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Old 03-25-2013, 12:57 PM   #1
bedfordboys24523
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Default I need to talk to someone that has a dual carb intake on a 21 stud

Thought I found a intake that I could use. 2 issues that I have are that the intake slot for the gen is 3/16 larger than the gen. The other is the fan pulley is a 1/2 more towards the rad than the other pulleys. What gives guys I cann't find a intake that works.
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File Type: jpg intake 003.JPG (140.8 KB, 92 views)
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Old 03-25-2013, 01:56 PM   #2
Rock Hornbuckle
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

There are different intakes for flatheads. Are you certain you have the right one for your engine. Go to speedwaymotors.com, or call them at 800-979-0122, they can get you the right one for your engine.
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Old 03-25-2013, 02:02 PM   #3
hardtimes
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

Quote:
Originally Posted by bedfordboys24523 View Post
Thought I found a intake that I could use. 2 issues that I have are that the intake slot for the gen is 3/16 larger than the gen. The other is the fan pulley is a 1/2 more towards the rad than the other pulleys. What gives guys I cann't find a intake that works.
Hm, appears (second pic) that you've got an even worse problem..if that's possible, with this intake. Looking at second pic, it 'appears' that your pulleys are also 1/2 " or so off...or is that an optical illusion
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Old 03-25-2013, 02:45 PM   #4
Mart
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

Do you have a stock manifold you could put on to check the alignment? If it all lines up, there is indeed a problem with that Edmunds. The extra width shouldn't be a problem but the forward offset probably is. I have an Edmunds that is broken where the generator mounts, I wonder if yours was the the same and has been repaired and ended up being built out somewhat?

Could the front of the manifold be cut back?

By the way, I like the look with the tall risers.

Just also wanted to add that as far as I know, 21 stud (later pump in block) are the same as 24 stud 59A as far as pulley alignment goes, in other words, any manifold should fit and align ok. I'm guessing that pump in block and pump in head 21 studs should also be the same so it does look like there is indeed something wrong with your manifold.

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Old 03-25-2013, 03:06 PM   #5
usered
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

I bought an Offy from speedway and works fine, if you can't get yours to work I would recommend it.
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Old 03-25-2013, 05:31 PM   #6
1931 flamingo
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

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Not to hi-jack the thread, but what is the advantage to the "tall risers"??
Paul in CT
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Old 03-25-2013, 06:18 PM   #7
Jack E/NJ
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

Cooler carbs
Better mixing
Maybe some ram effect
Looks
Carbs can peer over generator better 8^)
Prolly no real advantage tho'

Jack E/NJ
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Old 03-25-2013, 06:49 PM   #8
Walt Dupont--Me.
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

I've got a few performance intakes hanging on my wall and If I remember right at least on has a narrower groove for the gen. i'll try to remember to look at that tomorrow. Walt
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Old 03-25-2013, 07:27 PM   #9
bedfordboys24523
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

I have a copy of John Lawsons book with him building a flathead and doing 400+ dyno runs in the process and hp was gained with the risers.
I cut the mount off a old gen and made one with the right width and welded it as close to the front as possible. It does line up with the other pulleys now. It seems to be strong enough. I guess ill find out.
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Old 03-26-2013, 01:14 PM   #10
hardtimes
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

Nice work! Let us know how it works when run.
Q- when welding on gen like that, any chance of damage to electrical internals
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Old 03-26-2013, 01:28 PM   #11
Mart
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

Well, I hope it's ok, but isn't the generator front cast iron? Will it take the weld ok?

It is quite highly stressed even in stock form, I wonder if the material is like a cast steel like the steering boxes, and hence weldable.

Good luck with it.

Does the manifold look modified at all?

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Old 03-26-2013, 02:14 PM   #12
Charlie ny
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

Bedford,
You are in luck.....the gen pokes out 1/2"....here's what I'd do.
Remove the intake after you absolutely have confirmed you need the gen 1/2" further
back, drive it up to me and I'll mill the gen channel deeper and to the correct width
to trap the gen bracket. This assumes there is enough meat on the nose of the
intake.
This stuff happens all the time.
Charlie ny
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Old 03-26-2013, 07:09 PM   #13
bedfordboys24523
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Default Re: I need to talk to someone that has a dual carb intake on a 21 stud

I didnt do any welding with the gen intact it was disasembled. It took a good weld and seems pretty dang strong 3/8 steel with a 2 1/2x3 square washer. This was not my first choice but there is no material on the intake to remove. I have ordered another intake that the sales rep said I could easily remove 3/16 and I have more gen brackets laying around that I could also remove 3/16 from. But runs good with .042's and gen bracket looks soild when running.
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