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  #16  
Old 01-21-2007, 10:30 PM
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I don't believe that there will be the slightest negative effect from not having a cigar hose. It is made so that it will last a long time under the extra stress caused by the heavy pulse put out by the IP, but doesn't actually effect the IP unless it was really clogged or something. Regular hose will fail prematurely if used in its place, which is a minor inconveniance as long as you keep a screwdriver and a lenght of fuel line in the trunk. Although realizing you just dumped your full tank of diesel along a 20 mile stretch of road would make me wish I bought the cigar hose.

Must... resist. I will not comment on viton, factory hose compatibility with biodiesel or WVO, or Goodyear fuel line. Will... uh... not. Wow, I'm proud of myself.

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  #17  
Old 01-21-2007, 10:45 PM
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Quote:
Originally Posted by TheDon View Post
I dont understand what it is with the bio guys.. The factory stuff is just as good as viton... Plus I've read that the stuff goodyear puts in their rubber is basicly viton but in a different form.
This bio guy is giving every bit of factory stuff a chance. Haven't replaced one inch of stock hose yet with viton, except for the injector lines, but I regretted that because the viton didn't fit right and leaked liek crazy. Those injector return lines I think have to be the stock set. I have gone through 25 fuel filters and one tank screen because of the crap in the tank. So far, hoses are hanging in there (6k on homemade b100). And, btw, po replaced cigar hose with a piece of regular fuel hose and I don't think it makes a bit of difference in performance. But, then again, I've not run the car with a cigar hose.
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  #18  
Old 01-21-2007, 10:51 PM
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TW,

Please "splain" how the IP puts out an "extra heavy pulse". Isn't the output of the IP into the return lines just the overpressure valve opening?

P E H
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  #19  
Old 01-21-2007, 10:58 PM
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Quote:
Originally Posted by P.E.Haiges View Post
TW,

Please "splain" how the IP puts out an "extra heavy pulse". Isn't the output of the IP into the return lines just the overpressure valve opening?

P E H
I know this may be unsolicited (since I ain't TW), but I can say this: Put your hand around the "cigar hose" or where that cigar hose is supposed to be. You can definitely feel the "extra heavy" pulse, especially as compared to any other fuel line. I think what is debatable is whether it's necessary to dampen the pulse.
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  #20  
Old 01-22-2007, 05:59 AM
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There are several reasons for an IP to cause fuel pulsations....all involving the internal design of the IP and attached fuel lift pump......

most of the German Diesels that I have had experience with had some sort of pulsation dampener device.....

I think that the Germans were perhaps over engineering here a bit.....but over a long period of time a constant pulsation in any metallic fuel line will cause fatigue failures.....and hanger (attachment points) failure as well.....

I don't think it matters a great deal if you install some other type of hose.....just bear in mind that the Cigar hose is designed with these pulsations in mind.....if you were to hard pipe your fuel line, then you may begin to see fuel line failures......

SB
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  #21  
Old 01-22-2007, 07:13 AM
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Quote:
Originally Posted by retx View Post
Also, i my transmission is changing gears at 15/25/35. Could i be seeing a vacuum issue at the hiccup and transmission?

when I did my valve adjustment I had the same issue with my tranny shift points. turns out when I popped the bowden cable out of the arm i pulled the arm over the stop on the throttle linkage. this allowed the arm that held the bowden cable end to float rather then travel with the accelerator linkage effectively disabling the bowden cable function. if you can move that arm freely left to right then you did the same thing. just lift the arm over the stop toward the driver side so it rests on the driver side of the stop and the arm does not move freely without the accelerator linkage. if I were home i would take a picture for you.
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  #22  
Old 01-22-2007, 11:04 AM
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Just feel it while its running. Definately a hard pulse. I just figure that cigar hose is designed to last as long as the other hoses on the car, so you can replace them together. Over engineered and I like it. I wouldn't go without the cigar hose, unless I had extra fuel line and tools (which is easy, I have both) with me.
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  #23  
Old 01-22-2007, 11:55 AM
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I havn't had a cigar hose on my SD in almost two years, runs fine.
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  #24  
Old 01-22-2007, 01:38 PM
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Quote:
Originally Posted by Hatterasguy View Post
I havn't had a cigar hose on my SD in almost two years, runs fine.
thats the concensus i am seeing. now to fix the rest of it all.
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  #25  
Old 01-22-2007, 05:23 PM
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If you are ordering parts it might be worth throwing it in the order for $10 or whatever it costs. I wouldn't go crazy trying to change it.
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  #26  
Old 01-22-2007, 05:43 PM
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oh im not worried too much then, i need to deal with a dead battery now. sheesh. the battery is almost 6 years old if its stamped right. ill change out the cables as well since they are pretty old and corroded. that was a huge issue on another car before. it takes a jump and no problem til i shut it off. just my luck today.

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