 port & polish
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Joined: Jan 2005
Posts: 146
Adjunct
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OP
Adjunct
Joined: Jan 2005
Posts: 146 |
Just saw a picture of someones new polished ports and it wasn't what I expected to see. Didn't look like much of an improvement. Is this something that could be done with a dremel tool instead of sending it out to be done or am I missing something here?
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Re: port & polish
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Joined: Jan 2005
Posts: 3,753
Loquacious
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Loquacious
Joined: Jan 2005
Posts: 3,753 |
honestly if you have to ask i would not touch it, you could actually make it worse if you dont know what your doing
Frank
(Former)05 BA tbike pipes, ai removed, Freak, mikuni hsr 42's, 904, ported/polished head, 1mm oversized valves
NOW-2010 silver and black tbird
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Re: port & polish
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Joined: Jul 2006
Posts: 1,337
Learned Hand
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Learned Hand
Joined: Jul 2006
Posts: 1,337 |
Tom- there is a lot more to it. The exhaust side is polished. The intake should be swirled. Some material is removed. In some cases, depending on other mods, a lot of material is removed. Frank is right- if you have to ask, it is probably above your skill. Check out the british customs web site. they have some info on it and some ready to bolt on.
2002 Bandit 1200/ GSXR cams/ 1277 BB Kit/ Holeshot header and can/ 38mm flatslides/ a good head/lotsa hp/lotsa tq- lots of rear tires...
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Re: port & polish
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Joined: Aug 2006
Posts: 321
Adjunct
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Adjunct
Joined: Aug 2006
Posts: 321 |
as a general rule, big hogged out ports are great for drag racing and full throttle fun, but on a street motor may you may lose a lot of power on the bottom end.
I'm assuming it's my pics you looked at, I told the machinist to do a light street port and polish. This is barely more than cleaning up burrs, bumps, and imperfections leftover from the factory casting of the head. They smooth out rough spots and give a light swirl to the intake side to improve fuel atomization, the exhaust side is polished smooth.
They didn't really remove much material, just a little reshaping and grinding and polishing.
There is no greater thrill than being shot at with no consequence. -Churchill
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Re: port & polish
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Joined: Jan 2006
Posts: 435
Adjunct
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Adjunct
Joined: Jan 2006
Posts: 435 |
Also the bigger your valves, the the more porting you can do.
TBA, Stainless extractors / drag pipes, 65mm over forward controls, Thruxton needles, 904cc, head ported, lowered 1-inch, Console removed, relocated battery box, Australia.
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Re: port & polish
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Joined: Nov 2006
Posts: 1,302
Learned Hand
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Learned Hand
Joined: Nov 2006
Posts: 1,302 |
when I bought my '60 bonnie the engine was all tore down and 2 of the ports had holes burned in them. The result of an amature port and polish attempt.way way before the internet.
mike
2006 neon blue speedmaster
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