Exposed electrical connections in a gas tank

[silverbulletAWD]

OK, I need a second opinion. I'm guessing this is the best forum to post this in...

Today I finally got around to rewiring my Fuel Pump. I ran 8ga wire directly to the pump and ended up doing away with the stock plug that normally clips on. I now have exposed connections in the tank. I'm figuring that as long as the spade plugs stay on the post there will be no arcing and I should be safe. Everything is fastened very well so the plugs aren't going anywere. On another note, if you look real close at the stock plug you can see that it's definantly not a sealed connection. So if Mitsu. could run exposed connections why couldn't I?

Can anyone tell me why I can or can't leave exposed connection in the gas tank?

Andy

 

[uh-oh]

i would personally seal it off...one of the safety bulletins for the litsus is regarding that connection...and when you mean str8 to the pump what do u mean???..you used a relay right???

 

[silverbulletAWD]

Yes, I used a relay. Straight to the pump means I deleted ALL of the original power wire by running the 8ga from the relay through the two plates and right up the the FP. I know that most people would call this overkill but right now my 680's are maxing out (99%) and I need every drop of fuel I can get so I'm doing this first and then maybe upping the base fuel pressure just to get me through the last month of my season. Right now I just dont feel like spending the $300 dollars to get the 780's I need as I just quit my job of 5 yrs.

What safety bullitin are you talking about? That sounds kinda freaky...

 

[uh-oh]

its on alldata's website...but thats how i have my relay setup too...how are you maxing out those?? whats your setup???

 

[silverbulletAWD]

Can you get me a link to that site? I'm not familiar with that name.

Believe it or not I'm only running a 50trim. There are some more details in my profile. But for the most part it's pretty normal. I'm seeing 99% duty cycles at around 6500 rpm on my logs but I'm trying to run 30psi on pump gas. I know that sounds really high but I'd like to assure you that I'm definately not just some idiot. I can run 26-28 psi with zero knock and I've even seen over 30 psi with none to speak of but the thing usualy wants to stumble right around 28 psi. I'm sure if I just put in some 780's I'd be golden. This sucks because I have an entire drive train set up for 9000 rpms and I'm shifting around 7000.

I've searched and found mixed opinions on the combination of 680's and a 50trim. Some say it's fine and most say not. And I think for the most part the average 50 trimer is only running like 20 psi. 680 Delphi's at 85% should handle about 430 hp. At 20 psi a 50trim won't flow that much air anyways. From the equations I've gathered it looks like I'm pretty close to getting the fuel I need that's why I'm doing the rewire first (I have NO idea why I didn't just do it a long time ago.) and then if I still need more I'll try bumping up the fuel pressure a bit.

I've been thinking about this whole submerged connection thing to and all I can think of is if the factory could do it and TONS of cars and trucks can use the same style pumps and plugs then mine should work fine. The only difference is I now have more connection exposed which should all be the same whether submerged in gas or surrounded by air. The main concern should be if that plug comes loose and comes off and the connection arcs. Mitsu. seemed to share my concern because they had three different methods combined into the same plug to keep things in place. I'm 100% sure mine will never come loose either. And it's not like there will be any corrosion going on in there either.

 

[silverbulletAWD]

Actually, don't worry about the link to Alldata I just found it. I didn't see any mention of a problem with that connector in there though.