well my friend has a 13-b off a cosmo it has around 60,000 miles never rebulid.
and the problem is that is heats up too much and really fast he changed the water pump the thermo control and the seals but nothing its still overheating????

can anyone help me please?

 

We need more info, Mods, What year?, Rad type?, Fans?

 

it a 1986 fc it has a t66 turbo with like 1600cc fuel injectors electric fans koyo radiator i think.

 

my bad its a 1987 with a 13b off a cosmo re elctric fans koyo radiator t66 turbo primary fuel infector is 550cc and secondary is 1600cc changed radiator caps thrmo control and water pump and seals as well.all so front mount intercooler.
it runs really hott whenever u hit the gas it heats up fast it goes from 189 to 205.

 

Does it have the undertray, How big of a electric fan? Is there a IC in the front of the Rad.

If there is a IC that was custom built, then you must make sure that all the air that is being pushed into the mouth of the car is going thru the IC,Oil Cooler, Rad. Duct work is important!!!!

Then if the fan is too small it will not pull enuff air to cool the motor at low speeds, but at hight speeds the amount of air even without a fan should keep the motor cool.

Does he have a Underdrive kit on the Waterpump

 

Did you change the thermostat or the Thermopellet inside the eshaft. The thermostate needs to be a MAZDA ONE, this is about the only part that needs to be OEM

Is the Oil Cooler dirty, messed up fins, you remove about 35-45% of the motors total heat from the oil


O yea before anyone jumps on you, you posted this in the wrong section this is a General Rotary Problem

 

well can i tell u tomorow cuz i really dont know i drive an sr20 super simple hahah!
but ill ask him tomorow sorry about that i didnt exspect any reply untill tommorow.sorry but damn u know ur stuff!A++++++++++

 

Yea i lurk the forums at night, picking up the help me posts.

 

whats an ic and a undertray?

what are they for?

 

IC = Intercooler
Undertray = Plastic part under the front rad area that make the air move thru the Radiator instead of going around it.