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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: Labratt]
#859337
11/23/10 09:29 PM
11/23/10 09:29 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
... Sounds like on a stock stroke 440, the annular would work better! 
Only if you can get it to run cleanly down low and not pull too much fuel at high(er) RPM.
Quote:
Kind of hard to believe the annular model would flow 1050cfm.   
That's because it DOESN'T. Annular boosters in a 4150 venturi probably knock off as much as 100 cfm compared to a downleg in the same carb.
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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: Labratt]
#859339
11/24/10 02:32 AM
11/24/10 02:32 AM
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Joined: Mar 2003
Posts: 9,099
Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,099
Rogue River, OR
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Quote:
Jeremiah...on one of your previous posts you said you purchased a 1050 main body..before buying a complete carb. Do you still have the 1050 main body that I could try out??? Was it a downleg..or annular booster model??? Sounds like on a stock stroke 440, the annular would work better! Kind of hard to believe the annular model would flow 1050cfm.  BTW...Looks GOOD!!!
All I have at this time is the 1050AN carb. If you wanted to give it a shot I'd be happy to loan it out. All my beater is good for is getting the cops called and people giving me a hard time about it sitting around.
Thank you for the compliment!
Let me know if I can help you out. It's always nice to save eight or nine hundred dollars on a pipe dream.
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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: Labratt]
#859341
11/24/10 12:29 PM
11/24/10 12:29 PM
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Joined: Nov 2003
Posts: 2,131
New Lenox IL
cudadon
top fuel
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top fuel
Joined: Nov 2003
Posts: 2,131
New Lenox IL
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"AND NOW FOR SOMETHING COMPLETELY DIFFERENT!!" Is E-85 available in your area?  It would probably be best to wait til late spring when the ethanol percentages get higher. Plus the tracks will be open and you can have results. But.... I have an E-950 you could test after you sort out your carbs and THEN see what E-85 can do! Don
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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: Labratt]
#859345
11/24/10 02:07 PM
11/24/10 02:07 PM
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Joined: Nov 2003
Posts: 2,131
New Lenox IL
cudadon
top fuel
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top fuel
Joined: Nov 2003
Posts: 2,131
New Lenox IL
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Quote:
Thanks Don! Not sure if e-85 would work all that well in my 10:25 440,especially just running a Holley GPH110 mechanical fuel pump! But....I'm game to give ANY carb a try-out!  Thanks for the offer..would be intriguing,though!
Randy the compr. wouldn't be a problem, but the fuel system may not be up to the 30% volume increase to be safe.
Happy Thanksgiving!
Keep us posted on your results, Don
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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: Labratt]
#859346
11/24/10 02:28 PM
11/24/10 02:28 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
Brad...I believe that! Even if it does decrease it by 100cfm...it would still flow more than BOTH,the 850,and the 950! 
The problem, IMO, is advertised carb "sizes" these days don't seem to match up to actual CFM capabilities. I'd have to dig 'em up, but IIRC some actual wet flow #s that BG provided when the Gold / Silver Claws came out (predecessors to the Demons) showed that the 1.56" venturi w/ annular boosters flowed no more (maybe less?) than a 1.42" venturi w/ downleg boosters.
I've tried the 1.56" w/ annular boosters configuration, which is basically what a Mighty Demon 850 Annular is, and it didn't run any better on the track than the 1.42" w/ downleg config that is listed as an 825, and it actually ran much crappier on the street.
The only way I'd try the annular booster config again w/ a 4150 would be w/ the 1.59" venturi, since that extra .030" in venturi size -- according to that same BG data I mentioned above -- seemed to free up a few CFM.
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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: Labratt]
#859348
11/24/10 09:03 PM
11/24/10 09:03 PM
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Joined: Mar 2003
Posts: 9,099
Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,099
Rogue River, OR
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Quote:
Jeremiah,that's a favor that's hard to pass up!  Like I stated earlier in this post..winter is upon us,and I won't be able to do any dragstrip testing until the spring,but still plan on taking the X down the road on 50*+ days..whether they're in December..February...or April!  I'd really like to have an idea whether the 1050 is going to be feasable in my STREET car that I race..with a goal of going 10's....and still be able to drive anywhere,within a reasonable distance! The 4:56 gears somewhat limit cross-country jaunts,however!  Again..Thank You for your generous offer! I'll PM You my address!
Give me an idea what air bleeds, jets, and PV's, squirter's, etc. you want in it and get me your address. If you want I can send some tune up parts to try as well. Maybe putting everything back to stock will be the best way to go? There is enough ice on the streets here that my car won't move until March. If I need to beat up on the locals on I'll toss on my 850 for some street action. 'Hope you like the smell of 110!
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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: BradH]
#859349
11/25/10 03:33 PM
11/25/10 03:33 PM
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Joined: Mar 2003
Posts: 9,099
Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,099
Rogue River, OR
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Quote:
Quote:
Brad...I believe that! Even if it does decrease it by 100cfm...it would still flow more than BOTH,the 850,and the 950!
The problem, IMO, is advertised carb "sizes" these days don't seem to match up to actual CFM capabilities. I'd have to dig 'em up, but IIRC some actual wet flow #s that BG provided when the Gold / Silver Claws came out (predecessors to the Demons) showed that the 1.56" venturi w/ annular boosters flowed no more (maybe less?) than a 1.42" venturi w/ downleg boosters.
I've tried the 1.56" w/ annular boosters configuration, which is basically what a Mighty Demon 850 Annular is, and it didn't run any better on the track than the 1.42" w/ downleg config that is listed as an 825, and it actually ran much crappier on the street.
The only way I'd try the annular booster config again w/ a 4150 would be w/ the 1.59" venturi, since that extra .030" in venturi size -- according to that same BG data I mentioned above -- seemed to free up a few CFM.
Brad, thank you for giving your insight. It's fun to read your tech info and always helpful for a "poser" like myself. You reasoning is exactly why I decided to try an annular carb over my downleg 850. I also wanted to see if the annular booster ran better on a single plane at 4000' altitude. Carbs do strange things out here in the desert.
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Re: CARB CHANGE EXPECTATIONS??!!!
[Re: Jeremiah]
#859352
11/25/10 06:35 PM
11/25/10 06:35 PM
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Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Quote:
... I also wanted to see if the annular booster ran better on a single plane at 4000' altitude. Carbs do strange things out here in the desert.
I didn't realize K-Falls is that high up. One of my brothers worked in that area for quite a while before ending up in Idaho. Yeah, I'm sure the proper tune for those conditions would be significantly different from what I use here near sea level in the Mid-Atlantic.
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Thanks guys,for all your opinions! Should be fun testing these out in the future! 
