I think your head will be marked 168422?? Yes, 3/4" reach plugs. Also round
hole water holes, so use with banana head gasket to suit early TD/TC banana
block.
Original head to match the block is 22952 , banana water passages and 1/2"
reach plugs.
Bob Canada
-----Original Message-----
From: Mg-t [mailto:mg-t-bounces@autox.team.net] On Behalf Of Douglas Ormrod
Sent: Wednesday, November 02, 2016 9:33 PM
To: 'John Seim'; 'mg-t@autox.team.net'
Subject: Re: [Mg-t] Post winter TD blues
Hi John
The mist is clearing (it was 10 years ago when I put it together).
Just had a look at my head and it is stamped 68422.
But this is a Wosleley 4/44 head - my original which is a 22952 was cracked
so I used this one. WosleleyXPAW engines are much more common in NZ than TDs
so not uncommon to see this. My block is original to the car.
I have another Wosleley head which I have just measured and it is 3/4"reach
- so that is why I have the 3/4"plugs! Anyway from what people say the 7ES
is too cold so I will go back to the B5ES plugs.
Cheers
Douglas
-----Original Message-----
From: John Seim [mailto:kingseim@earthlink.net]
Sent: Wednesday, 2 November 2016 12:50 a.m.
To: Douglas Ormrod <Douglas.Ormrod@Neurological.org.nz>
Subject: Re: [Mg-t] Post winter TD blues
Spark plugs are too cold.
Go to NGK B6HS. Verify that the cylinder head has 22952 cast into it, top
right, front. Should be able to be seen, next to valve cover.
You either have a stuck needle to seat, or a sunken float, or both. Remove
float bowl. Observe needle drops. Spray carb cleaner at needle and seat
area. Remove float, shake, listen for fluid in float. Do same with other
float.
John Seim
Irvine, CA
USA
On Oct 31, 2016, at 6:21 PM, Douglas Ormrod wrote:
> Greetings from New Zealand
>
> Long-time no chat, but long-time no problems.
>
> My 51 TD has given very little trouble over the last 8 years, but now it
is.
>
> It has had very little use over the last six months, it was winter and I
must be getting soft. Perhaps 4 outing and 50 miles. Summer now here.
>
> Started OK at the weekend, but before I could take off it started running
very rough - sounds like down to three or two cylinders and backfiring
through muffler. Coaxed back into the garage on almost no power.
>
> Took out plugs (which were new six months ago) and they were covered in
soft black soot. New plugs are NKG B7ES, old ones were NKG B5ES. Cleaned
them up, also cleaned all distributer contacts, rotor contact, and took out
cleaned and reset the points. Checked cables for tightness. Started easily
and took it for a 10 mile run - apart from a little missing at first all
seemed fine once it warmed up. Power as normal.
>
> Decided to take it work today (sun out), but same scenario, started and
sounded OK, but after a few minutes ticking over started running very rough,
backfiring and power gone almost gone. Plugs all black and sooty again and a
couple of them quite wet.
>
> Only part of the ignition system that was not renewed at rebuild was the
lucas sports coil - I did have it checked at the time.
>
> So any suggestions as to the possible source of the problem?
>
> Thanks in anticipation of your collective wisdom.
>
> Douglas
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