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Can you install a 34 carb on a Type 3 right out of the box?
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toddgsanford
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PostPosted: Tue Nov 22, 2011 8:54 pm    Post subject: Reply with quote

the 34 ict I had once upon time did not have the balance tube and would not synch for crap either.
ditched them
Pierce manifolds I have used fo rjets and have found to be a pretty good supplier.
have dcnfs on my notchback and they were tricky to get set up but once they are dialed in sweet
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vwfye
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PostPosted: Tue Nov 22, 2011 11:35 am    Post subject: Reply with quote

The EMPIs are very similar. Let me know.
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PostPosted: Tue Nov 22, 2011 9:57 am    Post subject: Reply with quote

Working backwards ... Thanks fye, but they are EMPIs.

Mx, I am quite familiar with the Queen City ... Go Panthers; my mom lives in Pineville. I'd taking you up on your help, but driving there appears to be the issue.

CB's jetting chart suggests the Weber 34s are 52.5/130 out of the box. I was a bit surprised to be told mine were 55/127.5 out of the box.

My VW guy has the car so I am limited as to what more I can tell you. It will be next week before we start playing around with the new jets. I'll post an update for those who come along behind me.
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vwfye
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PostPosted: Mon Nov 21, 2011 5:41 pm    Post subject: Reply with quote

are these the 34s that CB sold for the bus that come with chokes? if so, there are a couple issues... the venturies are TOO small and the short linkage tends to have issues with binding if the plastic guide bits are cracked or missing.
contact me off list if these are the carbs and i'll tell you what i did to make them work well w/ the 'dreaded' 009.
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mxracer
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PostPosted: Mon Nov 21, 2011 5:29 pm    Post subject: Reply with quote

I'm down around Charlotte....

Well this sucks... I just boxed up all my spare stuff and put things on shelves and I can't find the damn jets. Evil or Very Mad I'll find them once I remember what the hell I did with them. Confused

I did however find the receipt. I ordered 55 and 60 idles so that tells me they came with 52 and I ordered 140 and 145 mains which tells me they came with 135. I originally thought rich but I think they were actually lean out of the box, which may coincide with you stumble on accel. Also thinking about it more I think I ended up with a 55 idle and a 140 main. My air correction jets were 1.60 out of the box.

This is a little interesting since the idle seems a step up from what usually comes with them and the main a step down.
RodneyW wrote:
Thanks for the suggestion. My idle out of the box was 55 and main was 127.5.


The 55 idle makes a little sense but the 127.5 mains seems a little on the lean side. I'd try bumping the mains up and see how it reacts. I'd also check and make sure the air jets are 1.60. Also when you say it does ok on hard accel, does it sputter at all when full throttle or is it smooth all the way after you get past that spot on accel?

The overall good news is that all the Weber 34ICT info you can get about jets on the web and here in the performance engine forum works for the EMPI's That's what I remember starting with when I did mine.

Also if you can get your hands on an A/F ratio meter it will tell you what the spot is on accel. I suspect it's a lean spot but that would tell you. You are more than welcome to come down here and use mine but it's a haul. Smile
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RodneyW
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PostPosted: Mon Nov 21, 2011 3:25 pm    Post subject: Reply with quote

I'd be obliged my friend, but don't get drenched on my account. Where in NC? Just want to know which of my family all across the state are whining right now.
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(1) No matter what the world brings, I am never anything but happy driving my Ghia.

(2) The Fastback is running, rolling and, especially important, stopping. Interior is done. Driving more often; commuting on occasion. Dreaming of paint.

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'71 Marina Blue Type 3 Fastback
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mxracer
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PostPosted: Mon Nov 21, 2011 3:18 pm    Post subject: Reply with quote

It's pissing down rain right now but if you want I'll go down to my shop after it quits and see what came in mine and I should be able to tell you what I ended up with.???
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RodneyW
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PostPosted: Mon Nov 21, 2011 2:35 pm    Post subject: Reply with quote

Thanks for the suggestion. My idle out of the box was 55 and main was 127.5.
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(2) The Fastback is running, rolling and, especially important, stopping. Interior is done. Driving more often; commuting on occasion. Dreaming of paint.

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'71 Marina Blue Type 3 Fastback
'03 Reflex Silver Passat Wagon (sold but still in the family)
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mxracer
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PostPosted: Mon Nov 21, 2011 1:18 pm    Post subject: Reply with quote

Just a tip on the jets... I found the cheapest place for jets was weberdirect.

http://www.webercarbsdirect.com/Weber_Service_Parts_s/45.htm

If you just want to buy weber (or empi) jets they seems to have the best price. If you want some support to go with the jets I'd suggest aircooled.net. John is mostly always here and happy to help.
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RodneyW
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PostPosted: Mon Nov 21, 2011 12:10 pm    Post subject: Reply with quote

I'll excerpt the first three paragraphs because it is so valuable. Learn. I wish I had.

After spending $500+ for a set of carburetors, some people are content to bolt them on, and seem "pleased" with the results. Others are upset by a backfiring, or smoke belching monster. In either case, spending the time to properly jet a set of dual (or single) carburetors is a very worthwhile task, since recieving a "perfect out-of-the-box" carburetors is one of the biggest myths in the VW industry!

For emissions and power, the engine has to have a certain amount of VAPORIZED fuel (liquid fuel doesn't burn) for a certain amount of air. The carburetor is designed to meter out a mixture of air and fuel in a form that can be burned quickly and completely by the engine. This is rarely done properly! For complete combustion, the air/fuel mixture must be supplied in a VAPOR, and not with liquid droplets (remember, liquid fuel won't burn). So, besides metering how much fuel the engine gets, the carburetor is also responsible to atomize the fuel and mix it with the air entering the engine.

In addition, proper jetting is different depending on the size engine, elevation, cam overlap, etc. I have even seen the SAME engine combination require different jetting (same carbs) on two different engines! So, for someone to say "this is what you need" is ridiculous. They can get you CLOSE, but not exact. To get exact you need to spend time and patience, and dial it in. It IS worth it too!

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(1) No matter what the world brings, I am never anything but happy driving my Ghia.

(2) The Fastback is running, rolling and, especially important, stopping. Interior is done. Driving more often; commuting on occasion. Dreaming of paint.

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'71 Marina Blue Type 3 Fastback
'03 Reflex Silver Passat Wagon (sold but still in the family)
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Mike Fisher
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PostPosted: Mon Nov 21, 2011 9:51 am    Post subject: Reply with quote

I assume everybody found John's Technical Articles on Webers! Cool

http://www.aircooled.net/gnrlsite/resource/articles/jetting.htm
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RodneyW
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PostPosted: Mon Nov 21, 2011 9:15 am    Post subject: Reply with quote

I won't call out the specific retailer. They have been helpful. They suggested a balance tube. I did go back and look closely at the instructions I received. No mention of a balance tube (the Weber instructions I now know are VERY clear about the balance tube being necessary). One minor irony ... they don't sell jets for the carbs they sold me in case re-jetting is necessary which I am not finding anyone who ran well with the original jets.

This website really caught my attention. The jets are quite cheap, you just need to anticipate needing them. I started this thread so that perhaps people looking at the same carbs will learn what faces them.

http://www.cbperformance.com/carbs.asp#carburetor

For sport, I did surf the internet for a few minutes and found all of these retailer descriptions of the EMPI 34 EPCs. No mentions a balance tube or re-jetting.

This kit is perfectly dialed in for a dual port 1500cc-1600cc VW Engines.

It is your responsibility to guarantee the cleanliness of your fuel system. This is the only reason you will ever have a problem with a new carburetor.

KITS Are a Dependable performance and economical dual carb. kit.

Dual 34mm carburetors are very popular and are an economical replacement when it comes to removing old fuel injection or trying to get some added horsepower to a mild motor.

If improving performance without sacrificing fuel economy is your desire then EMPI EPC 34 Dual Kits are the way to go.

Dual 34 EPC Empi Carb kit. Same kit as the Weber 34 ICT's. This set is for Dual Port. (Single Port and other kits available under carb kit catagory) These carbs come complete with manifolds, carbs, air cleaners, linkage, gaskets and hardware. These carbs also take all the same jets and parts as the weber ICT's. Get a kit before they are gone.

All Empi EPC 34 kits feature aluminum alloy hex bar with steel ball ends, Sealed aircraft heim rod ends, High flow aluminum intake manifolds, Thick high strength steel linkage mounts, Gauze high flow air cleaner assemblies, Coil relocation mount, Brass fuel tee, Detailed and illustrated instructions.

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(1) No matter what the world brings, I am never anything but happy driving my Ghia.

(2) The Fastback is running, rolling and, especially important, stopping. Interior is done. Driving more often; commuting on occasion. Dreaming of paint.

'71 Bahia Red Karmann Ghia Coupe
'71 Marina Blue Type 3 Fastback
'03 Reflex Silver Passat Wagon (sold but still in the family)
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Erik G
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PostPosted: Sun Nov 20, 2011 9:22 pm    Post subject: Reply with quote

for what it's worth, I too had the weber 34 ict's on my stock 1600 squareback. no problem out of the box, although the small hex bar linkage wasnt the greatest. On my notch, I had a set of 34 dells that just flat out kicked ass. better linkage, and to me just a great smooth carb. Dialed it in, even with my 009, and never had to mess with them really

Where did you buy the empi's? did they give you any advice?
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RodneyW
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PostPosted: Sun Nov 20, 2011 8:45 pm    Post subject: Reply with quote

Appreciate the responses. Thanks a ton Mike for the link to aircooled.net. I also looked at the jetting chart on CB Performance. This has been an enlightening experience. Setting up your carbs after you have them on really is an art involving trial and error. The balance tube is really something all retailers selling the EMPI should make clear. But even then, you could end up playing around with the jets on the Webers as well.

Much to be learned. Every day.
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(1) No matter what the world brings, I am never anything but happy driving my Ghia.

(2) The Fastback is running, rolling and, especially important, stopping. Interior is done. Driving more often; commuting on occasion. Dreaming of paint.

'71 Bahia Red Karmann Ghia Coupe
'71 Marina Blue Type 3 Fastback
'03 Reflex Silver Passat Wagon (sold but still in the family)
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Mike Fisher
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PostPosted: Sat Nov 19, 2011 11:23 am    Post subject: Reply with quote

It looks to me like www.aircooled.net is a good place for advice/parts for new/used 34's.
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Rome
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PostPosted: Sat Nov 19, 2011 11:13 am    Post subject: Reply with quote

Oh... i lost track- thanks for the clarification!
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PostPosted: Sat Nov 19, 2011 9:11 am    Post subject: Reply with quote

Rome wrote:
Bob, CB's 34 Solex kits are available only for the Type 1's "tall" manifolds, or the type 4's wide manifolds. For your Type 3, do you use the factory original "low" manifolds with the CB carbs? If so, do the factory manifolds need any modification, such as increasing the distance between the mounting holes on the carb flange?


We were actually talking about Weber 34 ICTs. However the Solex carb will fit onto the Weber 34 intake manifold (same bolt pattern), or you can put the Weber on the Solex manifold. Cool I hope this helps.
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Rome
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PostPosted: Sat Nov 19, 2011 8:36 am    Post subject: Reply with quote

Bob, CB's 34 Solex kits are available only for the Type 1's "tall" manifolds, or the type 4's wide manifolds. For your Type 3, do you use the factory original "low" manifolds with the CB carbs? If so, do the factory manifolds need any modification, such as increasing the distance between the mounting holes on the carb flange?
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PostPosted: Sat Nov 19, 2011 8:17 am    Post subject: Reply with quote

RodneyW wrote:
Appreciate the feedback. Here is where I found jets.

http://www.piercemanifolds.com/

I did talk to the folks where I bought them, and they said we should double check the timing. It needs to be 28 to 32 degrees before top dead center at 2500 RPM (or that was their strong recommendation).

Maybe someone searching posts about the EMPIs shoud see this as a BLACK BOX WARNING: if you buy it, you will be drilling the manifold for a balance tube and you will likely be buying new jets. Neither of those are particularly expensive ... unless you are paying someone else to do it. d'oh!


That's why I paid the extra 100 bucks for the CB version, as they are right, right out of the box. They also include all the parts (except a fuel pump) to install them. I also like their 4 page install booklet, that has a page just for tuning issues. Plus the carb linkage is just that much better. It's really a case of pay a little more now, or pay it later trying to get them right.
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64 T-34 Ghia...aka Wolfie, under construction... http://www.thesamba.com/vw/forum/viewtopic.php?t=412120
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RodneyW
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PostPosted: Fri Nov 18, 2011 9:53 pm    Post subject: Reply with quote

Appreciate the feedback. Here is where I found jets.

http://www.piercemanifolds.com/

I did talk to the folks where I bought them, and they said we should double check the timing. It needs to be 28 to 32 degrees before top dead center at 2500 RPM (or that was their strong recommendation).

Maybe someone searching posts about the EMPIs shoud see this as a BLACK BOX WARNING: if you buy it, you will be drilling the manifold for a balance tube and you will likely be buying new jets. Neither of those are particularly expensive ... unless you are paying someone else to do it. d'oh!
_________________
(1) No matter what the world brings, I am never anything but happy driving my Ghia.

(2) The Fastback is running, rolling and, especially important, stopping. Interior is done. Driving more often; commuting on occasion. Dreaming of paint.

'71 Bahia Red Karmann Ghia Coupe
'71 Marina Blue Type 3 Fastback
'03 Reflex Silver Passat Wagon (sold but still in the family)
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