21 replies to this topic

[joel93]

hi i need more power from my 94 sprite spi, i was thinking of an engine swap to a complete stage 3 engine but it seems expensive
so would a stage 3 kit be as good im looking for 80-90 bhp but will my standerd cams alow the kit to reach my goal.

minisport
thanks..

Edited by joel93, 10 February 2011 - 08:42 AM.

[joel93]

help plz!!!!

[Tommyboy12]

That tuning kit should allow you to get close to your goal but it also depends on the state the engine is currently in. If its old and worn it will be down on power to start with and by chucking some tuning parts at it it will only degrade more quickly and maybe not even reach your power goal. The SPi is hampered also by its ECU. It cant be chipped and isnt much good at taking more power than standard but aftermarket ECUs arent cheap.
You would be better off making sure your engine and gearbox are in top nick before you go spending loads of cash on it to make it go faster.

[joel93]

im just thinking of geting base mods for the moment like throttlebodys etc. then hopfully put her on carbs next year some time

[joel93]

are stage 3 engines eny good?

[minisilverbullet]

it is a bit more limiting 'tuning' an SPI mini than a carb. But there seems to be lots of developments at the moment, but it all depends on your budget.

I guess a stage 3 head, lcb. etc will work well, but as above depends really on the state of the engine you have.

Some companies (specialist components is one) sell an after market ecu. I also saw in a mini mag that SC are also selling a 5 port throttle body on twin injectors.

A super charger from http://www.vmaxscart...ercharger-kits/ is also an option.

[joel93]

how much are these ecu's?
will my ecu be ok with the stage 3 kit's eleged 85bhp
thanks again

[minisilverbullet]

how much are these ecu's?
will my ecu be ok with the stage 3 kit's eleged 85bhp
thanks again

From specialist components - just over 500 for the ecu and about a 1000 for the ecu with a new throttle body.

The standard ecu is said to be ok up to 100bhp


july 2010 miniworld had a good feature on the ecu and tuning.

[Darkscamp]

I ran a 1310 spi with a stage 4 head, kent injection cam, an lcb and pipercross induction kit.

The standard ECU ran it perfectly well

Edited by Darkscamp, 10 February 2011 - 04:40 PM.

[joel93]

i dont want to spend £800 or whatever it is on the stage 3 kit if it dosent really work
but all sonds good at the moment.
also iv heard roller rockers do the same as a cam but no need to remove the engine is this true or would both be better.
im assuming the stage 3 kit elegid 85bhp is done of a cooper which is already runing a bigger cam.

or should i just buy a stage 3 engine?

sorry but im not the best at when it comes to engines so i count on others lol....

thanks again...............

[andymini12]

i think you would be better to get a modified head of ebay or on here and then a stage 1 kit that is basicly what that kit is.
and then just get the roller rockers from mini sport. this way it would be a lot cheaper.

[joel93]

iv got a stage 1 kit well just need the LCB, so all ill need is the head and roller rockers
will this be drematicaly faster?

[andymini12]

im not sure to be honest, the stage one kit should add 15-20% increase which is ok, but i dont think the rockers really do anything, i think alot of people dont really worry with them, but a modified head is good so somthing like a stage 3 head.

[joel93]

is a cam worth getting, seems a lot of hassel taking the engine out
roller rockers do a very simaler thing dont they?

[andymini12]

cam is a lot better than roller rockers, i think roller rockers can evan make you loose power lower down the rev range or that might just be on a 998, but a cam will add power most of the way through the rev range and more power as well.