Holley 4150 carburetor tuning “secret” you probably don’t know about.
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- Опубліковано 16 лис 2021
- Just one more thing you can adjust on your Holley 4150 carburetor. If you did not know it already. Holley gives you a way to adjust your secondary linkage using part number 20-122. If you have a hard to fix lean spot during cruise before your transition to the secondary's, you can smooth out that transition buy just bringing them in sooner.
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Holley Pro Series Secondary Linkage Kit 4150 Series Carburetors
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Linkage Kit 4150 Series Carburetors
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Following your channel since 6 months ago, you make the best how to tune videos!
I rarely comment on videos but i really appreciate what you do and you teach me alot!
You even inspire me to start youtubing soon to.
Million thanks from Sweden
He really does make some good content
Thank you for great information & sharing your thoughts and progress. Like you I've been chasing & refining my tune for a while - this is one I'll have to try.
One of the greatest improvements in throttle response came from the installation of Thompson performance power blast plates to both primary and secondary sides, particularly with the heavy accelerator pump shot I needed. Cheers Mike
Thanks once again Tyler. I work for Lordco here in BC Canada which is an automotive parts retailer. I ordered this product from here and will be arriving on Tuesday. I pay about 45% off of retail. Keep up the great videos 😊
Thanks for the good info, love the truck
Good stuff!
Thanks for sharing brother !!
Thank you for posting. Great info. I made the part for 5, at 45 dollars it was high just to see if it worked.
Well...it worked great. definitely picked up some snap. First hop on the street the shift light came on quick, I shifted, it stayed on. I usually do not lift when shifting, definitely had some wheel spin.
You are never too old to learn something new
Thanks for sanding that down after drilling it, my OCD was going crazy!! LOL!!
I suppose a 1 to 1 setup would be perfect for drag racing.
Thanks for the vid. I have that lower hole on my blp baseplate and i never even noticed it.
Oddly enough i was just questioning why the throttle was sooo progressive
Great info!!
Thank You Very Much!!💪💯
I never knew this! thanks for sharing!
No problem!
@@TPVPRO hey just wondering how much it cost to swap to carb and distributor im about to do lt1 build for 80 z28 i like you truck man and the lt1 build you done mine is not going to be that badass like carb setups
Mr. Sparkles RULES!!!! sweet mod!
I was just tinkering with my Proform 750, before watching this. I noticed a high pitch squeal/whistle, when secondaries open. Never noticed it before. Maybe because the engine was louder at the point that they open, stock. Sounds like a compressor engine. I think I heard it on yours as well.
Put a small square on the base plate and up against the throttle blades to accurately set the blades .
We use to bend the factory linkage to get them to open sooner
Then it was probably opening the secondaries past vertical. Been there done that till I realize I was causing an issue.
Most likely your right, but it picked up our Cutlass .11 in the 60ft
When adjusting use a small square to be sure you are right on!
I’m not even Carb and find this useful,
Great videos,
Frustrated with idling in gear at a light and loading up. I am going to have to increase my stall speed but do not want it to be to loose.
I have a comp hyd roller 286. 230/236, 350ci, 10:1, 67 nova 355's
I have the holeshot 2400. I like that it is tight on cruise but think I need to go to the 3000.
Wondering what stall you have?
Do you have an afr gauge?
I'll give that a try on my 750 double pumper Holly that goes to by 327
Cool video. Question, did you square up the power valve and jetting primary to secondary? Seems like that is a must if you make this change.
The best way know if you're jetting is square with a PV in the front is to first block off all PVs and get a good WOT AFR of 12.5. then put a PV in the front and jet it down until you hit the same AFR you have then confirmed your jetting is square with a PV in the front. But changing the secondary linkage has zero effects on jetting but you may have to retune the discharged nozzles / cams.
Cool 😊
Will this improve the fuel mileage on my 454? 😎 Great vid!
Ha ha ha ha ha ha ha
A specialist in Webber/Holley conversions converted a 850 years ago. This actually should be a way better carburetor but I never hear good reports about them. Is this something I should be concerned about as I haven't got my build finished to use it. What can you tell me ?
What is the exhaust set up on the engine running right when the video begins
With his monster truck is has his secondary’s open up at the same time as his primary’s and it still needs more 😳
I noticed you move the throttle twice on your fast rev up. On second blip to get instant RPM I believe you are carrying over from the accelerator pump shot on the first blip. I believe you double blip to keep from bogging. Then, what the hell do I know? I did the horrible thing on vacuum secondary Holley to put the screw in to override the vacuum diaphram on the linkage. Take it out to get fuel milage on trips. Going to race, put the screw back in. Had 4 speed, so no problem pulling up against torque converter.
Try thomposon plate that makes carb more snapy
Did you by chance try tuning the power valve restrictors?
Did all that
Sounds like to much transfer slot used up to get idle drill .093 holes in
Blades to shut them down so .020 shows tranfers are acc. Pump shot
Before. Shot from above.
Everytime somebody talks about a holley carburetor they start talking about drilling something SCARY !
What kind of under hood light do you have? Looks like it gives a good amount
Harbor Freight baby! 😎
You can make all 4 butter flys open at once if you don't care about gas mileage ,I think you should have just went up in # on the squiters ,if you had the correct power valve ,check vacuum say its 20 so you need a #10 power valve then dial in the squiters then the accelerator pumps and then the jets
I have videos that talk about all that check them out.
I went to 46 squirters, and still got a lean tip in at cruise. This fixed it. Yes maybe I could have dIcked around with the PV, but everything was good after the initial lean hit.
Hey buddy I’m trying to get tps sensor kit for a double pumper street hp carburetor I’m running 4r70w electronic transmission do you know something I can use?!
Check out US shift or Baumann Electronic Controls
Do you have fixed timing with this. (Locked out, no wieghts)
Yes locked out
So by installing this linkage and making adjustment for the secondary to open 1:1 this will open up my secondary sooner BUT will I need to eliminate my rear power valve in order for this to work
You can keep the rear PV.
@@TPVPRO ok thanks what is the benefits of blocking the rear power valve
@@ddstaton211locking the rear power valve only needed if you already have too much fuel under part to mid throttle, usually carburetors with billet metering blocks allow for fine fuel adjustments you can thereby eliminate the power valve in most instances. Every engine combo is different sometimes depends on what your purpose is wide open strip usually best to delete power valves if I’m not mistaken…
It doesn't give you the ability to adjust the timing of the secondaries opening. It only allows you to change the opening point from stock to a point dictated by the position of the second hole and the length of the adjustable link. The adjustable link can only be one length, the length that places the secondary throttle blades at fully open when the primary throttle blade reaches fully open.
@@bigboreracing356 If you will look at your carb you will see that you have multiple holes for the link on the throttle shaft. You pick a hole (which is what changes the ratio) then you adjust the length of the link to make the sec. throttle plates straight up and down at WOT. Your camshaft/crankshaft analogy is complete nonsense.
@@bigboreracing356 "How is it nonsense?"
The carburetor adjustment is a change in ratio. Your cam/crank analogy has absolutely nothing to do with a ratio change.
@@bigboreracing356 And what would that have to do with neither you or the OP understanding that the adjustable link has nothing to do with changing the ratio, and that it is in fact moving the linkage attachment point that results in a change?
@@bigboreracing356 What are you six years old.
@@bigboreracing356 This is hilarious.
Should I do the mod or doodoo the mod.? lol
So your secondary pump is coming in sooner to fix the lean part throttle condition?
Not just the accelerator pump but the entire rear / secondary enrichment.
@@TPVPRO you got a power valve in the rear?
@@jakefriesenjake No PV in the rear.
Is that a Yong Heng compressor I see
Sure is
@@TPVPRO Can I ask what purpose does it serve?
When you hitting the track?
Hopefully this Sunday
Keep us posted- good luck 🇺🇸🏁
Let’s go Brandon 🇺🇸
Spray?
@@philipmazzuca2269 For sure need more testing.
355 smallblock chevy enging high conpresion motor 12.5
my distributer dosnt turn when enging his hot
when car gets hot not runing right turn off
Pump not flood the pedal and try quick revs not slow and flooded
Holley has quite a scam going. Buy a $500 carb.......then buy $250 worth of stuff to "tune" it.
250 is about the price of a POS laptop if you want to tune EFI
He doesn't know how to get the most out of a 4150
do you know how many times you said "these guys" "that guy" ect, ect, i got ill listening to that yankey nonsense!