engine spec
Turbo Mini Forums

hey guys iv been toying with the idea of turbo charging my mini for a while now, but was put off the idea earlier as i was told the cylinder head i have isnt ideal and that it is lekely the head will crack. As the valve sizes are too big. However i have decided im going to go ahead with it and if i need too will have to buy a new head.

I am wanting to build a fast mini that will run 13s 1/4 miles so i can have some fun around my area with the ferrari, porsche drivers etc.

I was wondering if you could supply me with some engine spec ideas that would make my mini capeable of achieving this. It will be striped aswell.

I was thinking

* 1330 block
* MED light weight stage 2 rotating assembly
* MED light weight flywheel and back plate
* MED s/c drops
* MED s/c gears
* mirage turbo kit
* t2 turbo

im not sure what final drive to go for was thinking a 3.44
what compression i would need to use thinking about 8.5:1
will i need an intercooler
and also what cam to use was thinking an sw5

any help would be great guys and opinions as to alterations to the specthat you would make or simply just the spec you would go for.

Thanks in advance

liam

The turbo build has finally started

Have a look at this.

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=348364

Also a 13 second mini is not easy to accomplish. You need more than just bhp/torque. You need to look into traction, weight reduction etc etc.

EDIT: Correct thread linked

Edited by John on 13th Jan, 2011.

If something is worth doing, it's worth doing half of.

T2 is old hat these days, might be worth looking at a more modern turbo

BTW why you are asking the same questions over again?

http://www.turbominis.co.uk/forums/index.php?p=vt&tid=388325

If something is worth doing, it's worth doing half of.

Giving a possible engine spec doesn't mean anyone can quote what figures you'll see. How about building and running it, then go from there?

I didnt want to build it to then have to change it all again. As its more than likely going to be an expensive build. I was mainly thinking about supercharging the engine b4 so wanted to ask soome more turbo related questions. I already have the plans set to lighten the car etc. Just need a decent engine spec. But theere are so many alternatives i just wanted to see what people thought and get some answers on things im not to sure about.

The turbo build has finally started

The turbo build has finally started

liam, i would use the phase 2 cam,
and consider the sabb gt2052, on the mirage, go for the +20 bore 1293 cc then you will have a few more overboars to play with,

a well gasflowed head is a must for maximum power, will cotribute and enhance all the other hard core engine parts.........

give me a shout if you, need anything!

Do you mean GT1752 Steve? Or have you been up to something?

If something is worth doing, it's worth doing half of.

thanks for that benross. Just what i was after. Someone to point me in the right direction. With regards to the cam can you buy it in kit form like you can with the sw5? I dont suppose you have and ideas as to the other questions iv got? Eg the final drive choice etc? Would i also need to use an intercooler?

The turbo build has finally started

intercooler is NOT the icing on the cake ITS MORE! CAKE.

the final drive, choice is yours depending on the wheel size you going to run.. say if you are on 13s...... for a street warrior i would use a 3.2 fd with a Straigh cut clubman gearbox set up.


john iam always up to something

Edited by BENROSS on 13th Jan, 2011.

Il be running 12s. So i think il go for a 3.44 then? Is that right? Or would i need a lower f/d? Is there much fabrication to connect the gt2052 to the mirage manifold? Where do you guys buy your turbos from? Sorry for all the questions

The turbo build has finally started

the only problem i have was if i want it to be quick id have to use a high final drive. but also would like it to go above 100mph. about 130mph would be nice. am i wanting too many things here?

The turbo build has finally started

If something is worth doing, it's worth doing half of.

aaaaaaaaaaaahhhhhhhhhhhhhhhhh. why is it so confusing.

The turbo build has finally started

go for the 3.1 fd on 12s liam, i would suggest you use the search facility @ the top and get wised up what you are after ............. you need 5k + for what you want i hope i havent dampend your bonfire

thank you for all your help. you have helped alot. thin i am defo going to go turbo now. just got to decide on the cam as i thin im going to go for a turbo from mirage aswell as the manifold kit. will possibly go for the phase 2 cam as you have suggested. the phase 3 looks good tho. but i bet its not really that practical for a road going car.

The turbo build has finally started

phase 3 is supposed to be crap in anything but a balls out racer.

Edited by John on 14th Jan, 2011.

If something is worth doing, it's worth doing half of.

The Scamp has a phase 3 and I wouldn't consider that a balls out racer, however it's very lumpy and takes a little while to kick in.

I also have one for Vader.

We're talking Avonbar turbo cams here Jo. Are you talking about another companies by any chance?

If something is worth doing, it's worth doing half of.

Ah, yeah I am. Excuse me

ok then guys. think im going to go for the mirage turbo manifold kit, MAT25S2 hybrid T25 Turbo, and the avonbar phase 2 cam. any suggestions on the compression ratio i should have? was thinking about 8.5:1

The turbo build has finally started

CR depends on how much boost you want to run.

Well i was aiming for about 200bhp. Think that should just about be enough for the 1/4 mile times im after i think. So was thinking id need to run about 12-15psi? Also are dumpvalves worth investing in?

The turbo build has finally started