darktideryezing

I have a 1981 Trans Am that i'm trying to put a tuned port injection system in to. So far I haven't had too many issues, some small hurdles here and there. The main issue that I'm having is that I can't figure out the best way to fuel delivery system. I have heard too many downsides to just mounting an inline pump and calling it good (noise, longevity, price per pump). I have the return lines already setup but I've been told that if I get a sending unit that will work with my tank I'd still need baffles in the tank so that when I am low on fuel the pump will not get starved when I hit a corner. I was told I could try to make an open top box design and weld it to the sending unit to hold the fuel when I take a turn but I don't really like the idea. I've been trying to find a place to get a tank that might work for it but I haven't had much luck (other than rockvalleyauto but that's $1000 that I don't have). The TA is normally my daily summer driver (sits in the winter, I hate NH sometimes). I've only got a mild 355 in it right now. I'm really kind of stuck on this one, I've got plenty of time because it will take me a few weeks to chew through the junkyard wiring harness and get everything sorted out properly so I can connect it to the ECM plugs properly. I know this isn't a 3rd gen car but I was hoping to get some help with the 3rd gen setup thanks in advance

iansane

iTrader: (1)

A buddy of mine just finished a TPI 350 swap into his jeep cherokee. He used a bone stock carb tank and an aftermarket high pressure in line pump. He's been at some crazy angles and hasn't gotten fuel starvation yet.

darktideryezing

an inline pump may not get hurt by fuel starvation (esp if you have the outlet from the tank in a little sump) but if you just toss a in tank pump onto the sending unit (with a little modification of course) it could die faster due to not always having fuel to suck.
I'm not a fan of in line pumps due to
1) over heating problems (no fuel around it to cool it)
2) over heating problems due to the stress of pulling fuel from the tank and then sending it to the engine bay
3) "humming" from the pump as it is attached to the frame most likely and I've heard a lot of people had that problem
4) price (I haven't seem to find any less than $250 ish) and replacing something like that would suck after the 2nd or third time. I know an in tank pump is harder to change but generally cheaper and I have all the time in the world if I have to save a buck or 2 (gotta love bills)

*shrug* I may end up having to go with an in line pump in the end anyway. I haven't seem to come up with a better idea at this point thanks for the input though, I really appreciate it

iansane

iTrader: (1)

He payed around 90 bucks for the pump and it's ALOT quieter than my walbro intank 255. And there is a lot of air rushing around the pump itself depending on where you mount it, you could also put a few heatsinks on it.

Oh well, your choice.

darktideryezing

$90? where did he get that? I like the heatsink idea too, I could also find a few ways to water cool or use a fluid to cool it down, it would sure be alot easier than trying to work out all this other stuff.

If you could post the information on that pump that would help me out a great deal. Now all I need is a good schematic layout of the wiring harness (I got the wiring harness and the computer but no ECM plugs and no pin layout) and then i'll be able to just toss it all together and let'er rip. Thanks again for your help.