Hidden Power? | Spacer Upside-down?? | More Tourqe And Better Performance From An Unlikely Place!
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- Опубликовано: 8 сен 2024
- @cuttersperformance • The Best Carb Spacer f...
so here is an interesting discovery! as I was scrolling through RUclips I came across this video linked above, and it had something very weird within it!
so he had dyno tested some carburetor spacers on a sbc (small block Chevy) and the tests showed the typical results you would normally expect to see.
but then he did something most of us would never think to do....he flipped the tampered combo spacer Upside-down?? and it actually made more tourqe and horsepower down below 4k rpm and made nearly the same power up top!? why!!?
well I dicided to take a look at it myself and ponder the reasons why he had gotten the results he did...and to my surprise there might actually be a lot more to this story yet undiscovered. if simply flipping the spacer around changes that much....can we make it even better?
only time will tell as I come up with ideas on how to super improve this basic discovery and see if there is BIG POWER to be made!
#engine #classiccars #horsepower #car
Piss-cutter Performanceis a great channel, love the Vortec SBC stuff he does. Good vid, love your content too ;)
Just found his stuff today! Will be watching more of his content 😃
For sure, I have to watch a few of his new vids myself
I just read about this today. I really like what you're doing with the carbs and just airflow into the engine in general. Always thinking 🤔 I have the afr version and the point sticks down too far to flip over otherwise I would try it.
the spacer being "upside down" is helping to vaporize the fuel mixture rather than just atomize it. the combination of vapor and atomized fuel charges are what "flow" guys always ignore. the increased power is because the spacer is improving the vaporization to atomized ratio, simply put it's a better burn, more fuel used for power and less going out the tail pipe.
So is it vaporizing the mixture by the venturi effect creating a change of high and low pressure helping vaporizing the mixture? 🤔
@@newguysgarage6802 it's helping by causing mmore turbulence , basically think of it as water coming out of a garden hose sprayer nozzle compared to that same spray but going thru a fan as well , it's helping make more of a fog than a mist, does that help ? can think of atomization as a fine rain and the vaporization as fog, it's not a perfect analogy but gives you more of a "visual component " . I rambling lol it's the turbulence that's breaking up the atoms.
flow is important but only half the picture, the over looked part is the actual mixture and for power you need the fuel to be both atomized and vaporized , the more vapor the faster the burn across the atomized particles, it's why you don't mirror polish intake ports you loose the turbulence that helps both atomization and vaporization, another thing is having clean intake valves on the flow side the heat of the valve also vaporizes some of the fuel charge going into the chamber. bottom line is getting the largest fuel charge and air while at the same time having an optimal amount of vaporization... to many guys focus only on getting the most into the chamber "flow" but ignore the physics of fuel combustion characteristics, it's a balance
both mean the same thing except atomizing refers to 200f degree heating before entering the combustion chamber...
turbulence to mix fuels into vapors instead of liquid wouldnt occur during compressing the air instead it turns back into droplets... unless you induce spin or velocity across the main air flow...
the aerospike cuts into the flow and makes it more likely to form liquid in the center and fast moving air along the sides.... ending up as more vapor just before the valves at its densest point...
kind of why long runners with heat exchange works so well too...
it may even further refine this effect
A four hole spacer without the tapering in a dual plane.....without the divider cut down.....is supposed to lower the RPM of peak torque? Maybe increase it slightly? Mph at the end of the 1/4 mile will have to be the dyno. Upside down tapered gives a common plenum just below the carburetor on a dual plane. All of it is interesting for sure.
I'd be interested to see how "quartering" the intake would affect the fuel delivery across the engine at part throttle. As in without the four barrels open...
at 4 mininutes of watching, so far, I have seen that Dualo planes only pick up power with open spacer and not so much with tapered spacers also Open Plenum picks up some with the tapered 4 hole spacers, that is more pronounced when over 500 hp is the past tests.
It flows smoother instead of creating an unwanted obstruction
The unwanted obsession being the plenum divider? 🤔
I personally think that spacer right side up is terrible for dual plane, its made for single plane, so its taking away turbulence then making it by trying to jump over the wall for the dual part, its not supposed to do that! Lol dual plane is supposed to run off a primary and a secondary for each plane not fighting to pull the other side over, I believe having it upside down slows down the chance of it getting pulled to the other side.
That being said that's the exact reason I'm gonna make my own spacer that smoothly transitions from the carb to the planes.
John 3:16
An open spacer would do the same thing by exposing the divider wall and having pulses from each bank cross over. Also the edelbrock air gaps come with a milled divider just to get that crossover action going 🤔
So I dont think it is the fault of that spacer more so the fault of the plenum divider for not being a smooth transition in the first place right? 🙂
@@newguysgarage6802 I wouldn't use a single plane spacer on it either, and I don't understand why that gap on the divider is there, it don't seem like it'd be very effective... 🤔 🤷♂
I would think a dual plane should have either a 4bbl spacer or a dual plane style spacer.
I believe both open and the one you used in the video is supposed to be for single plane intakes, I think atleast.
also thought it was interesting my Weiand dual plane don't have that crossover gap mess.
@@OVERKILL_SS usually the open spacer works best on dual plane intakes and the 4 hole works better for single plane intakes from what I have always seen or read anyway 😅
And the tapered combo is kinda the goldilocks that works for both lol!
They mill the divider to allow the intake to share both sides of the plenum, makes more power because it gives both sides more mixture to pull from I imagine 🤔
@@newguysgarage6802 I figure it screw up the tune and randomly make random cylinders run rich. 🤷♂
@@OVERKILL_SS well I mean.....If allowing each side of the dual plane to be able to share air fuel mixture with eachother was a bad thing.......we would have single planes, because they share air fuel mixture across both sides of the engine too right? 😁
Shopvac test it!
I think that spacer is designed for a open intake not a duel plane intake
Increasing the efficiency of the carburetor is beneficial regardless of what intake is below it I would imagine lol
4 hole is better for low end torque on a dual plane,open increases top end .i have experienced both on a dual a dual plane. with 4 hole being the winner for me.
Why not just go with a Victor jr.intake with that spacer upside down.. gives it a tunnel ram affect..
You can give it a try! 🙂
Anti reversion is my guess.
Could be 😃
you are channeling the air with it upside down . air is taking the path of least resistance
I need to comment more so make more videos
Should be commenting on your uncle Toms videos too lol 😆
@@newguysgarage6802 ok
This seems like something discovered but accident
Definitely seems like it was a fluke of curiosity that he just happened to test it like that.
I did a little searching and nobody else from what I have seen has done it before on camera anyway lol.
Definitely check out his original video in my description to get the full testing from him 😃
Believe it or not it wasn't lol I first tried it on the butt dyno on the street where i noticed improvements. Wasn't until I dynoed an engine with a flipped spacer that I realized how good it actually was.
I know other guys have discovered this trick aswell, including some circle track guys
Ahh ok sweet 😆
Hope you dont mind me using some of your video in mine, I seen it today and was like "wait what? Ok now I have to look at this closer" lol
@cuttersperformance I have one of these on a couple of my motors. Now I'm probably gonna go flip them around after I told myself I wouldn't mess with them anymore because they are running really good.
@@MrJosephfunk thats how it goes lol 😆
Is that a big block in your dinning room?
Small block but ya lol 😆
@@newguysgarage6802 oh good, for a minute I thought u had a big block in your dining rm.lol😅just b careful nothing can fall on curious cats! I love cats.
@@notme8121 his name is Clifford lol 😆
And HE is usually the one dropping stuff off my counters 😑😂
@@newguysgarage6802 they do that, that's why I worry he could knock a cylinder head on himself. But at least it's only a small block .lol
At first I thought, wow nice garage with flooring and cabinets and then I realized. Great way to make use of a kitchen and dining room! No more wasted space!
I am Daryl from Florida. Gd night 🌙
I keep that head up there because it makes him anger that he cant knock it down 🤣 he is too light but he tries and it is funny to watch 😏