intake manifold

[droptopboost]

So i was looking at a better intake manifold and i was wondering it it would give me a hp increase i could feel like the downpipe did!

 

[LordZed]

Looking at your mod list, I would doubt that an new intake manifold will really be felt substatually. But flow is flow and it will make some difference. If you're planning some extra power in the future it will be a nice addition.

 

[xioca]

It'll only allow you car to breath better up top, no real h/p gained. Just like your downpipe didn't really creat more h/p, just allowed you engine to breath better. It's all realative to your mods and your particular vehicle.

 

[xioca]

maybe as much h/p as that 3 piece wing... j/k They really need a section for body mods.

 

[oldman]

So i was looking at a better intake manifold and i was wondering it it would give me a hp increase i could feel like the downpipe did!

Without a Thrust shift knob, you won't be able to see the full potential of a manifold.........wait, you do have one.

Like already said, manifold is a little too early for you right now, you could however look into 1G head/manifold/TB combo if you can pick them up for cheap.

http://www.dsmtuners.com/sub.php?page=2gtupgrades

 

[c4uldr0n]

with a sheet metal intake, you will gain up high but loose some low end... without a big turbo and cams I wouldn't recommend it...

 

[Cs4g63]

Plenty of people have gone fast without having to switch out there intake manifold to a SMIM. I would use the money you would spend on the manifold on something else that will show more gains with where you are at for now.

 

[LordZed]

x2^^ good suggestion.

 

[xioca]

1g intake manifolds are dirt cheap, probably just have to pay shipping for one. There so damn hard to get rid of.

 

[daren_p]

Im with the others, there are alot of other areas to better spend your money as you are a long way away of needing a SMIM. A SMIM helps your topend flow so you don't start to see gains till say the 5500 or so rpm range. By that time your stock t25 has already run out of breath & cant keep up with the stock IM. A SMIM should be one of the last items on your list & like I said, geared towards larger turbos. So it may not be the best route for someone only planning to run an evoIII. If you want to help you motor breath better afer you get that new turbo, a set of cams would be a much wiser choice. The stock 2g TB is pretty restrictive so a bored out model or a 1g swap will help your top end.

 

[LordZed]

1g intake manifolds are dirt cheap, probably just have to pay shipping for one. There so damn hard to get rid of.

Hey xioca,
What's that in your garage burried in stuff? A 76 Vette?

 

[oldman]

1g intake manifolds are dirt cheap, probably just have to pay shipping for one. There so damn hard to get rid of.

Not a good idea unless you have a 1G head.

 

[xioca]

Oldman, all you would need to do is slightly port the head to match the 1g intake runners right? I've not dealt with 2g heads, but I thought thats all that was required.

Hey xioca,
What's that in our garage burried in stuff? A 76 Vette?

Thats my dad's 75 corvette. Hope to make it into a little project this summer. 2 new bumpers and a carb. rebuild should make it. Now only to convince him to let me turn the garage into a spray booth for a week. (fully sealed in plastic of course.)

 

[oldman]

Oldman, all you would need to do is slightly port the head to match the 1g intake runners right? I've not dealt with 2g heads, but I thought thats all that was required.

No, a 1G manifold runners are way too big for a 2G head, too much velocity will be lost if you were to port match a 2G head to 1G manifold.

 

[daren_p]

Oldman, all you would need to do is slightly port the head to match the 1g intake runners right? I've not dealt with 2g heads, but I thought thats all that was required.

Like oldman said, defently not a good idea. There is a pic on here somewhere floating around that compares a 1g to 2g intake mani & also another comparing the head inatke ports. If you saw the comparison of the size differences, you would eaisly be able to tell why porting the 2g head out that much to match the 1g intake mani is a bad idea.

 

[xioca]

Alright that makes sense, I always thought a 2g to 1g intake mani swap was common place. i shouldn't assume things. Thanks for clearing that up for me though.

 

[daren_p]

Alright that makes sense, I always thought a 2g to 1g intake mani swap was common place. i shouldn't assume things. Thanks for clearing that up for me though.

2g to 1g throttlebody is a common swap & is easily done with some porting of the IM inlet but 2g to 1g IM's should only be swapped with their corresponding head .

 

[always_broken]

So just swapping a 1g tb is it then if our mods are low? No use of doing the intake mani ### I seen the pictures.

http://vfaq.com/mods/1G-2G_intake.html

Scroll down.