Converting to Carb

[Pirate]

I would have thought the metering-rod system would have been more tunable ... though of course a three-step rod would surely be preferable ....

Typically, the metering rod setup is preferable. The problem here is that it's only on the primary side, and the venturi/venturi booster design is rather inefficient. It works okay....but it's not phenomenal.

The secondary side is where the tuning problems turly arise....the non-adjustable air flap design of the basic Edelbrock is a joke....

[Grand Marquis GT]

I probably oughta just get the damned Road Demon next month and quit cheaping out

[1987cp]

This is annoying. It's like $14 cheaper than the one I just installed:

http://www.summitracing.com/parts/SUM-700203/

[gadget73]

Interesting .... I will have to look more into that shortly. Was nifty to pull up a random boat-parts site and find the black AFB. Is that some sort of marine coating to discourage corrosion?

Yes, its called black paint

[91waggin]

Yes, its called black paint

[torquelover]

I probably oughta just get the damned Road Demon next month and quit cheaping out

+1

[Pirate]

I probably oughta just get the damned Road Demon next month and quit cheaping out

Bingo.

[Grand Marquis GT]

Larry, i'm TRYING to listen to you!

What ignition box should I get? I was looking at the Mallory HyFire 6 (Digital)

[Pirate]

Larry, i'm TRYING to listen to you!

What ignition box should I get? I was looking at the Mallory HyFire 6 (Digital)

Tom, I'm just harassing you, lol.

To be honest with you, a good Duraspark with a MSD Blaster 2F coil would work just fine....if you're going to be swapping in a DSII ignition system. If not, either the Mallory or Crane Hi-6 would work.

[Grand Marquis GT]

Yes, I was looking at the Mallory. Cheaper than the MSD, and digital too. Love MSD, but not THAT much lol.

[Grand Marquis GT]

BTW I just bought the Road Demon 525. NOT the JR.

[Pirate]

BTW I just bought the Road Demon 525. NOT the JR.

Oh shit, you bought the wrong carb!

[Grand Marquis GT]

No I didn't, you jackass.

[1987cp]

Larry, I remember a while back you getting on Dave and Colin about *actual* flow capacity of different BG carbs, specifically the 650cfm Speed Demon. Apparently the regular Road Demon is available in 525, 625, and 725cfm nominal ratings - do you have an estimate of how much each actually flows, size of the bores, and what have you?

[Pirate]

Larry, I remember a while back you getting on Dave and Colin about *actual* flow capacity of different BG carbs, specifically the 650cfm Speed Demon. Apparently the regular Road Demon is available in 525, 625, and 725cfm nominal ratings - do you have an estimate of how much each actually flows, size of the bores, and what have you?

No, I don't have specifics....the problem is that each carb is slightly different (and I mean slightly), and it's almost impossible sort of flow-bench testing BG carbs to get actual flow numbers without adding a lot of cost to the price of the carb....which is the reason why a Dambest carb costs $750+ (they test their carbs), and BG doesn't, at least until you get into Dominator range.

Concerning CFM ratings....it's safe to simply add 75-100 cfm to each of those numbers....

525 = 600-625
625 = 700-725
725 = 800-825

....so there you go.

No I didn't, you jackass.

Hey, an extra little smidgen of stress goes great with morning coffee....