current setup: 2003 eco

custom cold air
ported tb
port matched intake manifold
pacesetter header
custom 2.5" exhaust
rksport pulley
fidanza short shifter

i have a friend who is a professional welder/fabricator by trade. we are thinking of making an intake manifold. something to keep the stock throttle body location. possibly a square manifold with individual runners. is it really worth it to take the time to build this thing or is it just a waste of time and money. it will only cost me the sheet metal so it won't be too expensive, but am i going to see any real gain. and another benefit would be a nitrous port built in??

just curious before i spend a weekend on this project.

I don't know if it'd be a really good gain on your car, but i can assure you when i upgraded to a 2.3l manifold on my 2.4l, i could definately tell a difference, it sounded alot more throaty, i loved it! I'd say do it, sheet metal isn't that expensive, so it'd be a trial and error kind of deal. Remember: TAKE PICTURES OF THE BUILD!


NEW SIG COMING SOON FOR 07'!!!

Try it and if it doesn't help, sell it on ebay!!! lol



2004 Cavalier
13.2@105........
Mods...
BFG Drag Radials
Saab Turbo kit
2.5 exhaust, w/cutout
Spec Stage 2+ Clutch

i got a question, i just got a turbo and intercooler from a friend he had a 2.0l engine and he gave me the turbo manifold for it but hes not sure if it will work on my car or not (i have the 2.4L) so what should i do with it should i sell the manifold and get one that fits or what?

Matt Brown wrote:i got a question, i just got a turbo and intercooler from a friend he had a 2.0l engine and he gave me the turbo manifold for it but hes not sure if it will work on my car or not (i have the 2.4L) so what should i do with it should i sell the manifold and get one that fits or what?

that would be a Boost forum question.

On the manifold. I really don't think it would be worth your effort the stock manifold is capable of a lot of flow.

Your current mods are pretty close to what my car is running. The natural progression from here for more power would be tuning, and a turbocharger. Anything more you do isn't going to yeild great enough gains to make it work the time or money IMO


-Chris

I am assuming you are talking about the 2.0 from a sunbird and that you have the LD9 (2.4 Twin Cam). They are completely different motors and the exhaust manifold bolt pattern is different. You can get a turbo log style manifold from this guy

I have heard good things.