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Air cleaner ID?

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Old Jul 25, 2022 | 06:43 PM
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Default Air cleaner ID?

Can anyone tell me what this backing plate fits

? I bought it for the Kehin carb that I just installed but the snorkel hits the pushrod tubes on the rear cylinder. The air intake is also really close to the rear header pipe.

If it is not something that anyone would need, I'm going to cut the snorkel off and use it until I find the correct one. If it fits something unique I will save it and trade it for something I can use. I suspect it is for something older than the '76 carb and '79 FLH I am trying to use it on, but that is just a guess.





 
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Old Jul 25, 2022 | 07:17 PM
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"Pig Snout" backing plate. Used on FX and Sportster models from 1977 to Early 1978. It was MoCos attempt to appease all the folks running around with their panties bunched and complaining about emisson problems. Normally the lower piece is not bent outward. Prior to 1977 the backing plate just followed the contour lines of the chrome-plated steel oval cover. It appears that one may have been modified for some reason because the scoop on the bottom is intended to act as an air intake.







On a Shovel model it looked like this when mounted




In mid '78 MoCo went to the Ham-Can set up







 

Last edited by panz4ever; Jul 25, 2022 at 07:23 PM.
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Old Jul 25, 2022 | 07:46 PM
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Thanks Panz,
I though I was getting the Pig Snout backing plate for my bike but this one has the snorkel facing the rear, other than that everything seems to fit.

It doesn't sound like it's a valuable part so I will just modify it to work. This is the last piece to getting my S&S swapped out to the Kehin
 
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Old Jul 26, 2022 | 07:44 AM
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You Know I'm here to stir ****
Just what did the Old Timers call the Original Air Cleaner then???
you know.... Before there was that giant "thing"
 
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Old Jul 26, 2022 | 08:00 AM
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It looks a little home made form here. Maybe some racer needed more air, but didn't want all of the road debris!??!

I would hold on to it, backing plates seem easy enough to find, that may be something special.

Or maybe it is just junk.
 
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Old Jul 26, 2022 | 08:14 AM
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Originally Posted by Architect
It looks a little home made form here. Maybe some racer needed more air, but didn't want all of the road debris!??!

I would hold on to it, backing plates seem easy enough to find, that may be something special.

Or maybe it is just junk.
Makes me think of a time I thought I needed an Air Scoop on my DragBike... Yes...I did some Dumb things, years ago....
 
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Old Jul 26, 2022 | 11:19 AM
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Just what did the Old Timers call the Original Air Cleaner then???

A "J-slot" carb backing plate



..and if ya didn't want to run that giant "thing" well this was an option...




 

Last edited by panz4ever; Jul 26, 2022 at 11:24 AM.
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Old Jul 26, 2022 | 11:49 AM
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I like that last one!

My indie told me that what I have is PN 29020-71. I looked it up and he's right. It's for an earlier model with Bendix carb I think.

I saw one on ebay for $149. Don't know if it will sell for that but at least I know what I got.

If I don't find something else today I will chop off the snorkel tonight and wrap up this project
 
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Old Jul 26, 2022 | 01:49 PM
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Originally Posted by panz4ever
Just what did the Old Timers call the Original Air Cleaner then???

A "J-slot" carb backing plate



..and if ya didn't want to run that giant "thing" well this was an option...



And yer one of those that calls this the Sportster Air cleaner I suppose???



Note... I think this is the Shovelhead section???
 
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Old Jul 27, 2022 | 11:45 AM
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Originally Posted by Racepres
And yer one of those that calls this the Sportster Air cleaner I suppose???



Note... I think this is the Shovelhead section???

Don't know if I am one of "those" (don't even lnow what that means) but nope that cover style was also used on Shovel FLH and FX models.



Note... I think this is the Shovelhead section?

I apologize for mentioning/referring to and/or placing a picture of a 1965 and earlier motorcycle with a reference to an air cleaner cover.

And if the mods would like, please feel free to delete my post (#9) for violation of policy
 

Last edited by panz4ever; Jul 27, 2022 at 11:52 AM.
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