Port n Polish


Hi all, this is my first post so I'll try and get on subject. Finally flowed a Busa head on my bench and couldn't believe it 133cfm@ .350" int. and 76cfm@ .350"  63% ratio int. to ex.  With a little polishing ( removing casting marks) etc. flow up 8cfm. with a .380" cam on intake and 6cfm with a .350" cam on exhaust. Keeps flowing more at higher lift but int. to ex. % not what I expected. Looks like a larger exhaust valve would help as I've been used to getting ratio to around 80%. Has any one here had any head work done and are willing to share specs.


 Guys, I guess no one is talking. From my first tests it looks like lots more potential. Just playing with a hurt head I came across that the cam chain tensioner failed in a couple of years ago. This engine(Busa) will pick up big time with a very little work, that statement will probably bite me in the ^ss. But seriously as if it doesn't already rule, minor port work and the right combo of cams will leave other Busas behind. I'm currently porting some demo heads for display and will post on this subject when I get time to play with port # 2. Two months in front of the bench is and two more to go before our season starts again.  


Hi James, 1 cfm. has the potenial for .43 H.P., I'm not sure what stock cam lift is but with minor porting and .380" intake, the H.P. figure should be up at least 14 H.P. at the crank, roughly 15% less at the rear wheel. This head flows almost as much as my drag bike and I was making 217@ the rear wheel a little differant combo than the Busa but the potential is there.


Hey dlind,
who can do this kind of work, and how much do you think is a fair price??? Keep experimenting, I'm interested to see what combo works best....


I have a 1498cc Busa with stage one web cams making 207 hp. Don't know what flow spec's on head though. knebnr


Hi guys, hoping to get time for second port, but I think cams are the best bet cause it keeps flowing more at higher lifts, as for price I don't really know what to tell you. Personally I think most shops have some old guy like me doing their work for a small price. I won't get into that one, just find that old guy working out of his basement with a flowbench. Mean while check out Moto Man. I'll report back latter.
Thread starter Similar threads Forum Replies Date
ArmyBusa08 NOS? How about a Port & Polish? Random Thoughts 18
S USB port help Electrical Mods 27
M Port Richey FL area need work done General Bike Related Topics 4
Twobrothersbusa GPS Mount and 3BR USB Power port General Bike Related Topics 14
O Having a hard time trying to load stage 1 turbo maps on a old pc3 r serial port Turbo 9
Z Wet methanol system and direct port injection Nitrous 8
infidel Open port in Gen 1 airbox? Busa Mods 2
TWT racer Port Dover 2011 sharin some Pics General Bike Related Topics 7
TWT racer Friday the 13th Port Dover General Bike Related Topics 5
texas-buzzard rcc port fueler Turbo 0
G Fuel Pressure port size Turbo 2
bigbusabigbusa port tech heads General Bike Related Topics 3
redkat05 Puttin Bay? Port Clinton Ohio? General Bike Related Topics 3
Z Tapping into the intake port of the head Nitrous 21
mestona ECU Flash, setting up a COM Port with windows7? Gen II Busa Information 19
J Thanks Johnny Cheese and Bill @ Port-Tech Engine and Performance mods 20
C Hanaracecraft Port fueler Engine and Performance mods 1
Fastfrog007 self diagnostic port General Bike Related Topics 13
luvmybusa I'll be in Port Charlotte, FL March 14-21 Random Thoughts 3
R Exhaust Port Gaskets / Yoshimura R77 Gen II Busa Information 16
turbobusa2000 Port Fueler Turbo 8
dolilind HAHN TURBO + PORT FUELER Turbo 12
Revolution Port jefferson, long island n.y. General Bike Related Topics 17
K Hahn kit + external tial dual port wastegate Turbo 2
Southside Playa Port operations to the arabs ???? Random Thoughts 42
Mikey D Braided Stainless lines, full port valve, Random Thoughts 18
captain Sony Port Replicator / Docking Station Random Thoughts 0
O Smog-port block-off covers? Modifications & Aftermarket Equipment 10
N 3m Perfect It Polish Gen II Busa Information 2
garage monster Wheel choices , colr, polish, chrome Busa Mods 5
B polish General Bike Related Topics 6
D Should I go ahead and polish it? Appearance mods 17
Dino Polish Sausage Random Thoughts 8
rashad Does anyone know a good way to clean and polish a Brock's exhaust? General Bike Related Topics 6
J Polish a Roadlok Gen 1? Appearance mods 11
K New Busa Polish on the market General Bike Related Topics 40
Fernanhaya Polish Frame Step By Step Appearance mods 40
B what's best to use on aluminum rims for polish? General Bike Related Topics 9
mrnyc01 Polish Question Appearance mods 2
znebula Stock 08 Can Polish? Busa Mods 22
S For the nail polish naysayers Random Thoughts 109
01LANDROCKET Polish for perfect General Bike Related Topics 0
dsbunton646 metal polish for mid pipes? Maintenance and Do-It-Yourself 9
Mr Bogus Alternate to "Honda Polish" Random Thoughts 15
H Chrome cover or polish frame Busa Mods 0
mymaster Honda polish-Plexus low tech comparison General Bike Related Topics 19
mymaster Bought a can of Honda Polish General Bike Related Topics 46
GMbusa Paint or Polish. General Bike Related Topics 9
dewie polish pegs and guards Appearance mods 1
N too polish or not too polish Appearance mods 16
Similar threads

Latest Bikes

  • Bam Bam
    My Last Little Girl
    • rlmoorex
    • Updated:
  • My first Busa - 2012
    Nice, clean and well looked after , my pride
    • Kimbo2570
    • Updated:
  • busa
    nice and clean again first ride since ecu reflash
    • bigjimbo
    • Updated:
  • A blue bike
    2017 blue & black
    • Hayabusa Wannabe
    • Updated:
  • 2011 busa
    2011 limited edition candy sonoma red busa
    • Hetheus
    • Updated:

Forum statistics

Latest member
busa berd