There is more to life with TurboRenault.co.uk

Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!

5 GT Turbo Which engine set up as baseline for r5 conversion.

Stone14

Member
Pretty much everything I've read so far and advice given has pointed towards either an f4r-t variation or the f7p. I'm now leaving towards the f7p due to advice ive recieved for max potential.
Looking on line I cant seem to find any used f7p engines for sale but plenty f4r variations so I may have to settle for an f4r. Also there seems to be ALOT of variations, ie 770 774 776 830 etc, with no full explanatory info on the spec differences.
Also, thinking that I may just buy the engine in parts rather than a complete Lump. Buying an f4r block, then searching for a cylinder head to fit, none of the heads coming up are identified by those 770 774 776 etc numbers. So im abit confused atm as to which numbers relate to which heads, what the differences of each are and which is going to be best for max potential torque and power.
Are there any books or websites with detailed info on these? (So I dont need to keep asking simple newbie questions) So far sadly Wikipedia has the most detailed info.

Thanks for any help and advice

Nb: I qualified as a mechanic when I left school well over a decade (or 2) ago, so I can fix mechanical, weld, paint etc, but engine building converting tuning etc is going to be a learning curve for me which I hopefully 'overall' will enjoy.
 
A friend of mine did a mk1 clio with a megane r26 engine. He used the r26 box aswell but had to modify the chassis leg and modify a gearbox mount but the rest was basically a straight fit. If you did this in a Renault 5 you could weld in a top inner arch mount like what the mk1 clio uses and then use the rear dog bone mount.86370F2A-457C-4A98-ACE2-EB10DE908FF6.jpeg
 
Last edited:
A friend of mine did a mk1 clio with a megane r26 engine. He used the r26 box aswell but had to modify the chassis leg and modify a gearbox mount but the rest was basically a straight fit. If you did this in a Renault 5 you could weld in a top inner arch mount like what the mk1 clio uses and then use the rear dog bone mount.View attachment 201542
Hmm... ill look into that engine aswell thanks. I was reading about the 225 but gave up on then idea when I read it wouldn't go in. Is that turbo's aswell or is there room for a decent turbo or supercharge set up?
 
Only issue with the Renault 5 is that the space between the strut towers is a lot smaller than the Clio so you wouldn’t be able to use the megane turbo manifold like my mate did. Instead you’ll need a side mounted turbo over the gear box.

The megane 225 and R26 engines are the same difference being one has a diff and one doesn’t.
 
Only issue with the Renault 5 is that the space between the strut towers is a lot smaller than the Clio so you wouldn’t be able to use the megane turbo manifold like my mate did. Instead you’ll need a side mounted turbo over the gear box.

The megane 225 and R26 engines are the same difference being one has a diff and one doesn’t.
Do you think you could get an equally powerful turbo or better side mounted?
I'm still leaning towards an f7p after watching some drag racing on YT lol. A black on think the guys called Turbo Ted on YT 400bhp+
 
You will prob struggle to find an f7p. Old engine now not many about. On the other hand it will cost thousands for a good turbo conversion, id start with the honda its a better engine all round.
Agreed, Fred flinstone used a F7P in his car. You could buy an f7r and bolt it straight in then boost it later but will be big bucks. Like briggs said, go for a Honda lump
 
Back
Top