Walbro 450 Installation - the only fuel pump you need

[larsaskogstad]

"Due to the higher amperage draw of this pump, a hotwire kit should be used. An aftermarket Fuel Pressure Regulator (FPR) is also highly recommended."

yup, as been mentioned earlier it's adviced to change out / get new wires etc

[newsh]

"Due to the higher amperage draw of this pump, a hotwire kit should be used. An aftermarket Fuel Pressure Regulator (FPR) is also highly recommended."

yup, as been mentioned earlier it's adviced to change out / get new wires etc

Wiring in RS4 is better than S2 but yeah

[newsh]

Short length of R9 ethanol proof fuel hose use as an O ring

[Bowie69]

Is the outside of the hose ethanol proof......?

last I heard was that these ethanol proof hoses were specially lined, not a complete change in construction.

[varia]

You will need a submersible (ethanol proof) hose for that.
I even replaced these with Viton cos they got eaten up.

[Bowie69]

Yep, my understanding too.

[newsh]

Dayum

[newsh]

1/4” submersible pipe is hard to find

[sailaz]

"Due to the higher amperage draw of this pump, a hotwire kit should be used. An aftermarket Fuel Pressure Regulator (FPR) is also highly recommended."

yup, as been mentioned earlier it's adviced to change out / get new wires etc

easiest solution is to install an extra relay, like this:

https://store.034motorsport.com/c4-fuel-pump-relay-kit.html

just strange that this is recommended only for C4 with AAN engine......

https://store.034motorsport.com/billet-drop-in-fuel-pump-adapter-kit-39mm-aem-aeromotive-walbro.html

[sailaz]

The final thing was to install a 30A fuse in position 12, not sure if this is needed on our cars the correct thing is to fit a direct to battery harness) but it'll have to do for now and internet wisdom seemed to point to higher than normal current draw on the 450.
image_76946.jpg

not in position 13 ? unless S2 and RS2 fuses layout is different ......

[sailaz]

Short length of R9 ethanol proof fuel hose use as an O ring

with this adapter plate from 034motorsport Walbro 450 fits perfectly into RS2 fuel can

[larsaskogstad]

with this adapter plate from 034motorsport Walbro 450 fits perfectly into RS2 fuel can

what about s2?

[sailaz]

what about s2?

under 'fitment' chapter is written that it is ok:

just strange that this is recommended only for C4 with AAN engine......

https://store.034motorsport.com/bill...ve-walbro.html

[sal_s2]

Probably because they didnt get the s2 or rs2 over in the states

[Tom_]

what about s2?

it depends on the fuel basket size... I used an Fuel hose with clamp to hold in in that stock 7A basket