Getting frustrated with this 32/36 Weber... need replacement

[Turnswrenches]

I've been tuning carbs for 35+ years and I have never had so much trouble trying to make something run right.
Previously seemed OK... but didn't go on any extended drives or long enough to get things good and hot.

Yesterday I took it for about a 30min ride and it started giving me issues again.

Plenty of heat to manifold, proper SVDA distributor, points/timing are spot-on, etc... yet I still have a stumble at tip-in and when secondary opens.

"I am done"

It should not be this much bull$hit to make a stock bug run right.

Can someone recommend a proper carb / intake kit that will run right out of the box ?

I have a bone stock, fresh 1641 dual port.

I am not too concerned about performance...(ie: dual carbs) I just want it to start, idle and run smooth through all the gears with the most simplicity. Will go duals if they can be made to run right.

I have an old original 34pict-3 carb and unknown intake... but dont trust it.

I want brand new stuff that is 100% reliable and correct.

What do I need to buy to make this car run nice ?

I am getting tired of wrenching on this thing and getting nowhere. I have an obscene amount of time and money into this car and im starting to feel like it may soon be time to pull the plug on this project.
I could have built a perfect running 67 Camaro by now... and feel maybe that would have been a smarter project.

[anthracitedub]

I’d put a stock, clean intake and a German 34 with nice throttle shaft bushings on it... you can trust this set up.

[Turnswrenches]

I'm looking at these options:


Intake kit:
https://www2.cip1.com/ProductDetails.asp?ProductCode=VWC%2D113%2D129%2D701%2DM&CartID=1

Carb:
https://www2.cip1.com/ProductDetails.asp?ProductCode=C24%2D113%2D129%2D031%2DKC&CartID=2

Or this dual kit.

http://vwparts.aircooled.net/Dual-Weber-ICT-Carb-Kit-All-Engines-CB-p/cb-dual-ict.htm

[Glenn]

[Alstrup]

Stop stop stop.
You need to learn to interpret what the engine is tellin´ya.
If it is at tip in on the second barrel its the second barrel idle which is too small. Up it 0,5 and see how it responds.
Stock engine needs stock timing right? WRONG! Just about every time you change something, being it exhaust, carbs or something else, the timing is affected.
First thing to do is increase idle timing to 10 -11degrees. Just leave it there on a stock engine, then you can adjust the total timing later. Readjust idle etc. take it for a drive and see how it responds. The stumble is likely lessened but not gone, so up the second idle jet 0,5
A Camaro or just about any medium tune 350 is easy. You just pour some fuel in and if only 7 of 8 cylinders that catches on, who cares as long as it runs well at WOT.
Youre not running an old or a cheap blue Bosch coil by any chance are ya? If so, that wohnt help you either.

[Turnswrenches]

[Coyotemutt]

What's the AFR at tip in then? If it is where it should be, it shouldnt be stumbling. The stumble comes from either gas or spark being delivered improperly (as in bad spark timing/strength or incorrect AFR).

If a hot spark is igniting a ~13:1 ratio at the correct moment, the only possible outcome is smooth operation. Well, I suppose things like poor compression, leaky valves, or other mechanical problems could cause a stumble too. But on a healthy engine, it should be smooth if spark and fuel is correct.

[Coyotemutt]

Sorry for two posts, but a couple other little things.

If you haven't verified with a vacuum gauge that you're getting the right amount of vacuum to actuate the vacuum canister, you need to do so. VW used many different carbs and many different distributors and they were designed to work together. You have a carb that VW never used and an aftermarket reproduction distributor. The odds of them working together properly are slim.

The other thing is that you can cause a stumble with too much accelerator pump squirt. If your AFR dips to 10 or 11 when you press the throttle, you probably need less squirt.

Lastly, the phrase "I want brand new stuff that is 100% reliable and correct" does not apply to this hobby. It's actually one of the things I like about it. You can't buy your way into a working car. You have to make it happen with ingenuity and an eye for details. I don't mean that to come off as rude, just encouragement! As far as I'm concerned, the VW hobby requires more attention and is more rewarding.

[borninabus]

i don't see anything here that indicates "bone stock".
you would benefit immensely from some heated intake air.
_________________
88 Van WBX, A/T - 13 JSW TDI 6M/T - 2012 Touareg TDI Sport

[Erik G]

[Turnswrenches]

[[email protected]]

what is the jetting? The jetting which comes with the 32/36 is a joke out of the box.
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[Turnswrenches]

[Turnswrenches]

[Alstrup]

Ok. That sounds odd.
The cylinderhead temp thaty increases a lot under load (I assume we are not talking a 7% grade hill at 60 mph) indicates lean running, timing not retarded or heads that don´t get cooled well or an O2 sensor malfunction.
Have you tried running that hill with the vacum hose off to see if it makes a difference?

[[email protected]]

What plugs and plug gap?

Your jetting is rich if anything.

Another thing to check is the closed throttle position of the secondary throttle plate. It's set via a set screw at carb base (you have to remove carb to access it).
_________________
It's just advice, do whatever you want with it!

Please do NOT send me Private Messages through the Samba PM System (I will not see them). Send me an e-mail to john at aircooled dot net

"Like" our Facebook page at
http://www.facebook.com/vwpartsaircoolednet
and get a 5% off code for use on one order for VW Parts ON OUR PARTS STORE WEBSITE, vwparts.aircooled.net

[Turnswrenches]

[Turnswrenches]

[FreeBug]

I did something once, almost just out of curiosity. I timed the stumble. I then put in a slightly larger accelerator pump jet, and upped the pump until the injection took as long or longer than the hesitation. It worked.

I might be completely imagining this, I think I haven't looked at one of those things in a long time, but isn't there an enrichment from a passage opening up towards the main jet, controlled by manifold vacuum? It almost feels likeI dreamed it up... Ignore that last bit if it's completely crazy, it very well might be.

[Turnswrenches]