Welcome to our resource for MG Car Information.
Austin-Healey 3000 - Spark Plug
|What spark plug is recommended for a '60 AH 3000?|
I've been running Champion RN12YC in my 61 3000, manufactured in 1960. Drove it 2150 miles round trip to the conclave in Grand Rapids, Mn last summer, great trip.
Are you a member of The Austin Healey club of America?
Great Club, lots of activities & fun.
Thanks for responding. I've been trying to figure out a minor run on problem with the car. It's lovely and runs great.
However, it likes to run on a bit when you switch the key off. I pulled the head, decoked it (no much build up though) and ground down the hot spots. The guy was running split fire plugs - maybe they are too hot. With the head off I see it's got high compression pistons (13K on rebuild) so it probably wants some hi octane gas. Difficult to figure out, I've checked the timing and carbs already. This is my first Healey.
No I'm not a member yet. I just picked up this car a couple of months ago.
Also, have a '58 MGA and I'm a member of NAMGAR.
I run only 92 octane, and use a lead additive as I did not have hardened valve seats installed. The only time I had any run on is when it was very hot outside, and the coolant temp was about 212degF after sitting in traffic. I installed a "Texas Cooler" plastic 6 blade fan last year. It runs quite a bit cooler now, especially when idling. One of the guys running in our group had his steel fan fracture and come apart on our trip last year.They tend to fatigue by the rivet holes.Fortunately, it did not damage his radiator. Then we heard of three other incidents, some with disastrous results, so I changed mine promptly. I asked about platinum tipped plugs a few years back, but I was told there is not one manufactured as a replacement for the Champion # specified. The split-fires may have been too hot as you said. Also, check your point gap. The stock pistons are flat topped. Comp ratio is 9:1 std. Slightly more of course if the head has been skimmed.
Welcome to the world of Big Healeys.You'll like it!
Nothing sounds like a Big Healey. It is distinct.
I also have a nice 76 MGB, which I drove to work today since it was sunny & relatively warm.Left the top up though.
This thread was discussed between 04/02/2002 and 09/02/2002
Austin-Healey 3000 index
This thread is from the archive. The Live Austin-Healey 3000 BBS is active now.