Paul TVR
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| posted on 8/8/17 at 09:53 PM |
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3D printed inlet manifold
Hi there, wondering if anyone here has successfully printed an inlet manifold?
I know it's possible, I have a friend with a printer I can use but struggling to find a material it can print which will be suitable.
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r1_pete
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| posted on 8/8/17 at 10:33 PM |
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This Chap tried it for some tb adapters
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Badger_McLetcher
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| posted on 9/8/17 at 04:52 PM |
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If it's below the injectors be careful of porosity - you don't want it soaking up fuel! You could always give it a coat of something to
seal it of course 
If disfunction is a function, then I must be some kind of genius.
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David Jenkins
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| posted on 9/8/17 at 05:14 PM |
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As above - first of all, try soaking the material in petrol for an hour or three to see how it reacts. Next, work out what temperature the material
will have to withstand, then add 50% (or even 100% to be sure). Look at the specification for the material to see whether it would remain rigid at
the target temperature. Note: don't look at the temperature at which it will soften, rather look at the
glass transition temperature. This is the temperature where the material loses its
structural strength (it goes floppy) rather than its melting temperature.
I have seen many internet postings where people have decided to make engine components using 3D printing, and everyone gets the same reply - very few
3D printing materials will withstand the temperatures in an engine compartment. Where 3D printing DOES triumph is to make patterns for casting - make
a pattern, make a mould from the pattern, use the mould to cast the part using better materials.
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ettore bugatti
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| posted on 9/8/17 at 07:25 PM |
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I think SU carbs had some SLS printed intakes on their stand on the last Autosport show (or maybe the one in 2016), but they only used it for dyno
testing.
Was it not even common to use wood as cylinderhead material to develop heads?
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coyoteboy
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| posted on 10/8/17 at 12:02 PM |
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I've been with a team who did this and they had a nightmare getting rid of porosity on most materials (totally screws up your AFRs), then they
used SLA to make the final item but still only ran it for dyno testing, then got one machined from it.
I'm sure there must be materials and processes suitable though, maybe wesbrooks on here will pop along and make a comment?
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