DIY Blow Through Carburetor Build For The Budget Turbo Carbureted LS | Part 2 | Proform Race Series
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- Опубликовано: 31 мар 2023
- Today we are diving into the second part of building a budget carburetor for turbocharging your own engine. In this video we will be getting deeper into the boost activated power valve or boost referenced power valve. Will will also be talking about the power valve restrictor channels in the metering block of the carburetor as well as the idle feel restrictors at the top of the metering block. The new carburetor that I am building is a 750 E85 race series carburetor by the guys over at @PROFORMParts
I don't think I really need to say this but if you mod you carburetor for blow through, you void any warranty that applies to the carb. DO AT YOUR OWN RISK!
Recap from part 1:
Today I will be showing you guys how to build your very own diy blow through carburetor. The carburetor we are working with is an old school barry grant 650 demon. This particular demon was an alcohol carburetor that I had converted to gasoline and then later converted to e85. I've been running this set up for about 7 months and so far I've had no issues. Last time I was on the dyno I put down 529hp and 509lb ft of torque. Engine specs are stage 1 cam (.553/.553 208/212 112LSA), carbureted dual plane intake, 2 inch spacer, 4 inch carb hat spacer, budget turbo carb hat, ebay 78/75 turbo, shorty headers, stock bottom end, stock 862 heads with valve springs, Daytona sensors LS2 coils, Daytona sensors smart spark LS ignition system. This is only part one of the carburetor build on the junkyard LS. Part 2 coming out soon.
#turbols #carburetedls #proformparts
Parts List:
Nitrophyl Floats(not notched):
amzn.to/3zoDkRm
Budget Carb Hat:
amzn.to/3nDLTor
Carb Hat Riser
amzn.to/40TpQJ3
1" Open Carb Spacer
amzn.to/3KmtrK4
Base plate(no vacuum ports)
amzn.to/3KlVkSx
Boost Activated Power Valve
amzn.to/3nyR7SC
Tiny Drill Bit Set
amzn.to/3TWdKwc
Bigger Drill Bit Set
amzn.to/3G5noHp
Holley Carburetor Jetting kit:
amzn.to/40AkN0b
Pin gauge set(small)
amzn.to/3ZvPRN6
Pin gauge set(large)
amzn.to/3Zu5kNU
Wide Band:
tinyurl.com/2p9dnwss
Smart Spark LS Ignition System
tinyurl.com/ez9dxjrm
Smart Spark 4.8/5.3/6.0 Harness
tinyurl.com/33nxaa6d
SSLS LS2 Coils
tinyurl.com/mvrafs8f
Proform Gasoline Carburetor
amzn.to/40MAoto
JMS FuelMAX(Fuel Pump Booster)
www.jmschip.com/product/fuelm... 
Авто/Мото
If you missed part 1, here it is! ruclips.net/video/p88OHXFnVC4/видео.html
I like adding a supplemental fuel injector working off a pressure switch in the intake tube before the carburetor as a more simple solution. Thanks for the video
You can do that. It was a common thing to do back when I uses to work on turbocharged hondas 10+ years ago. With a properly built carb, you can tune for the whole curve instead of just dumping fuel at WOT. Regardless, it does work.
Hey be careful with the SS needle and seats. I tried converting a 4150 to E85 blow through and put in .150" needle and seat. There was not enough buoyant force on the float to actually seal the needle and seat shut due to the larger are of the .150". I tested this because with the bowl on the car it would overfill and start to flood the engine. Taking the bowl off the car and hooking up the fuel pump feed to the bowl, I was able to simply hold the float up with my hands and seal off the needle and seat. But with the buoyant force of the float by itself it doesn't.
The pro systems carb I have for E85 blow through is dual needle and seat and they still use viton tips
I double checked my needles after editing this video and my old alcohol demon actually had stainless .150 needles. The tip was round smooth. I do remember that in the beginning, I did have trouble getting the needles to seal when I went down to gasoline. Swapped to a larger return line on my bypass style regulator and lowered the base pressure a touch and they've been holding ever since. 7 months and several thousand miles. I'm not saying they can all be made to work, but the ones I had I did manage to save. With that being said, dual needles are a much better way to feed a carb 100%
Interesting video is there a part 3?
Right here ruclips.net/video/bdKC-c4TbcA/видео.htmlsi=IghXcIMMO5KtUKVW 👍
Very informative video as allways man, but damn it threw me off when you had to enlarge the idle feed restrictior channels for this (lol never had to even look at ifr on my NA build) guess part three will explain it
Didn't wanna spoil all of the fun 😎
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Good Morning my Brother!!! Excellent information as usual. Love and appreciate all of your content. I wish I had your awesome skills! Do you think your blow-thru carb would work well with a Procharger? And, Why would you or anyone run 25 lbs of fuel pressure for a carb? Is it because of the boost? I run N/A on a built 429/460 but only run 7 lb fuel pressure. Thanks for sharing, Cheers and blessings from Motown/Dearborn.
Thank you sir! Check this video out, it has the answer to your question ruclips.net/video/HYElRJoWIHI/видео.html
You need to add a lb of fuel pressure for every lb of boost. That's why you boost reference the fuel pump/regulator.
This is all over the place just tell us what you did to get it to work
Its a 3 video series, its not just 1 thing. If it was that easy, everyone would be doing it. Theres a reason people charge $600+ for the conversion