Fuel cell interest?

[nando]

mine is a late model tank, but people with late model tanks have reported this issue too.

[Wh33lhop]

not exactly - the design of the fuel pump keeps the fuel on the pump side, and it should be pretty effective. but the issue of having to keep the tank more than half full isn't universal. I've gone down to 1/4 tank with no issues as have others. and yet some people seem to have this problem below 1/2 tank.

Are you referring to experiences with an early or late model tank? Has anyone with an early model done a late model tank retrofit?

[Wh33lhop]

What would be the weight saving of removing the stock tank?

Depends if it's full or empty :p

[CrazyB]

What would be the weight saving of removing the stock tank?

[nando]

it depends. in normal driving its not an issue but in hard g-force right hand turns on the track it becomes an issue below 1/2 tank.

yes, I know. I never had problems on the track (or autox for that matter, and I've gone down to the reserve light in that case). Just saying it's not neccesarily a design issue because not everyone seems to have the problem.

[p0cket penguins]

I just ran my track car at NHMS with less than a 1/2 tank.... I didnt notice any fuel starvation.... my lap time around the track is 1.26.30.... wasnt going slow

[JGood]

it depends. in normal driving its not an issue but in hard g-force right hand turns on the track it becomes an issue below 1/2 tank.

I can actually run my 87 325is down to fumes before it starts cutting out. The "bowl" around the pump does a pretty good job when the in-tank pump actually works. But my fuel pump dies every couple months so that's a problem all in itself, haha.

And I have registered 1.1+ g's on lateral movement, so if there was going to be a problem I would have seen it. Even on long sweepers, there isn't an issue. Oil pressure, on the other hand...

[kishg]

not exactly - the design of the fuel pump keeps the fuel on the pump side, and it should be pretty effective. but the issue of having to keep the tank more than half full isn't universal. I've gone down to 1/4 tank with no issues as have others. and yet some people seem to have this problem below 1/2 tank.

it depends. in normal driving its not an issue but in hard g-force right hand turns on the track it becomes an issue below 1/2 tank.

[nando]

I was bitching about the poor pickup design in my 87 (goes dry whenever I'm under a half tank and take an onramp) to my friend who doesn't have the same problem; he said later models had an integrated surge tank. There any truth to this?

not exactly - the design of the fuel pump keeps the fuel on the pump side, and it should be pretty effective. but the issue of having to keep the tank more than half full isn't universal. I've gone down to 1/4 tank with no issues as have others. and yet some people seem to have this problem below 1/2 tank.

[Massive Lee]

I was bitching about the poor pickup design in my 87 (goes dry whenever I'm under a half tank and take an onramp) to my friend who doesn't have the same problem; he said later models had an integrated surge tank. There any truth to this?

Later model has only one pump. None have any surge tanks.

[Wh33lhop]

There is a pot in the late model tank. It doesnt work for shit though.

It worked a hell of a lot better than in my '87.

[whowhatwhere]

I was bitching about the poor pickup design in my 87 (goes dry whenever I'm under a half tank and take an onramp) to my friend who doesn't have the same problem; he said later models had an integrated surge tank. There any truth to this?

There is a pot in the late model tank. It doesnt work for shit though.

[JTinFL]

JAZ stuff works pretty well, I am definitely making sure I have a surge tank in my new setup.

[Wh33lhop]

I wonder if it's possible to pack the stock tank with foam? Cut it open and reweld it...?

Or do something like this?

http://evomx.com/catalog/product_info.php?products_id=35&osCsid=n7isghqviu451q9rqphjt6qar5

Or this?

http://www.summitracing.com/search/B.../?autoview=SKU

Just stuff it down the fill tube. :p

[Wh33lhop]

e30s greatly benefit from a small surge tank to keep the pressure pump "wet"...

I was bitching about the poor pickup design in my 87 (goes dry whenever I'm under a half tank and take an onramp) to my friend who doesn't have the same problem; he said later models had an integrated surge tank. There any truth to this?