No clue what to do, My 120y keeps overheating.. and its getting worse =\ .. stays at normal temp for a good 10-15minutes then goes from half way to near the max temp line.... (cold/hot day dosen't matter but worse on hot days)

here is what I have done so far:

New head gasket
New Thermostat
New waterpump
Flushed coolant like 1982429753238795 times (stil crap in radiator.)
Valve timing
silicone hoses

Next thing I'm going to do is replace the Radiator and temp sensor... but what is everyone elses thoughts?

Btw the car runs perfect!

Anthh

Is it actually overheating ?
Alot of multimeters come with a thermal probe ? can get cheap infra red thermometer from fleabay - I have one - works ok

http://www.ebay.com.au/itm/Digital-No ... 3b70fd:g:fzsAAOSw4GVYOOLr

Sounds as though you're reasonably handy with the spanners having replaced head gasket
so I assume You've checked if the waterpump is actually pumping good flow through the radiator?
IE: Run it with the radiator cap off and see if swirling through the top of the radiator after the thermostat opens?

Quote:

Disregard everything I wrote here - just read your 120y story

I second trying to find the cause. A digital thermometer will tell you more, I bought mine for $12 from Harbour Freight china shop, point it at cylinder head and see what actual temp it

Sometime gauge reads towards Hot while engine is not actually running hot

But most often this caused by the radiator or thermostat and not by the engine (head gasket/timing/water pump can be a problem, but is less likely). You can test the radiator and thermostat for no cost. See our tech article: Temperature Tests

Bought a new aluminium 3 core radiator today and it solved all my issues :)

Picked it up for $139 at there warehouse @ Roadstar Automotive in Hornsby heights!

http://stores.ebay.com.au/ROADSTAR-AUTOPARTS

They also have stainless steel header for $199 ! im buying one next week!.. but they don't advertise it on ebay
They only have like 4 headers left

They also have electric Dizzy for $79 from memory

Good price, and 3-rows indicates it should cool better than new stock radiator

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I had similar problem and replaced everything, pump , thermo , had it flushed etc. Except radiator cap and that was problem .... It did not really over heat just ran really high . You say engine is running fine , so not the timing and wrong plugs

temperature isn't going past half way now lol. :)

well worth the moneys.

Those Ali fleabay radiators work a treat. On the 1200 you either have to space it out by 6mm, or lift the holes 6mm to make it fit - no big problem for the gain
Did you have to do it on the b210?

Top bolts fit 100%

I haven't got any bottem bolts in, for the moment i have cable tied them till I get to work then I need to move the holes to suit on the bottem