andrew-theasby
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| posted on 7/11/04 at 02:07 PM |
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manifold wall thickness
I have a big box full of mandrel bent stainless tubing in different sizes and angles which i was going to build my manifold with but after a bit of
searching it seems most people are using 18swg and the stuff i have is mainly 22swg. Will this cause a problem or is it just cause its easier to weld
and bend the thicker tubing? I suspect it may crack with time, but is it worth the effort seen as how its free 
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NS Dev
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| posted on 7/11/04 at 09:43 PM |
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as far as I know it's just the ease of welding that's the issue. As long as you reinforce the pipes where they join the thick manifold
plate to stop cracking there you should be ok. Have a look at the way Vauxhall did it with the std manifold, the bent plates under each runner stop
the tubes cracking off.
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Simon
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| posted on 7/11/04 at 11:42 PM |
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Andrew,
I used 16swg (approx 1.6mm) but that was mild steel.
You may get away with it. As you've already got the box of bends, you might as well try it!
ATB
Simon
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rocket
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| posted on 12/1/05 at 10:05 PM |
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never use less than 18g. 16 is best for st/st mild should be 16g/14g as it has a lower melting point. anything less than 18g will have a tendency to
crack within the first few runs.
Rgds
Roger www.shinybitz.co.uk
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