advance curve) or better if there is any for the old CB750. With best coils  since charging problem is not important.

[02z06dave]

I've never installed a pamco, but i always put electronic ignitions on my bikes and I think its a worthwhile upgrade. Once you get them dialed in, you never have to touch them again. They're pretty simple to set up and get dialed in too. Of course, so are points. I've never tried iridium plugs, though. I always just stick with NGK or sometimes champion, if thats all they have at napa.

[Bankerdanny]

I like EI in general, but seriously doubt a 2-3% increase in power from plugs alone is likely.