Can't find the Spark Plug I need
 

Well as talked about in a couple other posts I am going to a cooler heat range for the 14:1 on 110 octane.
stocker being dr8ea I figured either dr9ea or #10 heat range and try them both to see which one gives me the appearance I should have. The HPR website says to use "#10" heat range. Problem is, this is useless info because a dr10ea does not exist - I just confirmed that on the NGK website after having no luck finding it at vendors - and I have no idea what other letter prefixes can be used in the place of this dr plug, if any.

Any help is appreciated, I guess I'll try the dr9ea, and if its still too hot I am down until I get the right answer.

Can't find the Spark Plug I need
 

I buy my #10's from Randall.

Can't find the Spark Plug I need
 

oh come on man, I don't need to know where you buy, I need to know what you buy.
sorry, I should retitle my post, my bad.
Can you tell me what their number is?
Thanks NUT, knew I could count on a fellow night owl to respond this late in the evening. actually I'm on eastern time zone, it aint late for you I reckon!

Can't find the Spark Plug I need
 

I will be over at the shop and can look at my plug in a day or two. If you haven't heard anything yet, I will post it. Sorry, I don't know the number on the plug......

Can't find the Spark Plug I need
 

that's great DSNUT, thanks alot. if nobody else has posted by then I'll be looking forward to hearng from you.
I know I could order from HPR or THEBOM, but don't wanna wait for shipment, I can buy them local for this weekend if I know the number.

Can't find the Spark Plug I need
 

I run the dr9ea with 107 octane fuel on nos if that means anything to you.

Can't find the Spark Plug I need
 

yes, yes it does. [img]i/expressions/face-icon-small-smile.gif[/img]

Can't find the Spark Plug I need
 

Jr10b, or I run a Dr9ea. I have also tried a jr9b aswell.

Can't find the Spark Plug I need
 

I actually think the 9 will do just fine. I know some folks who run the 13.5/1 piston with 110 octane fuel on nos with the 9 and it looks great. [img]i/expressions/face-icon-small-wink.gif[/img]

Can't find the Spark Plug I need
 

I have used NGK plugs for many years and all I can say is that they foul out very easy.
Trying to do testing on a sunday with no major parts store open, has forced me to try a different plug.

The last two years I have been using Champion plugs!!!!!!!!!
Yes I am using a plug that can be bought for $1.35 and sometimes on sale for $.99
I get better readings and can take richer jetting without dying.

I am using a Champion stock number 110 RA8HC , when I tried to use #109 RA6HC, this plug was too cold for my motor.

Champions are opposite of NGK's - Lower the numer - colder where NGK's get hotter.

Try the RA6HC and tell me what you think.