Mayo in cap, but head gaskets ok ?
Turbo Mini Forums

Made it home from glasgow, just! broke down at two roundabouts i think just down to the tuning being really poor.

basically wheni got home i looked under the ifller cap to find mayo. I made it a 3 hour drive back from glasgow at slow speeds, the water hasnt gone down in the radiator at all. The fuel pressure is 3.5 bang on from the regulator, could the tuning be letting fuel in too much, and that making mayo with the oil? is that possible?

Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
Previous engine: STD metro turbo, megajolt
Drives: 399bananahp (flywheel) Honda Civic Vtec b18c4 T28 Turbo 1968 Mini

Megajolt maps to download: http://www.jamesfawcett.co.uk/cms/index.ph...&gid=3&Itemid=3

its from using the car for many short journeys where the engine doesnt get chance to warm up properly

change and flush it and do the filter

my step dads mini does when he just uses to pop to and from work (7mins)

totally agree, make sure you have a hot thermo stat at least a 82 deg with out any holes in, and keep the heater tap open for cuirculation.
cold oil will soon turn into mayo if it doesnt get hot enough to evaporate the condensation build up from the oil.

every one seems to talk about mayo this time of year must be due to the lack of snow lol.!!!!!

always looking for them bigger bunches of bannanas

Yep i have the same problem and i've found if i cover the oil cooler with foil it helps loads...

Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe.

yep mine still does this? head gasket has been changed, oil has been changed twice! and still i get mayo in the cap?

i drive 15 miles to work which i would have thought would be far enough to warm things up properly?

although saying that the temp guage hardly moves and the heater produces luke warm air at its best!!!

““A turbo: exhaust gasses go into the turbocharger and spin it, witchcraft happens and you go faster.”” - Jeremy Clarkson

you got to make sure you get your engine and oil hot enough. this drives of both moisture and hydrocarbons from your oil.

On our turbo cars i'd stronly suggest you fit an accurate oil and water temp gauge to see exactly whats its doing.

I would not recommend not running a thermostat in a road car either. Its fine on a race car as you tape of the radiator to ensure correct running temp, but this is not practicle on the road.

I'd say you most likely need some or all your oil cooler blanked of in cold temps as well.

Thats great advice, ill use a bypass pipe for my oil cooler for the time being

Previous Engine: 1040cc Morespeed engine, 1275 turbo head T2 Turbo Mirage Manifolds Megajolt
Previous engine: STD metro turbo, megajolt
Drives: 399bananahp (flywheel) Honda Civic Vtec b18c4 T28 Turbo 1968 Mini

Megajolt maps to download: http://www.jamesfawcett.co.uk/cms/index.ph...&gid=3&Itemid=3

yep you shouldnt need a oil cooler in this weather, try fiiting a oil temp sender as well to give accurate oil temp readings, most people would be suprised how long oil temp even in a turbo car takes to heat up.
my NA 1380 at 4000rpm would take 20-30 miles to reach 90 deg c and thats with out a oil cooler.

engine temps need to be atleast 80 deg and above to stop the mayo forming.

always looking for them bigger bunches of bannanas