sleeples

This time I searched before posting,,, Will a walbro 255 fuel pump bolt into an NA car? Will I need any other parts and peices from the T2 gastank or whatever to make it right for a COSMO 13B engine swap?

Thanks

sleeples

One more thing? Is there a better pump than the walbro, the 100 dollar price on ebay would seem to make it worthwile....

Thanks,,

inflatablepets

The Walbro is a good pump. The price is reasonable. as far as needing other parts for the fuel tank, get a new sock. That should pretty much take care of things.

alwayssideways

the walbro comes with a new sock if i remember correctly. and i put a walbro in my na. it ran really really rich . its mostly over kill. but if you need a replacement pick up another na pump or a t2 pump /

RETed

He said he's doing a Cosmo 13B-RE swap.


-Ted

sleeples

why would the NA car run ritch with a more powerfull pump unless something else is broken?

Even in a t2 3 rotor or whatever, its still going to have to return the excess fuel say at idle.

There are about 10 people selling these on ebay for the same 99 dollars with free shipping, any recomendations?

Thanks,
Colin

NZConvertible

The question should be why wouldn't it? Unless you compensate with an adjustable FPR, a more powerful pump will result in increased fuel pressure. That's just how it works.

Andrew.

iTrader: (4)

They're 79 Shipped on the forum, i think injected performance sells them.

sleeples

There is a perfectly good stock fuel pressure regulator. Increasing the pressure on the pump side shouldn't increase the pressure past it. Check your factory service manual, the pump pressure is something like 35-70. I suppose the pump could increase the pressure so much that it would overcome the factory pressure regulator and bypass system, but I find that a little unlikley if all the stock components are functioning.

In any case I'm not going to install it untill I'm putting in the new engine.

NZConvertible

And you don't quite understand how it works.

But it does. The FPR is a very simple device, not much more than a fancy check valve. It can only change fuel pressure relative to manifold pressure. It cannot compensate for upstream pressure changes. More pressure in equals more pressure out.

The pump dead-head pressure (outlet blocked, zero flow) should be ~70psi. With the whole fuel system connected and atmospheric pressure acting on the FPR, you'll get 36-37psi. When manifold pressure drops, fuel pressure drops by the same amount. When manifold pressure increases, fuel pressure increases by the same amount. That's what the FPR does, it keeps a constant pressure differential across the injectors.

RETed

You're showing your ignorance on the matter.
Please do your research before posting such nonsense.


-Ted