Recommend a free CAD Viewer

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Thanks Marcin and Jeff. Jeff, I downloaded the program and Marcin I sent you the file for printing. I am hoping that it will give me a template for the gasket and manifold:
flanges.JPG


I had hoped to get other cad files for the design but only can find pics with no measurments. Maybe these pics are enough for a shop to give me an estimate and put one together?

exhaust11.jpg


exhaust12.jpg


exhaust4.jpg
 
or you can try this out:
progeSOFT: progeCAD Smart 2008
this is exactly the same as AutoCad, same functions, same features (actually more features) works fully with any AutoCad templates and reads all Cad files and makes changes and new ones just like Cad. Best part is that it's FREE!!!!
just register it for personal use and you're done! Not business, because then you have to buy their professional version.
Also if all you want is a Cad viewer then use this:
progeSOFT: Products catalog but I don't think they have a free version any more.
I've used it for a long time now and it works great.
Happy playing
 
I use to spend thousands a year for all the license fees for autocad, softdesk, LDD,etc
not bad for free
anyone want to buy a 3' wide plotter? you can use it to print out full size patterns
 
you want equal length flowing tubes
 
canucksafari said:
I suppose that the degree of the bends will also have as much of an influence on air flow as the different length of the tubes, no?
Click to expand...
That would be an issue in a different engine then yours, diesels are a bit different then gassers and little things like a header don't make as much of a difference on them as they do in a gasser - due to different pressures and RPM range. If you look at gas race engines the proper headers have all pipes almost equal length, sometimes they need some more bends to fit them in there but the lengths to where it combines are the same. There it is noticeable, also the engines are balanced, and cranked to the max where every little detail can mean a difference of horse power - here you don't have that issue. IMHO
I went from the factory exhaust (2 1/2 at engine to 2 by the tail pipe), cut it in half and went 3" all the way, I didn't notice any significant difference.
 
canucksafari said:
I was wondering about that Mat because the aftermarket cast turbo manifolds have the flange in the centre. Pressures wouldn't be perfectly balanced there either.
Click to expand...

that's the reason why headers are usually better (not always though)
I'd be more worried about heat build up in the tight bends. I doubt tubing can be bent that tight
 
when it comes to headers it's all welded sections due to the radius, I still don't know how they manage to do turns that tight on those either. The weld on Schedual 40 90s I picked up have an 1 1/2" radius, on a pipe that size the bender they use must be amazing.
 
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