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Fri Dec 14, 2007 3:40 pm

Me and my son just picked up our first VW 411. I have zero experience with VWs, but I have always loved the way they looked and drove. I know they originally came fuel injected but the one we have someone removed it years ago and put a carb on there. Is there are way to make this a dual carb set up??? Everything I can find only talks about T3s or lower. Any suggestions???

Fri Dec 14, 2007 5:09 pm

You will need a dual carburetor setup with intake manifolds suitable for the Type 4 engine, which luckily was in the late Buses and Porsche 914. Should be no problem to find. Do you have a wagon or a sedan bodystyle?

Fri Dec 14, 2007 7:49 pm

I have a wagon style body. Where is a good place to look for the carb set-up? How about front fenders, they are the only two places there is any rust and I'd like to replace them instead of trying to patch it. Thanks for the info.

Sat Dec 15, 2007 9:06 am

I don't know much about carburetors, but you should be able to find what you need online on ebay, right here on the samba, or more traditional places like cbperformance.com, cip1.com, mamotorworks.com and many others. You may have to look for the kits that say Type 2/1700-1800-2000cc or similar. Has your engine cover been modified to fit the single carb setup? As for front fenders, no aftermarket body/trim parts have ever existed in North America as far as I know. You'll have to scour classifieds/ebay. Somebody in the UK has had some 412's with fiberglass front fenders, but that is all I've ever heard of. How bad is the rust? Depending on your location, patching the existing ones could actually be the most convenient option.

Sat Dec 15, 2007 9:38 am

How about this? (I have no idea of the quality). At least it could get you back on the road for an affordable price with something better than the single progressive carb?

http://cgi.ebay.com/ebaymotors/Weber-Carburetor-Ki...dZViewItem

Sat Dec 15, 2007 8:52 pm

Here is something you might find useful: http://www.thesamba.com/vw/forum/viewtopic.php?t=269378. Enjoy! :D

Wed Dec 19, 2007 11:05 am

In europe, during the last modelyear (1974) injection was replaced that year from the factory (=originally) by a set of single throat 40mm Solex carbs on extremely short vw manifolds. This set was delivered for 1,8 ltr models. There are 75 amd 85hp versions. The difference is either 28mm or 30mm venturi.
You need to look for : PDSIT 36-40 Solex carbs and air cleaners :wink:

Wed Dec 19, 2007 5:25 pm

Thanks for all the info. It will at least get us started down the right path. :D

Sat Oct 09, 2010 10:45 am

Hey man, I am really stumped. I bought a 1971 411 for my kid and the FI had be converted to a single carb. I have pieces of the FI, but not the total system. A modified intake was put in place, and the carb that was placed on the VW 411 is a Rochester BC type one-barrel model 7007200; the same one used on a 53 Chevy Bel Air 6 cylinder. Due to budget issues I have been trying to tweak the issues out and see if I can get a daily runner for my son out of the deal. After rebuilding the carb with a kit from Napa, I did finally get the car running, but I have some big idle issues and top end power issues. Here are the issues:

1. Idle surges up and down (low to moderately high. I installed a Facet Possible EFP3 electronic fuel pump. Around $40. The engine runs but surge idles as mentioned above. Also as mentioned, the top end speed is only around 50 MPH with a pretty long time to build up to that speed. The PSI delivery on the installed fuel pump is around 2.5, but the specs state 1.5 - 4 PSI. I also tried installing a Spectre dial fuel pressure regulator to keep at around 3.5, but that just prevented the car from running altogether, so I pulled it off.
2. Based on what I have read, the Rochester carb installed has a manual fuel pressure PSI at 8 and 130 GPH flow for a 1953 Chevy Bel Air. The engine that this carb was matched with was a 6 cylinder Chevy engine for the 1953-56 Bel Air, a much bigger engine that the VW 411 1.7 L.

So, here are some questions:

1. Do I need to up the fuel pressure to account for the 8 PSI and 130 GPH that the carb is set up for on a 6 cylinder Chevy Bel Air engine? Can it be the pressure at 2.5 PSI is too low for the carb?
2. Will the 8 PSI and 130 GPH be too much for the 1.7 L engine?
3. Should I scrap the whole thing and try to find a carb that would match the project and pray for the funds to accomplish the deed? Really like to keep the cheap if at all possible?

Any help or insight would be great!

Thanks!

RJH