I have a 89 GXL and i need to know how big the fuel pump is to see if i have enough fuel for a swap im going to be doing.

 

what's the swap?

 

im going to do a f20c swap (s2000) I do performance honda builds for a living so i can get most of the parts for free or cheap i have a free motorswap so i need to see if ill have enough fuel to run the motor n/a work out all the bugs and then ill upgrade to fuel cell and external pump for turbo.

 

No, stock NA pumps are limited to about 200 bhp. turbo pumps can do about 250 bhp, fd pump is about 300 bhp or a walbro 255 will handle about 400 bhp. The walbro is only about $100 new and can be sold later. I'd suggest a walbro and not have to deal with used components in unknown condition when trying to troubleshoot the swap.

 

does anyone know what the LPH are for the stock pump?

 

FSM gives a general minimum range of 78 litres per hour, realistically it is probably in the neighborhood of 120-140 litres/hr.

 

https://www.rx7club.com/2nd-generation-specific-1986-1992-17/best-upgraded-fuel-pump-972162/