280BHP Kanjozoku JDM Style MINI Cooper S (R53)

A faster 1:52:14 lap round Cadwell in a modified 2003 MINI, my 3rd trackday and first at Cadwell. This looks to be the quickest lap I had on camera, still before any tuition so gained a little later on but no footage as the battery ran out of juice.
Specs: Fully built engine, forged pistons, cams, head, valves, block etc.
Full JCM race exhaust with decat.

[@id0nthav3anam33]

WE WANT MORRRREEE

[@YesIAmThatCoolBitch]

lovely sound!

[@ryanmielnicki4985]

Great driving! How fast were you getting up to on the straight if you can remember?

[@NathanFrench]

Nice driving. What’s been done to get 280hp though? Doesn’t seem to pull any faster than my 240hp JCW.

[@batousan_]

Well spotted, it wasn't pulling like it should for sure, and in-fact in the other video I was short shifting (rev limit was 7,800rpm) as it was a crazy hot day so I was managing intake air temps which were fairly high. The engine was built in a way that the power was high up so it was not that torquey in the lower rev range. The ecu was probably pulling things back and therefore not making full power, common issue with big power, hot ambients and the top mount intercooler. It was 242hp at the wheels so it should really say 280bhp in the title in all honesty:
#Bytetronik ECU Remap
#KMT 13% Reduced Supercharger Pulley
#John Cooper Works GP Intercooler
#John Cooper Motorsport Air Intake & ITG Air Filter
#Bosch 550cc Fuel Injectors
#OBX 4-2-1 Exhaust Manifold
#John Cooper Motorsport Cat Back Exhaust
#Neil Roper One off/Custom Ported and Polished Cylinder Head
#G&S Enlarged Inlet/Exhaust Valves
#HKS Decked, Bored, Honed Forged Engine Block
#Wössner Oversize Forged Pistons (Custom Compression Ratio)
#ARP Rod and Head bolts
#Mahle Motorsport Bearings
#John Cooper Works 5 th Gen Teflon M45 Supercharger
#CatCam High Lift Camshaft
#Mocal Oil Cooler
#ClutchMasters FX400 Carbon Clutch
#ClutchMasters Lightweight Flywheel

[@NathanFrench]

@@batousan_ That explains it then! I wonder whether my 240hp guesstimate is too conservative then, as my spec list is similar to yours (excluding bottom end and clutch etc.) and it's stupidly quick! I watched your touge run video earlier and it seems to be pulling much harder there.
Nice car dude and fairplay for all the work you have put into it.

[@batousan_]

​ Nathan French Thanks man :) .How much boost you running or pulley size if you don't know? I was only running a -13% so it had less punch than when I ran a -17% which was great on the road as there was a very different graph. The power came on earlier and had much more torque lower down. This thing was all about being above 5k. The one thing that let it down was an older spec gearbox which was way too long, so with a 7,800rpm red line you were doing 78mph at the top of second so it wasn't punchy out of tight corners as the torque was all up top.
The main reason I went this route was, if you watch intake temps on track with a 17% you may have good power for small parts of the lap whereas the 13% meant the power, whilst less on a dyno, was much more consistent as you just generate so much more heat by running the charger at higher boost with a 17%. Also with a near 8,000rpm redline you'd be spinning the charger way too hard, it was built to spend a solid 45-60mins on track before having to come in to fill up, not a few fast laps. If I was running a 17% on this day at Cadwell I'd have spent a lot less time on track in fear of engine det too.
I sold the car 4 years ago, in hindsight a modest 210bhp and all the money on cooling, suspension and brakes would have been enough to enjoy it , you know how it is tho you just get carried away :)
I now have a Import Miata 1.6 NA and a 300hp Subaru Forester STI to replace this car.

[@NathanFrench]

@@batousan_ I'm unsure on boost pressure (my first Mini) but its running a 17% pulley. I've never had it on a dyno nor do I have a printout, but I am definetely planning to get it on there asap more to make sure it's running right and not leaning out etc, but on the road it feels great. Mines an 06 facelift so has the shorter box I believe, but it is crying out for an LSD so that is definetely on the cards at some point in the future. Power wise I think I am happy with it, but I do plan to upgrade the brakes too. Mines more of a weekend toy/backroad blaster, however I have ordered an MTEC front mount to make sure the intake temps stay nice and low. It's running a GP intercooler atm but I got a great deal on the front mount.
I also have an Accord Type R which you can see on my profile. That's running 262hp now on a mild-ish N/A build. For such a large car, it weighs surprisingly little (1180kg) and goes very well down a twisty road. Feel free to check out my on board vids, providing you can put up with me and my buddy talking pure bollocks 😂

[@haule4426]

Wheels tire and offset?

[@Medziplyn]

Hi. what is your geometry?

[@user-cf2eg2lu9o]

I have a mini Cooper s r53 automatic (240hp) in the drag i got you but in there i dont know. Perfect driving🙂

[@Mahalo_83]

Auto? You’ve got nothing