Zenith 32 NDIX leak problem and fine tuning

[Pydesign]

Hello everyone, I am finishing the preparation of a 36HP 1525cc, Okrasa cylinder head with valves 33 and 37.
I have a problem with one of my Zeniths. one of the bodies tends to have a leak, let me explain: one tube of emullion drips continuously, the other not at all. I thought about the float needle but I changed it and no change, especially since I should have the problem in both bodies and not just one. I have this problem not only when the engine is running and therefore the intake fills with gasoline and over time, the engine oil is loaded with gasoline. Do you have any idea where this could come from?

Another thing, I have explosions at high rpm, I think main jets are too small. My Zeniths are with 28 venturi, 130 for main jet and 220 for air.

Any advice is welcome.

[[email protected]]

Could be the float is to high or float needle ....

[Pydesign]

I don't think so, I tried to reduce the level by adding a washer but the level becomes too low and the carburetor no longer works at all. I also did tests and the needle closes well. The problem is only in one of the two bodies. It should be both if it was the level right?

[[email protected]]

Ok if you say you checked the float level and and needle and you say they are good ...and it's leaking on one side ...maybe the carb needs a good cleaning ....

[Pydesign]

yes maybe that's just it. there can't be any other explanation?

[Big_E_Deluxe]

Nice engine, looks familiar.....

My carb setup...

Carbs: Zenith 32 NDIX – Porsche 356 “Normal” Jetting
Main Jets: 120 (modified by Whitey Worsham)
Main Air Correction Jets: 230
Idle Jet: 50
Idle Air Correction Jets: 120
Pump Jets: 50
Venturi: 24mm

No clue as to why yours are "leaking". Possibly a good cleaning will solve. Tear down and inspect thoroughly. Good luck.
_________________
Erik

1958 VW Beetle - "Max": https://www.thesamba.com/vw/forum/viewtopic.php?t=...highlight=
1959 VW Bus - "Hans" - Double Door Panel (sold): https://www.thesamba.com/vw/forum/viewtopic.php?t=746927
2014 Porsche 991.1 Carrera S

[Pydesign]

yes yours was a huge inspiration. classy and so beautiful.

I have to move away from your settings with my much larger valves and the higher displacement. I will eventually find the problem. Apparently since my last tests it seems to be fine. I no longer have the leak.

[Pydesign]

Erik,
What modification did you on the main jet?


Carbs: Zenith 32 NDIX – Porsche 356 “Normal” Jetting
Main Jets: 120 (modified by Whitey Worsham)

[Big_E_Deluxe]

[Pydesign]

Thanks Erik,
Except that I received them, the idle jets of one of the two were broken inside and I wonder if that didn't damage the carburetor. This is what I need to check for my fuel leak.

Ok, another craftsman like we don't make anymore.

[oldbusboy]

Hi Guys,

Quick unrelated question about your Zenith 32NDIX carbs. I have a 1500cc WW Okrasa with the Solex 32PBIC carbs. What manifolds are you running and are the 32NDIX carbs a better option?

Thanks,
Trevor
_________________
1958 kombi
1968 porsche

[Big_E_Deluxe]

[Pydesign]

Indeed this is the only option.

[Two Glove Boxes]

"He" being Whitey Worsham. He has since passed away. Super guy, with a lot of knowledge on built 36hp engines.

He was a super knowledgeable and nice guy! He and Sham (RIP) were my go to on rebuilding my crashbox transmission. I asked every question I could and he always had the answer and took my calls.
True early car legends of the game that is missed.
_________________
1950 Deluxe Sedan Build

1951 Split Standard Hoffman Build

1960 Dove Blue Double Cab Patina Build

Two Glove Boxes IG