Head work pics... [Archive] - ATV Riders Forum

GIXXER1KR

11-12-2007, 10:13 PM

Hey guys i just wanted an opinion on the engine work i had done buy 1Dirracing...Its on my old Quadracer 250R.The bike is a real screamer.I still have it.He does 2 and 4 stroke motors and been doing it for almost 30 years.I am thinking about sending my 450r motor because to him and i have dealt with him in the past and was very happy..Take a look and tell me what you think!!!Any and all input will be appreciated
http://www.1dirracing.com/gallery/index.php?cat=10018

chad502ex

11-13-2007, 07:45 AM

porting a 2 stroke and porting a four stroke is entirely two different things.

Good luck.

hendershot106

11-13-2007, 08:01 AM

x 2 :huh

GIXXER1KR

11-13-2007, 03:08 PM

I know theres a huge difference.Hes been doing both for years!He took such good care of me on my 2 stroke build i am debating on having him do my 4 stroke..

11-13-2007, 03:37 PM

the pictures i see on that site look like just a port and no polish. polishing them makes less turbulance in flow therefore it flows better

baker250r

11-13-2007, 05:34 PM

if u were lookin at the intake side... u dont want to polish it.

11-13-2007, 06:22 PM

Originally posted by baker250r
if u were lookin at the intake side... u dont want to polish it.

yeah i heard of this but i wondered why turbulant air is better than free flowing if it were smooth. i guess turbulance makes it swirl or something

mach1stang

11-13-2007, 06:50 PM

Originally posted by FoxHondaRider
yeah i heard of this but i wondered why turbulant air is better than free flowing if it were smooth. i guess turbulance makes it swirl or something

On the intake side you want it rough because it will create a better air fuel mixture.

11-13-2007, 06:52 PM

and exhaust is smooth and has the shiny look so the carbon wont stick to the ports as much correct?

mach1stang

11-13-2007, 06:54 PM

Originally posted by FoxHondaRider
and exhaust is smooth and has the shiny look so the carbon wont stick to the ports as much correct?

I am pretty sure your right, but we both may be wrong lol. but i am pretty thats the theory.

11-13-2007, 07:21 PM

i think we are right, i want to get a port and polish done but i'm not sure if there is a port and polish to increase in all areas EX:low, mid, top end. anything that gives more HP in those areas than stock is what i want.

mach1stang

11-13-2007, 07:36 PM

To my best knowledge I think it depedns on what other upgrades the motor has, but I think porting and polishing is a good all around upgrade, but I am sure there are others that will disagree.