How about anti-freeze mixture?, my car was always loosing water until I
got the correct mixture in.
>----------
>From: James D. Howard II[SMTP:jhoward@argus.lowell.edu]
>Sent: Monday, September 30, 1996 10:32 AM
>To: MG list
>Subject: Overheating caused by timing problems?
>
>
>Vehicle in question: 1967 MGB/GT
>Problem: Overheating. Temp gauge reads normal when ambient temp is below
>80F, but rises to 212 when sitting in traffic or travelling over 65 mph
>if the ambient is 81F.
>
>Things done: Flush and fill radiator, new thermostat, took out old
>radiator to have it rodded, found it cheaper to buy a new radiator from
>Moss. Still overheats. New water pump. Checked timing, mixture. Carbs
>needed rebuilding, so I did. Still overheats. Check temperature gauge
>with a calibrated thermometer - it is good to within 3F. Noticed there is
>a flat spot on acceleration, so check mechanical advance. None present.
>Pull distributor. Springs are different than the ones in my spare. Check
>serial number - not an MGB distributor. So, I put spare distributor in,
>which is for an MGB. Mechanical advance works, vacuum advance works.
>Still overheats.
>
>The only things I can think of now are:
>
>mechanical advance curve not correct
>blockage in the water galleries
>timing marks are wrong
>
>Are there specs somewhere on what the timing curve should be?
>
>James Howard
>Flagstaff, AZ
>
>
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