Hello,


I just got a 750 Holley To try out on ruster.

Having never messed with a holley carb other than stock 1bbl stuff..

I ham having a fuel drip-leak issue with the 3/8 Inverted flare fittings that go into the fuel bowl.

is there supposed to be a gasket in on both sides of Holley part # 26-26?

I have the large 7/8" gasket on both the front and rear bowls... But is there a gasket that goes in the flare fitting location as well?

If we look at holley part #26-26 from the summit racing site, it has both the large and a small gasket pictured... Is my lack of having these small gaskets causing my fuel drip??


I have never needed to use a gasket on any other flare fitting I have used before so this is kind of giving me a challenge to get the leaks sealed up.

Thanks,
Greg

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http://www.youtube.com/hyperpack

Greg, I have never used anything but the larger O ring type seal on the bowl side of the fitting.

I am interested to see how the bigger carb works too.

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Official Cookie and Mater Tormentor.

We shall see.

I know I will need to disable or modify the secondary accelerator pump shot.

The Primary accelerator pump shot might be a bit fat now... but It's hard to do any of that tuning if the dang thing leaks fuel on the headers.

Greg

_________________
http://www.youtube.com/hyperpack

Nope just the bowl gasket.. Sounds to me like a flaw of some kind in the line... I am not familiar with your build or carb, but a 750 is a pretty large carb...

Are you using just "stubs" and rubber hoses or the dual feed line? After time the feed lines do seem to "develop" leaks.

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MRO....

Cheap, Fast, Reliable.... Pick 2...

Yes 750 is a large carb, but this is an all-out WOT drag race engine in a light car.

I went from a 500 CFM carter AFB to a 750 CFM carter AFB and the car went 0.2 seconds faster.. Trying the holley HP 750 to see what it will do.

I am using the Fuel line kit, not the stubs and rubber hoses.. ordered 2 new part # 26-26's Maybve I over tightned the first time and caused a leak... also Tha carb was used so maybe there is other junk going on.


Here is some Info on this project.


Greg

_________________
http://www.youtube.com/hyperpack

Let's see? You have fuel leaks. And you need to start tuning it, and probably keep tuning it forever, and ever! Yep, you definitely bought a Holley!

Just teasing Greg! Hope you pick up a bit more. Soon you will be knocking on eleven's door!!! The company gets pretty exclusive there, especially N/A
Good Luck,

Rick

PS. Have a great wedding day Saturday!!

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2 Mopars come with Spark plug tubes. One is a world class, racing machine. The other is a 426 CI. boat anchor!

12.70 @ 104.6

I used pipe dope on my screw ins into the fuel bowl worked fine for me

Kev

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Got everything worked out on this..

THe Flares were not sealing correctly against the inside of the fitting.. Seems like a common problem..

I made my own flares on some 3/8" tube stock and left a little "cushion" in the flare so it would seal against the holley 26-26 Fitting.. The little cork gasket is for a holley ceramic fuel filter in the fuel bowls.. and You are never supposed to use pipe dope or teflon on flare threads - THe threads do not seal like in a pipe fitting.. THe flare does.

As I have never ever had any trouble with any of the 3/16" flares for brakes etc.. I was second guessing the 3/8" flares.. But I got it all figured out now.

Greg

_________________
http://www.youtube.com/hyperpack

Well, I use teflon tape on flare threads............


Not for sealing anything, it just easier to take things apart later if the pieces haven't rust welded together......

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Ah ok... wasnt doubting you or your cfm needs was mainly thinking out loud... it gets me in trouble ALOT. WOW!! a 45 page build thread... Looks like i have some reading to do...


Dang got to the first vid and 'bucket said media soesnt exist.. Page 8 or so...

_________________
MRO....

Cheap, Fast, Reliable.... Pick 2...