The Stovebolt Site Forums The Shop Area Engine Shop One carburetor 2 many

I must have deleted the post some how was one carb 2 many so little back story 52 Chevy truck with a 235 engine
So I had added Fenton headers and a Fenton duel carb intake manifold and had no luck due to not having matching carbs I know that one was a true 216 Rochester carburetor,
I put a stock 235 intake manifold with a 235 Rochester carburetor truck runs good and idles good I have not done any road test yet trucks not quite ready to leave the driveway yet after I turn off the truck and try to restart it won’t start unless I dump gas into the carburetor not to mention a charging issue has a new 12 v alternator but don’t remember the amps also noticed a sticker on the battery that’s date is from 2013 just thinking that might be some of the battery not charging.
Thanks

latroca 52 Low RPM on the stovebolts make it hard for the alternator to prime use as small a pully as is practical. I build my own 1-wire alt's some rotor and stator combos prime at a lower RPM than others, Hopefully you can get a set that will prime then charge at idle. I have one that is double belted for idleing a lot works good ! Kinda tight on fan clearance.

I have a double pulley on my already as well one belt for water pump and the other for the p/s .
Going to start with a new battery see what happens and I did tighten up the alternator belt I pulled it back about 2 inches new the p/s isn’t grumbling as much either.

If the small pulley doesn't have enough belt contact it will slip under load.
Increase the belt wrap (% of pulley covered by the belt) with an idler pulley.

I have a 54 235 with an alternator and it would not keep the battery charge because I had 273 gears and around town, the RPMs were not high enough to activate the alternator. I bought one through Jegs that kicks on as soon as you start the engine. I think it has to be over 1400.

Back on the carburetor hiccups took the Rochester off that wouldn’t start unless I dumped fuel in the carburetor,
But it had fuel in the bowel.
So the other Rochester I put on idle is not that great but will idle when I push the gas pedal to move the truck it pops a lot from the carburetor the more I push the gas pedal it smooths out a bit .
What should I look at he vacuum advance screw something inside the carburetor like the jet size, the accelerator pump,
It was pretty cool the truck just started right up after sitting a couple of week no choke just a couple pumps on the gas pedal.
Feel like I’m a little closer to get rid of my carburetor issues.

Advance the ignition timing a few degrees, raise the idle speed a bit, and go about 1/4 turn CCW (rich) on the idle mixture screw. A cold engine needs a little choking to start consistently, especially as the weather gets cold. If the engine will cold start without choking it's WAAAYYYY too rich.
Jerry

Thanks jerry will be doing all the above tips was almost 100 degrees where I’m at in so California today .

As far a rich if I change the jet would that be helpful? I think it’s a size 58 in it now

It's more likely to have a high float level, or maybe a power valve that's stuck open. It takes a lot of road miles and careful documentation of gas mileage to justify a jet change.
Jerry

So yesterday I got my truck running pretty good
Stock intake manifold Rochester b carburetor so I got brave and took it out in the street did a cool of passes last past at the end of the street truck just shut of no warning sign long story short a neighbors brother was passing by and helped me get the truck back in my driveway let truck sit a bit put some gas in the carburetor and it fired back up . Did I experience vapor lock? Have a spray can cap as gas cap for now and I don’t have the heat plate under ti intake with tube to header .
Should have left the 216 intake manifold and exhaust manifold on it was running great forgot engine has a new fuel pump new vacuum advance line new fuel line from pump to carburetor

Duplicate post

Going to do a compression test in the next couple of weeks and will be trying to figure out value of engine and transmission and head to the LS world.
1957 235 has new water pump new fan blade new radiator hoses top and bottom new thermostat upper housing start has been replaced with the stomp start Fenton headers have a complete electronic ignition system not installed could possibly go with engine also have a 3 on the tree BW transmission with overdrive

Going to guess:

(1) Dead condenser (especially if it is new)
(2) Clogged fuel filter
(3) Clogged sender in fuel tank

Hopefully, you find it.

Jon

Thanks to all who has given info and there expertise on these issues over and over going to put this thread to rest and stepping back and taking a break thinking I will put the truck on jack stands drain radiator and fuel tank cover it up and get back on it next summer so to all thank you I’m might pop in now and again to read some threads as time permits.
Thanks Robert