Chasing the record

[BadAssPerformance]

...stock honda fuel lines and a single 044 inline with a Walbro will handle 700whp with ease.

Joe, that's all you need, Honda fuel lines! Wait a minute... which Honda comes stock with 1/2" fuel lines?



On a serious note... I have my old 5 gallon cell and an old 1g that was in the NYer if you want to size fit I can get you dimensions. NHRA rules state a cell has to be on the other side of the fire wall so if it fits up front its legal.

[Joe_Van_Duno]

As always thanks for the input guys. I like the idea of loosing weight by taking out fuel tank and running with less fuel. Jt if you could bring those fuel cells to the january meet that would be great!!

Of course as i figure things out I'll post updates.

[Reaper1]

I know you are "chasing the record", but let's run some numbers real quick.

1 gallon of unleaded gasoline weight approximately 6#'s. The tank it right around 18 gallons full. That is 108#. Now, usually it is accepted that 100# = 0.100 seconds in the 1/4.

I'd bet that 99.99% of us don't have a full tank at the track. Figure 1/2 tank as a good estimate. That brings us down to 54#. That equates to 0.05 seconds, or thereabouts.

I understand that weight isn't over the front wheels, and I also understand that if you want to run separate fuel systems so you don't have to have race fuel in your tank while driving around it isn't optimal either.

The fact remains that in a minivan you are giving up more time due to aerodynamics than weight at the speeds you are trying to achieve.

I don't want to take anything away from Rob, as he's achieved basically what nobody else has with our cars, but you should not need 1/2" fuel line to meet your power goals. 3/8" should be more than enough. Even the stock 5/16" with the reductions taken out that are in the tank and near the rail should be able to make it. As Brent has pointed out, there are scores of people out there that have made as much or more power with a single 255 in-tank and an 044 inline.

Something to consider is making sure you have minimal voltage loss to the pumps. Our cars are pretty crap when it comes to this. Doing a "hot wire" set-up will probably yield more capacity out of the 255 that wasn't able to be tapped before. I've never done the bypass mod, but it's been praised over many times over by many different people with many different types of cars and set-ups.

I'm not trying to tell you what to do, just trying to put out some information that may be helpful.

[Ondonti]

And that was done with tiny stock lines. I now have a fairly excessive fuel system on my Duster because I did learn that crazy high fuel pressures kill fuel flow through the in tank pump. The harder you push it, the less it flows. Run it on the limit and on a long pull it will decrease in flow and break things. I could probably have saved a junkyard motor by simply defeating the bypass on the pump or having an inline pump to deal with high pressures. If I ran low fuel pressures I would have been fine.

I would prefer to make reasonable upgrades then overspend and overcustomize. The money would be better spent on better transmission parts for a heavy van then having triple the fuel flow that you really need. If you have a reliable race car its a lot more fun. Red Sled, 8 second srt4 is so unreliable with its many highly custom parts that the owner seems to have a tough time staying motivated. Nothing really breaks but with so many members of the symphony needing to work together, its tough to get them all on the same page. So far that cars fastest pass is with a less complicated, less powerful setup.

If I could have gotten a wish granted for Christmas it would be a bulletproof drivetrain.

[Sgt Craig]

And that was done with tiny stock lines. I now have a fairly excessive fuel system on my Duster because I did learn that crazy high fuel pressures kill fuel flow through the in tank pump. The harder you push it, the less it flows. Run it on the limit and on a long pull it will decrease in flow and break things. I could probably have saved a junkyard motor by simply defeating the bypass on the pump or having an inline pump to deal with high pressures. If I ran low fuel pressures I would have been fine.

I would prefer to make reasonable upgrades then overspend and overcustomize. The money would be better spent on better transmission parts for a heavy van then having triple the fuel flow that you really need. If you have a reliable race car its a lot more fun. Red Sled, 8 second srt4 is so unreliable with its many highly custom parts that the owner seems to have a tough time staying motivated. Nothing really breaks but with so many members of the symphony needing to work together, its tough to get them all on the same page. So far that cars fastest pass is with a less complicated, less powerful setup.

If I could have gotten a wish granted for Christmas it would be a bulletproof drivetrain.

i believe in one simple thing,The K.I.S.S principle,Keep It Simple Stupid.

[Vigo]

Put me in the camp that says doing a fuel cell is not the best use of your energy or money. The weight you save vs running a stock tank with ~5 gal in it is just not worth the time or money, in my opinion. I also don't think you need to overkill the fuel system. I like the inline external because it's easy and addresses 100% of your needs. On a van you have to lower the tank to get the fuel pump out so even defeating the internal bypass on the existing fuel pump isn't any easier than adding an inline. On my Lancer i ran a dedicated power feed to the inline off the alt charging post through a relay that turned on with the ASD circuit, which i got from the coil positive post. Not too hard.

The way i see it, any time and money you spend on something that doesnt make the van faster means you are that much time and money FARTHER away from making it faster. I really dont think adding a fuel cell will make it faster, and it will suck down a bunch of money that could be spent on making HP.

[BadAssPerformance]

IIR Joe said he was running a half tank to make sure the pump/pickup was submerged on launch?

And if I find the 1g cell he can have it...

Lightness is not a bad thing to add, helps part durability too.

I agree, frontal area still sucks after lowering it, need to drop more!

[turbovanman²]

The easy solution to me is just to get a high performance inline pump and run it with the in-tank walbro you have now. The walbro 255 can support a ton of power at low pressures, it just tapers off a lot when you're asking it to make 80+. Putting an external in line with it splits that pressure load between the pumps and the externals dont have an internal bypass valve that ruins their flow volume at high pressures. Part of why the internal walbro 255s have a hard time with high power turbo dodges is because a lot of people run high base pressure (55) and high boost and it ends up jacking the fuel pressure high enough that the walbro is actually internally bypassing some of its flow, on top of flowing less just because the pressure is higher.

I run an intank 255 and an inline 255, I have more fuel than I'll ever need.

[85boostbox]

I run an intank 255 and an inline 255, I have more fuel than I'll ever need.

I would say for a few years at least

[moparman76_69]

Did you plan on trying Drag Week this year?

[BadAssPerformance]

Some shakedown runs last night....

[A.J.]

Awesome job.

As for the weight, I've never weighted the car, but I haven't done anything drastic. I've taken out all the seats, carpet and insulation up to the front, and interior body panels up to the front. Besides that it's still all there, including racing with a full tank of gas!!!! If the tank goes below 3/4 it sometimes will miss due to lack of fuel at the pump, I'd rather be safe than go lean when spraying.

I just re-read this. Your baffle only has a 1/8" access hole to the rest of the tank and the return line suppling the baffle that the fuel pump sits in. That's why you're having problems under 3/4 of a tank. You need to cut or drill some more openings in your baffle. I just went through this on my van.

[Joe_Van_Duno]

Thanks AJ. I'll have to take a look next time the tanks down. Although I snagged an entire fuel cell system from a car I scapped. So I have a nice system, just sitting there waiting...

[2.216VTurbo]

Great vids, good job to the camera person Nice exhaust flame when you went full rich a millisecond after IC hose let go

Is 12.52 a new PB?

[BadAssPerformance]

Glad you liked it! I didnt think the footage was too good, but I guess it turned out OK.

12.52 might be a PB for motor/boost (no juice) pass...

[Ondonti]

Does your boost spike higher on spray?

[BadAssPerformance]

He does turn the boost down when on the gun and pretty sure boost comes up but forget how much