7 replies to this topic

[ryomini]

Hallo again

I'm a noob here and posted a short hello in the intro section

my bog standard mayfair 1.3i from 2000 has been drinking about a litre of oil a month

and I haven't been driving hard

did a compression check and they give out 190 psi per cylinder so looks ok there

did the valves but the haynes manual i have said around 0.04 - 0.08mm on ins and exs

so I set all the valves at 0.06mm and car is running ok

BUT I would like to get the exact VALVE spec for the 2000 1.3 mayfair injection
if someone can give it to me and in mm if you please

anyway a big hello to you all from Hiroshima japan

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[L400RAS]

Hi,

Your quote of the Hayne smanual of 0.04-0.08 is WAY too small - you must have mis-read / mis-typed it:

The Haynes manual quotes
Valve clearances
Inlet and exhaust (engine cold):
All engine types except 12A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.30 mm
12A engines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.33 to 0.38 mm

The Rover workshop manual from November 1998 states 0.30mm.

[Cooperman]

0.012" inlet
0.015" exhaust

[bmcecosse]

Or if you must be metric, 0.3mm inlets and 0.4mm exhausts. But it won't have any effect on oil consumption.... The compressions you quote are extraordinarily high for a road engine ! How did you take the readings?

[maccers]

How does one know what the inlet and what the exhaust valve is? I need to set the gap, and was going to follow the Haynes book and set them all the same, however if it makes a difference I'll go with 0.3 and 0.4, but how to tell?

[Cooperman]

The valve sequence is:
1 ex,
2 & 3 in,
4 & 5 ex,
6 & 7 in,
8 ex.

[ryomini]

Oops,

seems like I forgot about this post but I misstyped anyways

as others said the valve clearance in general is 0.30mm for those of us who prefer metric, a little loose on the ex valves is supposed to be better (as someone else said 0.40mm ex)

and better late than never, I got the compression readings using a gunson compression tester and  just turning over each cylinder a couple of times ( I forget now but you have to make sure that something is disconected so as not to do any electrical damage, I think I disconected the distributor but it was  a while ago now so.....

[Cooperman]

To check compressions remove the plugs, and disconnect the ignition lead from distributor to coil.

Plug the compression tester into cylinder no.1, open the throttle fully and crank the engine for 5 seconds. Take the reading.

Repeat for the other 3 cylinders.

Do this when the engine is still warm.