Formula Renault engines F4R 7**

[mikekean]

Does anyone know what the difference is internally between a Formula Renault F4R 7** engine and the F4R 7** engines found in the road going clio 1*2?

 

[Fred@BTM]

come again? 7** and 7**????

 

[BIGASH]

Does anyone know what the difference is internally between a Formula Renault F4R 7** engine and the F4R 7** engines found in the road going clio 1*2?

I'm afraid I can't help you but I have been told that the dry sump's that come with the formula engines is a no go in the clio.

 

[mikekean]

come again? 7** and 7**????

i.e engine codes F4R 730/F4R 738

 

[Fred@BTM]

heads mainly

the original mk2 cup cars had the phs1 lumps (the most powerful IMO) big exhaust ports etc

on the later 736/738 they moved to the turbo casting with the smaller exhaust ports, i guess maybe for emissions/cost saving

there is talk of the cranks being different also, but nothing worth worrying about

 

[mikekean]

So a formula renault engine is basically the same spec as a the UK cup car engines apart from the dry sump?

 

[Fred@BTM]

ish, there are moddifications internally

oil pump and drive etc, sump, oil squirters, plus a few other bits, we stuck one in a clio and it did great power (quite a bit of work to convert it back to road spec from memory)

 

[JackJack]

Fred would the dry sump work on a road car with the transverse engine layout? Not trying to do it just interested.

 

[Fred@BTM]

can't see why not, although it would be a s**t load of work for not much gain, would look cool

 

[Gray]

Didnt Tom, JMS lad try fitting the dry sump kit to the race car they where building?

 

[Tony Hunter]

Sort of, yes.