Cylinder Head Check
Forum rules
By using this site, you agree to our rules. Please see: Terms of Use
By using this site, you agree to our rules. Please see: Terms of Use
Cylinder Head Check
I am just in the process of replacing my cylinder head gasket, the head was fitted from an unleaded mini about 10 months ago and there was always a slight oil leak from the head to block joint, which has suddenly got worse the engine nearly loosing all its oil on a 70 mile journey. Usually the engine only used a pint every 700 miles or so. As I don't know the history of this head is there an easy way to tell if the head surface is true and flat. before I refit the head?
-
Alec
- Minor Legend
- Posts: 2148
- Joined: Thu Apr 15, 2004 7:29 am
- Location: Oswestry, Shropshire
- MMOC Member: No
RE: Cylinder Head Check
Hello John,
if you have a steel ruler and a set of feeler gauges you can check the face for flatness.
I would say no more than 4 thou gap (0.1mm)over the full length.
Alec
if you have a steel ruler and a set of feeler gauges you can check the face for flatness.
I would say no more than 4 thou gap (0.1mm)over the full length.
Alec
-
Kevin
- Moderator
- Posts: 7592
- Joined: Thu Feb 14, 2002 12:00 am
- Location: Watford, Hertfordshire.
- MMOC Member: No
RE: Cylinder Head Check
Or a piece of glass with a small smear of engineer blue on it.
Cheers
Kevin
Lovejoy 1968 Smoke Grey Traveller (gone to a new home after13 years)
Herts Branch Member
Moderator MMOC 44706
Kevin
Lovejoy 1968 Smoke Grey Traveller (gone to a new home after13 years)
Herts Branch Member
Moderator MMOC 44706
-
rayofleamington
- Moderator
- Posts: 7679
- Joined: Fri Nov 01, 2002 2:55 pm
- Location: LEAMINGTON SPA
- MMOC Member: No
RE: Cylinder Head Check
Don't use old glass though! It won't be flat (it sags)
Ray. MMOC#47368. Forum moderator.
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
Jan 06: The Minor SII Africa adventure: http://www.minor-detour.com
Oct 06: back from Dresden with my Trabant 601 Kombi
Jan 07: back from a month thru North Africa (via Timbuktu) in a S3 Landy
June 07 - back from Zwickau Trabi Treffen
Aug 07 & Aug 08 - back from the Lands End to Orkney in 71 pickup
Sept 2010 - finally gave up breaking down in a SII Landy...
where to break down next?
2013... managed to seize my 1275 just by driving it round the block
-
Kevin
- Moderator
- Posts: 7592
- Joined: Thu Feb 14, 2002 12:00 am
- Location: Watford, Hertfordshire.
- MMOC Member: No
RE: Cylinder Head Check
Right of course Ray I should also have said plate or float glass is best
Cheers
Kevin
Lovejoy 1968 Smoke Grey Traveller (gone to a new home after13 years)
Herts Branch Member
Moderator MMOC 44706
Kevin
Lovejoy 1968 Smoke Grey Traveller (gone to a new home after13 years)
Herts Branch Member
Moderator MMOC 44706
RE: Cylinder Head Check
If the head was fom a 998 Mini the inlet valves and the ports are smaller - you will be losing power ! Wanderinstar on here has a 12g206 head (extra big inlet valves) for sale - ideal for your engine (although a 60 thou skim will make it even better) - but not unleaded. Don't worry about it - It will be good for many many miles of motoring - especially if you stick in the exhaust valves from the Mini head !!
