Does anyone know the size of the hose running from the fuel tank to the fuel pump on a 1981 308 GTSi or have an alternate part that can be used here? The hose is over a hundred dollars at Ferrari parts dealers and it just looks like I could get a low pressure SAE fuel hose from McMaster Carr for about 80 cents a foot to use as a replacement. Non of the parts diagrams/descriptions on Ferrari OEM parts give any descriptive info as to size etc. Thanks!
Don't even bother with the Ferrari hose, its rubbish. I bought the same thing for my 328 last year & it kinked the moment I put it on. I have a picture on my phone I think. I took the old hose down to my local place & got some very similar looking stuff for less than $10 (needless to say I took the Ferrari part back & got a refund) The Ferrari part number I had trouble with is 119281 I was told the dimensions of this are 400mm long , 15mm ID & 23mm OD. I bought Aeroquip 5/8 ID low pressure hose - Aeroquip 1525-10 All that said, it may not be the same part!
Contact DaveHelms here and just be done with it. You'll never replace it again. Very few if any of the "Super Mechs" here, use hose from ANY O T H E R source. And they certainly DON'T use OEM, Gates, etc. Especially when it comes to fuel.
Dave is THE last word for hoses. http://www.****************.com/ There isn't much on his web site except his contact info. I'd advise calling.
Does anybody understand why our cars have to have non-oem super expensive hoses and no one elses does? We're all using the same fuels. Why is it necessary to use different materials on our cars?
+1 Dave Helms, His team will ship same day just did this 30 minute task. While your tanks are drained and you are there anyway, you should change out your crossovers as well. Image Unavailable, Please Login Image Unavailable, Please Login
When I replaced mine I cut a small piece of the hose for sample cause I wanted to replace it with steel braided hose just to add a little protection since it's expose from underside of the car . According to my caliper it shows that the ID of the hose is 14mm which is about 9/16th Image Unavailable, Please Login Image Unavailable, Please Login
Because most cars don't have so much fuel related hosing in such close proximity to the engine's hot bits (headers/exhaust). When a hose goes bad on a front engined car, or other mid engined car with the tanks located elsewhere than in the engine compartment, it just leaks onto the ground and is quickly noticed. Not so in a lot of ferraris....
Not to mention that very few cars built since fuel injection even have rubber hose. This is a 2 year old Gates fuel hose on a 308. You can use that if you like. Image Unavailable, Please Login
Brian, You see a lot more of this than "the average bear". Has gas line rot gotten any better since the decline of MTBE? Rick
That picture was taken about 2 months ago. I have never had as much rapid hose deteration as I am having right now. Dave has been experiencing the same thing, that is why he is making hose. We both provided samples to Gates and they shrugged. It looks like the alcohol they replaced MTBE with is worse.
Wow! Thanks for the information and pictures. That sure explains it. It also proves the adage "One picture is worth a thousand words." It does make you wonder why, in a parking lot full of cars, why you don't see fuel puddles under half of them?
The Goodyear (IIRC) SAE J9 fuel injection hose is what you want, it has a blue teflon liner that is impervious to modern fuel. The Gates hose doesn't have this liner. Available at most local auto parts stores. Doug
The first batch of SAEJ9 hoses that I got from Dave Helms had the blue liner. The last small piece I got from him did not, even though it was labeled SAEJ9. It was a little alarming, but according to the Goodyear rep the latest J9 does not have the blue liner.
Great! Thanks guys... I was wondering if there was some reason those hoses cost so much and I just couldn't see it, I didn't want to risk it without knowing on a 'fuel' application though.
Mike, do you know what the rubber inside the stainless steel braid is rated? Is it comparable to the SAE J30 R9 hose?
Well, thats not the news I was hoping for... but thanks!! I used Earl's ProLite 350 so it lookes like the original stuff but with modern hose. The local fittings shop said they had much better results with ProLite 350 over Nitrile rubber... even though Earl's has a fuel disclaimer. They (Earl's) do say it's a synthetic rubber they just don't tell you if its Flourine based or Epichlorohydrin?? I only used about 4" of the stuff, the rest of my "tank to pump" is hard AN pieces so I'm not expecting much trouble... and it'll be real easy to swap out. Since I have some extra -8 (stainless braid) with a teflon core and the only piece of hose in my system is straight, it might be worth buying two new fittings and just make another connector piece and set my calendar to check condition of the original in 6 months to a year.... If there is any degredation of the rubber I'll just swap to teflon lined stainless and be done with it. Rick
+1, Dave does good stuff. I certainly like this solution. Had I known about it before going to AN, I might have just done it this way!!! After fighting around for a few pieces I bought the rest of my fuel/vent hoses from Dave. Good stuff, it fit, there was plenty of it in his kits. (Dave, I still need to let you know about that big vent line sizing... maybe today, I'm taking the afternoon to go to the shop and work). Rick
Hi Eric, I'm not sure if it is comparable to the SAE J30 R9 hose but the rubber under the braided hose is made of CPE (Chlorinated Polyethylene) I bought it from an High performance store who also uses them on their Sprint race car and their dragster race car. Will this do?
For more technical description about CPE: Chlorinated Polyethylene(CPE for rubber) Properties Chlorinated Polyethylene CM-240M is a kind of CPE for rubber. 40% chlorine content, good flame retardancy, oil resistance and high Mooney viscosity. Chlorinated Polyethylene CM-240M is used for oil resistant products, such as mining cable sheath and oil resistant hoses. Chlorinated Polyethylene CM-235MPT is a kind of CPE for rubber. Medium molecular weight, Mooney viscosity between 70 and 80, good mechanical property, good appearance and good processibility. Chlorinated Polyethylene CM-235MPT has fine surface and high extruding speed when used for wires, cables and hoses. Chlorinated Polyethylene CM-235HPT is a kind of CPE for rubber. Highest molecular weight, relatively narrow molecular weight distribution, highest Mooney viscosity and best physical performances. Chlorinated Polyethylene CM-235HPT is used for production of high performance rubber product.
-10 AN size braided hose has 9/16" ID. However these hose leak gas smelling which is quite normal, when you smell directly beside the hose. And I have applied it to mine at least now. But it is still told safe and I have never seen the trouble at racing situation. How is yours? When I used -10 AN plastic braided hose, whole hose has deformed by suction, although it worked enough. I guess even stainless braided one, inner rubber would be deformed. But as I mentioned above, I am still using this, because 14mm ID hose sold for Frerri is too expensive. For the fuel line, teflon inner is ideal. But I could not find the teflon inner stainless braided hose. Just info....
Most of the braided hose manufacturers make a coil inner spring you can add to any of their hose. This helps prevent low pressure collapse. http://www.amstreetrod.com/770410ASR.php4 Earls "Speed Flex" as the teflon liner. I'm not sure anyone would recommend a tight 180 degree bend with the stuff though. It does kink if over bent. Rick
I just can't imagine what happens to make a hose look like that. I have NAPA hose on my car for 10 years with no problems what so ever. I recently replaced the crossover hose that I had done with White Stripe hose at the reccomendation of the NAPA guy. Even it after 10 years looked fine inside and out.
