Fuel pump question

According to this

there are different pumps for different years and engines (1.6, 1.8). Fascinatingly, they "Stock Mazda Miata Fuel Pump for the following model-years: 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999, 1998, 1997,

1996, 1995, 1994, 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986, 1985, 1984, 1983, 1982, 1981, 1980." Intriguing that they go as far back as 1980.

Your experience about not finding the fuel pump on the two sites you mention is peculiar, and I just experienced the same. I've ordered lots of stuff from

and they've always had what I wanted, and then lots more (very good job the shop isn't round the corner from me, that's all I can say); however, they don't have the fuel pump. I wonder why otherwise well-stocked places don't have it? Eric

The fuel pump cross ref is screwed up. Next-- The replacement pump cross reference is also a mess. The NA pumps have different specs than the NB pumps. A replacement pump is made by Walbro (and others) the problem is basically determining which one by part # to use. To add insult to injury, different sources of Walbro pumps use different numbers for the same pump.

On a replacement pump-- The pump "kit" is the same for the NA & NB. ( Filter bag and misc hardware) The pump is strapped to the pump bracket instead of screwed to it. A rubber sleeve is usually supplied to help reduce noise. It also allows the strap to work properly. The strap may be metal or even a plastic "wire tie" that works ok when exposed to fuel. The "pigtail" from the factory pump is spliced or modified) to fit the replacement pump. (The connector and terminals may be different on the replacement pump.) Some variation in length is allowed. The bottom of the replacement pump needs to have the same physical layout as the factory pump, in order to fit the support bracket.

I used a Walbro 190hp on my 99.

If you have a 99, you should consider replacing the bypass regulator attached to the fuel pump bracket with the newer version. (Tech bulletin)

A 190HP waterpump? That doesn't leave much power for the rear wheels.

Grant, It's a "fuel pump" that they are talking about, not a water pump !

Bruce Bing '03 LS

One can see why the US is known as the gas-guzzling nation of the world.

Leon

The "hp" stands for the high pressure version. It's doubtful that a normally asperated Miata needs this option. On the other hand, the option seems to help with turbo'd versions using the original 99 non return fuel system.

After all, ~108rhp stock vs ~220rhp boosted (rear wheel HP) means that a little more fuel is needed.

Still, that's darned big pump. ;)