Go to footer

Over heating Issues

All your technical, mechanical, electrical, exterior, interior, I.C.E. and even baby seat questions go in here. We've a lot of Mini gurus on the forum who'll be glad to help out with whatever technical probllems your Mini is having, or if you'd like to upgrade/modify yours we'll try to help too.

Moderator: MiniMpi


Over heating Issues

Postby Niallo2826 » Thu Jun 28, 2018 9:18 pm

Cooper S went for NCT today in 31c! It overheated half way through the test when the coolant almost exploded from the expansion tank. Let it cool down and filled it back up and after a bit of driving same thing happened again down the road. Otherwise it's running perfectly and has been up until today.

Thermostat or potential head gasket?

Engine temperature gauge is showing perfect temperature and hasn't moved beyond half way.
User avatar
Niallo2826
Just Joined!
 
Posts: 16
Joined: Tue Aug 06, 2013 4:16 pm
Location: Clontarf Dublin


Re: Over heating Issues

Postby irlmin » Sun Jul 01, 2018 7:40 pm

Niall,
Check the 2 stage cooling fan, they are notorious for causing the problem you mention . you will need to replace the fan and housing .the 'resistor' that fails is located in the housing. head gasket failure is not very common on the R53 . We get the odd rad leak , thermostat housing warping , and the very odd waterpump .My 1st place to check would be the fan .
G
Image
User avatar
irlmin
MCOI Founding Member
 
Posts: 5954
Joined: Thu Jan 01, 1970 1:00 am
Location: Peoples Republic of Cork


Re: Over heating Issues

Postby Niallo2826 » Fri Jul 06, 2018 10:33 pm

Thanks Ger. compression test and investigation proved head failure unfortunately so the engine rebuild has begun. Any suggestions for minors upgrades as open heart surgery is taking place?
User avatar
Niallo2826
Just Joined!
 
Posts: 16
Joined: Tue Aug 06, 2013 4:16 pm
Location: Clontarf Dublin


Re: Over heating Issues

Postby irlmin » Sun Jul 08, 2018 9:15 pm

Hi Niall ,
There is not a lot you can do mods wise while the head is off , 'Works' kit is very mild with just light porting on the heads and not worth the investment required , We have done lots of upgrades on R53 and the best value to power / torque is 15% pulley . Janspeed exhaust manifold , airbox mod and decent remap . will transform the car , much improved drivability and a decent increase in power and torque .
Image
User avatar
irlmin
MCOI Founding Member
 
Posts: 5954
Joined: Thu Jan 01, 1970 1:00 am
Location: Peoples Republic of Cork


Return to Board index

Return to Technical Questions and General Mini Help

Who is online

Users browsing this forum: No registered users and 5 guests