11 replies to this topic

[dansalter]

did a 0-60 on my car yesterday n got around 15 seconds (on a stopwatch the passenger was holding)

its a 998cc 1988 mini mayfair with a few mods taking it up to 48 bhp (measured on a rolling road)

just wondering if this time is any good to be honest. what is the 0-60 time for a standard 998?

i was planning on dropping a 1275 in soon but don't know if it is worth the work.
thanks a lot
Danny.

[bmcecosse]

Depends on the accuracy of the speedo - and was the road dead flat/no tail wind etc ? Should do at least two runs - in opp directions - and average. I would say - stick with that 998 if it's running well.

[dansalter]

thanks for the reply.

yeah i did two runs in oppisite directions, no obvious wind but the road wasnt perfectly flat. i got 16 on the first run n 15 on the way back.

would like to know what the standard time is though, if you or anyone knows it?

it does smoke a fair bit in the top revvs, is this a sign of anything?
i may start a new thread about that if it worth it?

[bmcecosse]

That's about original 998 Mini Cooper performance. But the figures don't matter - it's how it feels to you - on the road! You should get better mpg with the smaller engine - especially if you gear it up.

[dansalter]

oh yeah, compared to how it was before its so much nicer to drive. it doesnt struggle as much as it used to.
i was just interested because its nice to know the difference that the work you've put in to it has done i suppose.

when you say 'gear it up' are you taking about making the ratio's higher?
would this make it better on the motorway? because i would love to take it to uni with me but its just so uncomfortable for motorway driving.
also what would doing this involve?

[bmcecosse]

Yes - fit a lower (numerically) final drive gear set. I just sold (thanks Emma!) a 3.1/1 gear set - that's the ideal ratio for a warmed up 998. To fit really means taking the engine + box out, although it 'can' - with considerable difficulty - be done in place.

[dansalter]

hmm interesting.
how much do these tend to cost?
also whats the standard ratio?

[Cooperman]

That's pretty good for a 998 with c.50 bhp.
An original Cooper 998 did it in between 14.5 & 16 seconds in standard form with a quoted 55 bhp and a 3.76:1 diff on 10" wheels.
I recently took the 0-60 time for my Historic Rally Cooper 'S', which is a 1964 car on 10" wheels with a cross-pin diff (not an lsd). It was against a calibrated tacho and it gave 7.4 secs, 7.8 secs and 7.5 secs on 3 runs using only first and second (high revs in 2nd), and 8.3 secs and 8.5 secs using 1st, second and third. This was on the runway of a very flat airfield with minimum wind but in 2 directions. The bhp was last measured as 117 at 6300 rpm at the flywheel, but it also has 102 bhp at 5200 rpm. It is 1310 cc on twin H4 SU's and a 286 cam, etc., with a SC Cr box and SC drops. It would be quicker if I didn't run with a sump guard, full gage, two spare wheels and full rally instrumentation.
The key to the differences are how much wheelspin you get from rest. I have to keep the revs over 3000 even at take off to avoid it falling off the cam, but try to minimise wheelspin at the same time.

[MRA]

Yes - fit a lower (numerically) final drive gear set. I just sold (thanks Emma!) a 3.1/1 gear set - that's the ideal ratio for a warmed up 998. To fit really means taking the engine + box out, although it 'can' - with considerable difficulty - be done in place.

Which would normally be called a higher final drive....... ie, 3.44 is a lower ratio than a 3.21 the 3.21 is the higher of the two.

A crown wheel and pinion could be anywhere between £120 and £240 depending on the type (std or LSD configuration) and ratio required second hand units are available but obviously have no history that you can make a decision on, you should always use a matched pair.

Don't bother trying to do the job with the power unit in the car as this is a skilled task that needs to be fitted correctly using shims etc.... you have to remove the radiator and end cover (speedo drive unit) and both drive shafts and diff side covers and the diff main cover..... however if you have studs holding the diff cover on you simply will not get it off.

Regards Martin

[bmcecosse]

Which is why I said 'with considerable difficulty' - which was just to cover the clever clogs who would come on and say they had done it with the unit in the car. It 'can' be done - but I really don't recommend it!

[Kam]

And dont bother measuring 0-60 carrying a passenger?????

I'm not saying hold the stopwatch yourself as thats stupid but unless you got proper timing gear and the right conditons you not really helping yourself for figures?

[dansalter]

woh, thanks for the replys just checked it before i went to bed.

very impressive cooperman, would love to do something like that but alas lack of funds prevents it. thanks for the spec tho i'm actually really pleased with how close it is to the cooper.

i recon that if i was gonna have to take the engine out to fit a 240 add-on id probs use the money plus a bit to buy a reasonable condition 1275, do it up n drop it in. thanks anyway for the price guide it's still very interesting to know these things.

oh and i know i shouldent have had a passenger but i at least made sure that the lightest one of them came in with me, it was only out of curiosity.