Who's boring plastic MFI stacks?

[Tyson Schmidt]

I need to get a set of plastic 911T MFI stacks bored out to S/RS size.

I asked Henry at Supertec a while ago and apparently Aaron stopped doing it, and I don't know where else to turn.

Anyone else doing this?

[john walker's workshop]

Eurometrix maybe. Ask Mark Jung, 356rs.

[BURN-BROS]

Big changes for me , but I will resume this work this year. I’ll send out updates when I’m set up.

[BURN-BROS]

I’ll be moving into Retro-Sport’s 15,000 Sq feet of Porsche goodness located in the San Francisco Bay Area! Lots of work ahead to move in and get up and running.

[Henry Schmidt]

Originally Posted by BURN-BROS

Big changes for me , but I will resume this work this year. I’ll send out updates when I’m set up.

Great to hear.....it seems like I may have as many as ten sets waiting for the rocket man to return to earth. The Porsche world that is.....

[Tyson Schmidt]

Great to hear! Now take my money.

[Rosco_NZ]

May be able to help ..

[Henry Schmidt]

As much as the "Return of Aaron" is exciting, we're designing some tooling to make boring these stacks possible with our limited equipment.
We have a crazy inventory of MFI stacks, butterflies and pumps that need to find some updates to make them more adaptable to popular builds.

[Matt Monson]

Originally Posted by Tyson Schmidt

I need to get a set of plastic 911T MFI stacks bored out to S/RS size.

I asked Henry at Supertec a while ago and apparently Aaron stopped doing it, and I don't know where else to turn.

Anyone else doing this?

I’ve got a set that were done by Mike Bruns that I’ve been thinking of selling. We should talk.

[r lane]

If there is going to be a considerable demand and sounds like Henry may provide that, a CNC program would I suppose be justified. If you are just doing one, the only piece of equipment needed is a mill. I realize everyone doesn't have one, But in the various gear head communities, bet someone has one. I bored out a set of 2.2 mag stacks to 47-40 for a 3.0 track motor. My method was crude and primitive, counter to standard machining principals, time consuming, but I was amazed at the finished product. A very rigid fixture for the stack assembly, a 18'' sturdy boring bar, a fixture for a 1'' spherical bearing to support the bottom of the bar while the top is held in the spindle. All of these are made by you. The bit was 1'' with a taper to match the angle of the stack bore. Dropped it in 1'' at a time and made lateral adjustments to the bit for each cut. Finsished up with 3 tapered hones with 3 different grit surfaces. Very time consuming but the plastic stacks should be easier. Bob

[gereed75]

I am pretty sure that Karl at Thoroughbred Motorsports in Corty PA has tooling to do this.

[PeteKz]

Stacks would also be a good candidate for 3D printing.