New Member 1970 BGT

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Joined: Mon Mar 16, 2020 5:58 pm

New Member 1970 BGT

Post by wolseleyphill » Mon Mar 16, 2020 7:33 pm


Thought I'd take a moment to introduce myself. I am a new MGB owner based in East Sussex, though not new to classic vehicle ownership.

In my day job I work for a firm who restore vintage aircraft, generally based in the engine overhaul shop and specializing in magnetos/ignition, though I'll often be found machining, painting etc... I started tinkering at about 14 years old with stationary engines, a hobby I enjoy to this day.

I have been running a Series Land Rover since I was a teenager and learnt a bit about vehicle maintenance and repair whilst going through it's complete mechanical overhaul. After seven years of ownership, I decided it was time for something with a little more punch but retaining the classic vehicle "charms"! I've had a succession of modern motors along side the Landy and just not got on with them - dull as dishwater, laptop required and I can't tinker..

After some months of looking, I purchased a tidy 1970 GT a few weeks ago. A very solid older restoration, completed some time in the early 90's. It seems the car had a replacement Gold seal engine about 10k miles ago and it seems to run very cleanly - I have never seen such clean plugs in an old engine!

Initially the car wasn't running particularly well with unpleasant misfiring and hesitancy at fixed throttle settings and on gentle acceleration, barely outpacing the Land Rover on the way home.. it broke down on me third time out, the fuel admittance valve in the second carb' having unscrewed it'self - first causing weak running, then a rich cut as the rear two cylinders were flooded! Fortunately, I fixed it at the side of the road and still made my lunch date..

Having experience similar misfires before, it felt very much like an ignition problem and so I pulled the distributor for a look. I found the advance mechanism to have seized solid and the static timing had been set way back at 20 degrees BTDC. Inside I found an ancient Pertronix igniter kit with quite a few breaks in the wires. A thorough overhaul of the distributor, red rotor, new coil, leads and a new Pertronix unit saw a vast improvement in the running. The car now feels like a sports car and pulls up the steepest of hills in overdrive top - the misfiring at fixed throttle settings has gone now but it is still a little hesitant unless given a good boot. I tinkered with the carbs this evening, "turning up the wicks" and using the damper test buttons - will see how it goes tomorrow...

So that's where it is at the moment - the car has obviously just been someones weekend plaything for many years so I'm finding loads of small jobs to do, but it's a very tight drive and the handling is delightful on a twisty country road. It appears to have always been garaged and has a huge history file with lots of recent works to the suspension and brakes.

I'll no doubt have plenty of questions but hope to be able to contribute to the forum in time, I've attached a few photos of the car.

kind regards,

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89998391_2980315765369386_7056209389870383104_o.jpg (63.59 KiB) Viewed 1387 times

Posts: 53
Joined: Wed Jul 05, 2017 11:41 am

Re: New Member 1970 BGT

Post by Not_Anumber » Fri May 01, 2020 3:37 pm

You have a great looking BGT there. It is a very sensible choice after owning a landrover for several years. The MG is a simple car that is a delight to work on and greatly benefits from a good source of new and second hand spares. Seeing a nicely sorted BGT does make me want to get back onto working on my 1979 RB.

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