Polymer Racing Products Dimpled Carb Spacer

This week we're looking at the dimpled carburetor spacer from Polymer Racing Products and the new crate engine for the GMC truck. Lots to go over in this one! Great technology in these spacers. Take a look and find out when we'll do some dyno testing!

#carburetor #spacer

[sinformant]

The honeycom interior you speak of is something called infill in the 3d printing community. It is a way to save on material usage and speed up the printing time when printing an object. It is just a normal part of the process of 3d printing objects. In the slicing software that converts a 3d model into the(g code) instructions that the printer reads it allows you to adjust the density by percentage of the object ia just infill, as well as what type of pattern the infill is. If it creates an insulating air gap that is just a bonus. Never thpight about designing and printing a carb or throttle body spacer before. May have to try it and test it on my car

[SleepyDaisy-ubwt]

Seen a test with those spacers.. the cloverleaf spacer made more running upside down

[GodandGears]

Great video! They have come a long way with carb spacers! Thanks for sharing!👍🏽

[NathansMoparGarage]

Those are cool looking. I guess it depends on how well they work.

[jwise]

Richard gray in atoka has been doing great machine work for decades. For crank work and balancing bullet cams is the go to.

[PACBrian]

why has no one done this before? i think i need to get a 2" great video bud!

[autonomous_collective]

Baught several of those spacers months ago. Half inch only for my dual plane manifolds. Dyno tested yesteday.🤙

[DesertRatFabrication]

Hey Brian, that’s exciting, are you going to video you putting the motor together, and also I would like to find out more on the motor from Summit, we were talking about cams last week and I was wondering if I might do something similar and just go with a new motor, maybe you could give me some info so I could go to Summits site to know I was looking up the right engine, thanks buddy 😀😀

[harnettsgarage]

I've thought of buying a blueprint crate engine, with all the issues I've had with cams going bad.... I think they have mentioned in Roadkill and Engine Masters that the Blueprint engines always seem to make more HP and Torque than they advertise. I've seen intakes that were dimpled, I think I have seen heads where the intake runners were dimpled too... I may try one of those spacers on my 350, just to see!

[ItzTheDay]

I have been saving up for a Blueprint 502 for my El Camino. Man I hope the dyno sheet shows they underrated it.

[kennyc]

You should build a mock intake manifold with plexiglass and send some smoke through it

[BPattB]

Sorry bout the small block. I've got a few buddies with Blueprints and they are happy with them. Ive talked to guys a meets and shows with them and haven't heard of anyone have a failure with on. If I was to go with a crate engine I would probably go with a BP347 or their 302 that makes 361hp. On a side note one of my buddies that got a BP 383, it came with the dyno sheet showing 436hp. He got one the turn key models. It came set at 10° Initial and I think it 28° all in. He was Dieseline when he would shut it down occasionally. He called BP and they said that they set the timing when dynoing to achieve advertised horsepower and torque. He bumped the timing up 5° and problem solved. Pretty sure he picked up a few ponies and some torque. Just something I thought you would be interested in hearing.

[OneMoreBolt]

Would be interested to see the dyno results for these. My concern would be longevity of the product, 3d prints are fantastic prototyping parts but usually don't have the durability for long term use. I'm also not so sure about that $160 price tag for a 3D printed part. . . but if it performs, like they "show" on there website, 160 bucks isn't to shabby.

You should really test that PR dimpled spacers against tapered combo spaces for a more direct comparison seeing as these are an evolution of that design, where as the open space is a difference concept that produces much different results (sometimes better, sometimes worse, depends on the application). Just a thought.

[lasskinn]

if you wanted to design your own you could have them 3d printed from suitable high temp plastic by a service like pcbway if one doesn't want to fiddle around.

you can print them with a home printer though depending on the home printer, but you'd need to know what you're doing(or have an expensive printer set up for it already, like a hardened all metal extruder, enclosure, possibly heated but at least one that stays hot and such by default - what I'm saying is that a cheapo printer needs quite a bit of "hot rodding" to print stuff that would survive under the hood)

[Foxcanfixit]

So if I put a 1 or 2” dimpled spacer on my El Camino is it going to help or hurt my attempt for maximum low end torque?

[mojorising]

I run an 2" Aluminum HVH in Dragracing..The Plastic I have seen will melt..Happen to My father's car.More Atomizing of the fuel.i did jet up for the right feel

[Scarlet__cuda]

I know it is a bit of a drive, but Ed's Machine in Arkansas is where I would go if I was just a state over.

[briang]

Was that an old PAW rebuild engine? That red glyptal paint was something they always did to their engines.

[oantech]

In addition to a boundry layer improved air flow, they claim that the dimples help mix a more homogenous air-fuel mixture entering the combustion chamber. Their YT video also raves at an extremely improved HP and torque band throughout the test +21 HP...!
Wow.. quite impressive..
Where the hell has Holley and Edelbrock been on this dimpled technology. I hope they have a patent on this.. I am currently using a 1" phenolic spacer as my biggest problem is boiling that crappy ethanol fuel under high heat days like staging in line at a car show in a heat wave. Definitely going to slap one on over the winter and see what happens.

[deerslayer]

20 ft pd torque increase on my 350 with 4 hole prp spacer