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Messages - Drew Pojedinec

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1
SAAC Forum Discussion Area / Re: fuel issue
« on: March 13, 2024, 02:08:50 PM »
Weird. I agree with Doug in regards to etoh.

The one thing I will make mention, the sticky white residue must be from something else.
My reason for thinking such:
I get carbs from all over the country. Certain areas seem prone to the residue that holds needles closed. Many areas (my own included) do not have that issue.

Etoh has become an easy thing to blame when folks don’t truly know what the real problem is.


As far as 50% of all PV being bad?
I have not encountered that at all, I would suggest making sure your tester isn’t the culprit. (Handheld vac pumps can often randomly bleed off)
I will say that probably more than 50% open at a different than rated point.

2
I’d like to have the carb rebuilt/restored
Apples and oranges Rebuilt = make it work. Restored = make it original. Vastly different costs with the same outcome.

Air Fuel Spark Prices
-4v Rebuild  $450
-4v Restoration $950

My personal favorite is to do halfway restored for survivors.
Just replate the hardware, and carefully clean the castings.
Drew, what do you think of this 735 carb? It runs great now for 2 years  and no adjustments from being built. Carb was test run after rebuild. I want your honest opinion on it. Thanks. Gary


If it runs great, you are happy with the looks, that is good enough for me.
If it is for a concours car, Bob makes some mentions that have merit.
Often “restorers” don’t actually do any of the plating or chromate work. As such it is often done very uniformly in one color. This is a large part of why I learned to do plating before I started taking on customer work.  Doing everything inhouse allows for me to nitpick my work.
Other than that, I prefer to not pick apart someone else’s work publicly.

3
I’d like to have the carb rebuilt/restored
Apples and oranges Rebuilt = make it work. Restored = make it original. Vastly different costs with the same outcome.

Air Fuel Spark Prices
-4v Rebuild  $450
-4v Restoration $950


My personal favorite is to do halfway restored for survivors.
Just replate the hardware, and carefully clean the castings.

4
I sent my to Holley and it came back very nice.Looks like new.

When I last spoke to the Holley guy who came to my shop, they told me they don’t do that work anymore. They were asking me if I’d do it.

My view is to use someone local if available. Nothing can beat being able to bring the car to a guy’s shop for a minor issue.
If no one is local I’m always happy to do the work.

5
1966 Shelby GT350/GT350H / Re: Holley 715 Install
« on: February 18, 2024, 10:31:39 AM »
Quote
If you have a stock unchanged 3259-1 it can idle with mix screws in due to massive idle feed. But it shouldn’t run well.
Drew, are you saying all 3259-1 with the primary metering block #4756 came with the larger IFR?

I have an unmodified 3259-1 (Nov 66) that will idle well but idle screws only 3/4 turns out. 

Will changing to smaller IFR make for a cleaner (leaner) idle?

Yeah so about this….
Idle itself isn’t a huge deal. As you mentioned, to a large extent you can control with mixture screws.
The issue is the transition to the mains.
Basically you cannot control low throttle fuel. Typically running fat isn’t a huge issue. But yes you can clean it up and tinker with it via idle restriction.

6
1966 Shelby GT350/GT350H / Re: Holley 715 Install
« on: February 18, 2024, 10:27:10 AM »
What about the float bowls?  Not sure if that has anything to do with your issue but the float bowls should be at a level where just a little bit of gas leaks out of the hole once the screw is removed and the car is nudged to rock side to side.
No sight holes on the 3259 carb bowls unless you make them yourself.

Yes, true, but aren't there screws that can be removed and the car body nudged to see if gasoline comes out of the holes to indicate the level is up or alternatively if it pours out then the level is too high?  That is what I have on on my Holley 650 double pumper.  Otherwise how are the float bowls checked for proper level?  Or maybe the 715 doesn't need it?  Curious.




Dethsled, lemans bowl fuel level is set dry. If you want to check it while running, there are ways.

7
1966 Shelby GT350/GT350H / Re: Holley 715 Install
« on: February 17, 2024, 06:11:10 PM »
A vacuum gauge hooked to any full time port can give you an idea of how the carb is seeing the engine.

8
1966 Shelby GT350/GT350H / Re: Holley 715 Install
« on: February 17, 2024, 03:00:47 PM »
I do have a stock / unchanged 3259-1.  With the screws all they way in, it was barley running and running very rough.  But it was not dying. There is not a ton of difference in how it runs with the screws in or 1.5 turns out.  RPMs are low and jumping around in park.   

An explanation of why is in order.

A typical generic carb has a very “normal” idle circuit. This is why they often run fantastically on a myriad of engines.
The two common performance carbs that show a difference with this are the Cobrajet and 3259-1.
The reasons for this:
The CJ carb is designed to idle on the transfer slot. Yes it does in fact have mixture screws, but enough t slot is showing that is provides enough fuel to idle on many engines even if the mix screws are closed. Yes it will run rough.

The 3259 from 1965 has a fairly small and reasonable idle feed at .033, this works great on most engines.
The 3259-1 has an idle feed of .040 which is massive. The carb is designed to provide sufficient idle fuel for radical camshafts like the Lemans Cam.
In modern days we would just use a four corner idle carb and reduce the idle feed jets considerably. In 1966+ this was not an option, so the only way to provide more fuel was with a drastic enlargement of the idle jet.
So what happens when you pit this carb on an engine making more than 12inches of vacuum?  It tends to idle very rich and the mixture screws are often weak with adjustments. You can often close them entirely and the engine will still idle (tho badly as noted).

Typically when rebuilding a 3259-1 I do ask the customer about cam specs as I can make changes easily.

FL saac:
I am not into pushing my business on the main forum. Visit my webpage afscarbs.com and all info you want is there. Feel free to contact me via the page. Thanks

9
1966 Shelby GT350/GT350H / Re: Holley 715 Install
« on: February 17, 2024, 10:43:08 AM »
If most carbs idle with mixture screws all the way in it points toward finding fuel elsewhere not a vac leak.

I always retorque everything after a few hot/cold cycles.

If you have a stock unchanged 3259-1 it can idle with mix screws in due to massive idle feed. But it shouldn’t run well.

10
Wanted to Buy / Re: 2 X 4 carb linkage parts needed here...
« on: February 15, 2024, 10:23:40 PM »
Once I get the ball rolling in a few weeks, I’ll likely have individual parts and pieces for sale too.

Just give me a little time, has been 3-4 years and a ton of money getting these into production.  The good part is it’s now mass production if needed. Currently 50 sets on hand and 150 more enroute.

11
Wanted to Buy / Re: Holley carbs
« on: February 01, 2024, 09:42:44 PM »
The $5999 ones are not sold. He lowered the price $2000.

Last set I sold restored was for $2750, they were kinda rough but 65 dated.

12
No need to reserve,
I’ve spent so much time and money getting these where they are juuust right, I’ll be spamming up the world to get some sold.

In march, I’ll get home and zinc plate them. I also test fit every part I sell, so that takes a little bit.
I’ll have them on my parts page and will likely post in the for sale area here.

Just working on Medium riser stuff now, will have LR and 3x2FE linkage done soon too.
Once done and all the data is in the cnc lathe/laser cutters, should be easy to keep inventory.
Drew

13
I just had 50 sets made. Have another 150 being assembled right now.
I need to get home and zinc plate them. They will be available in March.

14
As stated. Generic 600.
I have bought probably 150-200 of them in the last decade.
I generally pay $35-$55 for one with a universal lever, up to $75 with Ford throttle lever.

15
Wanted to Buy / Re: WANTED: FRONT BOWL FOR HOLLEY LIST 4174
« on: October 19, 2023, 06:08:26 PM »
I sent PRC to allstate to buy one.
As seems the norm for Ford carbs, if someone doesn’t send it to me, I end up trying to source the parts for the builders anyway….
Dunno when I’ll be back in the shop (kinda stranded offshore until we can hire more people)

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