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JSM

Those running clear Dorman filters to their SUs

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Can anyone tell me when if they are running the clear filter like the dorman, when the car is running is it completely full, 1/4, 1/2?

I know I have some junk in my tank but when the car is running mine is only 1/4, to 1/2 full. I know I've thought I've seen it completely full before but recently I've been having issues. Possibly my mechanical fuel pump is failing. I was going to switch to low pressure pump by the tank soon, but just wondering. 

IMG_0205.JPG

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So that is kinda what mine does then. Thanks

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 My clear filter was never full when the engine was running. Never had a problem with lack of fuel to the carbs and the fuel level didn't change with a new mech. fuel pump. Never have figured out the "Why".

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I've got one of those before the OE plastic one that mounts on the firewall.  I did it after cleaning and coating my tank so I could see if I had ant debris or "pink" gas from the Red-Kote.  It was always filling itself up when running, like it was always half full.  Then I finally figured out my floats were way off and after getting them at the 23mm mark that glass filter is always completely full now, while my car is idling.  It makes sense to me that if the bowls are full the glass filter should be too.  I don't have any filters before the carbs just 3 other ones. :D

One Fram G-2 coming out of the tank, then the glass filter before the original plastic one.  No screens on my banjo bolts either.  That glass filter is always spotless and a nice goldish color.  That's my story and I'm sticking to it, car runs better than ever. ;) 

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1 hour ago, siteunseen said:

I've got one of those before the OE plastic one that mounts on the firewall.  I did it after cleaning and coating my tank so I could see if I had ant debris or "pink" gas from the Red-Kote.  It was always filling itself up when running, like it was always half full.  Then I finally figured out my floats were way off and after getting them at the 23mm mark that glass filter is always completely full now, while my car is idling.  It makes sense to me that if the bowls are full the glass filter should be too.  I don't have any filters before the carbs just 3 other ones. :D

One Fram G-2 coming out of the tank, then the glass filter before the original plastic one.  No screens on my banjo bolts either.  That glass filter is always spotless and a nice goldish color.  That's my story and I'm sticking to it, car runs better than ever. ;) 

Thank you.  I'm going to swap to electric and use the G2 as well, then a second before the carbs. 

"Supposedly", my tank was cleaned before I bought the car back.  There has been a lot of junk filling up the filter.  Put a new one on yesterday and it is filling again.  I may have to pull the tank again.

Anyone know if a 73' tank is a the same as a 71?  I have a nice clean tank from my wrecked 73 I could use.

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 I believe the tanks are the same. The major change was when the compact spare was introduced.

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I think the major change came in '75 with the advent of F.I. There were different pickup points inside the tank to avoid fuel starvation.. External dimensions were the same until the use of the compact spare in'76. Just being nit picky.

Cheers, Mike

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2 hours ago, JSM said:

Thank you.  I'm going to swap to electric and use the G2 as well, then a second before the carbs. 

You may be on their list too but I got an email from Zcardepot.com that has a 240/260 low pressure pump set up on sale for under $30. Check it out if you haven't seen it. Looks like a good one to me.

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Get rid of that filter - they are junk. The filter assembly inside comes loose and blocks fuel flow. You won't suspect it because you'll see fuel in the filter . Take it off and see if it is coming apart inside

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Something else I forgot to mention earlier, when I rebuilt my carbs and cleaned the tank I worried about debris getting into them since I had left the banjo bolt screens off. I googled "push lawn mower fuel filters" and found some UFO looking very small ones with the highest micron number? I think it was. Put one on each short fuel line from the fuel rail to the individual carb. Ran those for a few tanks then removed them, too many potential leak spots and it looked like $^!# with all those hose clamps on my cleaned up fuel system.

Similar to this but mine were clear. 

FTVP8X2I7RGMLID.LARGE.jpg

Edited by siteunseen

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2 hours ago, madkaw said:

Get rid of that filter - they are junk. The filter assembly inside comes loose and blocks fuel flow. You won't suspect it because you'll see fuel in the filter . Take it off and see if it is coming apart inside

I thought the mr gasket were the junk ones and not the dorman? I had a mr gasket on before and it was collecting junk well. Didn't look like it was deteriorating. 

Nothing against you madkaw, but it seems everyone has an opinion on filters. Either fram is good or they suck.  I can't make heads or tails of everyone's opinions. I'm likely going to go back to the fram g2 as they have the 5/16" in/out and cheap. 

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3 hours ago, siteunseen said:

You may be on their list too but I got an email from Zcardepot.com that has a 240/260 low pressure pump set up on sale for under $30. Check it out if you haven't seen it. Looks like a good one to me.

Yeah this one? https://zcardepot.com/fuel/fuel-pump/electric-fuel-pump-carburetor.html?search=Fuel+pump

Looks like the Airtex:

https://www.amazon.com/Airtex-E8016S-Universal-Electric-Fuel/dp/B000C1LW0E/ref=sr_1_1?ie=UTF8&qid=1499569897&sr=8-1&keywords=Airtex+E8016S

 

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It's not about them deteriorating, it was about them not staying assembled inside. When the filter cartridge comes loose ( if it's the replacement type) , it blocks the outgoing fuel. Mine was even intermittent which was really frustrating . I would think Dorman is the same as Mr Gasket- but I could be way wrong. Or maybe I had the only one that came loose- but the fact that it can happen vs a throw away plastic one is why I say get rid of it. 

Just wanted to make sure you were aware of this possibility 

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I don't know what those clear filters are made of these days but only about 10 yrs ago it was just cheap pot metal under the chrome, I had one disintergrate on me, well not on me, on top of a Ford 302 V8. I had all the pockets of the Edelbrock intake manifold full of boiling gasoline, the engine was hot and I was sure the whole car was going to go up in flames any second. The pot metal threads just let go with no warning, I'll never use one again and every time I see one I have to give my little blurb. Pot metal is crap and doesn't belong on a gas filter, hope yours is made of something stronger.

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I've got three extra fuel pumps and I would send you one for shipping costs.

i have a RX7 pump and an extra and a Carter . I replaced pumps thinking that was the problem, but it was the freaking filter . Now I'm EFI , so ....

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Thanks guys. Appreciate the experiences. Yeah I'm heading down the EFI road. I'm just very slow getting there. 

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13 minutes ago, JSM said:

Thanks guys. Appreciate the experiences. Yeah I'm heading down the EFI road. I'm just very slow getting there. 

If you go EFI you'll have to spend more time on something not as relaxing, like (forgive me married people) but hanging wallpaper and painting and working in the yard, etc.  8^(

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10 minutes ago, siteunseen said:

If you go EFI you'll have to spend more time on something not as relaxing, like (forgive me married people) but hanging wallpaper and painting and working in the yard, etc.  8^(

EFI is simple also, just different. I'm talking plug and play, not tunning like madkaw is going through. Carbs are simple too don't get me wrong. I think SUs are one of the simplest ever honestly. 

I've already stolen the EFI from my 79 parts car that I got running very well. Just time.  That is my first step. Trying to make small steps.  I have bad tendency to lose focus.

I have gobs of turbo parts. Just been collecting for awhile. Been all over the place wanting this and that HP wise. Had 2 LS1 donor cars and sold those off. The first car was wrecked and auto then I wanted a 6 speed. Bought a nice trans-am 6 speed for cheap. I really understand why people go LS1. I couldn't bring myself to canibalize the car.  Then I needed money for a second house so I sold everything. Luckily I was able to buy back my Z I sold.  That is another weird story.

At this point I'm simply trying to use what I have. My 71 is not very original someone already swapped in an L28. So why not.

I'm shooting for a conservative 300HP now. Anything more things start breaking and I'm only going to run 225/50 out back. 

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I have an Airtex 8012s electric fuel pump and is pushing 4.5 psi. It advertises as 5.5 to 9 psi but really delivers 4.5 psi as shown.  Should i regulate it to 3.5 psi?

IMG-20170711-WA0055.jpg

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Yes. 4.5 is pushing it and may be over the limit. New needles and seats in the float bowls MAY be able to handle the extra pressure for a while but sooner or later you'll end up with excess fuel in the float bowl causing a rich mixture (sooty plugs) and possibly overflowing float bowls (engine compartment fire). Anywhere from 3 - 3 1/2 psi will work fine. 

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I was thinking if i should leave the dorman clear glass fuel filter or install a malpassi king fuel filter regulator as this one so i can dial down the fuel pressure to 4 psi. The problem is sourcing the filters in europe. What do you think?

malpassi-filter-king-fuel-pressure-regulator-85mm-clear-or-alloy--[2]-36-p.jpg

FREE-SHIPPING-King-Way-Electric-font-b-Fuel-b-font-font-b-Pump-b-font-Kit.jpg

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