And this was his other post Monte... as I said
EARLY in this.. if you have to you have to..
still doesnt say its NOT a restriction.. which
I STAND BY
[/quote]

A couple of us have quantified our results with real world data to back it up...

Just because you use words like "FACT" and "RESTRICTION" doesn't make it so in every case. [/quote]

So you say a filter isnt a restriction... now
I will ask... do you have a scoop and have you
ever put a ideal entry on it(you might call it
a stack)
EDIT
I put a high flow filter on my car at the track
with my scoop and a ideal entry.. it slowed down
.15(thats 150 thous)with a high flow.. with making
jet changes to find the best mph

An oil filter is a restriction too but it's still a good idea to run one
My home track was a dust bowl and I wouldn't even think about running without one
I just don't think there is enough "restriction" to hurt the performance of an average bracket car and so far there is no proof that it does

Gus

Thats fine.. I have said my last response on
this

What's your point?

I've re read all my posts and I never said an air cleaner wasn't a restriction or they made more power than no air cleaner. Brad asked if anyone had used a particular base for an air filter. While it's not the base he is asking about I posted a link to the one I use. It is relevant to his question and it may be cheaper than a repop piece for a Corvette. Plus it will work with a Holley carb.

Monty is correct, the shop that dynoed my engine builds and sells lots of engines for dirt track cars, so it's good business for them to know what works best.


Even hicks in Kentucky were taught reading comprehension is grade school.

The L88 filter base can be used with very tall 14" filters to minimize losses through the filter.

I use it on my Holley but I needed a spacer to get it above the carb in order to clear everything. I like the way its rounded cross-section helps the air on its entry into the carb.

Mr. P talks about an ideal entry and in my mind this base is pretty close to one. An ideal entry is one that creates minimal losses on entering the carb. Most of you haven't taken Fluid Dynamics and might be interested to know that there are losses that occur anytime the flow has a sudden contraction or expansion. The square corner entrance has higher losses than a rounded "ideal" entrance.

I'm leaning more towards a 16" drop-base designed for 5-1/8" neck carbs, whereas pretty much every other 16" filter setup I've seen has been offered only for Dominator-type carbs. I think it, too, has a 2" drop, and might require a short (.5" maybe?) spacer.

Haven't seen one first hand, just something I came across w/in the last day or so that caught my interest. I might be limited to a 16" x 3" element, possibly a 16" x 3.5", depending upon how much the lid sits up over the level of the filter itself.

Thanks for explaining that so some of them can
understand it... the new filter housing I'm
looking at has a nice entry and is a dual snorkel
so I can route in outside air from the front end
and I'll run the Wix high flow filter.. I'll still
have to run a drop base but as I said already.. gotta
do what ya gotta do

I like it.........

I determined I may need to stay with a 14" filter setup, based on what appears to be lack of clearance to use a 16" with my fresh-air plate. Maybe it's still possible to do it once things are back together enough that I can check clearances with the parts fitted up. However, at this point, I'm holding off on the 16" assembly I was interested in using.

My current plan is to run the Moroso-type 1" drop base w/ a WIX 14" x 3.5" AP-series (Asphalt/Pavement?) element and see whether the Moroso or K&N metal lid works better. There's definitely room to use the fresh-air plate w/ a 14" setup, and I'd really like to keep the filter in place while still having the carb sealed to the hood.

Back from the dead after 3 years...

Recent eBarf purchase was a used Braswell 4150 air cleaner setup. I took some pics of it to show overall height, etc., compared to a Moroso drop-base combination with a 3.5" Wix racing filter. The Braswell uses a 4" K&N element that is 14.25" at the base and 15.25" at the lid, along with a short "sure seal" o-ring spacer.

Views without the lids...

And...

Finally, swapped the Moroso lid for a K&N lid, which is roughly 1/4" taller in the center.

So, the surprise to me was the Braswell assembly is right about the same overall height as the Moroso with the 3.5" filter. Also, I didn't go with a 16" air cleaner like I showed above because 16" is too wide to fit under the opening of my hood where the scoop mounts.

I've seen that air cleaner before but it didn't have a Braswell label. There was someone who used to sell spun filters. (spun rather than stamped) I wonder if Braswell was buying them and putting their label on them. Be interesting to see if there is any difference on the engine.

Do you need someone with a running car to back to back test them for you?

There are a number of spun aluminum air cleaners being offered today, but I don't know how many are the same product from different vendors.

One of the common issues with most of those 14" drop-base designs is the bottom of the filter is effectively blocked off because the base rises at about 90* from the sealing surface for at least the first inch. Between the Braswell filter being tapered outward from the base and the base itself being laid back right from the start, I believe the Braswell is a better design.

Picture shows same two bases as above where you can see how they angle away from the filter.