Single carburetor setup, Setup single carburetor/distributor for a 1.8 |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
Single carburetor setup, Setup single carburetor/distributor for a 1.8 |
cmxiv 74 |
Aug 10 2017, 02:04 AM
Post
#1
|
Newbie Group: Members Posts: 11 Joined: 9-August 17 From: Los Angeles Member No.: 21,334 Region Association: Southern California |
Hi, I need to know if anyone around has a functional, decent (not performance, not perfect) setup that involves a center mounted carburetor on a 1.8 L engine. While I'm new to the subject I'm well aware about the inefficiency of the center mounted single carburetor setup on 914. Yes, it sucks ! But I have to deal with the facts and the reality. This are the facts: I bought my 74 1.8 already converted on single carburetor, (looks like a Weber, made in Spain, no other markings visible without removal) paired with a centrifugal advance distributor (not sure what model, no markings visible without removal) not know when was converted, or if the engine is stock or not. While has a decent acceleration response, decent power it runs very bad, inconsistent warm startup, high idle, rich, overall I can't find a "sweet spot". So far I changed the points, condenser, wires, spark plus, spark wires, distributor cap and rotor. The car is in what I call "active" repair/restoration which means that I have to keep it running and do work on it whenever I have the time and a place to work on it. So far is in my friends shop but while I will continue to have shop access I can not keep it there anymore, so it has to be parked on the street (it is registered and insured). For now I have to keep the car running with a single carburetor, so any other option is out.
Now... not sure if the centrifugal distributor is a good idea for this already bad setup, but I need opinion and advice from people who know how to do a proper setup for a single carb. I will add more info and photos over the next days Thank You ! PS. It looks like I have a 1.7 L not 1.8.The engine serial nr starts with EA, assigned to a 1973 1.7 L. Attached thumbnail(s) |
struckn |
Aug 10 2017, 12:39 PM
Post
#2
|
Senior Member Group: Members Posts: 1,069 Joined: 9-November 11 From: South Central York Pennsyvania Member No.: 13,764 Region Association: MidAtlantic Region |
Here's my '74 with same set up. If tuned correctly and float adjusted right it isn't a bad set up. Only thing you must be aware of is that the Cam should be for carb not Fuel Injection. FI was the way they came when new. Also I think this is the only set up that has Electric Choke to help with satrating, and these are quiter then dual carb, The fuel mileage is better too.
https://youtu.be/H4t0M2wrhu8 |
cmxiv 74 |
Aug 11 2017, 01:29 AM
Post
#3
|
Newbie Group: Members Posts: 11 Joined: 9-August 17 From: Los Angeles Member No.: 21,334 Region Association: Southern California |
Here's my '74 with same set up. If tuned correctly and float adjusted right it isn't a bad set up. Only thing you must be aware of is that the Cam should be for carb not Fuel Injection. FI was the way they came when new. Also I think this is the only set up that has Electric Choke to help with satrating, and these are quiter then dual carb, The fuel mileage is better too. https://youtu.be/H4t0M2wrhu8 No clue about the cam and no clue how to have it check without a huge mess. The electric choke is there and functional, probably set for warm climate (So Cal). I'm familiar with the electric choke system from Type 1/Pict on Beetle and KarmanGhia. Regarding being quiet...Can't tell ... the exhaust/muffler is really loud, it might be some performance package, not sure , but I have to dig around to find out. Are you running a centrifugal advance distributor or vacuum ? If vacuum , where is connected ? Thank's |
struckn |
Aug 11 2017, 02:41 PM
Post
#4
|
Senior Member Group: Members Posts: 1,069 Joined: 9-November 11 From: South Central York Pennsyvania Member No.: 13,764 Region Association: MidAtlantic Region |
Reply, My 1.8 single carb car's distributor has a Pertronix Electronic module, or similar electronic module. It came installed on the car from the previous owner, no points, no vacuum advance, advance is done electronically. |
Lo-Fi Version | Time is now: 26th September 2024 - 11:15 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |