Topic: plug caps?

[stewonepot]

Hi All,
I have decided to change the plug caps on my CB750f1 (German version)
I have sourced new caps on eBay with 5ohm value.
Is this OK
The value of my old caps ranged from 3ohm   to   10ohm              but here is the but   she ran very well.
PS i Also have new plugs installed.
Will these new caps make any difference?

Regards Stew

[flybox1]

A better spark is a good thing 
(potentially) better fuel econ, easier starts, less emissions

[alacrity]

if your old plug caps are tested correectly and function correctly, the only benefit new ones will offer is that they might be prettier.

[Duanob]

if your old plug caps are tested correectly and function correctly, the only benefit new ones will offer is that they might be prettier.

I dunno the original caps and wires a just plain old at this point. I've never understood Honda's idea that plug wires are part of the coil and would never need replacing. On all of the older vehicles I've owned, replacing plugs, wires was just part of the annual tune up process. Replacing them can only make it better. I replaced my OEM coils with Dynas and replace the wires every two years just because I don't put nearly the miles on my old bikes as I would a daily driver. Makes me feel better.

And I think you mean 5000 OHMs? not 5 OHMs. Did you get NGK caps? They seem to be the best replacement for old Hondas.

[stewonepot]

Hi Duanob
Yes the plug caps i am after are NGK in black just for looks, It sounds tricky to change the HT leads.
And yes you are correct 5000ohms   Not to many zeros on my cheap meter.
Regards Stew

[Herr Supersport]

Steve

I assume your are using R-type sparks - myself cannot get others today - so you have one resistor in the cap and a second in the spark. Normally that works OK.

If your bike doesn't run well, you can remove the resistor from the plug cap and then put in a 5mm [diameter]/18mm [length] piece of alloy or copper instead.
The long type [XZ05F..] has the resistor towards the spark. Undo the brass-screw and erverything will fall out.
The short type [VD05F..] has the resisitor towards the wire. To open it you turn a weak-alloy tube with inner dia 2.8mm on the screw, move it right-left-right-left an pull the screw out. To reassemble, just press the screw with the two washers back in the body.

Greets, Daniel

[BobbyR]

Your caps have screw threads at the end that bites into the copper.  It is a good practice to just snip an small piece off the end of wire to assure you are connecting to cleaner copper.

[stewonepot]

Yes Bobby that is what I will do when they arrive.
Cheers Stew

[PeWe]

NGK D8EA and Denso X24ES-U are non-resistor plugs. Both available.
I need another box when my carb tuning session last year has consumed at least 24 plugs.... can not read a fouled plug...