MTFCA Forum

Evening Forum Chums….. Does anyone have a lead on who can rebuild a Holly Vaporizer Carb from my 27 Tudor for me?…..many thanks!

Here is a view of the vaporizor carb. Many suppliers have parts for these. I'm sure you can rebuild it. A common problem is the plate 6273 gets a crack in it. Many times the carb just needs taken apart, inspected,and cleaned.

Thanks Perry….. I couldn’t find much information about it and I was hoping there was a shop around that was familiar with the vaporizer to rebuild it but now I may take a stab at it

Edwin, if you look back on this subject, you will find the most common problem with the vaporizer is air leakage. Also consider a full flow valve from Scott Conger.

A very good carb re-builder is Old Carb Doctor in Nebo, North Carolina. He has done Holley H-1, H-4551, and two Scheduler Model D's for me. Find him online under Old Carb Doctor.

Check with Corey Walker in Texas - he's a knowledgeable fella.

Edwin,
I went through one of these just a couple of years ago. Not that bad to rebuild but here are a couple of tips. The one I worked had been repaired and would not run at all, so the guy asked me to look at it.
Make sure the plate is sealed on both sides, I purchased a new plate as they are always pretty rough, and then filed the surface of the manifold and the top of the bowl to make sure the plate seals.
Next make sure that the air damper swings freely, it helps build vacuum to draw the fuel.
Make sure the vaporizer air tube nut, its the small brass knurled nut is tight and seals.
And finally the nut for the bowl, where the drain screws in, it is the same nut as the Holly NH carburetor, with one major difference. The carburetor nut has holes drilled in the sides, and the vaporizer nut does not. During the first repair a carburetor nut had been installed that allowed fuel into the passage at the bottom of the vaporizer unmetered. As a result it was getting way too much fuel, once I figured out was the problem was I was able to get the correct nut from Chaffins and the problem was solved.
Finally, when I got the vaporizer back on the engine, I found it does take a bit more choking than a carburetor does, but once it is started it was easily adjustable and ran just fine.
With the two diagrams provided, you shouldn't have a problem, if you choose to do it yourself.
Good Luck,
Kevin

Flyingpiper59 wrote: ↑

Sun Sep 11, 2022 9:28 pm

Evening Forum Chums….. Does anyone have a lead on who can rebuild a Holly Vaporizer Carb from my 27 Tudor for me?…..many thanks!

Check this link lots of good stuff
https://www.mtfca.com/discus/messages/4 ... 16013.html

You would be much happier just changing it out with regular intake and exhaust, the NH is so worry free, I have played with many vaporizers with success but the other intake will out perform and less hassle and easy to replace, the throttle arm is already drilled on the steering column, all you have to do is drill or push the pin out and move the lever down. Just my thoughts on this subject!

Toss it and go to a high volume intake manifold and Holley NH.

Like to keep 'em as Henry made them but the vaporizer was juts too much trouble. I have a starter on my '27 but since none of my other cars have starters I use the crank on that one too. Needed tons of choke to start and even then a simple quarter pull was not enough. I switched to an NH and never looked back. I rebuilt three vaporizers thinking the issue was something that could be compensated for but they all acted the same way. Once started and warmed up the car would start easily on the crank and they ran fairly well but the NH delivers better performance in my estimation. Admittedly the car started fairly easily with the starter and full choke but, as I said, I want a car that will start easily cold on the crank and I don't think there are many vaporizer carbs out there that will do that.

I think the main reason people don't have good performance with vaporizers is that the ones they have aren't rebuilt good. Russ Potter is the guy for vaporizers, and as he says about the people that don't like them: "they haven't had one of mine." The other thing too is that there are a bunch of other things that can cause a T to not run optimally. If you send it to Russ and make sure everything else is good, then your car will run good.

That's an excellent thread link Frank!
The 6273 vaporizer plate on mine had a big smile rusted out of it when I took it apart . Kinda like the big smiley!
New plate, 6276 tube and 6277 heater coil. 6269 outlet pipe as I ruined the old one getting it out. That little screw.
Some filing, sealant and got lucky on Lucky the TT. 3 crank-pulls (2 were choked) when cold and it was running.
On an engine with a quicky valve job that hadn't ran in 35 years. Dare to be different: Fix the Vaporizer. Not Vicks, the Vapo-Rub.
Send it to Russ Potter if you don't wish to do it yourself.
Come back and let us know if you would.
Mart's drawings and the original pics we have were a blessing in figuring that thing out.