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Carb gasket thickness

Mopar2488

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How thick of carb spacer can i go between 68 MOPAR 383 factory intake manifold and factory carb 4401s with factory choke because carb got hot after long road trip and idle for 30 mins, then died when i hit gas pedal
 
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Depends on your air cleaner assembly height and what car it's in. I have this 1/2" sapcer plate on my Bee with stock intake and ramcharger hood and everything sits/fits fine.
beerestoration2017 428.JPG
 
I use the tallest one I can fit, but it gets hot here...usually a 1" but you can probably get by up there with a shorter one. Anything helps though. My current setup I can only fit a 1/4" phenolic and that's even with a 6-barrel scoop, but even that keeps the fuel from percolating in the bowls after shutdown. You will (most likely) need to re-tune the carburetor after installing.
Try putting a loosely-crushed ball of tin foil on top of your air cleaner, and close the hood....then measure the crushed thickness. That will tell you your available space..
 
The whole point is to use a non heat conductive spacer. If this is even the problem. I s this just a guess and a hope ?
A stock engine setup on a properly tuned and maintained car shouldn't need anything that the car didn't come with.
Any more to the story ?
 
Its in 68 charger and it has stock unsilenced air cleaner and stock carburetor is carter 4401s. Will this work Edelbrock heat insulator 9265 and when car sit idled for 30 mins get carb hot because fuel evaporating in bowl with todays fuel
71ZABOhFS2L._AC_SL1500_.jpg
 
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The key is

You mentioned factory intake and using factory choke - So in reality Air Cleaner height is not the issue , and you can’t use a carb spacer

I know for 1970 / 1971 the factory Carter AVS used around a 1/4"- 5/16" base gasket with the factory heated choke well for the Carter AVS

And those insulated Edelbrock base gaskets work awesome

1968 / 1969 factory base gasket thickness ? I don’t know
Your choke rod will depend on it
 
The key is

You mentioned factory intake and using factory choke - So in reality Air Cleaner height is not the issue , and you can’t use a carb spacer

I know for 1970 / 1971 the factory Carter AVS used around a 1/4"- 5/16" base gasket with the factory heated choke well for the Carter AVS

And those insulated Edelbrock base gaskets work awesome

1968 / 1969 factory base gasket thickness ? I don’t know

1968 / 1969 factory base gasket thickness is 1/16" thin paper gasket
 
Well you answered your own question

Are you still running the factory heated choke thermostat inside the intake manifold
 
Well you answered your own question

Are you still running the factory heated choke thermostat inside the intake manifold
I'm still running the factory heated choke thermostat inside the intake manifold after doing highway run and idling in driveway for 30 mins, fuel evaporate away in carb, when tap the pedal its dies, engine temp reads 190
 
I'm thinking I need heat insulator to prevent evaporation
 
So you mean I can't use heat insulator on this 68 383 intake because factory choke
upload_2021-10-9_21-42-4.png
 
Those Edelbrock heat insulator gaskets work awesome - I run one on my 71 BEE
They make an open and a divided version

But I don’t run any type of choke system

But like i mentioned earlier

Your adding about an 1/4" thickness to your base gasket , and that will change your choke rod geometry

It’s been a long long time since I played with a factory choke so hopefully someone else will chime in on the added height
 
Car running, idling and what not and not being shut off?... and it dies when you hit the gas. Not an evaporation problem.... and 190 is not hot.
 
Car running, idling and what not and not being shut off?... and it dies when you hit the gas. Not an evaporation problem.... and 190 is not hot.
Car was sit outside 28 degree Celsius, do you guys thinking I having vapor lock and everything tuned correctly last time spark plug looks good...what you think?
 
Carb issue or fuel pump not supplying enough fuel at idle. How old is the pump? Do you have an aftermarket fuel pump push rod?
 
Carb issue or fuel pump not supplying enough fuel at idle. How old is the pump? Do you have an aftermarket fuel pump push rod?
Stock fuel pump push rod when engine got rebuild back in 1989 when my uncle got his restored and he was the original owner and fuel pump is 4 years old
 
Well you mentioned long road trip - So if it ran fine on that long road trip

If it dies again and won’t restart

Pull the air cleaner lid off and manually push the throttle / accelerator pump and check for a fuel shot
 
Also Carburetor been rebuild three ago, i can restart car no problem idling and this time put in drive gear to put car back into garage and lightly press throttle and its dies and start up again put in 1st gear and kept running that time
 
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