Mini Turbo 120BHP Rolling Road Tune- The Leafster

After a recent turbo conversion, the engine run in, its off to Bogg Brothers for the Doc to complete the final set up

Category:

Autos & Vehicles

Tags:

• Mini
• Turbo
• Rolling
• Road

[wickiezulu]

Fwiw, I read that the MG Metro Turbo was originally intended to have 120-130 bhp though the gearbox was not up to the task, which led to being detuned to 93 bhp.

Btw, I was thinking of dropping a 1.3 A-Plus engine into an Innocenti Mini DeTomaso shell and was wondering what would be a suitable lasting gearbox if I went down the Turbocharging route in order to reliably get the sort of figures the Metro Turbo should of been blessed with?

[Leafster1973]

@wickiezulu If your going A series Turbo, then an uprated Gearbox is a must for reliability. Centre oil pick up pipe, Cross Pin Diff, uprated Gearbox bearings. Straight cut gears are very noisy for a road car.

[gabylea1994]

eyup mate what make of head gasket you got in your as iv got a copper one and it dint seem to last 2 minutes!?

[Leafster1973]

@gabylea1994 This is copper gasket. Check your Compression Ratio is not too high. This engine was lowered to about 8:1. and the head and block were skimmed before assembly

[beachuk2000]

120bhp in a mini i recon is spot on for it's size and weight. top work

[Leafster1973]

@beachuk2000 Cheers!



[Alisterwolf66]

Yep, and pretty well too! They all use forged cranks and rods, from the factory - vintage racers will often get these little things spinning well over 8k rpm on otherwise stock internals (save, for forged pistons and better hardware). The castings are very stout, and thanks to the siamesed pairs of cylinders, a short crank.

I'm building a supercharged A+ 1275 myself. Quite impressive on the inside, they are!

[Leafster1973]

@histicamente1 The Engine has a special sealed SU Carb from the Leyland MG Metro, with a dedicated plenum chamber. The turbo blows through the carb, The fuel pressure within the carb is kept 3psi above boost pressure by the aid of a fuel pressure regulator controlled by the boost.

[Leafster1973]

Head Gasket was a quality Copper type. I was running quite a low CR as we opened up the chambers in the head, but never used go silly on the boost!

[Leafster1973]

It sounds like it revving more than it actually is. The redline was set at 5500rpm and Dave the dyno operator would never take the rpm higher than the engine felt. Considering an original Morris Cooper 970S revved to over 9000rpm standard this is quite tame! So you see, the Mini was more than happy on the rollers, Intercooler, Oil Cooler and uprated rad made sure everything ran just right.

[themordamoja]

For a mini fan, it sounds like you are cruel and you are going to kill the mini.

Buy different car, thats m y advice.

[detroitbluesguy]

Can't you tow cars with another car in the UK? JC