Hey guys, I had redone my whole engine bay a while ago and installed new gaskets, grommets, o-rings, hoses etc...including the fuel lines. I removed the emissions and rats nest and replaced the old fuel lines with new high pressure fuel injection line.

My question is that the lines are pretty much right on top of the block, I was wondering how hot they might get and if it's a safety concern. I wouldn't want to melt the lines and have gas going all over the place.

This is from a while ago but shows the positioning og the lines.




Should I insulate them with heat wrap or are they safe like this??

Sorry for the noobish question but I wanted to ask...

 

I think that physically the hoses would be fine- i.e., no worries about it melting- but heat shielding certainly wouldn't hurt the fuel temps.

 

i slipped black corrugated plastic tubing over mine. I check it after about 5k miles when I did my TB mod and the plastic was fine. If it wasn't hot enough to melt plastic tubing then I doubt it will get hot enough to cause a problem with your fuel line....but some type of heat reflective tubing could only make it safer.

 

That's good to hear. I figured the stock fuel lines did pretty good for almost 20 yrs so the new ones should be okay as well. It's just that without the rats nest these lines are pretty much right on top of the engine. I was planning on using some kind of heat shield wrap but got antsy and put everything back together before wrapping the lines. I'll add the wrap next time the UIM is off as well for added piece of mind.

 

Basically what your engine temps should never see...

200F constant
250F intermittent

http://www.goodyearep.com/ProductsDetail.aspx?id=5144
Here's Goodyear's specs on there 30R9 hose.


-Ted

 

(-29 to 275 °F) Intermittent use at 150 °C (302 °F) for the goodyear hose.

So as long as the hoses aren't near the turbo they'll be okay.

 

just put it on the list of things to check on an oil change.

the lines are really long, so chafing/rubbing thru is an issue more than melting.

 

Yeah, one more thing to check with every oil change, I usually check thew whole before and after each ride since it's been completely rebuilt. It seems to be holding together pretty well but I am still obsessed with checking nuts and bolts and belts and fluid levels.....

 

same here. if you're that worried about it, get stainless lines