hehe alrite in my haste i sourced out HT's spec list since its good for a lot of things but may have some holes in its info. If i recall correctly compression is what the heat range is based on and the gap has to do with valve lift and some amount or more of cylinder pressures but i have no technical information to provide on how the latter works.. forced induction? You'll have to read up yourself if curious.
That said the usdm itr plug part numbers are (PFR6G-11) (NGK) and (PK20PR-L11) (DENSO), taken from acuraoemparts.com. So you would gap to 1.1mm or .043". I think the jdm itr uses a 7 heat range. Manufacturers specs, you'll be fine. Id forgotten i spec'd to 1.1mm myself. :mrgreen:
