pi vs ported pi flow
01-23-2009, 02:23 PM
#21
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nah, sorry, im going to end up using them, i got the mass air for them too, but if you want the 22.5's that will be fine
and i heard going down into the valve area was a bad idea for porting? like near the valve seating area, can anyone confirm this?
and i heard going down into the valve area was a bad idea for porting? like near the valve seating area, can anyone confirm this?
01-23-2009, 04:43 PM
#23
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you want to keep the area before the seat about 85-90 percent of the size of the valve to create a venturi effect, the bowls area should still need porting though to create more of a rounded area on the backside of the port for a good flowing turn. the floor is really hogged out on your heads and the floor should only be flattened. the roof is where you can remove some material but have to be careful. i wouldn't even put those on my car.
01-23-2009, 06:09 PM
#24
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you want to keep the area before the seat about 85-90 percent of the size of the valve to create a venturi effect, the bowls area should still need porting though to create more of a rounded area on the backside of the port for a good flowing turn. the floor is really hogged out on your heads and the floor should only be flattened. the roof is where you can remove some material but have to be careful. i wouldn't even put those on my car.
01-23-2009, 06:14 PM
#25
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it looks like they are only 1/4 done lol. the intake port opening is the only thing that is ported. the bowl area needs to be done and the exhaust at least needs to be smoothed out (not polished).
if you really want to try them i would try and get them flowed and at least make sure they aren't worse than stock.
if you really want to try them i would try and get them flowed and at least make sure they aren't worse than stock.
01-23-2009, 06:17 PM
#26
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i can even probably tell you the scenario the person who did those heads were in........... alrite i got this dremel tool lets get to guttin, o **** my dremel won't reach any further. holy **** those extended bits are expensive and they won't fit my little dremel. aw screw it she looks good just like that il sell these beeches.
01-23-2009, 06:18 PM
#27
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i wouldn't even know where to get that done... this sucks, i just spent a **** load on these bad boys...
how could the flow be worse then stock when the only thing that was changed was the opening?
how could the flow be worse then stock when the only thing that was changed was the opening?
01-23-2009, 06:20 PM
#28
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flow isn't the only thing to thing about, it doesn't take much to lose velocity by going into porting a head with a lets gut this bitch mindset. its the same reason you can see a good 185cc intake port outflow a bad 205cc intake port, in this case size isn't everything.