Port and Polish?!

[beck125]

Ok can someone give me the complete run down on a port and polish, like specs, if there is any, what is being done, do you have to change valves or anything thanks,

[bigbad400]

all they do is port it (intake and exhaust ports) out to a bigger diameter. and then they polish it to a mirror finish to allow more air to flow, i dont think you need to do anything with your valves but a good compliment to a p&p is +1mm valves. or like i have the kibblewhite titanium valves and HD valve springs and they make a big difference over stock.


if you have a basically stock machine (pipe filter but no motor work) the port and polish wont do much, but add a hi compression piston and a full exhaust, and youll have a machine then. good luck

[bigbad400]

i just noticed your sig... it will make great gains and i think you would be happy with it if you had someone who knows what there doing do it.

[honda400ex2003]

dont polish the intakes to a mirror like finish per say. make them pretty good but leave a bit grit there. it helps the mixture mix some more from what i have been told. I would have it done by someone if you want to have a perfect job. just cleaning the rough stuff out is not bad but to take material off is a bit different. you have to make sure it is the same on both sides and such to match them up. most places use a flow bench to see how the flow is coming out of the ports to make sure they match. this is the tough part and what makes a port and polish worth doing. just my .02 though. steve

[Honda#4]

My opinion is that a port job is great and well worth the money but its a job I think that a pro should only do.

[hypersnyper6947]

Here is a pic of my GT Thunder XC port work
http://i74.photobucket.com/albums/i276/aclasson86/DSC06739.jpg

[riotact]

Nice!! I'm thinking about getting mine done also do you have any other pics of that head?

[Honda#4]

What side is that taken on hyper?

[Pipeless416]

thats definitely intake, because the two exhaust ports are separate. the picture still has the rubber boot between the head and the carb on.

[Honda#4]

I only ask cuz it looks like theres a line or a ridge half way into the port. Might just be the boot is alittle off idk. Here's mine to compare.

[TRXRacer1]

Originally posted by Pipeless416
thats definitely intake, because the two exhaust ports are separate. the picture still has the rubber boot between the head and the carb on. LOL, advice is being tossed around by people who don't know how many holes are in the front and rear of the head...... scary.

[hypersnyper6947]

It is the intake side, the boot was ported to match up with the head.

[TRXRacer1]

Originally posted by hypersnyper6947
It is the intake side, the boot was ported to match up with the head. I think we got that but good to have more support in this incredibly simple discovery.

[riotact]

Originally posted by TRXRacer1
I think we got that but good to have more support in this incredibly simple discovery.

Really :huh :huh :huh

[TRXRacer1]

Originally posted by riotact
Really :huh :huh :huh Yeah, sorry on one hand but not at all on the other.

[honda400ex2003]

WOW i cant even explain this ^^^ uncalled for and unbelievable that some people need to bash like this on any subject and have no problem with it. steve:eek2:

[thebig450es]

Whats the avg. power difference between stock and a P&P

[honda400ex2003]

i am not sure if anyone has actually done a before and after comparison to find out what the differences are. I guess you cold contact c&d or something, they may have some from testing for the best port job and stuff. otherwise if anyone has any dyno numbers or something post it up i am interested too. lol steve

[thebig450es]

I know the more the engine is built the more the P&P will help.

[honda400ex2003]

agreed, the more radical you can go. :devil: I would say that it is along the lines of maybe a horse or two at most on our machines. maybe 3 or 4 on bigger engines. steve

[hypersnyper6947]

Originally posted by TRXRacer1
I think we got that but good to have more support in this incredibly simple discovery.

your cool.......:ermm: