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Old 01-18-2013, 01:57 AM   #1
52merc
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Default offenhauser twin carb inlet

a friend has one of these and just discovered that the geanerator slot is off set,any reason for this,, thanks
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Old 01-18-2013, 02:03 AM   #2
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Default Re: offenhauser twin carb inlet

The front carburetor would otherwise interfere with the generator.
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Old 01-18-2013, 02:40 AM   #3
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Default Re: offenhauser twin carb inlet

In a 8ba motor this puts the fan and generator offset which looks weird in a hot rod with no hood, and puts offset loads on pulleys. the fan is 1 1/4" off to the left .Is there a way to correct this off set ? A powergen generator is shorter than an original ( think) so clearance may not be an issue.
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Old 01-18-2013, 07:40 AM   #4
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Default Re: offenhauser twin carb inlet

I also have an offy dual carb manifold that I planned on using on my 8ba powered 41 ford and I don't like that offset,i also have an edelbrock 4 bbl intake and it mounts the gen in stock location,im leaning on the edelbrock as I might want to use a fan shroud,and the offy would be a problem with its offset...
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Old 01-18-2013, 08:16 AM   #5
51 MERC-CT
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Default Re: offenhauser twin carb inlet

Quote:
Originally Posted by my4dv8 View Post
In a 8ba motor this puts the fan and generator offset which looks weird in a hot rod with no hood, and puts offset loads on pulleys. the fan is 1 1/4" off to the left .Is there a way to correct this off set ? A powergen generator is shorter than an original ( think) so clearance may not be an issue.
Mine is a 4bbl. Offy and it is offset to the passenger side by 7/8"
(not 1 1/4" )
And yes there is a way to correct it.
In my case I fabricated a new fan/pully mount.
This is the new mount.
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Old 01-18-2013, 08:26 AM   #6
Walt Dupont--Me.
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Default Re: offenhauser twin carb inlet

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Quote:
Originally Posted by 51 MERC-CT View Post
Mine is a 4bbl. Offy and it is offset to the passenger side by 7/8"
(not 1 1/4" )
And yes there is a way to correct it.
In my case I fabricated a new fan/pully mount.
This is the new mount.
Nice job on the offset. I have an Offy 4bbl intake on an 8BA I've just about all done. it's on one of my engine stands. I'll have to check and see if it's offset. Walt
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Old 01-18-2013, 08:38 AM   #7
51 MERC-CT
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Default Re: offenhauser twin carb inlet

Quote:
Originally Posted by Walt Dupont--Me. View Post
Nice job on the offset. I have an Offy 4bbl intake on an 8BA I've just about all done. it's on one of my engine stands. I'll have to check and see if it's offset. Walt
If it's offset there is no reason to correct it unless there are interference
problems. In my case I have a fan shroud which the fan hit.
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Old 01-18-2013, 01:18 PM   #8
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Default Re: offenhauser twin carb inlet

This is a regular twin so perhaps the off set is different.
Did you just cut off the original fan bracket base and re weld it further over?
Are these cast or forged? How would the welding heat affect the fan hub?
Thanks.
Quote:
Originally Posted by 51 MERC-CT View Post
Mine is a 4bbl. Offy and it is offset to the passenger side by 7/8"
(not 1 1/4" )
And yes there is a way to correct it.
In my case I fabricated a new fan/pully mount.
This is the new mount.
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Old 01-18-2013, 02:30 PM   #9
Ol' Ron
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Default Re: offenhauser twin carb inlet

I have an Offy 4bl intake for an 8BA and it's not offset.
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Old 01-18-2013, 02:43 PM   #10
51 MERC-CT
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Default Re: offenhauser twin carb inlet

Quote:
Originally Posted by my4dv8 View Post
This is a regular twin so perhaps the off set is different.
Did you just cut off the original fan bracket base and re weld it further over?
Are these cast or forged? How would the welding heat affect the fan hub?
Thanks.
The intake manifold was not altered. I just fabricated a new fan/pulley mount out of 3/4" flat stock and a short piece of round stock plus mat. for gussets. This provided a welded platform to drill a hole for the original pulley shaft to be pressed into. This only moves the fan/pulley to where it belongs. The alt. is mounted in its original location.
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Old 01-18-2013, 02:49 PM   #11
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Default Re: offenhauser twin carb inlet

Quote:
Originally Posted by Ol' Ron View Post
I have an Offy 4bl intake for an 8BA and it's not offset.
Would like to see a pic of it. Sounds to me like it may be an early production model. After looking at many over the years I have never seen one that is not offset.
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