Im very interested in turbo'ing my mini in the summer when i finish uni, as iv got some funds stashed away for a rainy day. I was initially just going to rebore & rebuild the engine, but if you're going to do something, you've got to do it right first time round - so i thought id go gung ho and go down the turbo route.
Basically, the spec im looking at is (questions included in brackets)
Target - 120/130bhp
T2 turbo
Overbored block to 1293.
Rehoned & refaced
ARP bolts (does my block have 9 or 11? & which is best)
Centre main strap - 2 bolt
Standard crank (unless recommended mods?)
Replace crank bearings
Replace cam bearings
New pistons (Need suggestions!)
Standard rods (unless others recommended?)
Omega piston rings
ARP rod bolts
New cam (recommendations?)
Vernier duplex timing chain
New cam followers
(Are roller-rockers necessary?)
Machine my current head (is that possible for turbo use & what mods?)
High capacity oil pump
Ally 2 core rad
Small intercooler
Recondition my current gearbox (will this cope with a turbo?)
X pin diff
(Should i change the final drive?)
Center oil pickup
Lightened flywheel
Lightened clucth
Grey pre-verto clutch
So thats it! I think?
I really don't want to have to put in straight cut gears unless absolutely necessary because i dont think i could live without decent music in the car and from what i can tell, SC gears drown out everything (although i like the sound itself its not one to listen to for hours on end)
Is there anything on the list iv missed or that is actually on it but isnt necessary (iv got a budget in mind that i dont really want to exceed, so anything thats really not needed, il try to avoid). Obviously i don't want to try and cut corners or skimp on quality parts either though.
Oh, i also need some advice on suitable compression ratios and how to achieve such a ratio. I'v been advised a ratio of 8.0:1 is good?
Edited by carts60, 31 January 2011 - 05:28 PM.
