STOP YELLING! lol. your not going to feel any noticable difference with either setup. They are supporting mods. I switched from a stock 2.4 tb to a 57mm 2.4 tb and felt no difference. kinda makes a neat whistle though. Put the 2.3 tb on the lo intake and call it done. when you do other mods these will aid in them making more power. Every engine part works together to make power. you can free up your intake with the tb and manifold but without bigger cams a header and freeer flowing exhaust you wont notice the difference. all together they make nice power.
Thats wierd. I could possibly see a loss of down low for a gain of up top but I cant see it being more than a few hp on either end. The consensus on this site is LO manifold is best for a fairly un modified 2.4. Every engine reacts a little different. Ive never personally used one. Mine has an HO manifold but I plan on using bigger than HO cams. You could try the 2.3 tb and 2.4 manifold, sounds like you already have them so it wont cost a lot to try it.
The L.O. and throttlebottle should net you -2hp on the low end and gain in the upper end and with the cams.......a fun night out at the beach
"As I lay rubber down the street, I pray for traction I can keep, but if I spin and begin to slide, please dear God protect my ride." -Amen
is the LO mani port matched to the head? are you using an adapter falnge? do you have a bigger exhaust?
to do it right you should pull the head and port it. port match the mani. throw some cams in it. header and bigger exhaust. and the pcv hole on the head is the tricky part. it seems everyone has done it different.
Jared Jones wrote:not using an adapter flange and i do not have bigger exhaust good advice though and all i did was leave that pcv hole open since it is only for pcv. modified the 2.3 manifold gasket.
you also need to port match the mani for best results. and try to get a adapter flange because there is a good sized lip on the bottom of ports and dremel out the flange so its an even flow.
i dremeled the flange out more than in this pic
Jared Jones wrote:are the cams for the swap going to be enough to notice the power difference and bigger exhaust?
i'm not for sure yet. i just recently ported my head, tapped pcv hole with 1/8npt waitin for tap to do mani, installed header, secret cams, and HO mani. i still need the rest of the exhaust. and my license too know for sure.
Start with a header. After that a full 2.5" mandrel bent exhaust, high flow cat, resonator, and the muffler of your choice would be best setup for you. some might say 2.25" exhaust would be better but its really what you think is best for your engine.
As you can see from the above pictures, anything short of a Fontana Phenolic Adapter flange or an aluminum LD9 flange welded to the H.O manifold, you are going to lose power, period.
That is far from a port match and there is nothing to gain from putting the LGO Manifold on a LD9 without the proper flanges matched 100%.
It doesn't matter what TB you put on - no proper flange or adapter = power loss, especially down low.
No amount of dremeling is going to make the 2.3 flange work, as you'd have to ADD material to it to get the proper shape to the middle part of the B. The material is simply not there.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
Not at all.
What I'm saying is unless you are going to do it right and find an aluminum LD9 flange and weld it to your Intake Manifold, or find the proper Phenolic adapter, you are wasting your time. Gains will be little or none.
If you have the manifold flange issue solved then yes, a 2.3 throttlebody will yield better gains for you.
If you're looking for some gains, start with the exhaust side. It's pathetically restricted.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
They are no longer made and hard to come by.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
Quote:
That is far from a port match and there is nothing to gain from putting the LGO Manifold on a LD9 without the proper flanges matched 100%.
It doesn't matter what TB you put on - no proper flange or adapter = power loss, especially down low.
No amount of dremeling is going to make the 2.3 flange work, as you'd have to ADD material to it to get the proper shape to the middle part of the B. The material is simply not there.
-Chris-
I agree
Quote:
What I'm saying is unless you are going to do it right and find an aluminum LD9 flange and weld it to your Intake Manifold, or find the proper Phenolic adapter, you are wasting your time. Gains will be little or none.
Agree with that too
Something like this?
-M
Remember....syringes go in the RED waste basket.
I have an Adapter flange sitting on top of an LO manifold next to my computer and noticed the offset problem myself...
Heres a pic...
I thought about just bolting it up that way but cant make myself do it... I highly doubt that theres enough metal in the manifold to port match it and its starting to piss me off LOL
I am 100% sure however... that im not going to screw with the head on the car.... my best bet would probably be to look for an HO manifold (wich I assume will line up) but I'd really hate to since I already have this one
Quote:
that is a hella HO mani...i like, beside the afro engineered gasket..lol
haha, yeah, its ghetto fabbed.
-M
Remember....syringes go in the RED waste basket.
This is why I dont dabble with LD9's anymore....
LG0-W41 only for me.
Chris
'02 Z-24 Supercharged
13.7 @102.45 MPH Third Place, 2007 GMSC Bash SOLD AS OF 01MAR08
