lars
Tuning for Beer World Tour
Wow, that's quite the warm welcome, and from a bunch of guys I've known for years - very impressive! I have a lot of projects going, so I won't be lurking here on an hour-by-hour basis, but I'll check in and lend any assistance I can. For anyone needing to get in touch with me quicker for any issues or tech problems feel free to drop me an e-mail at:
[email protected]
I get around 50-70 e-mail tech requests per day, so if you get a short, to-the-point answer from me it's not because I'm being rude with you.
Darrow -
The stock mechanical diaphragm pump (or a similar style mechanical pump) produces pressure "strokes," so you will see a fuel gauge needle bounce around a bit unless the gauge has very good damping (fluid filled). A bouncing needle is normal, but if you want it to smooth out, get a good quality fluid dampened guage.
For reliable performance from that engine, available fuel volume is more important that high pressure - we have run our drag cars with as little as 3 psi of pressure, but with lots of volume running through a return-style system. Although the Holley style carbs, such as your ProForm, can take up to 7 psi without problems, I find that the needle/seat fuel control and smoothness of operation deteriorates as pressure gets up towards this limit, making float level a little more unprecise and erratic. For this reason, I like to run about 4-5 psi, with the pressure being controlled using a return-style regulator to keep lots of fuel volume flowing by the carb inlet.
I can take a good ribbing and a few jabs. It's rude, ignorant stupidity that I find myself having a lower tolerance limit for. When people who don't know what they're talking about give technical advice that's downright incorrect, I tend to raise the BS flag. Have you ever tried arguing with one of the guys from the Flat Earth Society? It comes down to being a poiontless waste of time. I'm old enough that I don't have pointless time to waste... But I'm fair game for a good jab.
Les!
Good to see you again! Do you still have the photo of what I did to your car with the sledghammer last time I saw you...?
Lars
[email protected]
I get around 50-70 e-mail tech requests per day, so if you get a short, to-the-point answer from me it's not because I'm being rude with you.
Question with a proform on a 454 what kind of fuel pressure should I see at the carb and how steady should it be? Stock fuel pump.
Darrow -
The stock mechanical diaphragm pump (or a similar style mechanical pump) produces pressure "strokes," so you will see a fuel gauge needle bounce around a bit unless the gauge has very good damping (fluid filled). A bouncing needle is normal, but if you want it to smooth out, get a good quality fluid dampened guage.
For reliable performance from that engine, available fuel volume is more important that high pressure - we have run our drag cars with as little as 3 psi of pressure, but with lots of volume running through a return-style system. Although the Holley style carbs, such as your ProForm, can take up to 7 psi without problems, I find that the needle/seat fuel control and smoothness of operation deteriorates as pressure gets up towards this limit, making float level a little more unprecise and erratic. For this reason, I like to run about 4-5 psi, with the pressure being controlled using a return-style regulator to keep lots of fuel volume flowing by the carb inlet.
Glad to see you , hope you don't have a high Marginal Propensity to get Pissed OFF.....
not here anyway......
:yahoo::yahoo::1st:
I can take a good ribbing and a few jabs. It's rude, ignorant stupidity that I find myself having a lower tolerance limit for. When people who don't know what they're talking about give technical advice that's downright incorrect, I tend to raise the BS flag. Have you ever tried arguing with one of the guys from the Flat Earth Society? It comes down to being a poiontless waste of time. I'm old enough that I don't have pointless time to waste... But I'm fair game for a good jab.
Les!
Good to see you again! Do you still have the photo of what I did to your car with the sledghammer last time I saw you...?
Lars