Morris Minor Owners Club

Thanks for the reply,
I know the larger exhaust valves can foul the block, but what is the biggest exhaust and inlet valve combination I can use without block mods.
Do you know if these heads use the bypass hose?.
And what's a A plus head are these better ?
Steve

Can any one tell which 12G940 head I should be looking for to fit my 1098cc engine, I've seen some on e bay,some older ones that look like they have the heater control valve ports,newer ones that don't or at least they don't seem to be drilled through, can these indeed be drilled. Later ones also ha...

Jaywhy, Thanks very much for your responce, I to had to remake my exhaust to manifold connection as well,so that done as well. I have no condenser as I'm using electronic points. Been out today to a classic car meeting and one chap said it may be worth changing the gaskets between the carb and the m...

Jaywhy,
You said you resealed your exhaust to the manifold ,do you mean you replaced the manifold gasket between head and manifold,is a leak in this area really going to result in a misfire!
Steve

Well took the moggy out for a spin with new t stat fitted and guess what it still misfired,after 15 miles I took of the new HT leads and put some old copper core leads on as someone said to me they had had a similar problem on a spitfire and as soon as he fitted copper core leads the problem went aw...

Just fitted a new 82 degree stat as its what I had,weather permitting I will try it tomorrow.
You say you hope I have changed the plugs,well I have but I fitted champion N5C not the N9Y you suggest, what's the deference ?

I've got direct wire from battery to coil and the negative side of the coil goes direct to the electronic points. Any way been out in the car this evening and true to form it missed for half the journey going,approx ten miles but never missed a beat coming back in the dark. It was quite cool tonight...

I'm still struggling with this intermitant miss fire,I have now got extra earth cable direct from battery to the engine and have just replaced the ignition switch for a new one and still it missfirers. This all started after the electronic points fitted by the previous owner failed,or at least that'...

Ive already fitted a new dizzy with points at first still no better now with electronic points so no condenser is fitted.

But thanks anyway.

Keep the ideas coming.

Tried the old coil and set my strobe light up so I could see it as I drove the car,unfortunately after a couple of miles the strobe light burnt out so I didn't get to see if the problem was ignition or not.but the principal was a good one !
True to form after another mile it started to miss fire.

bmcecosse wrote:It's NEVER the coil - as you have adequately proved by trying 3 with no improvement!

Now were have I heard that before.
Steve

I forgot to say I've tried three coils all ready one was brand new and the engine missed straight away,I have now got another old one on the engine I just bought bought.
Maybe I'll give that a try!
Steve

I have run the low tension wires direct from the battery,and made up an extra earth lead to the engine,I've even thought could it be a can follower sticking in the up position but I've not followed up on than one yet. This is driving me so mad I bought another engine the other day as a back up plan,...

Thanks for the replys so far. It feels like it cuts out for just a second then back in again,it can run for 15 mins ok then starts to miss and then just sudenly run ok,its getting worse now ive been trying to fix this for about three weeks now. I forgot to say I have changed the coil for one new one...

Hi,my first time on here,just joined the club. I have a miss fire problem with a 1098 engine,some times it runs ok then all of a suden misses,not back fire just seems like fuel starvation. At the monent I am seeing a lot of air bubbles coming through the fule line from the su pump to the carb,but th...