1991 hilux/surf import

[logman65]

can anybody give me a idea y my 1991 hilux surf keeps overheating and blowing the water out of the headertank have just rebuilt the topend could it be a crack in the water way thanks logman65

[greecysurf]

can anybody give me a idea y my 1991 hilux surf keeps overheating and blowing the water out of the headertank have just rebuilt the topend could it be a crack in the water way thanks logman65

Could be a couple of things, airlock in the cooling system, or head problems causing the cooling system to presurise, when you say overheat, how bad is it, how much water comes out, is there any oil in the water,
Need more information about exactly what happens.

[logman65]

overheating

boilsup going up hill no oil in water fills up headertank and then over flows temp gauge in red

[greecysurf]

boilsup going up hill no oil in water fills up headertank and then over flows temp gauge in red

So basically when it has to work the engine overheats, could be thermostat,
take it out and boil a kettle, pour water into a jug and put the thermostat in, see if it opens.
If not then replace, do a search on here and there is a thread on how to burp the system, next to check is the water pump, behind cam belt cover, if this is alright, then it is probaly head gasket, did you use genuine parts,
are the head bolts torqued correctly, did you use new bolts, need more info on exactly what you did when you rebuilt the topend.

[logman65]

cambelt cover

has any one got a cambelt cover for sale for a 1991 hilux/surf ln130 td thanks

[stormforce]

If you mean the rocker cover then i should have one at the workshop for a 2.4.What you willing to pay for it

[dannymac]

The header tank isnt a regular header tank,the cap is a two way,allowing water to flow back and forth from the cooling system,allowing expansion.Thats why,sometimes the plastic tank is near empty,othertimes its near full.Try changing the cap.They stop working sometimes.