Yes master...

I'll dig into the tank and see which way the sock is pointing - looking at this pic - I can see the difference between the oem and aftermarket socks

 

Oh. Ok. Sock orientation matters. Learned something new. :|

Seriously, thank you.

 

Yep - pulled mine and mine was 180 the other way... and squished. BUT that's the only way the aftermarket pump would allow it to go without modifying the bottom retaining plate that supports the sock and pump - which means my pump was not designed for the miata. Time for a new pump I guess

 

i got my walboro form a dsm, and fits just like yours. no problems. I did however have a problem like yours about 2 years ago. i was thinking fuel starvation as well, but i could add fuel and it would still do it. while corner working a pca de/tt one day, i was describing the issue to an older guy that ran a shop in town. He suggested that i first try a new gas cap. He said he had cars in for repair that had bad gas caps and wouldn't keep the tank pressurised. my gas cap was the original on a '95 with almost 200k so i figured it was cheap and easy to try first. ordered one from mazda dealer, to make sure i got a good quality cap, can't remember how much it was but i think it was under $10. well, that took care of it because i haven't had a problem since. give it a shot.

 

That's a great fix. Thanks.

 

Yep, that's definitely it. Walbro makes a direct replacement for sure, and I think the DW300 also has the same dimensions/mounts on the bottom.

The internal sock and such are important enough that if I ever need a huge boatload of fuel, it will be an in-tank Walbro/DW300 feeding an external Bosch 044. I don't ever anticipate needing more fuel than what a DW300 can provide, though.

 

Seems MAperformance is the main dealer for the DW300 - time to carry stock Sav, or is there no profit in them? Anyway - the DW has applications for both models of the NA body which I thought was strange - in my limited knowledge base, is there a difference in fuel tanks between the two?

 

My experience agrees with Savington's statement. I had a fuel starvation issue that would pop up on the track in the corners when I was at about 1/3 a tank. Long story short the previous owner did a less than stellar job retrofitting a fuel pump. I replaced it with a Walbro with the proper pick up filter (the main difference) and viola, no fuel starving problems anymore, even when the fuel gauge reads empty.

 

While we're on the topic of fuel starvation, has anyone had a problem with the fuel level reading low when you're out on the track?

 

lulz. Mr. drift, your thread is ready.

Once we get our IQ3 and capacitive sender set up dialed on Crusher, I'll drop you a line.
We're using something like this with a bendable shaft. Scale it however you like in the IQ3. We tried a digital gauge with the stock sender and have struggled to get meaningful readings.

 

I had similar problem with fuel starvation trying to run a supra pump. Bastardized in place even with an OEM sock on it very close to the stock position in the tank.

What I have learned is the fuel sock needs to be exactly like OEM and exactly in the OEM orientation and position or possibly just 1/4" lower for glorious fuel pickup to occur.

Installed a Detchwerks pump with Walbro mounting hardware and all problems went away. I have put more than 10gallons in without a fuel starve issue.

Bob

 

We can get DW300s. Just haven't had time to get it onto the site. I'll be adding a bunch of stuff over the next couple of weeks.

 

That is exactly what happened to me (bastardized Supra pump, sock not exactly like the stock one). Amazing how much difference it made really.

 

Didn't Bonni Weatherwax do some work in this area several years ago?

I haven't heard from her in forever.