17 replies to this topic

[01smartc]

Hi there people, i am a bit stuck and i thought that i would ask some people on this forum for some help. I am looking to get a bit more power from my A-series 998cc. I am not sure what to do. i have a stage 1 kit fitted but still can't get more than 75mph and the acceleration is poor aswell. Being a bit of a speed demon i want abit more. i am thinking of a few options. i thought fit twin 1.5 SU's and a stage 4 head from mini speed. what u think? any good or have u got any other ideas? would this give me a good power increase. would i get more then 75mph? any help would be appreciated. thanks!!!

[Pooky]

You should be getting more than that from a stage 1'd 998 to be honest

I had my Maniflow system set up on the rollers and got 55bhp

That gave me about an 85mph top speed on flat and with a slight hill it'd go well off the clock

It came off the line really well too

Have you had your mini rolling road tuned?

[minislapper]

Sounds like you have a problem somewhere.

Poor acceleration and can't get over 75mph?? Definitely something amiss. You should be able to get over 75mph with a standard 998. A stage 1 kitted 998 should go above that easily.

Did you have it rolling roaded when it was fitted? WHen was it last serviced?

[Jordie]

what should you do?

swap it for a 1275,1293, 1330, 1380 engine.

People spend loads on a 998 when they only get the same performance as a 1275....

And if insurence is an issue, you need to be asking how much more for the mods on the 998.

[Don't Panic]

or get a turbo 998, can't remember the link but there are people who do them..mmm tasty

[01smartc]

hi, i have had it set up on the rolling road. but i dont think it was very good. he dint even give me a print out!!! went out last night......top speed 79Mph??? i think that the throttle cable is not opening the butterfly all the way. is that a common problem and whats the cure? the pedal doesnt seem to be able to go far enough to open it all the way. also if i am getting a new cylinder head what stage should i go for and what carb afterwards. thanks

[Deceptacon]

I think the same applies to my mini!

JCG conversion, which means twin hs2's, Stage 2 Janspeed head, new inlet and outlet manifolds, dont' know if it includes a new exhaust?But I would presume this would be pacier than a stage 1 998. However, the maximum speed I've reached in it is around 60. The accelerator pedal is quite stiff in comparison to my friends, in comparison it feels like you could blow his, whereas mine is quite stiff? does it need lubing or is there something up with the carb?

My car also has trouble starting after it's been running for a while, the engine turns but doesn't seem to catch, and sometimes when it does, the engine just splutters and dies. I'm sensing a carb problem?

Cheers in advance

[01smartc]

???

[Clubby1275GT]

no offence to u lot with 998's, personally i think there good if ur putting ur car back to standard but if u want power, ur better of putting a 1275 in. insurance is hardly any different, plus if ur that bothered dont tell them, its hard to tell the difference jsut from looking anyway!
a stage 3 head (£400) and twin carbs (£300 brand new) will cost u more than a 1275 mg metro engine alone.
u could just buy a mg metro engine and leave it at that. there 69bhp standard!
i have one, mated to a GT gearbox and it flies to 60, im only losing top end because my damn clutch slips,
Some of the chaps make a valid point, why not try a 998 turbo?

[chairchild]

plus if ur that bothered dont tell them, its hard to tell the difference jsut from looking anyway!

998 thermostat points towards the radiator, 1275 points towards the grille

998 heater tap mounting bolts line-up with the grille, 1275 ones are aimed more at the alternator :wink:



it's EXTREMELY easy to tell the differences between a small-bore, and a large-bore, plus the engine ID numbers wont match up. If you cause a major crash (like, into a porsche!) then the insurance Co will do as much as possible to avoid having to pay out for your car as well, which may mean sending out someone who knows minis

For the sake of £100, just tell the insurers!









mind you - if it's going to be the same engine size, and it wont look all that different to standard............. :wink:

[01smartc]

i dont want to swap it for a 1275 as i have only a small budget and also it would cost alot of money to have the new engine fitted.

[Clubby1275GT]

if ur on a tight budget then u wont want a stage three head, minispeed quote "£393.94" for a stage 3 850/1000/1100 cylinder head, that doesnt include postage, plus £326.18 exc VAT for twin HS2's on a manifold. so thats £700 for an engine that will just about keep up with a standard 1275 mini, i no what i'd choose. up to u at the end of the day.

[01smartc]

my budget is £500 including rolling road session. i already have a twin 1.25 carb from a mate so i onli need a cylinder head.

[miniboo]

pm bluemini as he does the odd head or three and so will be able to help you out.

[miniboo]

oo er just read that and it doesnt sound quite right!!!