How to Change Holley Jets
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- Опубликовано: 16 сен 2024
- Check out my new website for parts and merch that I am selling - krusebuilt.com/
Holley Carburetor Kit - Part number 36-182; Amazon Link = amzn.to/44W3Izv
Holley Jet Removal Tool; Amazon Link - amzn.to/44WM5Q9
Autometer Wideband Air/Fuel Ratio w/ Sensor - Part number 3370; Amazon Link - amzn.to/44SSAn5
The car is a 1966 Mustang Fastback with a 347 Stroker and T5 transmission.
Shot with GoPro Hero 9 with the Media Mod, edited on Davinci Resolve 17.
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The more I see you work on your carburetor, the more I'm convinced to toss my rebuilt factory carb and replace it with a Holley. Thanks for the great video.
Haha, I wish I knew more about this Holley Carb, and Carbs in general. I still have a lot to learn, but my goal is to share what I know and do my best not to steer my viewers down the wrong path. That being said, I will be doing another video where I dial in the Jets a little more and change the accelerator nozzle sizes. I am still not happy with my AFRs, so I'm going to continue to tweak the parts until I get it better. :)
I recently picked up the same carburetor but with manual choke, 3310-16M, 750vacsec classic but in shiney form, and all aluminum. I plan on putting an after market billet metering plate on the secondary side that you can tune with replaceable jets along with jet extensions and a notched float instead of going with a metering block, the jets stay summerged in fuel on hard WOT launches, keeps the engine from going lean. Something to think about if you havent done so already, adjustable billet metering plate to keep it stealthy or go with a secondary metering block, for more tunability of course.
I have been looking into upgrading to the adjustable metering plate, along with the jet extensions and notched float. We'll likely have the same setup by the time I get there. For now it's not needed as I'm not ready to dump the clutch (launch) this car with that 8" rear and the T5. I suspect I'm already at the limits of both of those units, so I'd need to do a 9" and TKX before I can play with launching. :)
Thanks for this video Andy.
My pleasure!
I have the same kit in my trunk love it but I remember the first time changing jets with my dad when I was 20 and got my grandmas mustang from 66 and jokingly I said yeah we gotta put some 99s in there haha the look he gave me was worth it hahaha but I believe my front is maybe 72 and backs maybe 76 or 68/70 and 74 I can’t remember it’s been 2 years since I rejet the carb
Yeah, often the rear jets are much larger than the front jets. I still think I need to go down a size, but adjust the accelerator nozzles too. I'll figure it out. :)
@@AndyKruseChannel right and having the Holley kit is so nice but I went from a 720/750cfm Holley street avenger to the 650 I believe (if I’m not working on it constantly I forget information until I work on it) but it was just to big for the car at the time it smelt like straight fuel driving it and the 650 just worked perfectly for my car making little over 300hp
👍🏻👍🏻👍🏻🤘🏼you need to do more driving videos with some pulls on the new engine
Haha, nice. :)
Surprised there wasn't a long vent tube inside the bowl. You might find you'll end up with a bog when launching. You may be running on the idle fuel jet when cruising that slow so check your off idle mixture. Basically open the throttle slowly while looking down the carb. Make sure it's not pulling fuel from the main boosters. I think you'll find your off idle is a bit rich and your jets a bit lean. Also there's nothing wrong cruising around at 13.5 ~14:1. It will always lean out as you open the throttle pulling a hill. The power valve should kick in before it gets too lean. Just make one change at a time and soon it will be dialed in. I prefer the 2 stage power valve Ford used in their 85 GT 5.0. It gives good stepped mixture enrichment and you can run it a bit leaner for better mileage yet retain good acceleration. Don't know if they are still available.
Yeah, there's more to do while dialing in this carb. :)
Andy , Read your plugs !
I did, it says Autolite on them. :)
😂
Hi Andy, I have a Holley 600cfm in my stock 289, running rich, noticeable by the smell of gas...my mechanic told me to get a 500cfm carb, but my one is just rebuilt...would jetting it down solve my problem or I should go for smaller carb? Thanks as always, great video
I think the 600 is at the top end of size for a 289. Jetting it down will help pull some of that fuel out, but you'll have to sneak up on it. It would be best if you were able to install an O2 sensor and gauge so you can see where it's running rich (as you roll through the throttle) and for how long. Running rich is safer on the engine (as long as it's not too rich where you are washing out the cylinders), but if you can pull that back a bit, you're likely to find a few more Ponies from a slightly leaner mixture. Good luck, you've got this! :)
Thanks Andy, your videos and suggestions are always really helpful! Appreciate it
Smaller jets make more power?
Not necessarily. But leaning the fuel out a bit can create more power, it’s a balancing act with many factors playing a role. When exploring the opposite, too large of jets can cause the cylinders to get “washed” with fuel and essentially flood the engine which hurts performance.
Lots of Mexicans n there lowriders need to learn rich n lean settings asap.
Lol
If you had to do it again, would you have chosen the Holley Terminator EFI?
Nope, I like learning about about tuning the carb. It’s becoming sort of a lost art.
Sir, you are a true Bohemian. @@AndyKruseChannel