sparkplugs !!!!!

[slickchaos]

and yes i did a search..

Evidently last year i was using br9es in the ski as the prior owner had used them.

I went to the yammy dealership and forgot the plugs size and style and asked them to look it up in the system and he gave me the BR8es.

when i got back i realized they were different..

does anyone know which is recommended..

im running a bpipe with stock motor.. no other engine mods...

 

[Mouthfulloflake]

you shouldnt be running the ES plugs on a stock head, the stock head uses HS plugs.

B8HS is stock plug.

most aftermarket heads are thicker and require B8ES ( extended shaft)

the R in the number means its a resistor plug, and the 8 or 9 is the heat range.

 

[Swooperjet]

The 8 is correct, but not sure about the es

 

[Freakrider]

yes above correct... BR8HS for stock head (H means half shaft).

 

[cosander]

If the es plugs don't reach the piston then wouldn't they raise the compression by occupying more space?

 

[oxnard111]

If the es plugs don't reach the piston then wouldn't they raise the compression by occupying more space?

don't think it works that way