Does anyone know the valve clearances for 1275 MG metro engine please?
Thanks.
Mg Metro Valve Clearance
Started by
MIJ
, Jul 19 2018 03:44 PM
7 replies to this topic
#2
Dusky
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Posted 19 July 2018 - 04:23 PM
14 thou in, 17 thou ex valve.
Edited by Dusky, 19 July 2018 - 04:23 PM.
#3
A-Cell
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Posted 19 July 2018 - 04:23 PM
0.012 inch. 12 thou. Both inlet and exhaust.
#4
Mrpeanut
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Posted 19 July 2018 - 05:34 PM
Well that's cleared that up then ?
#5
Cooperman
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Posted 19 July 2018 - 06:11 PM
0.012" is OK for all A-series engines unless very high ratio rockers are fitted (like over 1.5:1)
For a valve stem to expand by even half of that amount would mean the engine is seriously overheated.
The issues with changes to valve opening time is not relevant as it is very slight.
#6
Spider
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Posted 19 July 2018 - 06:32 PM
All factory engines, Including the MG Metro, had 0.012" recommended clearances.
#7
racingbob
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Posted 19 July 2018 - 07:51 PM
mine are 14 and 17 I think vizard book
#8
Retroman
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Posted 20 July 2018 - 12:34 AM
According to the Haynes MG Metro manual ;
1982/3 inlet 13 exh 16
1985 on both 14
Compression is 10.5 :1
the Turbo is 9.4 : 1 compression with valves clearances 14/16 1982/3 and 13/15 '84 onwards
Both compressions are half a point higher than I thought, I will be checking next time I strip a std MG motor.
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