... no se de nadie que aporte material a una culata para estrechar ports ...
Esa vieeeja maaagia neeegra :wink: :

http://www.avengercylinderheads.com/volume_velocity.php

http://www.theoldone.com/boss429head/

http://homepage.ntlworld.com/webzxr/...s/sigvart.html

http://www.motorcycle.com/mo/mctext/h_hon.html

http://www.nightrider.com/biketech/h...ormance_00.htm

http://www.automotivetech.org/forum/...p;pagenumber=1

http://www.rbracing-rsr.com/SAHeadTech.html

http://www.nhmotox.com/pdf/tech/K_Ca...e_Flow_101.pdf

http://cycledoctor.com/JohnsonArticles/JET.html

http://www.motorcycleproject.com/mot...s-porting.html

http://mototuneusa.com/think_fast_intake_porting.htm

http://mototuneusa.com/homework.htm

http://mototuneusa.com/the_2007_superbike.htm

http://mototuneusa.com/super_sonic_nozzle.htm