fuel system upgrade

[pneumo]

I am also doing a lot of reading and people are saying that on e85 they are using
12:1 - 12.5:1 AFRs (gasoline calibrated wideband)

Now since I am in albuquerque new mexico and my altitude it 5000+ feet do these numbers still apply to me on e85??

You should target the same A/F ratios regardless of your altitude. Don't mix up the fact that injector duty cycles should be leaner than when you're at sea level, which is how you compensate for the thinner air. In the end you should aim for the same AFR's.

 

[ramsack]

Since AN lines are spec'd by their inner diameter

no, AN is spec'd just like pipe and everything else based on OD. a -6 AN fitting is made to mate up to a 3/8" (OD) pipe that would be flared 37 degrees.

http://assist.daps.dla.mil/docimages/A/0000/0004/1956/000000077235_000000123996_LLLRQMYLYT.PDF

check that out, it's the military spec for AN fittings. in the table, A is the ID.

 

[Jafro]

no, AN is spec'd just like pipe and everything else based on OD. a -6 AN fitting is made to mate up to a 3/8" (OD) pipe that would be flared 37 degrees.

http://assist.daps.dla.mil/docimages/A/0000/0004/1956/000000077235_000000123996_LLLRQMYLYT.PDF

check that out, it's the military spec for AN fittings. in the table, A is the ID.

You've got me out of context. I'm not referencing pipe or fittings. I was referencing the hose. -6 line is a little over 1/2" thick on its OD. Hose is spec'd by ID... it's not 3/8" OD.

But that's a cool doc, and it's a nice contribution to the thread!

 

[ramsack]

correct, but -6 hose isn't 3/8" ID either. it's spec'd to try to match the ID of the AN fitting it will be used on. other hose that is non-an, like for instance acrylic hose for computer water cooling, is exactly spec'd on its ID.

i found that PDF so i could try to get 3/8" stainless tubing to put under the car and find out what wall thickness i would need to match the AN closest i could. i don't feel comfortable running hose under my car.

 

[Jafro]

correct, but -6 hose isn't 3/8" ID either. it's spec'd to try to match the ID of the AN fitting it will be used on. other hose that is non-an, like for instance acrylic hose for computer water cooling, is exactly spec'd on its ID.

i found that PDF so i could try to get 3/8" stainless tubing to put under the car and find out what wall thickness i would need to match the AN closest i could. i don't feel comfortable running hose under my car.

That's a legitimate concern, especially if you're lowered. I've had hose under mine for 5 years now without issues, but I don't do any off-roading and still have the stock suspension.

-6AN hose is ID .34375, OD .546875. 3/8" is .375. The idea is it stretches over a 3/8" fitting for a tight seal.

 

[ramsack]

it varies from maker to maker, but its ID never the OD pipe size. my car is on stock suspension, but i do plan on lowering. even so anything can like a branch or an animal or anything can happen and rip a hose. i'm more concerned about it getting caught on something, not so much it rupturing. and tubing is a lot cheaper than AN hose, and i want to run e-85 and don't want a lot of rubber.

 

[Jafro]

I understand you're very passionate about the size of your hose.

This is what I did...

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You'll see I used cushion clamps bolted into the frame rails, and zip-tied the hose to the factory lines between each clamp. The frame rail protrudes an inch below where the AN hose is, so solid objects capable of snagging or hitting the hose would first come in contact with that. Even so, unless you run over a steel object, nothing is going to cut a steel braided hose. You'll see that even a 4-post lift can't reach the line where it is on my car, and crush or damage it. This doesn't keep me up at night.

Good luck with your setup!

 

[ramsack]

as i said i'm not worried about the line being severed. more so of it getting pulled. and tubing is cheaper than stainless braided hose. i plan on replacing the fuel supply, return, and both brake lines completely with stainless and get some kind of cradle for all of them to bolt like the stock holders do. PA roads are horrible and harsh.