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  #1  
Old 07-19-2014, 07:06 PM
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Making My Own Biodiesel-Compatible Cigar Hose

I run B99 in my car and since I have either the option of replacing the cigar hose every couple of years (it's been over 4 years on what appears to be the original aged, hardened cigar hose using B99 with almost every tank, no leaks yet) or using a straight hose with risk of the hose being stressed from the fuel pulsations, I have considered making my own cigar hose.

I was thinking of using biodiesel-compatible hose (in my experience the factory hoses have lasted longer using biodiesel than the plastic-lined hose, though), then using a couple reducer barb fittings so I could go from a 5/16" hose to maybe 1/4" and then back to 5/16". Does this sound like it will do the same thing as a cigar hose?
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Old 07-20-2014, 11:44 AM
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I just read that brass isn't compatible with biodiesel, so using brass reducer fittings wouldn't be a good idea.
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Old 07-20-2014, 07:44 PM
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Quote:
Originally Posted by Squiggle Dog View Post
I run B99 in my car and since I have either the option of replacing the cigar hose every couple of years (it's been over 4 years on what appears to be the original aged, hardened cigar hose using B99 with almost every tank, no leaks yet) or using a straight hose with risk of the hose being stressed from the fuel pulsations, I have considered making my own cigar hose.

I was thinking of using biodiesel-compatible hose (in my experience the factory hoses have lasted longer using biodiesel than the plastic-lined hose, though), then using a couple reducer barb fittings so I could go from a 5/16" hose to maybe 1/4" and then back to 5/16". Does this sound like it will do the same thing as a cigar hose?
Correct me if I'm wrong, but isn't the middle of the cigar tube hose larger, rather than smaller, than the end portions?
That way, it acts like a damper, no?
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Old 07-20-2014, 10:40 PM
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cigar hose

I believe the cigar shape was a sound deadening design. I have done a lot of oil and I would suggest you get 3/8 Pex Line and use that. Heat up the end (I use a blow torch) and push as far down return steel hose as you can. Make sure to leave a little give so that it can shake. Then attach to the top of the filter fitting. Make sure you get a good seal and you are ready to go. If you can find 1/4 in Pex you can use it for most of the other fuel lines. Except the one that does not have barbs on it. The PEX will not stick to that one.
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Old 07-21-2014, 11:18 AM
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Yeah, I meant for it to go from 5/16" to a much larger size and then back to 5/16".

PEX sounds interesting. I'll have to research it.
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Old 07-21-2014, 11:24 AM
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I'm not sure you even need the cigar hose. I've been running plain old fuel line on mine for the past 50k miles with no known ill effects or issues.
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Old 07-21-2014, 11:44 AM
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A third option is to loop an extra foot or two of B99 rated line in place of the cigar hose. It's just there to dampen pulses from the IP.
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Old 07-22-2014, 01:03 PM
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I've noticed that the OM603 engine doesn't use a cigar hose, but rather a fairly long piece of hose. My OM621 used a 3/8" hose.
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  #9  
Old 07-22-2014, 02:14 PM
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Gates/NAPA 'Barricade' brand hose is biodiesel compatible. Good quality biodiesel will not react with brass.
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