i searched but got fed up after about 30 minutes, so ill ask directly

i need to know the propoer fuel line size that ill need to feed 1,600hp..im building a monster of a car and buying the engine from Nelson Racing Engines. its a 454TT small block based off a LSX block..im building a 3RD gen (dont worry about the chassis itll be taken care of) that needs the fuel line to take care of the power..i was thinking 3/4''. think that will be big enough?

 

If you need fuel line, I have -10 kevlar line that should be right about the size you need. goes for $43/ft. Line is brand new. http://store.summitracing.com/partde...5&autoview=sku

 

better get the biggest weldon pump you can find too.

 

im not sure if ill returna return line or not. so thats means ill need like 15 ft..
how does these lines hold up against stainless as far as strength and ditierroration (hmm)?..what about heat? id like to keep the fuel and cool as possible.

 

That engine package comes with an AEROMOTIVE pump.
Whats up with this weldon?

 

How does it hold up against stainless? It is kevlar, same material the bullet prrof vests are made of. I'd say it holds up to just about anything you can throw at it. It also weighs next to nothing. It is basically hose with a kevlar wrap around it.

 

Off the top of my head guess, I would say -12 (3/4") would work fine. You might be able to use a -10 but I'm not positive. Why not run a hard line? It's WAY cheaper and also hard lines handle abuse better and don't sweat. I'm not sure how the kevlar line works, but standard braided lines tend to sweat unless you have them teflon lined, which of course makes them WAY more expensive.

 

If you run a metal line, NHRA requires that you enclose it in a steel pipe, where it passes the bell housing.

 

would the kevlar lines pass tech?

 

The kevlar line is teflon lined. It does pass tech.

 

the teflon lined prevents it from sweating..what about in the event of the clutch exploding and ripping the bell hosing apart and sending fragments/schrapnel towards the fuel lines?>

 

How are the fuel lines routed on a 3rd gen? 4th gens obviously get around this because the lines are in the wheel well and never directly pass by the bellhousing. You might not have to even deal with the issue.

 

NHRA requires that the lines be "metallic, steel braided or NHRA accepted woven or woven-pushlock." Metallic lines in the area of the bellhousing have to be encased in a 1/8" wall thickness steel pipe. Ditto with lines that pass a supercharger belt. Lines can not be routed in the driveshaft tunnel. The NHRA rule book includes a list of accepted woven or woven-pushlock fuel lines.

Appears they feel the braided or woven lines provide more protection against shrapnel than a rigid metallic line.

 

There is an addendum to accept Kevlar braided line in the following sanctioning bodies...

Nascar, NHRA and IRHA and a few others. This was also confirmed by the my engine builder ex top fueler Jerry Clayton. There is no issue going through tech at all. I can understand the issue by the bell. I wouldn't run any line down the tunnel or by the bell no matter what the material.

 

IIRC when i did my carbed LT4 the feul lines run right by the bell housing and come into the engine bay between the bell housing and the drivers front subframe




im going to assume that kevlar is an "accepted woven or woven pushlock" line. If it meet NHRA requirements i guess its good for me.




i wouldnt route it that way either..with it being flexible i can pretty much run it were i want to.