|
|
|
|
| Author |
|
|
Registered
Join Date: Jul 2010
Location: Houston
Posts: 824
|
Carb conversions - any articles?
I've been Googling away, but coming up empty. Are there any articles or posts that discuss a carburetor conversion from CIS? What parts are needed, how to do it, etc? I have a 3.0L and thinking of converting to carbs.
Thanks. |
||
08-11-2010, 10:07 AM
|
|
|
Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
|
You need a complete carburetor kit that contains everything for the conversion. Its very easy IF you have all the right components and tools at hand.
PMO assembles a kit that has custom jetted carbs, the correct manifolds, insulator kit, linkage, air cleaners, breather plumbing, fuel pressure regulator, fuel filters, etc. Get the distributor rebuilt & recurved and you'll be totally amazed at the difference,... 
__________________
Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
||
|
08-11-2010, 10:14 AM
|
|
|
Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
|
Do a search of this forum. Then sit back with a cold one and enjoy the wealth of information.
__________________
Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage |
||
|
08-11-2010, 10:32 AM
|
|
|
Registered
Join Date: Jul 2010
Location: Houston
Posts: 824
|
Quote:
|
||
|
08-11-2010, 10:38 AM
|
|
|
Under the radar
Join Date: May 2007
Location: Fortuna, CA. On the Lost Coast near the Emerald Triangle
Posts: 7,129
|
Quote:
You can search the parts forum. Webers show up there all the time. Keep in mind that rebuild kits are about $150 and that does not take into account the throttle bushings or jetting or venturis.... You will be time and money ahead with the PMO kits. The new PMO carbs have a host of advantages over 40 year old webers. Of course if you are not in a hurry and a hard core DYI guy, like me, you could piece it a together. Edit: there are a couple of required books like http://www.pelicanparts.com/cgi-bin/smart/more_info.cgi?pn=BK-135124&catalog_description=How%20to%20Rebuild%20and%20Mod ify%20your%20Porsche%20911%20Engine and Bruce Anderson's 911 performance handbook.
__________________
Gordon ___________________________________ '71 911 Coupe 3,0L outlawed #56 PCA Redwood Region, GGR, NASA, Speed SF Trackrash's Garage :: My Garage Last edited by Trackrash; 08-11-2010 at 11:24 AM.. Reason: added url |
||
|
08-11-2010, 10:51 AM
|
|
|
Registered
Join Date: Dec 2002
Location: Dahlonega , Georgia
Posts: 14,705
|
I have two 3.0's running carbs. My SC has 46mm PMO's that I purchased new. Recurved distributor by Barry Hershon. Runs like a top. After sitting for 2-3 weeks I pump the throttle a few times and she fires right up. I have to feather the throttle for 15 - 20 seconds and she settles right in. Driveability and response are fantastic. I can get 17 - 17.5 mpg on the highway. Total cost around $4000.00 when you add everything up. The 3.0 in my 914 has Weber 40's. Once warmed up she runs quite well but very cold blooded compared to the PMO's and I live in Florida
 . Everything about the Webers is not as good as the PMO's. For this car I had Jerry Woods recurve the distributor. The difference is night and day between the two cars the PMO's are that good.
__________________
2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser. 1999 996 C4 coupe black/grey with FSI 3.8 engine . Rear diffuser , front spoiler lip with ducktail spoiler . |
||
|
08-11-2010, 02:56 PM
|
|
|
My Garage
1971 Porsche 911
Baja Bug
