My other car a 1997 Chrysler Sebring, 112,000 miles needs oil cam seals, as well as water pump and timing chain, Since I will have the heads off anyway I was going to port and polish them. My question is, if I do that must I have the PCM reprogrammed or and I just drop them back on and go,also is there anything else I should do while I am in there?
Head porting question
- Thread starter Logan541
- Start date
I do own a GP as well and trust the guys here a lot more than anybody else on another forum.As for knowing what I am doing sonny, I probably been playing with cars before you were born LOL, I grew up with real muscle cars in the 70's I just never did one on a car that had a PCM and looking to have some fun while I have it apart. and BTW its "know" not "no"
machinegunsquid
New member
^ XD
As long as you know what you're doing with the head porting, have at it.
You wont need a retune, though to maximize performance you should (but that's obvious for any motor work)
As long as you know what you're doing with the head porting, have at it.
You wont need a retune, though to maximize performance you should (but that's obvious for any motor work)
I am not sure on what kind of "gains" you will see from it but it for sure wont hurt. The way I see it ANY time you let the motor breath a little better you are making headway.
LOL ok guys lemme 'splain, old hot rodder enjoys working on cars can't afford and old muscle car to build from the ground up and jut missing it, plus it's "therapy" gets my mind off things and takes me back to happier times of my youth, gonna be replacing cam seals anyways so figure while I am in there;"why not?" That clear it up any? 
I 100% say do it.... If they are off/almost off I would do it.
like said above, No you dont have to, but you could to get some gains.
coolone
New member
No tune needed, if you're going to just polish things it will make flow slightly better but no gains. If you decide to take some material off, less is more is the key : )
there's a good thread on here somewhere, search it, about porting heads, or just google it, make sure you understand what you want to do prior to doing it, have a plan of attack. Dremels will take forever, die grinder will take off a lot of material fast and really isn't recommended for a first timer. Lol... I wasn't trying to discourage you, rather just let you know my $.02 that unless you also open up the intake and the exhaust with at least minimal changes, that it (porting) isn't worth it. But many of us have gotten the bug by starting with just fixing this or doing that, lol, winding up with a full rebuild.
Good luck!
there's a good thread on here somewhere, search it, about porting heads, or just google it, make sure you understand what you want to do prior to doing it, have a plan of attack. Dremels will take forever, die grinder will take off a lot of material fast and really isn't recommended for a first timer. Lol... I wasn't trying to discourage you, rather just let you know my $.02 that unless you also open up the intake and the exhaust with at least minimal changes, that it (porting) isn't worth it. But many of us have gotten the bug by starting with just fixing this or doing that, lol, winding up with a full rebuild.
Good luck!
Fivefingerdeathpunch
New member
You couldn't even toon a 97 Chrysler sebring anyway lol.
16MustangVet
New member
I vote death by fire esp if it has a 2.7 in it
LOL oh I am going to port not just polish, its a 2.5 yeah I know not much you can do with them but it's a $2,300 toy with 112,000 miles and near perfect body and mint interior and new top found the cam seal issue and oh well figure lets play just wish you could get headers for it.I did find a ram air hood though and did pick up a nice spoiler
FASGP
New member
I don't think I can ever remember a set of heads that were on the bench that went back in stock...even for a Sebring. Do it...while at it, take a look at the exhaust primaries and clean them up as well...
indygrandprix
New member
Be careful when you port the exhaust ports on cylinder 1 i think. I was porting the heads on my avenger and ported right into the coolant passages. I'm not sure if it was a flaw in the casting or if they are all like that but be very careful with how much you take off. I'm sure you already know that if youve been doing this awhile but just a heads up.