RoyaleWithCheese

I worked using a SLS ProX 500 a few years back that printed in what was essentially Nylon 12. I think that would hold up well as the melting point is in the 175C range IIRC. I believe it has pretty good chemical resistance as well, so if you could get everything to seal up I don't see any reason why it would work for testing on an NA engine.

Not sure that printer would have been able to print it in one go but for sure could in a couple pieces. I'm sure that machine is old tech now and they have bigger and better machines that could pull it off in one print.

senior_squishy

@jt951 Check out this stuff if you get a chance: Taulman 3D Nylon 645
It's the closest thing you'll be able to get to a Nylon 6/6. Maaaybe if you ask nicely they'll have something like this to use for the manifold?

vt951

962 kid

Make sure you account for shrinkage with PLA. There is quite a bit as it cools.

senior_squishy

Usually only ABS is prone to shrinkage, but if he's having a 3rd party print it, they should be able to account for it. But yes, the tolerances will probably have to be changed for a 3d printed part, Alan. Depending on the printer, my experience is that it can vary anywhere from .005-.025" but they should be able to account for that if you're paying them that much.

962 kid

ABS is definitely the worst for it, but over this large of a span anything will be more noticeable. I've had lots of brackets printed in various materials before machining, and 0.005" is nothing but 0.025" is enough to keep things from going together. I just wanted to make sure it's pointed out - on many printed things, final dimensions are not critical, and I've found you need to make a point of asking for for this to be accounted for.

senior_squishy

I agree, and like I said before it really all depends on the accuracy and precision of their printers. On my cheap Chinese prusa I3 clone, it took me a while to be able to hold .02mm, but im sure a quality machine could do much better.

V2Rocket

For ABS I've heard of folks brushing acetone on the exterior faces to better "fuse" the print layers and smooth the finish.

senior_squishy

This is correct. Acetone smoothing is a good way to make ABS prints visually appealing, however, it's near impossible to maintain the mechanical tolerances and dimensions when doing this. Also, ABS is prone to layer separation, even when printed properly, and regardless of the surface finish. Modern PLA prints when designed right can withstand quite a bit of abuse, but for heat resistance, Polycarbonate and other special blends could be used as well. I don't see why a 3D printed intake couldn't be used for N/A applications, as long as they're made out of the proper materials.

vt951

I sent 25% payment to iAbed for all the CNC machined pieces of the Base Kit. For your planning, I would like to start collecting payments from everyone in 2 or 3 weeks, which is about when he should be getting everything done and ready to ship. So far, here is who I have down for a kit (there's still room for one more on this group buy).

RoyaleWith Cheese
JWebber
EastEnd944
Taymar
BoostBrothersGarage
senior_squishy
Chiwawa444
bb540

RoyaleWithCheese

I contacted SPA today to see when they will have the turbo manifolds back in stock for those who are going to go with that option.

They said it's about 2 months out before they will have them in stock online again. He said they have some ready in Brazil and could drop ship it if it's needed right away but I imagine that would come with additional shipping cost, plus time to go through customs, so it probably wouldn't gain much over just waiting.

vt951

JWebber

That is good news on the intake . Looks like a lot will be going on in the coming months .

MM951

$990?! I'm in.

JWebber

Guess it is time for me to contribute something . Seeing as how I am a 12 volt guy for a living , I went and picked up a complete 2010 07k harness and ECU from my local pick n save . I`m going to split the harness open and shape it to fit it`s new home . I will make notes and try to provide all the necessary info . Oh , and this only cost me $24 , with a $10 donation to Toys for Tots .