HOLLY 3310-1

« **Reply #25 on:** February 04, 2013, 07:11:27 PM »

Quote from: muffbro on February 04, 2013, 09:02:01 AM

Ok first: I will track down a 30cc diaphram...thanks .

RE: powervalve: only one of the power valves that was in my carb has any kind of markings... the one labeled 6.5

the other has no marking on it.

The 6.5 has square openings...the unmarked one has smaller round openings.

I would use the old one but the rubber is looking deteriorated on it and I don't really want to put it back in without knowing what it is. Suggestions? Is there a baseline powervalve for my application?

( The engine is supposedly rated at 400-425 HP. At least thats what the original owner told me.) I dont know if that helps..

Ahh, got it.

According to my old Holley book the 3310-1 is the only version of the 3310 series to have two power valves. Originally the carb was equipped with a 10.5 primary (#125-105) and 8.5 secondary (#125-85).

Again, without knowing how much vacuum your engine is producing, it makes it difficult to choose what to use.

At this point, for your application I'd start with and 8.5 primary and 6.5 secondary and adjust as needed after testing.

« **Reply #26 on:** February 05, 2013, 06:27:07 AM »

6.5 on the left....
On the right ... The Mystery PV..

I'm learning.

I should have checked to see what the Hg was BEFORE I disassembled the carb....
......the 6.5 has a small shoulder, the mystery valve is flat where it seats.....I guess it wont make a difference since there will be gaskets on em both when assembled.... Maybe I need to look closer at the metering block.......

My amateur status as a carb rebuilder is painfully obvious.... Sheesh

Sent from da phone

« **Reply #27 on:** February 05, 2013, 04:56:32 PM »

Crew..... I ordered the power valves ...6.5/8.5 Oh and I have another 8 million questions.....

Ha

The directions say: ' adjust float parallel to the bowl floor' ..... Ok. Mine are...are they?...am I over thinking this and just should be happy they are level?

Sent from da phone

« **Reply #28 on:** February 05, 2013, 07:54:33 PM »

Quote from: muffbro on February 05, 2013, 04:56:32 PM

The directions say: ' adjust float parallel to the bowl floor' ..... Ok. Mine are...are they?...am I over thinking this and just should be happy they are level?

OK, yes they are parallel to the bowl floor side to side but you normally won't have a problem with that

What they are talking about is from front to back. If you adjust the needle and seat assembly the float will raise and lower in the bowl, what you want is for the bottom of the float (while inverted) to be level from front to back. A good way to check this is to use a drill bit as a feeler gauge (Approx 3/8-7/16 is about right).

« **Reply #29 on:** March 10, 2013, 02:03:50 PM »

Ok..... Back on the stick with the carb today. Prepped and painted with some oil/gas resistant.... high heat paint.

I have an old rock tumbler that I'd like to try on all the linkage components but I'm SkEErt to take them off......it works smoothly so I'm just going to leave it alone.....

It does look better than it was I believe
It's under cover , but I'd like to try and make it cleaner than it was.

Sent from da phone

« **Reply #30 on:** March 11, 2013, 07:16:55 PM »

Looks somewhat better methinks....

Now to reassemble.... I bought a new fuel log for it as well

« **Reply #31 on:** March 11, 2013, 08:15:11 PM »

A good way to determine what size power valve you need is take a vacuum reading at idle and divide that number x 2 (13#-2= 6.5) also a little tip is quick fuel,Holley and bg rebuild kits say that there non stick gaskets for the metering plates and bowls if you spray them with Pam cooking spray you can easily change the jets and power valves to dial it in perfect without messing up the gaskets

« **Reply #32 on:** March 11, 2013, 08:42:42 PM »

That's a good tip!

« **Reply #33 on:** March 12, 2013, 04:18:20 AM »

Quote from: wetnwild on March 11, 2013, 08:15:11 PM

A good way to determine what size power valve you need is take a vacuum reading at idle and divide that number x 2 (13#-2= 6.5) also a little tip is quick fuel,Holley and bg rebuild kits say that there non stick gaskets for the metering plates and bowls if you spray them with Pam cooking spray you can easily change the jets and power valves to dial it in perfect without messing up the gaskets

Sounds good .....I'll give that a shot.....
Thanks!

« **Reply #34 on:** March 12, 2013, 07:14:56 PM »

Log and pressure gauge from White Performance / Kingsport Tennessee.

It's supposed to be 70 degrees this weekend....maybe I'll be able to rewire the trailer too

crewchief22

Re: HOLLY 3310-1

muffbro

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muffbro

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crewchief22

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muffbro

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muffbro

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Horizonjet

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