1441cc kit 3300 vs 4400?

[Got-Busa?]

Originally Posted by GPW

Just a mild hand port done on that 1441 nothing big at all....the next 1441 will have a pure CNC-Valve job and all with a set of moderate cams, the head should increase power by 15-22%.

So it did have a GPW/HPC hand port done before....gotcha....

[Commuta_Busa]

the Vance&Hines head should help perk things up.

[GPW]

Originally Posted by Got-Busa?

So it did have a GPW/HPC hand port done before....gotcha....

still does not that it matters....anyone that builds motors knows a CNC 5 Axis Radial valve job head with a few other extra's makes way more power than a mild hand port...not everyone can afford a 12-13-1400 head job. On my 18th. motor now they get better and better.

[Got-Busa?]

Originally Posted by GPW

still does not that it matters....anyone that builds motors knows a CNC 5 Axis Radial valve job head with a few other extra's makes way more power than a mild hand port...not everyone can afford a 12-13-1400 head job. On my 18th. motor now they get better and better.

Stock head or mild hand port....I'm getting confused on what the bike REALLY had done...?

[GPW]

PM the owner he might tell you...

[OB_John Noonan]

Originally Posted by GPW

...a CNC 5 Axis Radial valve job head

Please tell me more about this CNC 5-axis "radial"


valve job and all of the HP you mentioned..?


J

[Got-Busa?]

I think if you had one John you would be faster....

Kidding....

[GPW]

Originally Posted by OB_John Noonan

Please tell me more about this CNC 5-axis "radial". Typo...should have been Radius Valve Job.


valve job and all of the HP you mentioned..?


J

Call Ward Performance they quote the power number gains there in percentages with and without other mods and their CNC head. Typo...should have been Radius Valve Job.

[LeDauz]

just looked at the Ward Performance site and i don't understand most of what it says but

so far i got that porting the heads allows for greater air flow by reducing the amount of areas inside your heads that restrict air flow. more air + more fuel = more power
simple in sweet
to bad ward performance doesnt have the percentages gained by doing a ported head vs not porting the head

anyways i guess i need more research so many options and not so much money

[GPW]

Here is what he sent me a week ago. Responding to that exact question, doing my homework.

Our typical power increase for a Hayabusa, which usually includes a 3mm overbore is 35-40%. I would say a ported head and cams would be closer to 20% (no big bore kit).



Rick Ward

Ward Performance
email: info@wardperformance.com
phone: 763-441-5535 fax: 763-441-7555
visit us on the web at Ward Performance

[LeDauz]

nice

[GPW]

Originally Posted by LeDauz

nice

One of the three companies I use for high-performance headwork. We are doing another 1441 with a rock solid head on it shortly and I want to do a third with big valves added so I can compare all three power levels and price accordingly for our customers. I understand advertised numbers but before afters on our dyno machine give me real numbers to look at..

[bigfootatplay]

A good head/cam package isnt cheap... but worth every penny.

[Jay]

We do a radius valve job on all of our busa heads.

Jay