Grinding 1st gear

[minionly]

Mini grinds when changing frim seconde to first whilest driven buu when u slow right down it dosent grind any ideas

[kerryminigringo]

Worn syncro ring,it is an engine out job to sort it but if you know about it and take the gear changes easy it will last for a while but you should budget for a gearbox rebuild in the future.

[minionly]

will do thanks

[kerryminigringo]

No bother but check out prices for re conditioned boxes as the likes of Minispares do them cheaper than buying the parts yourself.

[minionly]

Ill just dump it on paul hickey lol

[minis24se7en]

Mini grinds when changing frim seconde to first whilest driven buu when u slow right down it dosent grind any ideas

The first thing to enter me head is that there mightn't be anything wrong at all with it!!
Is it just when dropping to 1st, or is reverse or any other gear affected?

Probably every car will grind or clunk when dropping down to 1st gear. When you say "whilst driving", at what speed are you talking when you drop to 1st? With the way a mini is geared you'd only really need 1st for pulling away from a standstill.

Just assuming for arguments sake it is ok, and just the natural grind when going to 1st at speed, this practice WILL end up wearing the syncro and a rebuild needed eventually as kerryminigringo already said above.

[minionly]

Only grinds st speed whilst dropping gear fine from take off

[minionly]

grinds peed is at about 20 30 when comin to a stop

[minis24se7en]

Really not been smart here , but just to be clear, At 20 to 30 mph you change down to 1st gear as you're slowing to come to a stop?

It's Just that If you're dropping down to 1st gear at 30, or even 20 mph its way to fast for a standard gearbox and it will grind and clunk, and eventually do damage if it hasn't already.

[minionly]

Ill keep an eye on it lol the speed was just a guess id a
Sait less speed and ur probaly right im probaly being a but heavy on it lol

[minionly]

Fecking minis lol

[minis24se7en]

Ill keep an eye on it lol the speed was just a guess id a
Sait less speed and ur probaly right im probaly being a but heavy on it lol

Ah i know, speed is hard to estimate, you might only have be doing 10 - 15 mph, but it's the same point anyway.

I'd have a similar driving style, threshold brakeing and using the gearbox. Makes for fun driving though, but with a standard mini gearbox not when it comes down to 1st gear! .

Overall it'd be better just to slow up in 2nd gear while using the brake, and just pop it into 1st when you stop, ready to take off again. There is a good range in 2nd gear, you can slow down to 5 mph (probably a little less!!) and accellerate away again without the engine labouring.
Get it checked out anyway, or better again get another mini driver to take it for a spin and you'll know straight away .

[minionly]

Ill drop it up to pauly in a week or so but ill try out wat u said

[minis24se7en]

Ya, hopefully theres no damage done and it's just down to a slight change in style of driving

[minionly]

Suppose when im used to driven 3 diffrent cars

[minis24se7en]

ya it can happen,
along with hitting the wipers instead of the indicators,
actually forgetting what car you're in when you're driving it,
and looking for a completely different car when you return to the carpark!!!!!

[minionly]

Lol doodoo i need a wiper motor too

[The Marcos Graveyard]

30mph in second gear with a standard ratio box/2.9diff/12" wheel is 3271rpm

30mph in first gear with a standard ratio box/2.9diff/12" wheel is 5484rpm

That's some jump, no wonder it objects

[minionly]

Ah tmg i could be wrong on,the speed lol it grinds thats all i know

[Tony Cooney]

Realistically, you should never need to be going down into 1st gear to slow or stop any car.
I'd be inclined to agree with others above and that perhaps you need to reasses your gear changing style....


Tony

[minionly]

Yeah point taken sound

[macker]

Might be the angle the engine is at aswell?

have you an ultimate engine steady fitted?
how are the engine mounts/steadies?

only reason I say this is because some minis that grind or crunch into second gear do so because of this,
adjusting the angle of the engine slightly might help

[minionly]

Nope its defo a gearbox had a problem i took it out for a gentle spin and its still happening

[joebe1]

I have a jack knight dog box in the rally car, its designed to be put into 1st whilst moving, eg coming into a slow hairpin and even so it does nt like it. I could nt see why you d ever have to put the car in first for normal road driving whilst moving. If it was grinding whilst moving from 1st to 2nd or from 3rd bac to 2nd i d say you have a problem.

[minionly]

look theres a problem when i go from second to first im not rallying the mini around i just noticed it whilst driven it fast and slow!!