twin 40s, fuel pump

[Jiffer]

If I was to fit twin 40s to a 1600 xflow powered cortina would i need an electric fuel pump and regulator or will the manual one do?

[Fiesta Steve]

Manual one will be ok but you need to make sure it can keep up ie: won't run lean.

 

Electric pump and regulator are recommended

[deltamal]

Had a Crossflow with twin 40's and mech fuel pump, burnt a piston out ragging it up a long steep hill....

[Fiesta Steve]

Thats the risk

[Jiffer]

risk, what risk, I didnt realise there was risk involved

so humour me here what caused it to burn out a piston?

[Fiesta Steve]

risk, what risk, I didnt realise there was risk involved

so humour me here what caused it to burn out a piston?

 

If the pump can't keep up the mixture will lean out. Its the incoming fuel that cools the piston crown, remove some of that fuel and the piston gets hot, very hot, sometimes they melt

 

If the engine was standard apart from the carbs it maybe ok, I've used mechanical pumps before without trouble on fast road engines. If your state of tune requires more fuel an electric pump is recommended as mentioned

[caprinerd]

risk, what risk, I didnt realise there was risk involved

so humour me here what caused it to burn out a piston?

 

If the pump can't keep up the mixture will lean out. Its the incoming fuel that cools the piston crown, remove some of that fuel and the piston gets hot, very hot, sometimes they melt

 

If the engine was standard apart from the carbs it maybe ok, I've used mechanical pumps before without trouble on fast road engines. If your state of tune requires more fuel an electric pump is recommended as mentioned

 

never knew that cheers steve