spark plugs

[mopower77]

ok one more for ? seeing how was first ride of season . i have a protec head and noticed that the plug holes seem to be alot thicker then stock and the stock plugs dont thread that far down in will this be a performance issue and do i run a different plug in place off stock

 

[tor*p*do]

assuming SJ, yes, stock is NGK BR8HS
a/m head is BR8ES like E for extended
get the solid tops !

 

[mopower77]

will i notice a difference doing this

 

[tor*p*do]

should show some minor improvements
what plug were your running?
is this an SJ? 650 or 701?

 

[mopower77]

its a 701 was running the br8hs's

 

[Freakrider]

yes u need to run the ES...

 

[WFO Speedracer]

Yes you lose compression running the smaller plug plus your spark is down inside a hole.not too good!

 

[ticega306]

what about ES in stock head... yeah!! I bet that will increase compression a bit and put the spark right in the middle of the combustion*...BRAAAP








*the author of this post is not responsible for any damage whatso ever caused by applying the above statement:sneaky:

 

[mopower77]

i hope so because ive spent alot of time on this all winter and today riding it didnt seem that big of a difference then the 650 that was in it. im still working on the jetting as well but hope it helps

 

[Mouthfulloflake]

I once bought a ski with a protec head, and the HS instead of ES plugs in it, it was damn nearly impossible to start, and ran really crappy.

if you ever have that head off, and look at where the spark happens with the HS plugs you will understand.

Use the ES plugs in the taller protec head for sure.

 

[mopower77]

so you noticed a big difference?

 

[Shonuff]

Get the NGK BR8ES Solid Tops as recommended above.

NGK Part Number 3916 - I bought a case of them yesterday.

Get your own!

 

[vitaly]

As everyone else mentioned before, get the BR8ES, solid tops, and don't hesitate to change them as needed. A plug can serve for a season or can get fouled in a few minutes.
BTW, just from my personal preference, if one plug is fouled, change both, easier to keep track on, they are like a $1 each if you buy in bulk.

 

[superjetkev]

so you noticed a big difference?

i doubt youll feel a big difference, but your engine will be firing correctly. definatly cant hurt