Intake Manifold Modifications.....

[flat_black]

Hmmm... Hey, DSM, since you've got mendrel bending facilities at your disposal, care to quote me up a few bends? I think I have an idea going...

Basically, a straight section of 3 - 3.5" tubing to be used as the plenum, then eight small (I'd have to measure up the size to be sure, but I think 1.25" would be the larger of the two; One would be oblong, though, or I would have to port out the other runners to taper down to the original size) runners.

I'll have to find someone to make a flange with all the proper holes so I can bolt it up, too, but what I'm thinking is something like that, with dual runners, and the plenum, which bends off at the end to accept the throttle body as well, and just bolts up to the upper intake manifold section. This would be a bit of a pain in the ass to do, but it might be worth while... Who knows! I'll have to hit up one of my friends with a welder, too, so he can first teach me how to weld, so I can do it up on my own. Hehe.

Just an odd thought. I might scrawl together plans tonight.

 

[twilightprotege]

i'd be interested to see your plans!

DSM - yes it's a big big job. but would surely be cheaper than a new manifold. dont forget that there are plenty of excel spreadsheets etc around that tell you what runner lengths etc are best for what rpm etc

 

[Focus]

This is truly awesome. A creative thread, with no flaming, bashing, ass kicking, you get my point.

flat_black, I would like to see your idea on paper. Also I will ask the guys at the shop here what they did for intake. The protege they just built up ran a 10.07 finally, and it's still in the tuning stages!!!!

 

[twilightprotege]

true dat.

another idea rather than making the VICS chamber into the shorter runner of a dual runner setup, and this is something you can do pretty easy.

make the chamber bigger! afterall it's the extra volume that makes the runner act like it's a shorter runner. even more volume should make it act like an even shorter runner.

waddia think?

 

[TurfBurn]

and turf, you do have VICS, you dont have VCTS (the tumble system)

but guys, just like what wrench said, it's a lot of work, but the potential pay off could be huge!

No... I don't actually I have no way to control it because I don't have/use the stock ECU. So the baffles are just in the way for me... I'm removing them if they are not already removed on the modified mani I have.

 

[twilightprotege]

i c.

maybe you should think about getting the ecu to control it. shouldnt be difficult

 

[TurfBurn]

I think I my have a spare auxillary output that I could use to trigger it... the question though is it really worth having in there for a car that although daily driven, is mostly being built for racing.

 

[thewrench]

Turf- you might want to try to see if Green MP3 is still around on the boards. IIRC, he removed the VICS and reported horible drivability results. That may not be an issue for you but you could try to find some of his old posts to see what to expect. Also, bear in mind, the SWC cars strarted out with the stock mani with all butterflies removed, but have since gone to fabricated manis.

 

[TurfBurn]

there was a post by a probe guy elsewhere on the forums recently that he is using an MSD toy that will turn on at a certain number of rpm's and open those butterflies up. I may have to try that, or see if I have an auxillary available on my Microtech for doing the control.

 

[flat_black]

Well, I got a crude-ish drawing of what I was thinking of at home. I'll CAD it up at some point, just to make sure it's reasonably viable of an option, but I think I've covered everything, including retaining the EGR and vacuum functionality (There's only two vacuum ports on the lower portion of the manifold).

 

[DSMConvert]

hey flat yea just get me the info, size length, angles and I'll see what i cant do...a CAD with cartesians would be great, but if not then just lengths angles and a crude drawing would work....if you can get me a trace of the flanges you need, we also have lasercutters we can have tackle the project....heck we have a tig welder too so if I could get all the info i might just be able to start making these damn things....

 

[flat_black]

Hmm... Very good point! You have a shop, and I have a house that I'd end up filling with metal shavings. =) Hehee. I'll see how fast I can cad the thing up. I'll probably be doing it in solidworks, so I should be able to export things pretty much any way you need them.

 

[TurfBurn]

ahh.. much love for solidworks another user! What do you do for a living flat?

 

[DSMConvert]

cool...now I still need to also get my hands on an actual manifold so someone sell me one...

 

[TurfBurn]

My manifold is officially claimed at this point, I can't sell it . I was hoping! But no go.

 

[flat_black]

I should be able to sell the other one to you, but I'll find out for sure this weekend, presumably. I'll trade you for my number 6 pipe!

Turf: I'm a UNIX systems administrator, actually. =) My roommate is a mechanical engineer of over 10 years, though, and he tought me how to do all of the CAD stuff, as well as how to work various bits of machinery around a machine shop.

He's really, really amazing at what he does. And fast! I'm just kindafastish. Sorta. =)

 

[TurfBurn]

I should be able to sell the other one to you, but I'll find out for sure this weekend, presumably. I'll trade you for my number 6 pipe!

Turf: I'm a UNIX systems administrator, actually. =) My roommate is a mechanical engineer of over 10 years, though, and he tought me how to do all of the CAD stuff, as well as how to work various bits of machinery around a machine shop.

He's really, really amazing at what he does. And fast! I'm just kindafastish. Sorta. =)

I'm an ME that does EE work as well as ME work... I'm not very fast at the drafting... but I know it pretty well . I have two older brothers that are ME's though and are SICK when it comes to drafting speed. Drafting and machining are so much fun and such great skills... I want to get welding down next!

 

[flat_black]

Hee! Yeah, me too, actually. =) Welding is at the top of my list for new skills, especially welding aluminum, which I understand is a real b**** to do right. =)

 

[MSP Chris]

Man two days go by and 3 pages are up..lol.

 

[Focus]

Here is one picture I got showing the removal of the hump and knife edging inside.


(canada)