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Old 07-24-2019, 07:10 AM   #1
rbrewer
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Default Holley 4160 rebuild

I am rebuilding my 4160 reman carb ( It dried out during storage).
Problems I had leading to this, I can see gas running down the secondary's while it is idling. Also leaks behind the vacuum unit( for 2ndarys) and same location on the drivers side.
I see that the rebuild kit has a acc. pump diaphragm - the rubber is black, I'm reading that there is a green one - made to resist the ethanol affect.
Can someone let me know if there are any other parts I should replace in the kit that are made to work with the ethanol in gas?
Thanking you in advance.
bob b
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Old 07-24-2019, 08:24 AM   #2
BamaNomad

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Ethanol will corrode the metal parts and deteriorate the non-metal parts throughout your fuel system, especially if the car isn't driven daily. Try NOT to use ethanol fuel...

I'm suspecting that this government mandated 'ethanol' in fuel is just a means to kill all our older equipment and make us buy new... It certainly doesn't help anything else. My car even gets 10% less fuel mileage when running 10% ethanol...
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Old 07-24-2019, 09:27 AM   #3
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Suggest Viton needle & seats.

A good rebuild kit will have a new diaphragm for the vacuum secondary actuator.

NAPA sells a gallon can of carb cleaner it comes with a basket for small parts it is the best cleaner I have used the carbs will look like new after letting the parts soak for awhile. Cost was around 25.00 a few years ago.

Good luck
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Old 07-24-2019, 12:13 PM   #4
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buy a genuine Holley rebuild kit. they come with the ethanol resistant parts you need and work correctly. DO NOT GET A GENERIC AUTO PARTS STORE KIT, they are junk.
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Old 07-24-2019, 05:13 PM   #5
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Quote:
Originally Posted by hotrodg726 View Post
buy a genuine Holley rebuild kit. they come with the ethanol resistant parts you need and work correctly. DO NOT GET A GENERIC AUTO PARTS STORE KIT, they are junk.
Especially those with the Brass Bowl Stripping Nuts, I believe sold by Borg Warner.
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Old 07-24-2019, 05:23 PM   #6
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Quote:
Originally Posted by mr55/56 View Post
Especially those with the Brass Bowl Stripping Nuts, I believe sold by Borg Warner.
Thanks to all, I have a genuine holley kit.
Will keep you posted, working stiffs have no voice on things like fuel additives.
Thanks!!!
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Old 08-04-2019, 08:29 PM   #7
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Default update on carb overhaul

I was able to overhaul my carb, put it on the car and it starts and idle's well.
Best as I understand, the holley kits are set up for ethanol.
I did replace the diaphragm with a holley part , they say is ethanol compatible, it is green in color, you can see it in the photo.
Time will tell.
Thanks
bob b

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Old 08-04-2019, 09:08 PM   #8
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Is nonethanol or RV gas not available in your area ?
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Old 08-05-2019, 06:31 AM   #9
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Default low/ no ethanol available

Sorry to say, based on the on line map of stations offering it, it's too far to go.
Thanks
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