If you are using one of these type air cleaner bases - stop, and throw it away

I'm curious if anyone has dynoed an engine with a Star Wars air cleaner to see how it does??

 

Here’s a couple screenshots of the engine masters results.

 

Anyone have a kink to that episode 27

 

So the flipped lid 'added' 41 HP! (on 750, of course).

Question : I have limited room, 2.75" from carb lip to hood. Obviously need the dropped base style.
One of them is 1.375" drop, plus the 3" filter = takes up 1.625" of the 2.75".

I can't find a height for the associated domed lid- is anyone using on of these suggested dropped air cleaners, and how high is the lid itself?

 

To me its common sense thst air flowing straight down into the carb unrestricted will make the best power .......duh........but not many of us have the room to run a foot tall salad bowl onto our motor.

I wonder if the taped over round with only the filter lid would work as well sitting 1/2" from the hood.


The extra tall air cleaner proves the height of the straight shot is key, but the flipped lid show the old trick had some roots.

What I take from this is the path of the air is most important factor. Wonder how many 500hp motors got choked out this way

 

Don't forget, with the lid flipped, the top is the bottom and acts as a funnel effect.

If you have a flat lid on a severe drop base, you will be choking the room above the venturi down a lot. Domed gives some space.

 

"Domed gives some space".
Plus also helps 'direct' the air, I would think.
Wouldn't a flat lid on a 1.5" dropped housing make a 3" tall filter effectively a 1.5" or 2" tall filter? Seems like you'd be building in a 'choke point'.
- - - - -
Freezing the above video, it looks like the B&B domed top lid is half the height of the filter, or circa 1.5". That'd hit my hood. Can't have any more than 1.0" of a dome (which would leave me 1/8-in).

 

Run as tall filter as you can.
My L88 base is a full 2" drop, that's why I just went to a new 3-1/2" tall filter.

 

^ Thanks; will look for a 2" drop assembly.

 

Thanks Wizard you have the cape on tonight manuals open LOL

 

See we were going faster all those years turning the lid up side down LOL

 

https://www.paragoncorvette.com/ShoppingCart.aspx?add=true&ReturnUrl=showproduct.aspx?ProductID=351082

Ecklers is cheaper but "out of stock".
https://www.ecklers.com/corvette-air-cleaner-base-lt1-l88-1968-1972-25-123935-1.html

 

I have this air cleaner set up stashed away for possible use in the future and was wondering if anyone has used one and has any input on it? What type of gains or losses does it produce?

 

Guys, I've found the lid height above the carburator throat , particularly with a drop base, is far more important than the drop base itself. Flow tests have shown significant reduction in flow of the headroom distance is less than 1.25 inches. The thick lid from k&n results in less headroom and less flow in every test I've done, and gives a false sense of function.

Craig

 

Craig,
You might have worded it better than I did on page 3,but yes,that is what I was trying to explain.
The reason for a drop base is primarily for more air volume. If we cant go any higher,the other option is to drop the base.
If you have two identical heights of 1.25”,and one had a 2” filter,the other a 3” filter,you will see some improvement. But yes,the distance from the underside of the lid,to the carburetor throat(or air horn,if you have one),is the more critical factor.
After some of us spent a few years competing in the EMC,we soon realized the politics involved in that and some of us no longer pay any attention to it. You need to draw viewers and sell magazines. There were some truly amazing builds,but no mention of it if it’s not Chevy,Ford,or Mopar.

 

Don't use that base on a Qjet. If you look at the pic I posted, it is the same shape as the one we tested. They are very popular and used in a lot of air filter assemblies.

The lid may be fine however

 

My base is totally different than any of the ones you or others have posted. Take a look again at my base with the raised fin section keeping the lid from closing up against the base choking off the incoming air compared to the flat top drop bases that have been posted here.
I can't use it anyways as it's too tall of a set up to run under the hood of my 69 Riv with Qjet and performer intake. I tried seeing if a 2.5" filter would work but no go the lid hits the top of the base.You can only use a 3" and larger filter on this aircleaner so that's out for me hence why it's for sale on the board here.

 

And just for clarification, here is the rounded radius base used that gave good results, along with the corresponding plot.