crazy manifold idea

[D Money]

would it be possible to cut the upper intake manifold to make it shorter? It would have to welded after, and probably extrudehoned. would this be strong enough to work, i know alluminum is hard to weld. i hate the super long intake manifold on my motor, but don't want to spend money boostdesigns questionable intake manifold. thanks

[scotty-2-forty]

would it be possible to cut the upper intake manifold to make it shorter? It would have to welded after, and probably extrudehoned. would this be strong enough to work, i know alluminum is hard to weld. i hate the super long intake manifold on my motor, but don't want to spend money boostdesigns questionable intake manifold. thanks

Of course it's possible. You can use an aftermarket universal plenum to weld onto the runners. I used to do that with Chrysler 2.0 engines. Boostdesign's manifold is not questionable for the money. It's a good price for what you get, and it looks effective. However, I've seen much better designs using a rounded plenum and flush velocity stacks.

http://auto.howstuffworks.com/question517.htm

[madbouncy]

The intake is two parts. The best way I think would just be to take off the lower plenum, then cut the upper one just after the flange to connect to the lower one. Then cut again to take out however much you plan too. After that, you can just weld the flange back on. Plus it should be close enough to the end that you can use normal ways of sanding and getting the thing smooth on the inside since you'll be able to reach the spot. Then just bolt the lower plenum back on. Don't ask me how well it would work though, I thought about doing it too but I have no experience with intakes, so I can't give you advice on the actual lengths or anything like that.

[Structure240sx]

i thought about the same thing mad. i think ill fidn an intake mani to drop off at my uncles machine shop and see what they say. anyone with any opinions on this method?

[D Money]

after looking at the manifold it looks like the long upper runners will need to bent also. i imagine alluminum that thick would have to be heated pretty hot to bend enough. im wondering how much boost a manifold that is stressed that bad could hold.

[madbouncy]

I'm getting a ka24e intake, not so much to put on, but just to cut it and weld it back (really new to welding so I mostly just want the practice.) If it actually fits up I might test it. I figure if I just get an ebay intake and cut it to fit, I should be fine. I don't plan on bending it or anything, I figure everything weill hopefully still fit even if the lower intake is moved a little bit.

[D Money]

good luck, take pics

[welderguy]

Here is a intake manifold I am working on.

the runners on this manfold are made from the stock runners. I cut the runners down the middle and welded them back together in such a way that they are now tapered with a 2% increase in intake runner area per inch of runner (the stock intake runners are relitively laking in taper).

Eli

[WDRacing]

Thats awsome...

[virus77]

[egan]

I cut the runners down the middle and welded them back together in such a way that they are now tapered with a 2% increase in intake runner area per inch of runner (the stock intake runners are relitively laking in taper).

Eli

ya know, i dont think your username is very accurate...........

nice custom mani

[NX95240]

thats the first one i have seen like that . pretty cool

[crzycav86]

Time to weld up a turbo manifold to match that sexy intake... if ya know what I mean...

[D Money]

that looks just like i imagined it would. you should make some to sell. it looks awesome

[TheOne]

yeah where's the turbo? ya kinda missing the other important part:).

[welderguy]

ya I am missing the turbo....you guys dont miss anything. I am definatly planing to be turbo in the futer. In the mean time though I am planing to dyno it on a friends car that is turbo. That wayI will be able to see how well this desighn works.