evo 8 fuel line
Dec 28, 2018, 04:59 PM
#1
evo 8 fuel line
Hey guys, i have searched all around and i have an idea but not completely sure. Im trying to find out how wide is the evo 8 feed and return hoses under the hood. Im trying to convert everything to black nylon braided hose with an fittings but first i need to know the sizes. My friend gave me a fuel lab fpr with a bunch of -6 fittings and new injectors for christmas. As far as i understand, the oem hoses going to the rail is -6 feed and -4 return. Maybe theyre both -4 but people upgrade feed to -6? Some clarity on this would be awesome.
Also, what black braided nylon hose would be e85 compatible? I looked up -6 an black nylon braided flex hose and this seems to be what map and stm uses on their kits?
Also, what black braided nylon hose would be e85 compatible? I looked up -6 an black nylon braided flex hose and this seems to be what map and stm uses on their kits?
Dec 29, 2018, 07:09 AM
#5
Most common is -6 feed and -4 return. You will need the adapter fitting to convert the stock feed hard line to AN. Most people go hardline - -6AN to fuel rail- -6 from fuel rail to AFPR and return with -4 from the regulator back to the stock return hardline. I wasn't able to use a AN adapter on the return line I ended up using a AN hose clamp.
Most AN line will be rated for E85/ alcohol. I have found summit brand AN line and fittings to be the cheapest. Although I did damage one summit -12 hose fitting trying to assemble a hose. Vibrant/ Fragola also makes good stuff but it does cost a bit more. STM uses Vibrant hose & fittings FYI.
Most AN line will be rated for E85/ alcohol. I have found summit brand AN line and fittings to be the cheapest. Although I did damage one summit -12 hose fitting trying to assemble a hose. Vibrant/ Fragola also makes good stuff but it does cost a bit more. STM uses Vibrant hose & fittings FYI.
Dec 29, 2018, 09:07 AM
#6
There we go that’s what I wanted to know. I know I don’t need to upgrade unless I’m making big power but it’s a gift and why not I’ll just throw it on. My friend gave me a fuel lab fpr with a bunch of -6 fittings. So if I wanted to I can use the factory feed line to rail and other side of rail -6 line to fpr? Also, can’t I just hook up the stock return hose to bottom of fpr?
Dec 30, 2018, 06:46 AM
#7
Ya you could use the factory feed line to the rail - -6AN line from the rail to the FPR, and I bet you could also use the factory return line as well, like you mentioned.
** Your fuel lines should last a while but I would plan on upgrading them to something that is meant to handle E85 in the future. Especially the ones in the engine bay. Just my opinion though.
** Your fuel lines should last a while but I would plan on upgrading them to something that is meant to handle E85 in the future. Especially the ones in the engine bay. Just my opinion though.