PTFE hose inside diameter?
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From: Mechanicsburg, PA
PTFE hose inside diameter? Just got out my new -8 PTFE hose and it looked way small. Measured it and the hose is .500 OD and .410 ID. The fittings are .310 ID! WTF! Of course this stuff has been on the shelf for a year, so I can't return it. What have you guys experienced with this? Should I go Parker push lock? Running E85, so need something ethanol safe. And the local track has a tough tech guy, so it must be NHRA legal.
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I get all the fittings from the local Fluidline store , same place I buy the push lock hose . I'm only guessing that they are parker fittings and sorry I didn't measure the ID . Going to clean the shop today so maybe I can find and measure a couple spare pieces. Remember, a couple small restrictions at fittings while not great is not nearly as bad as a long length of small ID hose
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From: Mechanicsburg, PA
I get all the fittings from the local Fluidline store , same place I buy the push lock hose . I'm only guessing that they are parker fittings and sorry I didn't measure the ID . Going to clean the shop today so maybe I can find and measure a couple spare pieces. Remember, a couple small restrictions at fittings while not great is not nearly as bad as a long length of small ID hose
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-10 AN is larger than -8AN so the number posted for -10 is not correct based on the number posted for -8AN.
-10AN is same as 10/16 or 5/8
-8AN is same a 8/16 or 1/2
-6AN is same as 6/16 or 3/8
https://help.summitracing.com/app/an...-an-fitting%3F
But above is confusing because even though the hose in link below is advertised as -8AN (1/2 inch) it is actually only 7/16 ID (1/16 inch less than 1/2).
https://www.kartek.com/parts/fragola...-diameter.html
Last edited by dlandsvZ28; Nov 15, 2021 at 09:15 PM. Reason: edit content
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The number posted for the - 10 is the measured ID of the push lock fitting - not the hose. Everything i posted was as measured , not " what it's supposed to be " I think that's what bad apache was looking for. A little difficult to accurately measure the hose ID as it is easily ovaled while measuring so those numbers could be off by a few thou
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The number posted for the - 10 is the measured ID of the push lock fitting - not the hose. Everything i posted was as measured , not " what it's supposed to be " I think that's what bad apache was looking for. A little difficult to accurately measure the hose ID as it is easily ovaled while measuring so those numbers could be off by a few thou
Since OP is running E85 and since the fitting ID for -8AN is less than expected, should -10an be used instead for e85?
Ran into this issue several times when running cheap ebay china hose. (ptfe or not) Many times they rate it by OD and not ID and still call it -8, -10 etc. Its a shame the name brand hose is 5x the cost. Manufacturing can't be that much different.
Stay away from fragola. They state they are E85 compatible but that they weep fuel and crack within a year or so. Better off with ethanol compatible china hose IMO. This hose brand has worked well for me. I really like the push lock stuff. Never had an issue.
Stay away from fragola. They state they are E85 compatible but that they weep fuel and crack within a year or so. Better off with ethanol compatible china hose IMO. This hose brand has worked well for me. I really like the push lock stuff. Never had an issue.
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I think that's going to depend mostly on the power goal , don't think that's been stated. You have remember that there are other possible restrictions, like size of fitting ID at the rail / rails . Would calculate the cross sectional area of the fittings and determine where there would be restrictions. Length of line is a big factor in the friction loss through it, a 450 pump has a 3/8 OD outlet so I'm guessing a 5/16 ID ( someone has probably measured it ) plus a restrictive check valve but this doesn't mean you will get full flow 10 or 15 or more feet later with a 5/16 line . I'm sure there are formulas for this but I don't have them , others experience here is what I would reley on as to what will or won't work. Sorry for the ramble , just my opinion
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From: Mechanicsburg, PA
The problem is the PTFE hose I bought is sized one step less than normal, as stated by Forcefed. I researched and it is stated in the description they run one size smaller. Which is asinine at best. If you want to start your own sizing system, use a different number system. So it was my bad for not reading carefully. I think I'll go push lock and be done with it. BTW the outlet of my AEM 400's is tiny. Looks to be about 3/16 (.1875). And I mean on the pump, not the tiny check valve in the fitting.
As far as the fittings go on the AEM I'd def hog out at least one. If you are running staged pumps you'll have to leave one in place. They are pretty bad.
https://ls1tech.com/forums/forced-in...you-think.html
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Let me know how it works! The parker hose we used cracked and looked horrible about 1-1.5 years after installation. To be fair it was in a truck bed and exposed to direct sun light as well. i didn't ever leak. But wasn't a very quality hose IMO.
As far as the fittings go on the AEM I'd def hog out at least one. If you are running staged pumps you'll have to leave one in place. They are pretty bad.
https://ls1tech.com/forums/forced-in...you-think.html
As far as the fittings go on the AEM I'd def hog out at least one. If you are running staged pumps you'll have to leave one in place. They are pretty bad.
https://ls1tech.com/forums/forced-in...you-think.html
Well that sucks. I thought the Parker hose was good. I may just give it a shot and see. Maybe include a fire extinguisher in my next amazon order.
I had saw your post about the AEM check valves. The pumps are staged. And you can bet check valve will be hogged out. Thanks.
I'd second what Jimbo said, for fuel line, Earl's Ultrapro. Their threaded olives are also super easy to assemble. As for Fragola, it's good for oil or trans lines, but I wouldn't expect it to last very long with ethanol.
Well that sucks. I thought the Parker hose was good. I may just give it a shot and see. Maybe include a fire extinguisher in my next amazon order.
I had saw your post about the AEM check valves. The pumps are staged. And you can bet check valve will be hogged out. Thanks.
I had saw your post about the AEM check valves. The pumps are staged. And you can bet check valve will be hogged out. Thanks.
If they are staged the secondary pump needs the check valve in place. Other wise the primary pump will back feed through it when the secondary pump isn't on.
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From: Mechanicsburg, PA
Let me know how it works! The parker hose we used cracked and looked horrible about 1-1.5 years after installation. To be fair it was in a truck bed and exposed to direct sun light as well. i didn't ever leak. But wasn't a very quality hose IMO.
As far as the fittings go on the AEM I'd def hog out at least one. If you are running staged pumps you'll have to leave one in place. They are pretty bad.
https://ls1tech.com/forums/forced-in...you-think.html
As far as the fittings go on the AEM I'd def hog out at least one. If you are running staged pumps you'll have to leave one in place. They are pretty bad.
https://ls1tech.com/forums/forced-in...you-think.html