Has anybody does this? I'm considering some runners either a mold to be epoxy filled or to coat in fiberglass.

This image is a beautiful model I did METICULOUSLY scaled for perfect dimensions.

 

go on facebook, there are several automotive 3d printing pages
people are printing entire intake manifolds now
here is a screen print of google

 

No, specifically TPI. Has anybody done it? Or do I have to?

 

100% sure youll have to

 

No Measurements done, just basic flanges from pictures. Haven't pulled out my extra runners yet.

Seems like It'll be relatively easy.

 

There is a guy on this site that has done extensive 3D printing of TPI intake manifold components. To save my life I can't right offhand remember his username though.

Also way back in the day a company made plastic TPI intake manifold components. I think the upper plenum, runners, and maybe the throttle body too. I don't think the lower intake manifold base though.

I actually replied to a thread maybe 1.5 to 2 years ago about it and posted a picture or two with one of them being the magazine cover of one of the car magazines back in the day with them on the cover.

EDIT: The September 1990 issue of Car Craft magazine (Vol. 38, No. 9) featured "The Best in Induction Madness" on its cover.

It's the bluish TPI intake in the center with the SLP style runners. It was made by a company called MRP (Modified Research Products) in Fenton, MI and they made the throttle body, upper plenum, and runners.


Car Craft magazine.

Vette magazine.

 

I am a hater.

But OP, you're going to do something, make it like the 2nd row, 1st column. And make a lid that looks like a tortoise. There really is no need for TPI runners.

 

no.

 

That’s cool. It’s too bad I’m a decade or 3 late.

The design I did today was 42mm (1.65”) ID with a 2” Siamese to attempt to keep TPI feel with 300-400 more rpm. Or so I hope. I could make them enormous if I extend the bolts I think but that’s not needed for me. Probably need to make the ID larger to account for internal coating tho.

 

Check the thread under the TPI section titled My Custom Ported H/C/I…. I believe the guy who did the 3D printing posted in there a few times and had a picture of a stack of different runners he printed for testing. Tried to copy & paste a link but can’t figure that out lol

 

@SuperZZ4

He has PRINTED A PLETHROA of TPI runners and variations thereof to see if he could "solve" the TPI problems but still have "TPI".


Ha ha ha, don't sweat it....me too.



If you search the thread that I linked above, there is a section where he delved into siamesed runners, their flow and the problems. In my "10x the Tork Take Too!" testing, AS&M Siamesed runners and a big mouth base didn't gain me any RPM on a stock long block. Maybe 100 RPM. But tq went up in the same RPM ranve, by ~35 across the range, from 1500 to 4200 or so.


.

 

Thanks, it took forever to find his stuff.
https://www.corvetteforum.com/forums...post1606939574

 

Yeah, I was thinking it was from the @MrIROBZ "I'm going to take my ball and go home if you all don't show me more respect for everything I'm doing for you all." thread.

I wonder how his build turned out. Did he finally figure out you can't turn a sow's ear into a silk purse with a stock appearing individual long tube runner TPI system?

 

Ha ha ha....no kidding. I don't think I've ever seen someone "Quit the forums" for such a minor if not totally benign reason. Oh well.



Yeah it's a HUGE thread but probably the most tech loaded, with objective results, thread I've ever seen on forums. That guys is the MAN.

 

My opinion.

If one wants to make an improved stock appearing Tuned Port Injection system one has to forget about C4 Corvette hood clearance and the large cap HEI distributor.

To me TPI looks like stock TPI, TPI looks like a Day 2 mod TPI with AS&M large tube runners, AS&M siamesed large tube runners, SLP siamesed runners. Anything that visually looks much beyond that to me isn't Tuned Port Injection anymore. It's something else.

The power is in the lower intake manifold base and raising the powerband is in a shorter tuned runner length.

Improvements can be made to the plenum for cylinders 5 & 7 by designing it to only clear a small cap HEI distributor. Cylinders 5 & 7 rob each other of fuel/air charge and man is it all pinched up on the plenum by 5 & 7.

The lower intake manifold base is too flat at the port entry angle into the cylinder head. It sucks on a stock TPI base and is made even worse on a Vortec TPI base because of the Vortec head's taller intake port.

The TPI lower intake manifold base needs to be 3D modeled then grab the entire middle section and pull it up as high as possible so it still fits a TPI system under the hood of a 3rd gen Camaro or Firebird.

 

Only infraction I ever got on the site was when I told him what I thought about his "Take my ball and go home." attitude.

 

Geeze. That sucks. I don't see how you were out of line at all.

I wonder if MrIroc was also "Corvette-ZL1" on the 'Vette forums. Pretty sure he contributed to my getting banned for a month (+ a sloppy, thoughtless mod) back in the fall of '23....No name calling (on my part), no insults -from my end, at least....Banned for a month. I haven't contributed there since.

 

Oh no, I had it coming. Some replies went down the memory hole and others were edited to be "nicer".

 

https://www.facebook.com/share/1ABFe...ibextid=wwXIfr

 

Steve Morris Racing Engines is currently doing dyno testing with a bunch of similar manifolds including a 3D printed manifold to see how different or similar they are including tuning for each one. He was actually impressed with the 3D printed manifold but its still in the design stage to it could get even better. Same engine on the dyno. Same carb, tuned for each manifold. Just doing a manifold swap for each one. First pull was with an out of the box aftermarket manifold to get a baseline. Second pull was with an identical manifold that was CNC ported and the engine gained about 30 HP.