Edelbrock Marine Carburetor Info & Tuning
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- Опубліковано 29 сер 2024
- Our first video on the Edelbrock marine carburetor! I've worked on these for years and they have some very unique differences from the performer and AVS series carburetors. We'll look at them in detail and talk about the tuning process for these.
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Thanks for alerting the regular guy messing with boats. They also don't run air cleaners, instead they run a spark arrestor. Definitely don't want fuel in the bilge area as that is how boat explosions happen. One great thing about the Edelbrock carburetor is the contained float bowl area with no leak areas below the top seal unlike a Holley.
Edelbrock makes a very good marine carburetor for sure.
I was getting some pretty rough running under hard braking, and as part of the diagnosis (yes, which included pressure and float settings) I had a GoPro under the hood. Fuel was sloshing out around the accelerator pump shaft, so I installed the marine seal. So, even for street applications, it can be useful.
Excellent info, I installed my carb but haven't fired my new engine yet.
I stepped up the metering rods and jets thinking I wanted to run a bit richer, didn't realize the carb stock calibration already took into account this application.
Will set back to stock before first fire.
as a 32' boat owner w twin 318s,,I know a lot...they are flame arresters-ive seen them in action..yes they inspected and replaced/
Lots of great information keep the videos coming
Thank you!
Great video sir. I am looking to switch to this exact marine carb on my boat. With my holly since I have to idle so much leaving the harbor and when I get to the spearfishing grounds I have to navigate slowly around reef and other issues. It is only between the two that I get to run the boat hard. My question is on a big block Chevy what CFM do I want for my application. My boat has a 7.4l 454 with a pretty mild cam. Boat came with a 750 cfm but 600 seems like it would run a little leaner and a little more dependable for my application. Currently I am just carbon fouling plugs probably every 4th run. Thanks again.
I have a searay express 400 with twins 454 7.4L i now have rochesters quadrajets im looking in swaping for edelbrock carbs wich one should i get 600cfm or 750cfm
Thank you
Would need to know a bit more info on that set up. Like what rpm are you cruising at.
My ‘86 490 EC has the Mercruiser 454s with 750 CFM carbs.
The pump seal is to keep water (moisture) out.
Great video!!
Thanks boss!
Hi, I installed a 1409 marine carb on my classic wood boat. Starts fine and I feel like to have it tuned close but it will not run without the choke at least being partly on and won't idle below 1000 rpms with out shutting down??? Any ideas. Thank you
on a 5.7 Chevy engine witch carb is better the 600cfm or the 650 cfm.
@@cordelmar I don’t know. I’d need a lot more information than that.
Wonder how many people like me would have just slapped a regular carburetor on a boat. And a distributor. 🥴
It’s pretty common. I know when I get one that’s wanting to be rebuilt if it’s been run on a boat. The non coated ones literally can’t handle any water. Salt or fresh!
Great video. Just bought an Edelbrock 1409. Do you recommend that I get a Edelbrock 8190 Fuel Pressure Regulator and Control as well? Or is this plug and play? Would like to keep fuel pressure at 4.5psi
Always always always use a pressure regulator. The 8190 works well. 4.5-6 is your pressure range to work within.
Greetings, I have the 1409 carb on both of my inboard boats with 351w. they both used to start on the fist bump when the engine is warm. Now both require about 4-5 rotations to start up now, could this be caused by the crappie gas now?
Could be a number of things. Heat soak in the carb. Low fuel/pressure.
If you lock your distributor vacuum can you use a marine carburetor on a car with no power brakes
I have one on my 65 mustang works like a champ.
I am confused, you stated to start around 12btc, my 1982 mercruiser 260hp 5.7L calls for 8btc, I spoke with a boat mechanic who said because fuels have changed, I should set my timing to 4 0r 2btc, does this make any since?
Makes no sense. But retard the timing back that far and see how it runs.
Great Video! Would you use a marine 600 cfm (1409) on a Cadillac 390 or a 750 cfm (1410)? Currently have a 750 but feels like its a bit much for the old 1962 Caddy. Thank you
Depends on the prop speed and the engine RPM.
These old engines should not run much over 3000 rpm's and have a pretty big prop pitch. Does vacuum or mechanical secondary make a big difference when applying power? Meaning is it dumping more fuel in than it can use?? Thank you so much, been looking for solutions for a while.
@@awardsworth it’s a matter of preference and what the combination is. I’ve had excellent luck with both. If it’s more of a milder application, and that low of operating RPM, I’ll usually suggest the 4160 marine carb. A bit easier to tune as it’s not being asked for a ton of rpm or prop load.
What about at altitude? The lake I ride my boat at is at 6000 feet above sea level, do you have any advice for that adjustment?
Mostly the same as an automotive application. I did a video on tuning at altitude. Same basic rules apply.
Is there any chance you can address how to set the mixture screw on these?! I bought a new to me boat and the mixture screws we’re only turned out a half turn, it would fall on its face at around 3k rpm. Turned them out a turn and a half and it runs better but can be hard to start and starts cutting out at 4200rpm.
Once you get past 1000 rpm, the idle circuit gets bypassed and the carb operates through the main metering system. Get a calibration kit and start tuning through that kit.
Can you use a Marine carburetor as a blow through carburetor
On a marine Edelbrock carb? No. Throttle shafts aren’t sealed.
ok now I want that air valve! haha
Stop it! 😆
@@MuscleCarSolutions haha no way dude i want one LOL
Can U use this Marine Carburator on a car ?
It has no vacuum ports.
I came across 1 and put it on 1973 ford pick up 302 I just had to block advance other than that it works great.
@@bigal1559 so you added a spark box to control timing?
@@MuscleCarSolutions No 😔.
@@bigal1559 how are you controlling the advance? PCV? No vacuum assisted power brakes?
The only thing I did not like about my Edelbrock Marine carb was that I had to drill and tap for the PCV valve that my 1971 Chrysler 440 certainly had since it was new. Why does Edelbrock think "Boats don't have PCV valves"? They certainly do, and it's not a great User Experience to drill into a brand new carburetor.
Boats don’t have PCV valves. Go google that. Marine carburetors do not have PCV systems. Any USCG approved carburetor does not have any PCV port, or rear port for a power brakes, or other vacuum ports.
@@MuscleCarSolutions I don't need to Goggle it. I can go look at my factory original Chrysler 440 Marine Engine, and it has always had a PCV Valve since 1971. The 440 Marine Engine Manual lists a part number for the PCV Valve.
@@lawrencebarnes6893 doesn’t really surprise me if that’s accurate that mopar got it wrong. 😆 But I can tell you no coast guard approved carburetors have PCV or any other vacuum ports, which to go back to your original complaint, is why Edelbrock doesn’t either as it’s a USCG approved carb. None have them.
@@MuscleCarSolutions every boat ever ever owned. But OK. Everyone knows everything.
@@MuscleCarSolutions Edelbrock basically copied the Carter Marine Carb. Why did all the Carter Marine carbs have PCV vacuum ports?