Porting lower intake manifold
04-19-2017, 09:58 PM
#3
New Member
Man I'd say if your going to port do the heads as well with port and polish with a 3 angle valve job. He's dead on for the manifold but between the 2 you can easily see some gains and better flow especially depending on what you habe done ir are planning to do. I'm sure someone has the charts or has dyno after these type mods. I've done them on several other cars but not the cobalt yet. It's in my near future though once I finish the stage 2 kit from zzp. Eventually I'll get to the cam,head and valves.
My goal is to be at around 300rwp by Christmas if I can get there with the funds I'm working with .
My goal is to be at around 300rwp by Christmas if I can get there with the funds I'm working with .
04-21-2017, 10:44 PM
#4
Member
Man I'd say if your going to port do the heads as well with port and polish with a 3 angle valve job. He's dead on for the manifold but between the 2 you can easily see some gains and better flow especially depending on what you habe done ir are planning to do. I'm sure someone has the charts or has dyno after these type mods. I've done them on several other cars but not the cobalt yet. It's in my near future though once I finish the stage 2 kit from zzp. Eventually I'll get to the cam,head and valves.
My goal is to be at around 300rwp by Christmas if I can get there with the funds I'm working with .
My goal is to be at around 300rwp by Christmas if I can get there with the funds I'm working with .
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04-22-2017, 01:34 AM
#5
New Member
I'm working on it now, got a bunch of suspension stuff coming from zzp. This car needs a total overhaul but was a good deal. Once I get this issue I have now straight I'll get to making it hold the ground better. I'm hoping I can get the turbo swap done by or before this time next year.
I gotta say zzp staff are good people and been helping me with orders ans what's what.it's amazing how much easier pure motor is instead of these computers lol. I. In a whole new learning bracket and this is probably a 2-3 year project. You know how it goes with adding things which breaks things then you fix and add more and so on ... repeat, add fix repeat again.
I gotta say zzp staff are good people and been helping me with orders ans what's what.it's amazing how much easier pure motor is instead of these computers lol. I. In a whole new learning bracket and this is probably a 2-3 year project. You know how it goes with adding things which breaks things then you fix and add more and so on ... repeat, add fix repeat again.
04-22-2017, 01:01 PM
#6
Member
I'm working on it now, got a bunch of suspension stuff coming from zzp. This car needs a total overhaul but was a good deal. Once I get this issue I have now straight I'll get to making it hold the ground better. I'm hoping I can get the turbo swap done by or before this time next year.
I gotta say zzp staff are good people and been helping me with orders ans what's what.it's amazing how much easier pure motor is instead of these computers lol. I. In a whole new learning bracket and this is probably a 2-3 year project. You know how it goes with adding things which breaks things then you fix and add more and so on ... repeat, add fix repeat again.
I gotta say zzp staff are good people and been helping me with orders ans what's what.it's amazing how much easier pure motor is instead of these computers lol. I. In a whole new learning bracket and this is probably a 2-3 year project. You know how it goes with adding things which breaks things then you fix and add more and so on ... repeat, add fix repeat again.
Just want to throw in there that Aaron at TTR (Turbo Tech Racing), great guy man! Although I'm not sure if its just him running the business alone or what, but you can ask him anything too! He gives good unbiased opinions.
As far as suspension, are you getting coil overs? I got some KSport pros but I wish I would've done a bit more research as I hear a lot of good bout the BC coilovers. Either way I'm happy but I will say that my fronts are perma-stuck at the ride height theyre at.
Post stuff as it comes man, wanna see how it turns out. If that's the car in your sig that is sick!
04-22-2017, 10:57 PM
#7
Senior Member
Man I'd say if your going to port do the heads as well with port and polish with a 3 angle valve job. He's dead on for the manifold but between the 2 you can easily see some gains and better flow especially depending on what you habe done ir are planning to do. I'm sure someone has the charts or has dyno after these type mods. I've done them on several other cars but not the cobalt yet. It's in my near future though once I finish the stage 2 kit from zzp. Eventually I'll get to the cam,head and valves.
My goal is to be at around 300rwp by Christmas if I can get there with the funds I'm working with .
My goal is to be at around 300rwp by Christmas if I can get there with the funds I'm working with .
04-23-2017, 03:01 PM
#8
New Member
Sorry for the delay was finishing the issue I had with the tps code. I got their 1in lowering set up which should be right on wit the way it sits now. Still ordering everything bit should be able to handle the power I have by the end of summer. Hopefully I can do good enough at work that the commission is enough to get it all done. Way my luck is everything will break first lol.
04-24-2017, 07:26 PM
#12
I usually port the outlets, as they are way smaller than the LSJ cyl head ports or gasket even. On my car, with no other changes, I saw boost drop, but never dyno'd.
The cores, as Mr. B said, there's a risk if you open them up more than you should. You want air to spend time in the laminova cores to cool. You can even them out and remove casting flash, but that's not gonna help much.
FWIW I do it on all the cars I do a dual-pass on, and my cars run harder than most. It's little things like this that make the difference. My stock-ish LSJ with ported TB, intake mani, and exhaust manifold was significantly stronger than other cars that were running same size pulleys and stuff.
The cores, as Mr. B said, there's a risk if you open them up more than you should. You want air to spend time in the laminova cores to cool. You can even them out and remove casting flash, but that's not gonna help much.
FWIW I do it on all the cars I do a dual-pass on, and my cars run harder than most. It's little things like this that make the difference. My stock-ish LSJ with ported TB, intake mani, and exhaust manifold was significantly stronger than other cars that were running same size pulleys and stuff.
05-05-2017, 07:10 PM
#15
Member
05-09-2017, 06:59 PM
#17
New Member
Weird thing is you can do yours and a couple others do their and the power will be very different for all of us that port and polish. Its probably why some say yes and others are saying its a gain but better to do more with it. The whole it makes it cooler easier is part of that gain you said you experience. Most people forget the few rules to making a car faster like breathing better, lighter or lightening car weight and spark etc.... any change is a good change lol.. Ask most folks what headers really do and they will say adds torque but don't technically know why it add torque..