Gotta make the Brumby go harder. Opinions ?

[subanator]

This is one of the common ways of doing the EJ conversion, the EA81 pump feeds the surge tank, a high pressure EFI pump goes between the surge tank and engine and the return lin from the engine comes back to the surge tank.

Apparently the EA81 pump has no problem with this setup.

Jordan.

There are two types of EA81 fuel pumps I believe. My early one thats mounted in the engine bay, I wouldnt think would be suitable because its fuel on demand that regulates by back pressure cut out. So if the surge tank is not closed (or regulated by eg a needle and seat as in a carby - original set up), it would run continuously (read noisey) it wouldnt be rated for continuous duty cycle.

The later model one thats '84 I think is located under near the tank might be suitable, or may suffer from the same prob. Someone else like Fred - Sub may be able to shed some light on that one.

[tim_81coupe]

I can't speak specifically for the EA81 pump, but I've been using a 'ticker' pump as a lift pump in my coupe for about 2 years now. I worried about the duty cycle when I first put it in, but to my amazement its never shown a sign of worry.

[MY_STI]

I have been using the under body subie pump to feed a surge tank, under the rear of the car, and used a supply line out of a another MY as the return from the engine to the surge tank. I restricted the return to the fuel tank a little, cos the pump was very loud when not 'loaded', its still not quiet though.

I thought that an MY with the strut mounted pump had no return line (mine didn't) and the under body pumps have a small return line.

Last weekend I towed a full bed car trailer with an MY tourer on it with a spare engine and varies extra bits in it, the trailer was unbraked and it was a little wet, you'd think i would have learnt from the last time I did it.

But the car pulled reasonably well, couldn't accelerate in 4th gear on the flat though, biggest prob was traction, many times i had to pull her in to 4wd to keep the front under control.

Setup is: EA81T to a 3.9 L box to 27" nankangs and the rear disks helped in the stopping department

However i don't want to make a habit out of towing that kind of load, and am going to try and borrow a 'cruiser to collect my next acquisition.