Morris Minor Owners Club

Pete Bags wrote: ↑Sat May 21, 2022 5:28 pm Gearbox capacity is 2.25 pints, so just under 1.3 litres.

Two bottles of MT90 should do it then? Think I’ll go down that route, hoping it should last longer than changing an older oil more regularly.

Well that would explain why I was struggling to get past 50mph! & also the plugs sooting up all the time which I thought was down to a carburettor problem but may in fact have been tight valve clearances instead. Doh!!!! I’ll get it out for a drive & see how she goes now the valve clearances...

The valves were tight, now have them at 15 thou.

What would be the consequences of tight valve clearances? The engine having to work harder?

Apologies for all the questions, amateur mechanic here so I’m learning as I go!

Haven’t done a compression test but I will. One thing I will say is the car starts incredibly easy, like first turn. which makes me rule out a compression problem. But I may be wrong.

As for the valves, should I set them at 12 thou or 15 thou?

Ah yes, I’ve read the link. I turned the wheel Two full turns, the diff turned 4 & abit so I take it to be a 4.2 diff. Must be something else odd or else I just think the car is revving a lot. I’ve drove my sisters traveller before & it doesn’t have the same issue cruising at 55 but then it’...

So I jacked the car up. Prop only turned twice & a quarter for one rotation of the wheel. That can’t be right!?

As others have said, there is something wrong with your set-up if it is struggling to reach and maintain 50mph. A well serviced 948 in anything like good condition is a very driveable little car and a delight on the road. Not fast of course but should indeed cruise happily at 50 - 60mph. I find the...

12g202 head Fully reconditioned Unleaded seats Double springs Skimmed 40 Compression raised 9.8 - 10.1 My dad set the ignition as he worked on mini’s back in the day, now to say how accurate it is would be another question lol The carburettor was giving me trouble running rich all the time. I put th...

Is there any handy way of finding out what diff I have other than taking it out?

There’s a larger cylinder head on it, everything else is stock (far as I’m aware) . H2 carb & stock exhaust.

I’ve been tinkering at it myself but I might just get the mechanic to give it a once over.

I don’t know the exact Rev’s as I’ve no rev counter, but yeah a car from that era is going to be a lot nosier than a modern car. It just feels like I’m ringing it’s neck to get to 50mph.

My car struggles to get to 50mph & seems quite high revving at that. Hardly normal that is it? I’d of thought it would do 50mph effortlessly

What diff comes in a pickup? As I can get my hands on one but maybe it’d be no different.

Nearly ten thousand miles ago, I switched to Redline MT90 fully synthetic in my bog standard ribbed gear box after the advice of a very experience automotive engineer. It contains all the protective elements required, and changing gear is now like the proverbial 'hot knife through butter' - it's ju...

Thanks

What oil should I put in my gearbox?

Ok thanks. I’m pretty new to Morris minors so I’m learning as I go.

I’ve noticed there’s no overflow in the float chamber on my H2, should there be?

Just another question. When they say H2 “paper filter” what do they mean by that? Is there a filter in the carb? Or are they referring to the air filter?

Ok thanks for the help.

I guess it will take some trial & error to get it right as you say I’m not running a standard 948 head.

The cylinder head fitted is as follows 12g202 cylinder head Fully reconditioned Unleaded seats Double springs Skimmed 40 thou Raised compression from 9.8-10.1 This was recommended to my by MCCS Engineering as they build beautiful A series engines. The same head is used in their 948cc sport package e...

1958 Morris Minor 948cc with AUC 888 Carb. 948cc with an upgraded cylinder head polished & ported. Car has been running rich & running through petrol at a serious rate. Tried to adjust it but the plugs still soot up. Is this carb up to the task with an upgraded head or should I put a larger ...

So my 948cc has been running very rich & sooting up the plugs. My carb is the AUC 6070. Float valve not sticking, choke not sticking, needle fine, even when I adjust the jet right in & only open it slightly it still runs rich. Can’t figure it out.

Any ideas???