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BFB Samba Member

Joined: November 03, 2014 Posts: 2669
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Posted: Mon Jul 21, 2025 6:54 pm Post subject: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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i just got this, i really like odd vintage car shit , saw this on eBay and made an offer for it. No i dont plan to use it , not sure even I’d want to risk any of this thing making it down an intake and into a head or cylinder.
Im also not going to say anything to point things out , just gunna let ya’ll look at it and have fun.
Any questions, just let me know and I’ll let you know what i see.
God i hope one of ya’ll ran or knew someone that ran one of these things…
_________________ "how am i supposed to torque the rear wheel nut to 250 ft lbs??? " - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
Most experts aren't. |
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FarmerBill  Samba Member

Joined: July 25, 2017 Posts: 865 Location: New England
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Posted: Mon Jul 21, 2025 7:09 pm Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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Love the gas gimmick products. I didn't realize the business was so old.
So this thing is what looks to be a calibrated vacuum leak with a pair of brass spinners.
But save up to $75 a year! In late 1940s dollars that's like $1000 today.
My Uncle sold a water injection gas saver system in the 70s. I wish I still had one around today but the last one went when we cleaned out the barn years ago.
Cool find. |
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Glenn  Mr. 010

Joined: December 25, 2001 Posts: 79514 Location: Sneaking up behind you
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Posted: Mon Jul 21, 2025 7:10 pm Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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Will it be better than this?
_________________ Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare
עַם יִשְׂרָאֵל חַי |
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BFB Samba Member

Joined: November 03, 2014 Posts: 2669
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Posted: Mon Jul 21, 2025 8:18 pm Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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Glenn, that was proved to produce more hp gains on a stock 1600 than most other off the shelf bolt on performance products... sorry man, they ruined that one for ya.
although im not sure that it needs a blow off valve _________________ "how am i supposed to torque the rear wheel nut to 250 ft lbs??? " - clonebug
An interesting thing happens in forums where everyone starts parroting the same thing and "common knowledge" takes over.
Most experts aren't. |
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busdaddy Samba Member

Joined: February 12, 2004 Posts: 52785 Location: Surrey B.C. Canada, but thinking of Ukraine
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Posted: Mon Jul 21, 2025 8:25 pm Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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Now you've done it, JC Whitney is going to spam your mailbox with catalogs and flyers, your mail carrier will hate you. _________________ Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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Rob Combs Samba Member
Joined: December 30, 2020 Posts: 538 Location: South Bay LA, California
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Posted: Mon Jul 21, 2025 9:03 pm Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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The BOV is probably a little optimistic.
As to the original post pics, I remember my dad playing around with something similar back in the late 70's/early 80s. The only difference he got, with an old Monte Carlo with either a 305 or a 307 (I don't remember which) was a little better fuel mileage. May have been from better atomization from the blades spinning in the fuel/air mix under the carb.
I don't remember a vent on the vacuum side of the carb on dad's contraption, but if it had one, that would explain the fuel mileage increase - at the expense of shortened engine life by running too lean.
Plus how's that not a fire hazard in the event of backfire?! Is the screen a flame trap? |
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NJ John Samba Member

Joined: September 21, 2007 Posts: 2885 Location: HdG, MD & NJ
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Posted: Tue Jul 22, 2025 9:47 am Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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Perfect for under your bug spray! I would hate to swallow an “e” clip. _________________ 1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage |
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oprn Samba Member

Joined: November 13, 2016 Posts: 14778 Location: Western Canada
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Posted: Wed Jul 23, 2025 3:29 am Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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Glenn wrote: |
Will it be better than this?
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No. I would step out on a limb and guess yours is the clear winner. _________________ Our cars get old, we get old but driving an old VW never gets old! |
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FarmerBill  Samba Member

Joined: July 25, 2017 Posts: 865 Location: New England
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Posted: Wed Jul 23, 2025 4:58 am Post subject: Re: zepyhr vintage mini supercharger, ya’ll are gunna like this |
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Rob Combs wrote: |
I don't remember a vent on the vacuum side of the carb on dad's contraption, but if it had one, that would explain the fuel mileage increase - at the expense of shortened engine life by running too lean.
Plus how's that not a fire hazard in the event of backfire?! Is the screen a flame trap? |
I'm guessing that the pinhole vacuum vent hole got plugged up pretty quick having no real air filtration. Probably worked just long enough for folks to notice a slight increase in mileage and then lost effectiveness around the time you stopped counting miles to gallons. |
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