A Bit More Progress

[choppinczech]

Thanks for all the kind words everyone.


This is what the 1/4" groove is for. I'll epoxy it in along with the two halves.




I made the groove by rigging this up. The coarse narrow sanding drum with the depth bearing left a really straight and consistent groove.




Mounted in the table and powered by my cordless drill with a zip tie on the trigger.

 

[butch27]

I can't believe some of the stuff you do. NICE

 

[AusBucket]

I tips me lid Sir, damn nice work, to me it's the most interesting thread on here at the moment.
Regards,

 

[choppinczech]

Thanks guys.

I'm on to the screen and aluminum bezel now. I want to dry fit everything before anything gets epoxied together.

I roughed out the bezel on a scroll saw and wasn't happy with the size of these half circles at the mounting points. I wanted them not too much bigger than 1/4" screw heads and was absolutely dredding getting after them with hand files.



Then it dawned on me that I could use the mounting holes as pivots. I chucked a stout 1/4" bull nosed router bit into my Redneck Mill and cranked it up to 3,000 RPM. Just took small (and I mean small) plunging bites, rotating up to my scribe lines.




A big bonus was the nice inside radiuses. I couldn't have ever done this with hand files.

 

[cooter]

You're a master builder.. Amazingly talented. ..

 

[MichBucket]

Awesome work! I used to be into Fieros and on the Pennock forum (for Fieros) there is a guy that goes by the name of Car-Lo. You and him must be related....you both are extremely talented! If you have a sec go to the forum and see what he is doing with an 88 Fiero.

Pennock Fiero Forum - Construction Zone - RBS In-Limbo

 

[choppinczech]

Aside from a little more body work this scoop is done. Came out pretty good. But it was way, way more work than I had anticipated.

 

[cooter]

WOW!!!!!

 

[choppedtop]

I'll second that remark, Cooter!

 

[409T]

The concave curve on the bottom face of that scoop adds a lot of interest. Usually they are flat across the bottom, I like yours much better.

 

[choppinczech]

The concave curve on the bottom face of that scoop adds a lot of interest. Usually they are flat across the bottom, I like yours much better.

Thanks.

Viewed from the front it goes well with the shape of the windshield frame, firewall and radiator shroud.

Plus it gives me a little more room with the water filler.

 

[Gerry]

You Sir, are an artist.

 

[AusBucket]

That is SO Nice! only other comment is that the perforated steel you've used across the inlet has reduced the intake area by something approaching 40%. It's amazing how much a lot of meshes reduce the airflow.
Regards,

 

[choppinczech]

That is SO Nice! only other comment is that the perforated steel you've used across the inlet has reduced the intake area by something approaching 40%. It's amazing how much a lot of meshes reduce the airflow.
Regards,

Yea, I'll have to wait and see how it does. It's the same mesh I have over my radiator.

They're 1/4" holes. I pondered over opening them up a bit with a 7mm step bit.

 

[Spanky]

Before you do that, I would calculate the area of the holes vs the area of the carb throat. You may be surprised.

 

[choppinczech]

Before you do that, I would calculate the area of the holes vs the area of the carb throat. You may be surprised.

That's a good idea.

 

[choppinczech]

Before you do that, I would calculate the area of the holes vs the area of the carb throat. You may be surprised.

With the 1/4" holes I'm at 77% of the 5" carb throat.

If I were to change the screen to 7mm holes it'd be 94% of the 5" carb throat.

I wonder how much the air filter changes things? I mean how much air actually gets to the carb through the filter?

Is the 77% screen sufficient? Or do I need the 94%?

 

[Intrepid]

I can't remember exactly, but I seem to remember K&N commercials bragging about 90% airflow compared to other air filters.
Probably easy to look up.
I would think if you have a 33% airflow restriction from the intake, and another 10% restriction from the filter it would hurt performance and run rich.

 

[gif]

your attention to detail is off the charts. i envy your glass skills.

your door hinge reminds me of how a gas filler door hinge works.

 

[AusBucket]

The air filter is doing all the filtering, you probably only need a very open wire mesh across the front to keep hands etc out. I'm thinking 2 horizontal wires and 3 verticals in a 3 mm (1/8") wire with the horizontal wires shaped to the top and bottom profiles. Would be wicked.