Question for dark siders

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Mar 28, 2014 | 07:54 PM

#31

Drewski 2

Laughing Gas

Joined: Jan 2009

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From: Lavergne, Tn.

Quote:

Originally Posted by Pappys53

So I rebuilt the carb. Still not sure what model I have. It has a number on the front of the bowl of 80457-2 3171. On top of the bowl is R7809. I have been told the power valve has blown(I knew there was reason for my dislike of Holley carbs). I bought one at O'Reilly's which was a 3.5. Was not sure what was in it. When I pulled the fuel bowl off I found it has a 6.5. I did not keep the old one and did not think to look at it. My problem is since I don't know if I bought the right rebuild kit, I don't know which size is the right one.

This video explains power valve selection process.

Mar 28, 2014 | 08:12 PM

#32

Drewski 2

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Joined: Jan 2009

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From: Lavergne, Tn.

To identify your Holley carb you need to look at the numbers stamped into the air horn of the carb......not the float bowl.

In the case of this one ...... a 3310

Mar 28, 2014 | 08:56 PM

#33

Pappys53

Thread Starter

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Joined: Sep 2008

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From: Missouri

The 80457-2 3171 is on the front of the air horn, sorry I phrased it incorrectly the first time. The R 7809 is on the top of the carb along the edge.

Mar 29, 2014 | 09:03 PM

#34

smallello

Are we there yet?

Joined: Mar 2006

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From: NW Valley AZ

Have you checked the timing? Is it hard start after running a while. If the timing is too advanced it could have a hard time at idle.

Mar 29, 2014 | 09:15 PM

#35

ALBUQ F-1

Fleet Owner

Joined: Jul 2004

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From: NM

First of all, I can't believe OReillys had ANY PV's. A 3.5 is pretty low, IMO, usually they come out of the box with a 6.5, or even a 7.5. But as long as the PV isn't leaking by, it wouldn't affect starting.

Could your filter be totally plugged?

I have to say I'm reminded of the old saying, 90% of carb problems are ignition problems...

Mar 30, 2014 | 08:15 AM

#36

Pappys53

Thread Starter

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Joined: Sep 2008

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From: Missouri

I went back to OReillys and got the 6.5. Installed it and it seems to be running good now. I haven't reved it up too high or stuck my foot in it on test driving. When I reved it up after the rebuild, that is when it backed fired and took out the PV. As far as ignition, I put in new rotor and coil. I have an HEI distributor. I figured once I had the carb working I would put in new plugs and wires next. The only issue I have now is it seems the choke is either not kicking in or fast idle is not kicking in. It is probably just an adjustment, but I didn't mess with that when I had the carb apart so I figured it would have been still like it was before the rebuild. Thanks for all your help on this.