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"Proper" Fuel Filter Mounting on a '69 SB?

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Old May 11, 2018 | 10:25 AM
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Default "Proper" Fuel Filter Mounting on a '69 SB?

Hey Folks,
I'm looking to replace the fuel lines from pump to carb soon.
Got all the SS lines and a new AC filter and band bracket.
As seen in the photos, the PO rigged the in-line filter (got a Holley carb, so no filter in the carb), to attach to the AIR Pump bracket, or what's left of it.


I can continue this method, but would rather clean it up a bit more and delete that heavy-duty black cast bracket just to hold up the filter.
How do others mount the filter in this area?
Can it be suspended from the lines without a band bracket?
Or can it be attached with the band bracket directly to the front of the block or water pump bolt? Or is that too close to the heat?


The AIM and Service Manual don't do a good job of showing the detail of this area.

Thanks!
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Last edited by Bergerboy; May 11, 2018 at 11:36 AM.
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Old May 11, 2018 | 12:58 PM
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Wow, that does not look like a very safe setup. Here are a couple options that I have or had. I had a SS braided hose setup with vertical inline filter. Recently I changed it out to a bent tube setup using the Edelbrock hook up to the carb which has the filter horizontal. Both are probably OK but I heard that the hose material is not good for today's gasoline long term. Anyways here are my before and after pics. I have a thread here somewhere also.

Jim




Braided SS hose



Bent tube with regulator
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Old May 11, 2018 | 01:08 PM
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Check out this thread:

https://www.corvetteforum.com/forums...th-photos.html
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Old May 11, 2018 | 01:51 PM
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You have a Holley with dual inlets?

What I did on my BBC setup was order an LS6 fuel line. For you order an LT1 fuel line.

Then I ordered a new stock fuel line for the Q-Jet that come with the car.

I connected the Q-Jet line from the pump and added the filter. I then placed the Holley fuel line in place and measured when I needed to cut and flare the line to connect to the fuel filter. Came out great.



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Old May 11, 2018 | 02:11 PM
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Like the filter mounted vertically so if it leaked its spilling on the ground not a hot motor. Plus if a belt breaks the line cant get whipped

Theres nothing wrong with rubber hose, use the spring type clamps and it will never leak.
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Old May 11, 2018 | 02:15 PM
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I've got a Holley with a single intake.
Last year, I fit-up a JEG hard line with a banjo fitting to the carb, so I could get a full air cleaner base on. It has an inline filter (bronze "stone" cartridge).
Looks like most of your examples have the filter self-suspending from the lines.
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Old May 11, 2018 | 10:09 PM
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Bergerboy, here's what a '68 327-350 looks like...



Good luck... GUSTO
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Old May 11, 2018 | 10:44 PM
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Thanks Gusto.
What is your filter fastened to?
Looks like there's a band around it, but want to know what to attach it to instead of the partial AIR bracket on mine. Do you have a closer picture?
Thanks
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Old May 12, 2018 | 12:10 AM
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Originally Posted by Bergerboy
Thanks Gusto.
What is your filter fastened to?
Looks like there's a band around it, but want to know what to attach it to instead of the partial AIR bracket on mine. Do you have a closer picture?
Thanks
It isn't actually my car, but I believe it is either attached to the end of the head or to an intake manifold bolt. It should show in the AIM how it's fastened.

I don't have an AIM for a '68 or a '69, but someone here will no doubt offer up a picture of the page in the AIM or a picture of the mount in their car.

Good luck... GUSTO
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Old May 12, 2018 | 10:03 AM
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Yeah.
The AIM for 69 shows the filter clamp bolted using the AIR Pump bolt and bracket.
My car has no AIR pump so the filter is attached today to what remains of that bracket after someone modified it.
I don't see an AIR pump in the 68 picture you attached either.
In fact, I rarely see AIR pumps on these early C3s anymore.
Were they really standard content for SBs in 68/69? And people just removed them automatically?
I have headers now, so there'd be nowhere to hook up the 02 lines to like with the stock manifolds.
I mainly would just like to remove the AIR bracket and attach the filter right to the block [or not at all].
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Old May 12, 2018 | 10:40 AM
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The factory filter for your car was attached to the smog pump brackets.

I custom make up brackets like what your car has but I make sure that the strap that holds the filter is good and snug and fits the filter correctly.

The fuel filter in your photo seems to be incorrect. There should ONLY be ONE hose clamp on it...and that would be for the return line only. The hard line coming form the pump INTO the bottom of the fuel filter should be a flare fitting and NOT a hose clamp. The same holds true for the TOP fuel line that would go to your carb. It also should be a flare fitting.

Knowing that you have a Holley instead of the QuadraJet carb...this is where you having to install the fuel line to the Holley to get the base of your air cleaner to work....but...in my opinion...you now have to run a rubber hose from it to your factory fuel filter....which for me is NOT acceptable and can cause for a fuel leak and or fire.

I will say this:

IF you car were in my shop. I would take off the new line you got from Jegs. I would buy a JIC banjo fitting that I could attach to the blow of the carb.
I then would make a hard line and bend it so it attached to the JIC banjo fitting I attached to the carb...and then put a double flare on the other end so I could attach it to the fuel filter.

I recently in the past had to do this same exact thing on a Corvette. And the JIC fitting I got did not want to work due to being too wide and I did not get the bolt for it when I ordered it and ASSUMED that it was the same. So I had custom make my own by silver soldering a JIC end onto a modified factory Holley banjo fitting. So..if you get the JIC fitting...get the bolt for it also.

Granted..I do have all the needed flaring tools and tubing benders. So...it is up to you one how serious you want to take this repair...if any. because it is serious enough for me because it is dealing with fuel. And in y opinion. The least amount of connections in the line from the pump to the carb is best. And if you do have to have connections...they should be a very solid trust worthy fitting design and not hose clamps.

OR...like I do on many cars that do not care about judging. I remove factory fuel filter set-up entirely and install a fuel pump and 'S' hoses for a 1970 and make my own hard line from the pump to the carb. And..if needed...I install fuel filter in line and it is also hard lined...and I do not use rubber hoses with hose clamps due to this being the PREESSUE side of the fuel system and I can not afford to have fuel spray get anywhere and start a fire.

'Google' Corvette engine fires and you will see that a vast majority of these fires are on the right side..and oddly enough up by the fuel inlet area.

DUB
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Old May 12, 2018 | 07:13 PM
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I used the original A/C style filter, hardline from the pump up to it , the AN6 lines to the regulator and carb
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Old May 13, 2018 | 09:13 AM
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That repro vertical filter with the return line is pricey. I think that when I replaced the stock fuel pump I had an option of replacing what I had or getting a newer model year pump that had a vapor return line on it. Hindsight being clear I would have gone that way and eliminated that original filter and stayed with the cheap inline one. $4 vs $50.

But I didn't. The vertical old one looks cool. Mine had been flopping loose so I just twisted a piece of aluminum I had laying around, drilled a couple of holes, threw it on the buffing wheel and bolted it to a spare hole in my intake. From the looks of it you have the same unused threaded hole in front of the thermostat housing. Doesn't move, cheap, looks decent enough to not be noticed. I'm not a restorer so I don't care if it's original or not.

Not the best pic but you get the idea


FWIW - when I got the car it had that original vertical filter and it also had an inline filter down on the frame rail. I actually continued using two of them - I replace the cheapie every year and leave the expensive vertical one alone.
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