Engine Masters' Air Filter Test

General engine tech -- Drag Racing to Circle Track

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Re: Engine Masters' Air Filter Test

Post by bigjoe1 » Tue Nov 14, 2017 12:49 am

This was a long time ago, but when I tested air filters, the 3.95 element from pep boys made exactly the SAME POWER AS THE 40 dollar K & N unit-- THe K & N filter top ALWAYS LOST power every time I tried one on my dyno.



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Re: Engine Masters' Air Filter Test

Post by cjperformance » Tue Nov 14, 2017 1:09 am

But breathable top filters look so good ! They must be better ! :lol:
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Re: Engine Masters' Air Filter Test

Post by kimosabi » Tue Nov 14, 2017 3:10 am

Good to see the B & B dropped base cleaner did so good. Confirms what I experienced myself.

I wish they had tried the ultra low profile Spectre air cleaners with the two cone filters on too. Lots of controversy around those.

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Re: Engine Masters' Air Filter Test

Post by mag2555 » Tue Nov 14, 2017 7:42 am

That's a great series of test and very imformative , but they need to expand the host vocabulary because once a hear the word narly used I no longer want to listen to him!

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Re: Engine Masters' Air Filter Test

Post by englertracing » Tue Nov 14, 2017 4:45 pm

racinnut15xm wrote:
Mon Nov 13, 2017 1:26 pm
Disappointed no R2C was involved in that testing. Off to find a nice used salad bowl :D
that is what i was just thinking

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Re: Engine Masters' Air Filter Test

Post by redliner » Tue Nov 14, 2017 4:54 pm

I saw this also. I do not have room for a 14 x 4 air filter. I was thinking about duplicating the velocity stack air filter set up. Does anyone make the velocity stack for a dominator?

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Re: Engine Masters' Air Filter Test

Post by BOOT » Wed Nov 15, 2017 4:15 am

RevTheory wrote:
Mon Nov 13, 2017 10:20 am
Definitely interesting. I'm surprised that big block didn't swallow some of those filters, lol.
Yah kinda surprised the small filter on the velocity stack did so well.


Would have like to see many more combos/parts tested, maybe even just a filter lid to simulate a hood, hopefully they will revisit it someday. R2C substacks for one. Basically just tells me you need as much open area above the carb as you can spare.
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Re: Engine Masters' Air Filter Test

Post by BOOT » Wed Nov 15, 2017 4:18 am

kimosabi wrote:
Tue Nov 14, 2017 3:10 am
Good to see the B & B dropped base cleaner did so good.


I think that was the spun alum top, the vent clearance as mentioned earlier.
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Re: Engine Masters' Air Filter Test

Post by Krooser » Wed Nov 15, 2017 6:34 am

Hot Rod did an a-b test on piston rings...std vs a thin metric pack. The results were not what many would expect.
Last place in the B-main is better than anyplace in the grandstands...

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Post by dwilliams » Wed Nov 15, 2017 4:39 pm

I'd like to see a test including one of the 1960s Ford air filters that came on some of the high performance engines. 14x4 filter element, large radius into the carb mouth, huge annular volume around the outside of the filter, and one or two large snorkels, sometimes with hoses for cold air induction.

On a 289, it looked like a metal spare tire housing across the top of the engine...

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Re: Engine Masters' Air Filter Test

Post by Cris » Wed Nov 15, 2017 6:39 pm

The K&N filter top outperformed a standard 14x3" filter, provided you didn't allow air to enter from the sides. They taped the side element shut and that worked better than either having (only) the side element or both the side and top element.

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Re: Engine Masters' Air Filter Test

Post by plovett » Wed Nov 15, 2017 6:51 pm

Cris wrote:
Wed Nov 15, 2017 6:39 pm
The K&N filter top outperformed a standard 14x3" filter, provided you didn't allow air to enter from the sides. They taped the side element shut and that worked better than either having (only) the side element or both the side and top element.
I'm glad somebody else noticed. That is the single most interesting result of the testing. The round element by itself outperformed the round element/filter top combo. That doesn't seem too surprising. But the filter top by itself outperforming both the combo of the two, and the round element by itself was a bit startling to me.

JMO,

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Re: Engine Masters' Air Filter Test

Post by BOOT » Wed Nov 15, 2017 7:18 pm

That's why they did the salad bowl.

I've always herd carbs like air from the side over the bleeds and not the top but their results shows the opposite.
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Re: Engine Masters' Air Filter Test

Post by MadBill » Wed Nov 15, 2017 7:26 pm

According to Captian Obvious the vast majority of engines get dynoed and tuned being fed from above with either a flow meter or nothing...
Felix, qui potuit rerum cognscere causas.

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Re: Engine Masters' Air Filter Test

Post by plovett » Wed Nov 15, 2017 7:29 pm

In a car the "top flow" path may not work well if the hood is 1/8" over the lid. I don't know.

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