Guest Fliboi Posted April 19, 2013 Share Posted April 19, 2013 HI everyone, Im at the stage in my bike carb conversion where i need to make my manifold, and i want teh inlet manifold flanges made up for the toyota 18r engine, HOW DO I GO ABOUT THIS?? i initially thought it would be pretty easy, take an existing manifold or gasket, copy it, get it cut out. but now im told that i need to dick around with autoCAD and supply 3d drawing flies and all that shit, for a simple ~10mm thick plate with a hole in it. i downloaded cad and tried to have a play with it, assuming it couldnt be too much worse than photoshop which im pretty competent with, but nooooo.. fuck knows how anyone acheives even drawing a square to a pre set dimension. please help, because i dont want this to end up costing stupid money, when in the end, im quite prepared to just trace my flange on some steel and file the fuck out of it for a few days. Quote Link to comment Share on other sites More sharing options...
Guest Valiant Posted April 19, 2013 Share Posted April 19, 2013 ProMetal industries can do the drawing for you for a fee, I'd say Auto bend could too. High Tech Sheet Metal used to cut profiles based on a scan template, I don't know if they are even still about though. Your best bet would be to have a ring around on Monday. Quote Link to comment Share on other sites More sharing options...
Guest Truenotch Posted April 20, 2013 Share Posted April 20, 2013 Find someone with a magiceye profile cutter. They use a sensor to follow a traced line. See here: Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 20, 2013 Share Posted April 20, 2013 i was about to ask how precise they were and then noticed the holes in that piece of steel in from previous jobs, looks very precise! Quote Link to comment Share on other sites More sharing options...
Guest phib3r_0ptik Posted April 20, 2013 Share Posted April 20, 2013 If you can do a rough sketch of what it looks like with some dimensions on it I can make a CAD model of it for you if you want mate. You can then send that CAD file to a place that does CNC or water cutting. 1 Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 20, 2013 Share Posted April 20, 2013 that would be amazing man, im very capable of drawing a proper scale drawing with dimensions and everything, i just don't know how to use cad. Quote Link to comment Share on other sites More sharing options...
Guest phib3r_0ptik Posted April 20, 2013 Share Posted April 20, 2013 Sweet, no worries. If you can do that then either post it here or email it to mulholland.b@gmail.com I'll get that done Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 20, 2013 Share Posted April 20, 2013 this is why i love oldschool! Quote Link to comment Share on other sites More sharing options...
Guest eke_zetec_RWD Posted April 20, 2013 Share Posted April 20, 2013 How sick do you want the manifold to be? What I do is cut the port holes slightly small then bolt it to the head and port match the flange. Then build manifold off that. Means a near perfect fit once welded. Remember it will shrink slightly in length Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 20, 2013 Share Posted April 20, 2013 i had considered port matching. though what do you mean by Remember it will shrink slightly in length. this sounds like something i need to consider? currently im just drawing a scale diagram of the flange and inserting dimensions Quote Link to comment Share on other sites More sharing options...
Guest eke_zetec_RWD Posted April 20, 2013 Share Posted April 20, 2013 lets say the flange it 400mm long from port 1 to 4, after welding it might be 399.5mm long. just bear that in mind with the port matching Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 20, 2013 Share Posted April 20, 2013 ahh i see, cheers! Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 21, 2013 Share Posted April 21, 2013 Have sent phib3r_0ptik some images, not sure how usefull they will be, but one way to find out Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 21, 2013 Share Posted April 21, 2013 i found some software that would convert a traced line into a cad DXF file, and it seems to have worked pretty well, the lines were a little wonky, but ive spent the last half hour or so cleaning up the lines and it looks pretty good now, just want to know how i can check the dimensions of it? i was a scan of the manifold trace, so should be perfect. but im not 100% sure. also phib3r, the dxf file i sent you was really rough compared to what i have now, if youd prefer that one. Quote Link to comment Share on other sites More sharing options...
Guest phib3r_0ptik Posted April 22, 2013 Share Posted April 22, 2013 Sweet, I'll get onto that tonight or tomorrow. If there was a cleaned up one that would be handy Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 22, 2013 Share Posted April 22, 2013 sweet as, ill email it tonight when i get home. i think i can clean it up further too, for getting things cut, does the cad drawing need to be 3d, or just the template, which ive pretty much got now? Quote Link to comment Share on other sites More sharing options...
Guest eke_zetec_RWD Posted April 22, 2013 Share Posted April 22, 2013 Just 2d. Dxf. Just write the thickness in the file name so the person knows who's cutting it Quote Link to comment Share on other sites More sharing options...
Guest retep130 Posted April 22, 2013 Share Posted April 22, 2013 and a material Quote Link to comment Share on other sites More sharing options...
Guest Fliboi Posted April 22, 2013 Share Posted April 22, 2013 oh really? i may have just about completed this myself, provided its in the right scale, and format for the cutters. Quote Link to comment Share on other sites More sharing options...
Guest eke_zetec_RWD Posted April 22, 2013 Share Posted April 22, 2013 should be something like fliboiflange12mmsteel.dxf or .dwg be very carefull the lines that make up the drawing are complete and have no overlapping or short. easy to do if its a fucked up free hand/mouse drawn shape. its important, you need to zoom in on the joints and check. nothing worse than a shit drawing and then spending 20mins fixing it for such a small job. Quote Link to comment Share on other sites More sharing options...
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