NGK Plugs

[pidjones]

Jesus! I went to resistor plugs and non-resistor caps.

That's what I plan.

[Czakky]

Yep, as I posted a year ago...

"Available only while supplies last."

I won't be needing any soon. This is maybe 1/3 of what I have on hand 

Were you the guy with all the TP a year ago?

Ha!

[m in sc]

i havent checked this out but might help.

https://www.sparkplug-crossreference.com/convert/NGK_PN/B8ES

[pidjones]

My local NAPA has them in stock, and says they can get more. Most local NAPA stores show them in stock.

[bhh1989]

So if I'm capturing all this correctly, stock RD (or any motorcycle in the '70s probably) would have had no resistor in the plugs or caps - now the thing to do is (was) to run NGK resistor caps + stock B8ES plugs.

Since the B8ES is no longer made, use BR8ES + stock caps?

[m in sc]

stock Japanese bikes had (typically) resistor caps stock.

[gardenhosebusabottle]

I found an autolite specific "application" chart.  You can lookup plugs for both the 350 / 400.  The 350 plugs options appear to be only non-resistor.   The 400 has both options. 

https://www.autolitesparkplugs.com

Under application drop-down list, select Powersports / Year / Vehicle type, etc..  When you get to the last drop-down, leave it at L---UK---.  Select find parts and it will list compatible spark plugs.

IMPORTANT:   After selecting which spark plug to look up, there will either be a RED or BLUE line above the selection.  Blue is what you want to see.   RED means the plug is incompatible for your ride.  ( I just about missed that when looking up options for both bikes).

[Milan]

https://shop.advanceautoparts.com/p/ngk-iridium-ix-spark-plug-br8eix-5044/15650072-P

These work good.
You only need 2, so no complaints about cost.

When you go to the website it gives you a 20% off code as well.

M

[pidjones]

So if I'm capturing all this correctly, stock RD (or any motorcycle in the '70s probably) would have had no resistor in the plugs or caps - now the thing to do is (was) to run NGK resistor caps + stock B8ES plugs.

Since the B8ES is no longer made, use BR8ES + stock caps?

No, they usually had resistor caps and plain plugs. With plain plugs getting scarce, you can use non-resistor caps (put a piece of copper in place of the resistor) and use resistor plugs.