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Post by spud on Dec 20, 2019 11:25:55 GMT -8
I can fix those old Kenwood stereos. Probably better than I can figger out what's forked in a distributor. I was thinking of you all along ...actually fishing for your response.
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Post by 69Rebel on Dec 20, 2019 11:44:45 GMT -8
lol Send me a PM with the particulars.
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Post by spud on Dec 21, 2019 6:30:03 GMT -8
Will do. I ordered a pro flow 4 this morning. Might get here middle of january. Best way to see what its all about.
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acm
Cool Froods
Posts: 310
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Post by acm on Dec 21, 2019 15:36:05 GMT -8
Well it's about time spud. I've been looking at ordering a PF4 also before the end of the year. My set up is a bit different than yours, a 360 in an AMX set up for hauling lawn chairs.
I've been messing with the carb on a n old Ambassador for a month or so now. Made me realize how much I like tuning with a laptop and I'm pretty much done with carbs now.
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Post by spud on Dec 21, 2019 18:04:52 GMT -8
So electronics is something i honestly dont embrace, as much as accept. I accept electronic ignitions, they are not sophisticated. They are not digital or require software. This fuel injection does, and in my veiw does not really fit the car, or my idea of a muscle car. I’m not done with carburetors. They have become a nuisance simply due to pump fuels properties. My car has numerous upgrades. When i think about it quite a lot is not 1969 amc javelin anymore. I consider even the 304 and 998 chrysler trans major improvements over the 290/ borgamatic it came with. So it goes. I do not expect to do any tuning. With the pf4, its supposed to tune itself.
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acm
Cool Froods
Posts: 310
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Post by acm on Dec 21, 2019 19:34:25 GMT -8
spud, I kinda agree with you that EFI doesn't fit the these cars but I'm pretty comfortable with electronics. The car will probably get started with the Demon carb that was on it it last time it ran before I jack with EFI and the extra variables associated with it.
To me the biggest challenge is the fuel system. An in-tank pump is the way to go. Probably will draw one up and have it built so that it fits in the stock location and looks relatively normal.
Started mocking up the accessories and the fucking water pump pulley is off by roughly 1/8"!!!
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Post by spud on Feb 26, 2020 4:26:36 GMT -8
Well ive had this fuel injection setup for two months and it hasn’t given me a lick of trouble. Well except the box is kinda big and takes up a lot of space in the living room. I just vacuum around it. Maybe when it warms up i can install it. Need to get smaller injectors for the 304. I think it comes with 32’s and the matrix chart sez i need like 24’s for a stock 304. Thats my big hold up. And i gotta get a fuel system. The avs-2 is poor (and lazy) mans fuel injection, it has been working very well. I just keep the tank full of fresh corn-o-leen and drive it every couple days. The electric fuel pump is a major plus in trouble free startup
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Post by PHAT69AMX on Sept 25, 2021 12:46:01 GMT -8
Ok, obviously the difference is understood between carburetors & EFI EFI has it's obvious atomization advantages... with it's piezo electric or whatever injectors and all... ok but so... When it comes to carbs on the other hand Many folks argue that for good snappy throttle response and driveability it's best to ere on the side of caution and go with a smaller 600 cfm carburetor for example, which has... 4x 1-9/16 Throttle Blades & 2x 1-1/4 + 2x 1-5/16 Venturi. 4x 1-1/4-ish dia intake openings at the tightest point in general terms. Now here along comes Edelbrock ProFlo 4 Injection Kit... The Main Body in that thing has 4x 1-3/4 Throttle Blades and strait through unobstructed passages in the throttle body. And yeah I know it doesn't have to atomize and all & the injectors handle all that, but... And hear tell guys how much they just love there ProFlo4... How is that ?... I'd think velocity would be like zilch and those 4 huge butterflies would provide poor "throttle response" on say a 360 CI ?... Especially compared to basically 4 holes only 1-1/4 to 1-5/16 in diameter like in a 600 carb... So did some math, AREA calculations... The tightest main air intake point in Square Inches
6.05 = AFB venturi, not butterflies 5.16 = 4776 & 77, 600 & 650 venturi 5.94 = 4779 750 venturi 9.62 = ProFlo 4 1-3/4" dia or a single 89mm Throttle Body
I'm confused... what is it I'm missing ?... ? Peace
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Post by 69Rebel on Sept 25, 2021 13:06:30 GMT -8
If you start whipping out the spreadsheets, the hammer might swing. You better get another AMC right away, you need one.
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Post by landbarge on Sept 25, 2021 13:23:40 GMT -8
Throttle body flow capacity shouldn't really matter when the injector is at the port.
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Post by spud on Sept 25, 2021 14:01:02 GMT -8
Carb sizing, velocity, turbulence , intake heat, dual plane, all those essentials with wet flow carbureted MIXTURE DELIVERY, are unnessesary in an direct port injection system. The valve opens and air rushes through the valve window along with a shot of atomized fuel. It all happens right there. No need for velocity through a venturi, to meter fuel, vacuum and velocity and or heat in a manifold to keep it mixed with the air, there is no real “ throttle response” needed. It is now “ nozzle response”
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Post by landbarge on Sept 25, 2021 14:09:00 GMT -8
It's as fast as the electronics allow
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