|
Quote:
I just have always toyed with the Webers idea, but darn that carb, it's so darn simple and it does such a great job. |
Quote:
Yes, still a little rich, but getting better with time. Still fussing a little with the idle circuit and getting rid of laminar flow through the hood scoop over the tops of the velocity stacks. Making offset baffles for the scoop. http://www.clubcobra.com/photopost/d...73_Medium_.JPG Saw this on a really nice original 289 FIA car with Webers last Saturday at the LASAAC show. Other than that, I couldn't be happier with the switch. With 40 mm chokes I feel it's getting plenty of air. Well, more than I'll ever be able to handle. |
wow seems you all know alot about webers i had a set of 48 idas on a 390 12.5 cobra jet headed 390 killer it had a 1050 dominator and went 11.30 at 119 changed to the webers and boom 11.02 123.10 in a 3500 pound 67 fairlane i bet 600 plus hp in a cobra is a killer rush thanks guys for all the cool stories 175 165 f2 600 627 256 266 108 cam in the 390 solid cam dynamics oh yea almost there with the 458 427 cant wait jerico no more top loader
|
I also get 6 MPG with my webers 48 IDA's . 25 miles to work 4 gal's of gas . Most of it in traffic ( L.I.E. and Van Wick Expressway ) . Not complaining , love my webers .
|
Quote:
-Dean |
Quote:
Is that you thinking about Webers???!!! Doug and I were discussing this over the weekend.....you need to pull the trigger man. Your cam is fine....my cam is lot more radical and it idles and ramps up the rpm spectrum fine, thank you very much. RE: fuel economy. I averaged about 10.5 mpg on the freeway with the Holley (toploader with 3:31 rear). I now average 10 on the freeway with the Webers, and I think they're still a little rich. Some fuel does indeed wash down into the cylinders after a hot run, but it's not much. Most of it spills onto the intake where the throttle body gaskets are. In any event it's not much. I change the oil every 1500 mi or so, and did that when I had the Holley on it as well. Every 1500 is when I notice the oil down a bit on the dipstick, so I simply change it. Have the lift so it's a 20 min job. Go Webers!!! Call me if you want to talk about them. Tom |
Quote:
Based on conversations with various folks (e.g., Inglese, Pierce, Keith Craft) as well as calculations using information and algorithms from a variety of sources, the optimum choke/venturi size for Webers on my 511 ci FE is between 49 and 52. The 48 mm Webers would not accommodate this large of a choke (from what I've been told for a street car it's not practical to go above a 42 choke with 48 mm IDAs--as low-end performance will suffer). Furthermore, the estimated HP loss from switching from a carb to 48 IDA Webers on my engine ranged from 60 HP to 150 HP (something on which I didn't want to compromise). The good news is it looks like the 48 IDA FE manifold is going to work just fine with the Berg 58 mm IDAs. I will keep folks posted. Stentor |
Quote:
|
Go with the Webers. I run 44 IDF's on a 347 stroker. You need to balance them about every 2 to 3 rides. You will learn that EVERYONE has their opinions on Webers and how to tune them. Best to find out yourself. There are a few good books out there. One of the most frustrating things is the lack of a logical relationship between emulsion tubes and the numbering ID system of those tubes. I have found the Webbers provide great power RIGHT NOW all the way through the RPM range. The also look fantastic. If you have the coin and the time to figure them out, you will love them like I do.
|
Quote:
|
Quote:
I have been tweaking these IDA's a little here and there, but it's a fuel mixture optimization quest. I'm not doing this on a dyno so it's more of a shady tree mechanic thing, but I like it. Quite frankly, I could run forever the way they are right now and not fret. But it's the ever constant quest for just that little more. Besides, like Rick said, it's the most fun I've ever spent on a hot rod in my 60 years...oops, did I just say that? Got to lose a few pounds too. Rodney, it would be my pleasure to come up bayside and give you a hand. Anytime. |
Quote:
|
YOu are correct about the bolt pattern
Al I got gaskets from the friend that has 48 and 58 MM base gaskets. I see now that the bolt patterns are the same from point to point. There will be alot of grinding to get the openings to match and in some spots a very narrow piece of mount surface left to work with. Vacuum issues may be a problem over heat cycles. Time will tell. Rick L.
|
Rick,
I have asked Berg to send a picture of the mounting surface of the 58 carb, ideally next to a 48 carb, similar to the picture above side by side. Stentor, Please post some pics of you new carbs when you get them, ideally the mounting surface with a ruler along side. From what I have read and heard, there should not be any problem and no modifications needed but we will know when Stentor gets the carbs. Thanks, Full Throttle Al |
Ever see pictures of the 58mm Webers mounted on a manifold with the carbs in a row (that's what I'd call it) much like on a Ferrari, pretty unique and easier to syncronize for sure. I'm amazed at the phyisical size difference between the 48's & 58's.
|
Rare Manifold
Rick Parker Wayne J is the only one I know with that manifold. Not sure how many where made but it's sharp to look at . The big thing was it's on a Cammer:eek::MECOOL::MECOOL::MECOOL::D:D:D Rick L.
|
|
|
1 Attachment(s)
Many discussions on this forum about Webers from tuning to performance to cost, etc. I have never regretted going with my 48IDA's. When you get into the tuning process, you'll actually hear your engine talk to you and tell you what makes it happy. Stumbles, backfires, carbon deposits on the plugs are the equivalent of a baby crying. It's telling you it's not happy and now the journey begins in giving it what it wants. Once you hit the setup and stuff that throttle to the mat, any doubts you had about whether or not to take the Weber plunge disappears instantly.
|
Rick,
We are both correct. Per the response below from Berg, the mounting pattern for the 58 carb is the same as the 48 IDA but modification of the manifold IS required: Mr. Sorkey, Our Berg IDA carbs have the same stud pattern as the original Weber 48 IDA. The top of the intake manifold needs to be opened up for the larger throttle plate in our carbs. Sincerely, GENE BERG ENTERPRISES Tim Walker Parts Manager |
| All times are GMT -7. The time now is 05:05 PM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: