turbo engine
Turbo Mini Forums

hi i have got my standard metro turbo 1275 complete and was just wondering what can i do to make it better?
e.g better cam, roller rockers, what head work can i get donee,
and anything else that can be upgraded
thanks for the help

sorry forget to say its a 12g940 head

your better will be different to my better and Toms better and Mattys better ect

all depends on budget and what you use the car for

true.. well its a project atm the whole car is as iv got another mini to use for now.. and id spend however much was needed really to do a good job of the engine :/

In boost we trust

haha why's that?
il spend abit on it then .. to gett it to a prittty good engine

It's best to work out a) what sort of power you want and then b) what you are going to use it for.

Then you can look at the various project threads on here and work out how best to achieve it. Once you know what you want we can give you more specific answers.

well im goin from a 998 stage 1 anyway so its going to be a bigg difference enyway but not realy sure what sort of power atm .. i was going to build it as standard then change it but i thort it would be easier just to make it more powerfull straight away?? or not..:/? and il be using it for road use .. looking at a 12g940 head atm with ported polished ect. £100 i can get it for but would it be worth just putting a head on it?
thanks 4 all the info

In my case, I'm spending the money to build a bullet proof bottem end, with a descent gear box. I'm then bolting a 'descent' 5 port head to it and initially running a suck through super charger. It's not the ideal sollution and won't make the most power, but I've bought all the bits now. The idea behind this is that I can then bolt pretty much anything within reason to the short engine and make more power when I have the time/budget/inclination to do so.

At the minimum, I would rebuild what you have with new bearings etc.

Edited by apbellamy on 7th Jun, 2010.

well unlimited budget speak to JK on here he will build you a nice k1200 turbo with a nice ecu

i have blown my budget 4 or 5times over...
pick a spec and spend what is needed to build that, dont change plans and dont add up the receipts

Yes i moved to the darkside

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

yes my dads checked it all and said that its fine .. have been told they are about 97bhp as standard so i was just going to put a better cam in than standard a ported head and maybe rockers..???? jus for now .. then in future maybe put other bits n pieces on?
could i just put a head cam and 1.5 rockers ? or if i start changing some things will i have to upgrade different parst aswell?
thanks

depends what you're after really. We've put a n/a MG metro cam in our turboed metro van, a well ported head and about 14psi of boost should give us around 140BHP. Bear in mind we have a very low compression ratio

How many cc's do the chambers have on this head that you are thinking of buying?

If it's designed for n/a it won't really be suitable, as you cr will be increased.

In the 13's at last!.. Just

im not sure about the head all i knw its a 12g940 head.. the 1 that came off the turbo is a 12g940
but the one im looking at has had the work done to the head ... also i got told a n/a metro cam and i want to run mine at about 8-9 psi for now ..
but would i need to change pistons or enything like that?
or will standard ones be ok?
thankks

12g940 means nothing. All 1275 heads have this casting number.

In the 13's at last!.. Just

oh ok then... so how can i get info on the head?:/ thanks

Measure the chambers

In the 13's at last!.. Just

ok then il get measurements of as much as i cann ..
anything else i would need to know??
thanks

Youll need to find the volume of the chambers. And the volume of the pistons.

Then you can find the compression ratio.

In boost we trust

ok thanks what does it need 2 be about??

hmm dad says leeve as standard :/ would it be worth just putting a better cam in it ?
as its in bits enyway
thanks