Plug Question

[iamschme]

Well it appears that i have all the parts in to rebuild my 250r into a 300r. gonna start putting it together today and i have one little detail that i overlooked. the plug. do i use the same br8es ngk plug or do i need hotter or colder? if so, what plug number?

[InPiEcEs]

Someone here may put me in the weeds on this one, but here goes.......;)
I would start with a B9ES, or BR9ES first. The 8 is hotter.
Get it broke in, and jetted in, and see how the plug looks with a few chops.
You can always go with a hotter plug if you need to.

[300rman]

i kept the same plug. no problems at all.