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The mkiv Supra Owners Club

11 sec @128 qtr mile


jagman

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As some of you know I am into the new Minis ,just thought I would run this past you ;a MINI in the US is running 11 secs and 128 teminals with 1.6 60ft, it would put to shame a lot of supras:eyebrows: but the interesting thing is he is using a stock (except pistons)bottom end,not even rod bolts upgraded ,was making 500 bhp (70 nos) using a twincharger @25 psi boost ,and stock cylinder head,

and you thought the supra had a strong engine! bloody good from a 1.6 litre engine- the guy is now looking for 600 bhp and 10sec qtr

and is upgrading the bottom end!

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chap called Fireball Tim , its a drag car more than road ,also stock 6 speed getrag and lsd ,only the clutch uprated and flywheel! he has done many runs this year and it has stayed in one piece. makes my own project of 325 bhp + 70 nos seem tame

and I am using ARP bolts and Wosner forged pistons etc,but nice to know the capability of the stock components its not a one off thing either Amd had one to 430 bhp at which point the head studs failed but again stock bottom end!

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chap called Fireball Tim , its a drag car more than road ,also stock 6 speed getrag and lsd ,only the clutch uprated and flywheel! he has done many runs this year and it has stayed in one piece. makes my own project of 325 bhp + 70 nos seem tame

and I am using ARP bolts and Wosner forged pistons etc,but nice to know the capability of the stock components its not a one off thing either Amd had one to 430 bhp at which point the head studs failed but again stock bottom end!

 

Your own project? got any pics?

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my own project is mid conversion I am using a better supercharger , but its not the conversion so much as making it a complete bolt on kit for numpties,with detailed fitting instructions which is the hard part, you would not credit the ability of the man in the street to get something all wrong ,and then blame the product,the design,the car ,the weather,their mum.... even simple bonnet stripes get fitted wrongly and its the stripes fault!

I am also incorporating an electric water pump,under car oil cooler,extra bonnet vents,combined air and water charge coolerwith 3 rads,and lots more . It will be featured in a couple of mags and I am hoping to do a track day comparision against an M3 or M5 or similar so it can be put into perspective just how quick you can make a Mini go. It would be nice to compare against a JCW but that just may piss off BMW and the mags would not want to know. 400bhp in 1225 kg car should be quick:D

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  • 2 months later...

update for those interested,and there is a possible supra application, the charger project has progressed well and is now fitted to the car,some superb cad/machine work has produced a better than factor fit, I have incorporated some of my own ideas and refinements,and have a list of possible upgrades to the kit for the future -up to 400-500 bhp is possible,with great expense and only of real use to a drag fanatic/race car.

One of the innovations is the fitting of a 5th injector directly into the charger intake,helping to cool the charge air (akin to water injection) as employed on the later merlin engines to great effect.

there is also a provision for a 6th injector post charger if required. The beauty of this is the ECU can remain stock.the interesting thing is we have a control unit which can fire upto 4 extra injectors controlled accurately and with manifold temp being monitored and used to enrichen if temp approached a det condition -so inbuilt safety,this development could be used to remove the maf sensor in the supra and add extra injectors simultaneously.road tests/dyno in Jan

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I believe the guy in the states is now in the mid 10s with his MINI and making 600bhp !!!! and you lot are struggling with a multivalve ,twin turbo,3 litre ,straight six , there is a guy in UK running a mini one with nitrous (1320 autos) getting mid 12s

come on you supra owners do keep up:d you might see in the spirited driving section I got mullered by a mini!!!

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  • 2 months later...

Latest Update

When I am not stripping a supra

the supercharger project is progressing well,couple of pics for those interested

a few more refinements added, the control unit developed can control up to 4 extra injectors,its is adjustable for injector duration and has inputs of crank sensor for rpm,boost pressure sensor,and intake temp, from these parameters it controls the extra injectors which fuel into the supercharger intake giving good atomisation and a bit of cooling too.

(the control unit could be adapted for the supra)

The point of the excercise was to develop something as an alternative to expensive ecu fitting which would also keep stock injectors in place and stock ecu so normal idle and running off boost but controlled fuelling on boost also the temp input is used to richen slightly if temp gets too high and offset detonation

The charger is a screw compressor (proper charger)rated to about325 bhp, larger one could be used to about 550 plus but a bit pointless on a MINI

If anyone has pots of cash I will do one for the supra:d

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