thereasonsf3

iTrader: (2)

i am thinking about getting it done, and i have some questions

what kind of gains will i get
how much is it
is this a safe thing to do to my car
will it void warrenty

thanks

TeamNeXusOz

iTrader: (13)

i dont think you can port it that much ore...as i understand...its pretty ported as is...anymore might cause harm

Blacksheepdj

iTrader: (88)

There was a guy with a hotrod shop who ported and polished his Lancer and said he got great effects. Maybe try and PM or email him and ask for more detail?

Majik211

psionic98

iTrader: (1)

Just search around the boards.. search for port and polish and you will get a variety of answers... most of them stating that getting it done you will have minimal gains, but with every bolt-on mod after the gains increase more. Also pricing can be anywhere from about $500 for a local machine shop to well over $1000 at a pro shop. If you get this done, definetly get it done at a professional shop, they will do a much better job even though it costs more.

blaze_125

iTrader: (8)

RRM says you can gain up to 5% with their ported Intake manifold. So how hard and what would be needed in order to port my own intake manifold.

blaze_125

iTrader: (8)

Looking at this picture we can see the difference between a ported and a stock port. My question is... Is the stock port clogged like that all the way, or is it closing like that just on the ends?

Boeturbolancer

iTrader: (26)

It's actually clogged like that on the ends and about an inch inside... also there are parting lines the disrupt the flow... Once these are removed at both the head mount and tb mount your flowing better/more.

Porting the header is a great way to up yourself though you get more the more you mod... for turbo i recommend it if you wan the most. Usually the exaust side gets polished out more than ported. You tend to lose a little low end if you port the exhaust to much. The intake side of the head is a big restrictor so porting there helps big time especially when coupled with the ported intake manifold.

If you want to spend the cash and be top dog you should get touliped vlvs and have the seats redone to match. This is big $$ as the vlv's are custom made but they flow an avarage of 15% more volume than the 3 or 5 angle cut applications. They also reduce wear on vlv seating surfaces. For turbo applications they are great!

You can also have your guides redone with tighter tolerances. This really effective for boosting and higher compression motors as there tends to be blowby on guides when compression pressures get to high.

I'd stay away from boring the engine though as there is little meat there as is. Boring them out puts you that much closer to the waterjackets... especially since our motor is basically a bored out 1.8L from the mirage. For longevity i'd leave the bore alone until you needed to bore it out due to failure/damage. I really can't see the motor exceeding .020 over and being reliable.

Hope this helps in your decision process.

blaze_125

iTrader: (8)

So porting the intake manifold is good then? And should not be too, too hard. I guess as long as you don't port too deep you're OK right?

What kind of tool should be used for that. Would a regular dremel do? If yes, approximately what sandpaper grit should we go with?

rhyzin

iTrader: (1)

you'll need a die grinder. it took 4 hours to dremel a 55mm intake mani to 60mm. we didn't even finish with the dremel. we found someone with an electric die grinder. electric has constant power, but slow. a pneumatic one either overheats after awhile or the air compressor runs out of pressure(unless you got a large 26+ gallon tank).

thereasonsf3

iTrader: (2)

Thanks boe

TeamNeXusOz

iTrader: (13)

anyone know of a good port and polish shop in socal?