CNC machined Six Pack air cleaners

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kenelder

kenelder

70 340 4spd 6 pack
Joined
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Largo, Florida
Hello everyone, I wanted to share pictures of the new billet CNC machined Six Pack air cleaners that were just prototyped. One for each carb instead of a single oval. The filter area is larger than the carb throat area and the base plates are all machined with smooth "venturi" like curves into the carbs. These are all 6061T6 aluminum and the swirl marks shown in the photos are very small and could be polished out easily.

These are mounted on my 1970 Dart and the front carb clears the hood by 1/2". We may need to lower them a little for more clearance. And yes all three are the same dimensions which is why the front air cleaner appears to be spaced farther away than the other two. It is possible to shift the bases so they look even, but then each air cleaner would have a different base plate which is not a great idea for production.

Before we modify the CNC files I was hoping to get any comments or feedback anyone cares to share. If this is a bad idea, please feel free to share those thoughts too!

If there's enough interest then the company may make a production run in the near future. Interest will determine how quickly they are produced, a lot of interest will result in production this year.

I know- everyone wants to know what these will cost. Being prototypes the numbers are not in for production runs yet. I'm guessing they will run around $600 a set for small volume runs.


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I like the idea, especially since I've been thinking myself that I'm not crazy about the huge oval air cleaner that covers the entire engine. My opinion and personal take is that the uneven spacing would drive me crazy enough to not buy this setup.
 
My opinion is there is not enough gap between the center carb cleaner and the rear carb air cleaner and they will be restricted of airflow from that direction... If you could copy the spacing between the front and center carb air cleaners it would look and perform much better, even if you have to make the rear one unique...
 
Excellent information! We can look at modifying the bases to evenly space them.

It's too bad Dodge had the carb spacing staggered. I think they did it for the ability to remove the carbs individually. The center carb would require either end carb to be removed if the spacing was equal. Maybe there's another reason, I'm just guessing.
 
kenelder said:
Excellent information! We can look at modifying the bases to evenly space them.

It's too bad Dodge had the carb spacing staggered. I think they did it for the ability to remove the carbs individually. The center carb would require either end carb to be removed if the spacing was equal. Maybe there's another reason, I'm just guessing.
Click to expand...

the reason the carbs look staggered is because the center carb has a metering block. hence the front carb is farther away from the center one.
 
Didn't think about that metering block thing, you are probably right. I wonder- I have heard the GM & Ford 3x2 using the Holley 2300 had different spacing. They may have made their intakes for 3 carbs with metering blocks.

Since these were all done in CAD modifying the baseplates for equal spacing is straightforward but like everything takes time to verify the toolpaths, etc. Good project for next week!!
 
Just slightly off the subject...has the company given any thought to single-4 bbl. billet CNC machined air cleaner assemblies?
I would think they would have a much larger market.
 
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krazykuda said:
My opinion is there is not enough gap between the center carb cleaner and the rear carb air cleaner and they will be restricted of airflow from that direction... If you could copy the spacing between the front and center carb air cleaners it would look and perform much better, even if you have to make the rear one unique...
Click to expand...

I have to agree with KrazyKuda especially when the filter's get dirty, restrictive on the sides and rear of the rear carb then it will be sucking through the front and taking air from the middle carb. If that makes sense to you. I like the velocity stack but if you move the filter back you will mess that up on the rear carb. Maybe move the rear back a little and the middle forward a little ? Those filters are small and I see them getting dirty pretty fast.
 
Exactly- middle forward a little and rear one back a little.

We just started with the six pack cleaners because that’s what I have and was tired of the homemade flat plate cleaner I was using. If there’s a 4 barrel cleaner that’s needed we can certainly make them. We are planning an oval for the six pack too. Just a matter of time!
 
Raise the height and stagger the opening
Easy
I’ll do it for you guys if he won’t. It’s a cakewalk but I don’t won’t to take away from him
 
How about putting a lip on the outside perimeter of the top lid so the center could be painted?
 
I completely disagree about the airflow issue. I think it's a non issue. The middle one forward just enough to even them up and you got a winner. I normally don't like bling but those are pretty cool.
 
What about single round ones?

I do like that idea about the oval one.

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“Raise the height”: any higher and it won’t clear the hood on my Dart. Can raise them for other cars as long as there is hood clearance. We can lower the bottom but haven’t found an easily available air filter element. The air filter area of them is a lot larger than the carb bores so flow should not be a problem.

A lip on the outside is simple, we can do that. I’ll add to wish list.

Can do round air cleaners but the filter area is smaller than the square filters. Would more folks buy them if round?

Please keep in mind we would like to meet everyone’s needs and at the same time we need to make production runs to keep price as low as possible. If there’s enough demand we can do almost anything.
 
They do look nice. I think that it's a personal thing, it's what you like or you think that it looks good. I am sure that they would sell. For me personally, I like the big single air filter.
Good luck with it!
 
Beautiful workmanship, but I think those air cleaner elements could be restrictive on a high HP engine.
 
They will be as restrictive as any other air cleaner- they use the low restriction cloth type filter and the filter area is a lot larger than the carb bores…..
 
We've had a lot of comments on the filter spacing and have revised it. Here's photos showing equal spacing on the air cleaners. Instead of having one design for all the carbs, now the center carb has its own design and the end carbs have their own design. I agree that it looks better with equal spacing!

Thoughts or comments?

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Someone asked for a recessed center area on the top plates so they could be painted. Here's a rendering of what we think is what was requested. Please let me know if this is what was wanted.

Thanks!

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