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Zenith vs PMO
I have recently purchased a 1971 911T 2.2 which I intend to restore over the next few years. I can see the Zenith 40 carburetors are in dire need of rebuilding and I have been talking to a local Porsche mechanic and he is suggesting that I don't waste the time and expense of rebuilding these 45 year old carburetors and I should replace the Zeniths with the PMO carburetors. I am not looking for speed just reliability. Before I go down this path I am seeking for any advise?
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10-21-2016, 05:03 AM
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Administrator
Join Date: Aug 2016
Location: Los Angeles, CA
Posts: 6,087
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Welcome to the forum! I've attached a few links from our site's tech articles that I think you'll find very helpful in making your decision in regards to the carbs. Best of luck!
 Porsche 911 Carburetor Adjustment, Balance and Tuning | 911 (1965-73) | Pelican Parts DIY Maintenance Article Porsche 911 Carburetor Rebuild | 911 (1965-73) | Pelican Parts DIY Maintenance Article -Dmitry |
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10-21-2016, 01:13 PM
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Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
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If you intend to keep the motor stock, or near stock, there is no reason to switch to Webers or PMOs, unless you want the bling, want to fiddle with the setup, are willing to spend $4k, or are going to greatly modify your motor.
The fact is, Zeniths are more efficient than Webers (not sure how PMOs compare) and on a stock motor they run great. They shouldn't be that hard to rebuild. Just make sure you replace the needles and seats as part of the rebuild.
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Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage Last edited by Trackrash; 10-21-2016 at 02:38 PM.. |
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10-21-2016, 01:27 PM
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Registered
Join Date: Jan 2004
Location: CT
Posts: 11,538
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Get in touch with Paul Abbott at Performance Oriented. Very experienced in Porsche 911 carbs.
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Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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10-21-2016, 03:47 PM
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Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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Zenith's are VERY good and I'd do everything possible to retain them, unless higher power is required.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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10-21-2016, 11:13 PM
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Registered
Join Date: Feb 2004
Location: UK
Posts: 2,230
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Quote:
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10-22-2016, 02:18 AM
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Zenith vs PMO
Thank you to everyone that replied to my question about staying with my Zenith carburetors vs. changing to the PMO's for my 1971 911T. I am reconsidering the idea of changing.
Dave |
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10-25-2016, 04:27 AM
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Porsche 911T
BMW Wagon
Caddy
My Garage
1971 Porsche 911
Baja Bug
