01SS - Restored Project underway!

[ThreeHonks]

I would look into twin walbro gs340. I know it can be done cheap. you just install a bulkhead in the top of the sending unit if you want to run -an line the whole way... or you can use the stock fuel lines. you make a y coming off the pump right in the tank

[DETROITMUSCLE]

I would look into twin walbro gs340. I know it can be done cheap. you just install a bulkhead in the top of the sending unit if you want to run -an line the whole way... or you can use the stock fuel lines. you make a y coming off the pump right in the tank

problem is both pumps running constantly is going to generate a lot of heat and that won't be good for the fuel, not to mention most LS cars don't have a return setup from the factory. A hobbs switch (which is what Brent says he doesn't want to run) isn't cheap and neither is the proper wiring. I don't think you can run stock line with a twin in-tank setup.

[ThreeHonks]

problem is both pumps running constantly is going to generate a lot of heat and that won't be good for the fuel, not to mention most LS cars don't have a return setup from the factory. A hobbs switch (which is what Brent says he doesn't want to run) isn't cheap and neither is the proper wiring. I don't think you can run stock line with a twin in-tank setup.

you can run a stock line. i've seen it done. well by "cheap" what are you comparing it to? the cost of a single in tank? lol its a lot cheaper to do it yourself than order up one of those one off kits.

or he could run something like sean has with an a1000 from a bulkhead fitting on the tank. This is just an n/a car correct, it should require near as much fuel as seans turbo car

[DETROITMUSCLE]

my single in-tank racetronix kit was somewhere around $200, thats cheap if you ask me. Another walbro 255 like I have would be about another $100, again cheap. My question is why are dual in-tank setups like lonnies or nasty so damn expensive? They don't use stock lines, wiring is different but I just don't see why its 5X more than the supplies. I'd like to know why myself. Racetronix was no help whatsoever when I asked them about it, they shot my right to lonnies.

[ThreeHonks]

my single in-tank racetronix kit was somewhere around $200, thats cheap if you ask me. Another walbro 255 like I have would be about another $100, again cheap. My question is why are dual in-tank setups like lonnies or nasty so damn expensive? They don't use stock lines, wiring is different but I just don't see why its 5X more than the supplies. I'd like to know why myself. Racetronix was no help whatsoever when I asked them about it, they shot my right to lonnies.

Im not sure why they are outrageous. One guy over on tech, I think his name is mr_bond did a write up on it and it turned out really cheap, like $400 said and done. IIRC, you just run 2 hotwire kits or something of that nature

[DETROITMUSCLE]

I'll have to look him up, for now I think I'm going to just buy the new A340 pump which is under $200 and wire it in, with my current racetronix harness its a simple swap and they should support what I will need for now. I'm a cheap ass

[ThreeHonks]

in tank.jpg

this is a little more backyard engineered than i'd like to see, but you get the point. instead of running a bulkhead (like shown) you could run it right into the stock lines with a stock GM quick-disconnect fitting.


Jeff what are you doing that you need a new pump?! Camscam02 is running a racetronix single and hotwire on a 200+ and he told me he is experience zero pressure drop thus far

[DETROITMUSCLE]

[ATTACH=CONFIG]35185[/ATTACH]

this is a little more backyard engineered than i'd like to see, but you get the point. instead of running a bulkhead (like shown) you could run it right into the stock lines with a stock GM quick-disconnect fitting.


Jeff what are you doing that you need a new pump?! Camscam02 is running a racetronix single and hotwire on a 200+ and he told me he is experience zero pressure drop thus far

I'm not worried so much about my current setup, but I thought you were fond of camscam anyways just looking ahead, not something I'm going to do right away unless I had a friend that was looking to upgrade his stock pump then the cost would be minimal so why not.

[ThreeHonks]

here is another write up, again, not so clean, but you get the idea http://www.ls1tech.com/forums/fuelin...cs-schizz.html

this one uses the stock lines to the fuel rails

[OVRKILL]

you can run a stock line. i've seen it done. well by "cheap" what are you comparing it to? the cost of a single in tank? lol its a lot cheaper to do it yourself than order up one of those one off kits.

or he could run something like sean has with an a1000 from a bulkhead fitting on the tank. This is just an n/a car correct, it should require near as much fuel as seans turbo car

You're right Ryan, stock lines could be used. Unfortunately, I will require a little more fuel....even though its "just an n/a car"....its crazy, lol

Lonnies twin pump with fuel lines (supply, return), switch, plug-n-play harness, etc is $1600! Almost threw up....I'll find something. VSpeed is working on a few things too, we'll get it figured out.

[Superman09]

FWIW, I ran twin in-tank walbro's in my Trans Am and they were both on all the time and I never saw an issue or had a problem...... but then again I only drove that ***** like twice

[ThreeHonks]

You're right Ryan, stock lines could be used. Unfortunately, I will require a little more fuel....even though its "just an n/a car"....its crazy, lol

Doesnt matter how crazy it is, its still n/a and the bsfc (brake specific fuel consumption) is not as great as that of a forced induction car. FI cars use much more fuel even at the same power level. With that being said, it sure wont hurt to upgrade the lines

[DETROITMUSCLE]

his motor might make more on nuts than yours on the gun.

[ThreeHonks]

his motor might make more on nuts than yours on the gun.

Im not saying it will or wont. I sure would hope it makes tons more since it is a high dollar build, you are comparing an all out race motor to an stock headed/stock intake LT1 that is over 100 cubes less than his RHS. His intake manifold probably costs more than my entire engine...

...just saying an n/a motor will only use so much fuel. There is a huge difference from fueling a 700rwhp turbo car or a 700rwhp n/a car.

Here is a couple "just punch in it" calcs about BSFC. you can get the point after reading through it a bit. http://www.rceng.com/technical.aspx mess with the calc at the end and swap out your info and change the BSFC to .6 or .65 and see how much the injector demand goes up for a FI build

[OVRKILL]

Looks like things have warmed up slightly...leave you kids unattended for one minute!