advice on a head
Turbo Mini Forums

hi i have a standard turbo set up and recently my head went. so i need a new one i might be able to get hold of one which is uprated. 36x32 and chambers 30cc. is this to over kill i mean will my car run alright still on releativly low boost as i no that if i run to high boost on the car with standard pistons etc it wouldnt do it any good. any advice will help greatly.
cheers

best valve sizes are 35.6 mm in ex 30mm for our turbo applications

are you talking about N/A race head here matty ?

28cc in the head with stock turbo pistons will give you a CR of around 8.4:1

with a good intercooler fitted you should be able to run 12 to 14 psi of boost, if the clutch can cope, if its a stock clutch or an uprated vertro one iam sorry to say it wont!

the stock turbo pistons will take this amount of boost

some may disagree though!

The spec mentioned was tried and tested by Benross, worked very well as a "budget" fast road engine.......

thanks for the help. its a head from vmax. my clutch i think is standard athough i have an uprated pressure plate,does that sound right. im not a mechanic, my dad is and hes out. but i remember bying the clutch from clutch techiques off ebay. does that help. what clutch would you recoomend me using then if mine isnt up to the job

Pre-verto setup is definately the best using a organic plate, and grey pressure plate, it will cope with a fair amount of bananas before slipping!

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1/4mile in 13.2sec @ 111 terminal on 15psi

matt , if that was the verto clutch with the .094 spring in it , , if you get the fitted clutch cover plate to have a flat spring when bolted up with a clutch plate in there ..by machining the flywheel pillars it bolts to ,then it will be well worth a try to see if itll cope with the power .

Medusa + injection = too much torque for the dyno ..https://youtu.be/qg5o0_tJxYM

9.85 @ 145mph
202mph standing mile
speed didn't kill me, but taxation probably will

if you used the 35.6 inlet you can fit a 32mm ex valve in without offsetting.

rimflow come in 32mm ex with a slightly wasted stem.and with the thick head is good at absorbing heat,


carl

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