inlet/exhaust valves
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- Minor Fan
- Posts: 161
- Joined: Wed Apr 29, 2009 12:15 am
- Location: Felixstowe
- MMOC Member: No
inlet/exhaust valves
Can anyone tell me how I can identify which valve in each pair is the inlet and which is the exhaust?
I'm adjusting the gaps to 12/15 respectively but I'm not sure which is which!
I'm adjusting the gaps to 12/15 respectively but I'm not sure which is which!
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- Minor Addict
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Re: inlet/exhaust valves
1 exhaust
2 inlet
3 inlet
4 exhaust
5 exhaust
6 inlet
7 inlet
8 exhaust
2 inlet
3 inlet
4 exhaust
5 exhaust
6 inlet
7 inlet
8 exhaust
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- Minor Fan
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Re: inlet/exhaust valves
Brilliant - thanks very much.
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- Minor Maniac
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Re: inlet/exhaust valves
yes thanks ane are they set cold or hot
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- Minor Fan
- Posts: 161
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Re: inlet/exhaust valves
What a fool I am - I could have looked at where the manifolds were connected.
Re: inlet/exhaust valves
You can set either hot or cold. Morris recommends .012" for both cold and add .001" if doing them hot. General concensus now for running on unleaded fuel is to set inlets to .012" and exhaust to .015" cold - still add the .001" if doing them hot.
[sig]8426[/sig]
Compare the Minors - Simples !! http://mog.myfreeforum.org/index.php
Compare the Minors - Simples !! http://mog.myfreeforum.org/index.php
Re: inlet/exhaust valves
Doesn't make any odds - when hot - both head and valve stem (and push rod etc) will have expanded slightly - so within the limits the same gaps apply! In this weather - HOT will keep your fingers from freezing together - maybe.



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- Series MM Registrar
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Re: inlet/exhaust valves
There is a plate on the side valve engine which says Set Tappets to .018 Hot.
To set the tappets you have to remove the air filter, undo the carb cables, undo the exhaust bolts and drop the front pipe, undo the manifold bolts and remove the manifold and carb, remove the breather pipe and oil pressure pipe and then remove the tappet chest cover, by which time the engine is cold!!!!
You then have the job of hanging upside down with three spanners and a feeler gauge trying to set the tappets
To set the tappets you have to remove the air filter, undo the carb cables, undo the exhaust bolts and drop the front pipe, undo the manifold bolts and remove the manifold and carb, remove the breather pipe and oil pressure pipe and then remove the tappet chest cover, by which time the engine is cold!!!!
You then have the job of hanging upside down with three spanners and a feeler gauge trying to set the tappets

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Re: inlet/exhaust valves
Ahh - that's progress for you - my Morris 8E (same engine) had a handy plate in the inner wing which could be removed to give access! Still a hellish job though! Don't see why you could make a similar opening in the inner wing of a Minor - but wouldn't be 'original' I suppose!



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- Series MM Registrar
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Re: inlet/exhaust valves
The top suspension arm would get in the way. Anyway, if the tappets are tightened up properly before the engine is fitted the should very rarely need adjusting.
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- Minor Legend
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Re: inlet/exhaust valves
Hi Mike
I am in the process of deciding whether to fix a harness from the garage rafters to suspend either myself or the MM to make the job a little easier

I am in the process of deciding whether to fix a harness from the garage rafters to suspend either myself or the MM to make the job a little easier

