Thread: port and polishing gtir

I been thinking about port and polishing the heads on my gtir. Im gonna install some brian crower stage 2 cams while I am in but was curious if it would be worth is to port and polish the heads and do a valve job, anybody done this. Im just looking for some input on if its worth it or not and how much hp I can get out of it.

I did a set of 3800 v6 heads just smoothing them and port matching and doing the intake and exhaust. It took me about a week of workin 3or so hrs on it. I nevergot the engine dynoed but I think it would be worth it . The Easter the flow the better.

i dont see there being any reaosn you couldnt clean up the ports some, clean up the casting imperfections, but i wouldnt enlarge them tho, unless you are having it dome perfessionally

what bits/tips ona dremel would you use?

heads?.. how many've you got?

personally when i was into hondas and port and polished many of heads i use these for a light job

http://www.professional-power-tool-guide.com/wp-content/uploads/2008/08/dremel-abrasive-buff.jpg

those depending abrasive buff they are really good for taking down/out imperfections in the aluminum head and good for smoothing out the wall and floors of the port. these would be used for a very mild job, nothing aggressive, just your very mild clean up port work.

you could go crazy and knife edge the port dividers on the intake and exhaust ports, enlarge the ports themselves, open up the walls and ceilings of the port ect....but i definitly would take it to a perfessional, and if you were thinking of going there and doing aggressive port work yourself, dont, you need a proper flow bench to test each port to make sure their cfm flows the same and that they flow the max per port. definitly not a do it yourself home job.

also if you get those use the brown first on all intake and exhaust ports, then the greyish one, the brown is a more aggressive buff while the grey one will smooth out the work from the brown. i normally go back and fourth untill i get the wanted results, it definitly will take time.

those buffs are also good for getting the exhaust carbon out of the ports while working the port itssslf if your head is dirty, or you could have the head hottanked clean which i recomend, them working from there giving you a clean canvas to work with

I am having it done professionally lol. I should of mentioned that. I got a guy here thats been doing if for at least 10 years, hes the only guy in town that does it..everyone takes there heads there to get em done. I will be getting them ported out and enlarged but only very slightly and I was basically thinking that it would be good anyway just to clean the imperfections like you said gt2871blubird also I will be getting a valve job done total cost is 200 bucks.

gt2871blubird, Im assuming you are running a 2871r is it .64 or .86 and what kinda power u making? Im hoping with a port and polish and stage 2 cams I can make 400 hp at 20 psi. I know it will make 364 on bone stock sr

you dont need to do headwork for your goals but to each his own.

well back to my original question, will the headwork be benifical and worth it morgan?

if you got the money to do it then it wont hurt but its not needed