468 replies to this topic

[Dom]

Thanks

[Bungle]

your wheels need a clean dom

[Dom]

The whole car does, hasn't been washed since the weekend after I got back from the Nurburgring.

[Dom]

Since having the replacement engine and gearbox fitted my fuel consumption has been bad.

Previously I did 250 miles per tank of fuel, averaging 45 mpg.

Now I am doing 100 miles per tank, averaging 20 mpg.

I can't afford to run the mini like this and have been told that even if I rolling road it, its not going to make that much of a difference because of the torque of the gearbox.

A possible solution is to buy a gearbox from Guessworks and that would solve the fuel consumption problem, however this means taking the engine out again, which in itself costs lots of money and inconvience.

Hmmmmm.....

[Sam]

who an earth told you that because you have that gearbox it will only do 20mpg??

get it properly set up on the rollers and you'll have decent fuel consumption again

[Jordie]

as sam said. Rolling road. The needle will be running too rich

[Sam]

also how comes you've got that old minging coil on there, you should put that nice new one you got in germany on

[Dom]

No one told me it would Sam, at the moment it IS only doing 20 mpg.

Mark thought best to use the coil on there as it was working.

[miniboo]

thinking baout the age of your car anbd the replacement engine i think both will have a 3.44 diff

[RacingGreen]

No one told me it would Sam, at the moment it IS only doing 20 mpg.

Mark thought best to use the coil on there as it was working.

The gearbox should make no difference to the mpg if it has the same final drive, so as the others said a rolling road should help.

Also, do you still have your new coil? it makes no sense to use an old coil instead of a new one.

[Jordie]

Also, do you still have your new coil? it makes no sense to use an old coil instead of a new one.

if it aint broke, dont FIX IT.

[RacingGreen]

if it aint broke, dont FIX IT.

That may be, but coils do break down over time. I was asking to see if the person who changed the engine kept dom's coil for himself, as its always good to have a spares, especially one you know works.

[Dom]

thinking baout the age of your car anbd the replacement engine i think both will have a 3.44 diff

The final drive is 3.66, previously it was 3.44.

Also, do you still have your new coil? it makes no sense to use an old coil instead of a new one.

if it aint broke, dont FIX IT.

Exactly

if it aint broke, dont FIX IT.

That may be, but coils do break down over time. I was asking to see if the person who changed the engine kept dom's coil for himself, as its always good to have a spares, especially one you know works.

I have the new one.

Taking into account that the replacement diff is 3.66 not 3.44 will it make a difference having it rolling roaded?

[miniboo]

a rolling road will alwys make a differnce.

i dont think that the 3.66 diff will have as a big a difference on mpg as that so it must be something else along with that.

you may well be able to just swap the crowen wheel on the diff as i think the pinion is the same on a 3.44 and a 3.66

[Jammy]

As I said, I think it needs rolling roading. If your unsure go to BD Engineering up at Newington (01795 843980) and just ask them to do a power run rather than tune it, he should then be able to tell you where and if its running rich. A power run should only cost £20-30.

Personally I'd then get it tuned at ML Motorsport, but it will be more expensive than BD.

One thing I have thought of. Is there a small diameter pipe going from the distributor to the carb?