Air filter box

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Baldwin
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Air filter box

Post by Baldwin »

Just bought a 1961 948cc which was nicely restored 15 years or so ago. The engine bay looks really clean and the air filter box is sparkling. It's the small cylindrical one with a trumpet like intake. I think this should be an oil bath. Am I right? Instead what I find is a Framm filter sort of squashed in a bit. I would have thought this would restrict airflow. Am I right about that too. What would you do if you had this? Sorry its a bit of a boring post!
simmitc
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Re: Air filter box

Post by simmitc »

1961 948cc should have a cartridge tyle filter, and it sounds like yours is correct. Oil bath was on early cars. I don't have a 948 filter to hand for photo, but will see if I can find an illustration from a parts catalogue for you to look at.
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King Kenny
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Re: Air filter box

Post by King Kenny »

My wifes 1959 048 had the sane air box as you. It works fine and you would not find any advantage in fiddling with it.
1969 Traveller in Almond green. Owned since 1979.
simmitc
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Re: Air filter box

Post by simmitc »

Here youj go, this is correct:
948cc air filter.jpg
948cc air filter.jpg (18.98 KiB) Viewed 56136 times
Baldwin
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Re: Air filter box

Post by Baldwin »

Thanks everyone. Yes the photo is the one I have. Which then is the correct filter number? What's in there at the moment is one like you fit in a 1098 and which is readily available from ESM. The rubber ring at the larger end has been trimmed a bit and its been positioned with this at the bottom.
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geoberni
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Re: Air filter box

Post by geoberni »

markandsuefoss wrote: Sat Dec 13, 2025 6:13 pm Thanks everyone. Yes the photo is the one I have. Which then is the correct filter number? What's in there at the moment is one like you fit in a 1098 and which is readily available from ESM. The rubber ring at the larger end has been trimmed a bit and its been positioned with this at the bottom.
Correct. The same filter, fitted the other way up.... Original Pt No BCA 4582.
Filter 1.JPG
Filter 1.JPG (51.09 KiB) Viewed 56120 times
Filter 2.JPG
Filter 2.JPG (39.44 KiB) Viewed 56120 times
Basil the 1955 series II

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myoldjalopy
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Re: Air filter box

Post by myoldjalopy »

Yes, that is correct - for goodness sake don't go putting oil in there! :wink:
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Re: Air filter box

Post by Baldwin »

Thanks everyone.
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Re: Air filter box

Post by Baldwin »

Got a new Framm filter from ESM and it won't fit over the housing that the air filter box sits on so it looks like it will have to go in upside down.
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Re: Air filter box

Post by jaekl »

They typically don't just drop in and takes a bit of pushing directly on the bottom rubber to move it down the carb inlet.
Baldwin
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Re: Air filter box

Post by Baldwin »

Thanks. I'll try harder!
simmitc
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Re: Air filter box

Post by simmitc »

If you're having a problem, then post a photo of your set up and we'll confirm that all is as it should be, or suggest solutions.
myoldjalopy
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Re: Air filter box

Post by myoldjalopy »

jaekl wrote: Sun Dec 14, 2025 1:17 pm They typically don't just drop in and takes a bit of pushing directly on the bottom rubber to move it down the carb inlet.
Yes, that's right. I have the same set-up and it takes a bit of fiddling to get it in snugly.....but it will go!
Baldwin
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Re: Air filter box

Post by Baldwin »

Got it in. Just being too gentle with the old girl.
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Re: Air filter box

Post by Mervin »

"Got it in. Just being too gentle with the old girl."
Is it just me? 8) :roll:
myoldjalopy
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Re: Air filter box

Post by myoldjalopy »

No.... :lol:
Baldwin
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Re: Air filter box

Post by Baldwin »

I was just expressing my appreciation for the advice, not making a pun
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