Ae86 fuel pump options

[Veiss]

jondee86

lol! Indeed

[tolisspi]

tolisspi Wrote:i want one for external application. Which do you think to be better? Lines/hoses metallic 12mm.

[eight-six]

The pump in the SW20 (GE/GTE) and mk4 supra will also fit.

However as said, if you dont need the fuel then dont waste your time.

[Gtsi-R]

and for a replacement pump of the 3sgte they use a.... Walbro 255lph

But for my application approx 160hm 4agze, the Walbro 255lph is to mutch ?? :S Great.. since I've got one on the shell....

[tolisspi]

I ordered the bosch 044 from ebay UK 153 euro (including postage). I need a big one because i run 272 10,3 cams and CR11,3:1.

[GTRJazz]

Gtsi-R Wrote:and for a replacement pump of the 3sgte they use a.... Walbro 255lph

But for my application approx 160hm 4agze, the Walbro 255lph is to mutch ?? :S Great.. since I've got one on the shell....

No its fine and will support 600bhp if you need it the fuel pressure reg will stop it flowing too much fuel

[tolisspi]

is it ok for me. ll have problems like that he wrote oldeskewltoy?

[oldeskewltoy]

not sure what problems you can have... but there are 2 crucial points in the fuel system you need to check...1) fpr - what is its flow rating? Will it flow enough fuel to allow the fuel system to properly maintain pressure
2) return fuel line - what is its flow rating? Will it flow enough fuel to allow the fuel system to properly maintain pressure. If either answer to these 2 questions is no.... you'll likely get poor fuel economy, poor idle characteristics, and poor off idle throttle response.


There are many options for fuel pumps besides stock(80 lph) or Walbro 255 (255 lph) Besides the GSS310 pump(rated at 115 lph), there are also 155 lph pumps, and 190 lph pumps. Do some research and fit the correct pump for YOUR needs!

[shorestyle]

oldeskewltoy Wrote:BE CAREFUL!!!!!!

The AE86 stock pump has a flow volume of approximately 80 lph. Swapping in a pump designed to flow 255 lph is NOT... I REPEAT... NOT a good idea! I have this information on the best source........ Walbro engineering!!!

A 255 in a corolla will at the very minimum cause excess fuel heating by over circulating the fuel! Other problems besides overheating that can occur... poor idle, poor off idle response, poor fuel economy. This is because the 255 pumps flow soooo much fuel, that the return line becomes an obstruction. This raises fuel pressure in the fuel rail, cause excess fuel to flow past the injector.

Now... if you are running 30psi of boost, then by all means get a 255 and replumb all the fuel lines... BUT for stock, or mildly built EFI cars you want a GSS310 Walbro fuel pump. This pump is used in the Integra B18C... it flows 115 lph at the exact same pressure as the stock AE86 pump. 115 lph is enough fuel in N/A form to support 230hp. In boosted form it can support 195-200 hp. Boosted apps require more fuel, that is why the same pump supports less boosted hp, then N/A hp.

You will still need the AE86 install kit, but try to ask your Walbro dealer for a GSS310 pump

what if you're running a silvertop 20v? (with stock injectors, 295cc) would 255 lph work in that case (walbro)? or would a 160 lph be more appropriate (tre)

[oldeskewltoy]

shorestyle Wrote:what if you're running a silvertop 20v? (with stock injectors, 295cc) would 255 lph work in that case (walbro)? or would a 160 lph be more appropriate (tre)

It'll work, it is just not the best choice.

4 - 295cc injectors will do fine on 160 lph pump