Yes, the Wiseco 440 11:1 piston has the same pin height as the stock piston, hence the same deck height. It took .003-.005" to deck the cylinder after the sleeve installation. Deck height is now .040". Pretty close to what OnOneWheel measured. Cometic makes a .025" thk. coated stainless gasket. With that gasket the comp. is 9.8:1. Take another .030" off the deck and you get 10.8:1 >>>much better! Wiseco must have calculated the 11:1 number assuming a "0" deck height. Guess I'll go back and deck it another .030" or so and check the cam timing - should be retarded about 1.5 deg. I'll post all the actual numbers later. As a side note, Honda is right on with their 9.1:1 stock figure!
Matt Fisher: Does that Ross piston have a dome, or is it a flat top?
The Wiseco 440 11:1 piston, pin, rings & clips weigh 402 grams total, stock was 383.
Last edited by MIKE400EX; 02-16-2002 at 11:52 AM.
Mods: Big Gun FS w/MM quiet core, no lid , K&N, FCR41, 11.3:1 440 and Web 479 cam, porting, no choke. Works TRS fronts & Ultracross rear shock, a few other goodies
450R,250EX, Blaster, Banshee