Help needed, Loosing faith!!!

[MattF]

I am supsrised about the stat comment/theory's how ever, im not 1 to say who is right and wrong as we are always learning.

How ever it has always been a belief of mine that it will help keep it cool, My father (also a mechanic runs his garage blah blah etc) said the exact same thing, as did all 3 of the other mechanics i work with. All said they would have tried that and couldnt see the issue, how ever every vehicle has its niggles/difference's im just in a bad mood in genereal

They're wrong. And it isn't in any way related to niggles or differences between vehicle or manufacture types. It is a basic generic rule across all auto engines which use a thermostat. They don't incorporate a thermostat just to kill half an hour whilst they are designing the vehicle. It is there for a very good reason.
That isn't to say a standard cooling system cannot be improved. It can, as they are obviously designed either to a budget or to best match a broad range of scenarios. That will always means they can be improved upon. Removing the 'stat is most definitely not the way to achieve that aim, however.

Engine too cool, runs like sh1te and excessive wear. Engine too hot, runs like sh1te, excessive wear and other possible failure scenarios.

Repeating a wrong does not make it a right. Whether they like it or not, the other mechanics and yourself are working upon a completely incorrect assumption that removal of the 'stat aids engine cooling. It does not. It can cause far more problems than it will ever cure.

With regards to your comparisons to race engines and the Surf, btw, they bear no relation whatsoever. The requirements and expectations for a race engine fall way outside of any expectations or requirements one would have for a domestic vehicle.

Please don't put K-seal in your engine. It will take forever to get it back out again once it's clogged everything up.

I'll definitely second that opinion. Any leaks should be isolated and repaired. Shoving something in which has the potential to clog any part of your coolant system it desires is most definitely not the method to use.

[MattF]

and Matt I am soooooo jelous of your 'grumpy b0locks'

Taken years of giving hard abuse, (apologies, advice), achieving that has.

[Daz81]

New stat was fitted this morning, system was flushed, a bit dirty but genereally not bad. same scenario after roughly 10-15 mins of driving it over heats, it is filling the overflow bottle to the point that over flowing thus loosing water? and i think this is where the over heating is coming from lack of coolant.

SO,

Does this sound like a didgy water pump? I have 1 on oder and am hoping for it to be hear monday. But these symptoms dont point to the WP, well not from my eyes any way, the WP is the last part of the cooling system that hasnt been replaced.

Every other part has been replaced with an oem or good spec part.


To recap.

New Toyota head gasket + head kit.
New Head bolts
Recon head.
New radiator
New Toyota Stat.
New timing belt + all ancilaries.
Fresh coolant every time (Morris blue 50/50 mix)

I get hot air in the Car, the temp gauge sits at roughly 1/3-1/2 for roughly 15 mins then slowly rises up to the red, i havent let it get that far and ave stopped let it cool and then refill with water each time.

[MattF]

If coolant isn't being pumped correctly, then yes, that could be causing the problem. That is why the pump should be replaced at the same time as the head, to prevent the possibility of damaging the new head.

The only other possibility that there may be that I can think of, if the problem still persists after replacing the pump, would be a warped/cracked block, but I wouldn't start worrying about that possibility unless replacing the pump makes no difference.

[fatfires]

Taken years of giving hard abuse, (apologies, advice), achieving that has.

good advice given above, well put......but I mansged it in only 4 words!!

[Daz81]

we have done a pressure test and can find not indication of cracked head/block, and my machine shop checked the head for the same.

New water pump on monday fingers crossed.

Thank you for all the help very much appreciated.

[Vagrant No2]

New stat was fitted this morning, system was flushed, a bit dirty but genereally not bad. same scenario after roughly 10-15 mins of driving it over heats, it is filling the overflow bottle to the point that over flowing thus loosing water? and i think this is where the over heating is coming from lack of coolant.

SO,

Does this sound like a didgy water pump? I have 1 on oder and am hoping for it to be hear monday. But these symptoms dont point to the WP, well not from my eyes any way, the WP is the last part of the cooling system that hasnt been replaced.

Every other part has been replaced with an oem or good spec part.


To recap.

New Toyota head gasket + head kit.
New Head bolts
Recon head.
New radiator
New Toyota Stat.
New timing belt + all ancilaries.
Fresh coolant every time (Morris blue 50/50 mix)

I get hot air in the Car, the temp gauge sits at roughly 1/3-1/2 for roughly 15 mins then slowly rises up to the red, i havent let it get that far and ave stopped let it cool and then refill with water each time.

Have you checked to see if the thermo viscuos fan is locking in at high temp ?

[MattF]

Have you checked to see if the thermo viscuos fan is locking in at high temp ?

Good catch Rick. Had overlooked that one.

[mud skipper]

viscous fan, rad flow and have heard of the blades slipping on the wp shaft,
junk the 2.4 auto rad and get a manual rad in thee with an aux oil cooler
well thats my 2peneth worth
or get a 3 lrt 3 gen= end of probs

[Sancho]

Oh, one more. Is your crankshaft pulley OK? Mine debonded on me, slipped and drove the pump slower - hence overheating and another cracked head.

It goes 'eek eek eek eek' when it's fvkced.

[Daz81]

Well my worst fear happened after work, took the old water pump off and it lokos fine, so good in fact it looks almost new, and the stamp on it says 03/07 so at the most its just over a year old

It doesnt have any corrosion on the blades or any issues at all by the looks of it

Ive fitted the new 1 but didnt get chance to finish it all tonight, so will test it tomorrow.

I really hope this sorts the problem, if not I will have to sell it, whixh is a shame i just cant afford any more time or money, im going to make a loss either way.

[Daz81]

OK new pump fitted, and I also fitted a spanking new Cap,

The cap seems to be holding alot more pressure than previosly, the top hose after a short drive is solid which it wasnt before, i am going to go for decent drive later and see how hot it gets.

I took the matrix hose of and filled it with water from there just to try and get as much air from the system, (what with the hose being higher up than the rad cap)

It seemed to heat up to temp fine etc,

Cant for sure say wether its working fine or not yet.

I am considering selling it though as i dont want the worry of it breaking haning over me.

I will give a more detailed run down later after a drive.

Daz

[BushBuster]

So whats the outcome? did a replacement pump work? or was the cap?

[Daz81]

well it doesnt over heat as quick, now, but with the new cap on it retaining pressure, SO much so infact that it split 1 of the smaller pipes that connect to the stat housing,

On the motor way less than 10 miles from my house, the temp gauge was 1/2 way and then i noticed a trail of water in the mirror, pulled over, low and behold, spilt water pipe, so a quick bodge on the motorway topedup with water and managed to limp back to my dads workshop,

Replaced the section of pipe, checked all other parts, went for a short drive and the the top hose from rad to stat husing is solid, to the point of balloning.

So after all this money it looks like either a cracked head or block is pressurising the system.

Fruking typical, i have to say im in a bad position, I had a buyer come and look this afternoon, they test drove it, and loved it, and left a deposit for it, i made them fully aware that we have done a head gasket and of all the parts replaced, except if it breaks down/over heats on there way home im going to feel like an arse. I am not the 1 to sell dodgy cars. GRRRR,

So short of torching it im stuck now, i am broke, i still dont have a reliable, daily useably vehicle.

Idea's

Whats it worth in spares? its just got 1 years MOT on it aswell.

[MattF]

Fruking typical, i have to say im in a bad position, I had a buyer come and look this afternoon, they test drove it, and loved it, and left a deposit for it, i made them fully aware that we have done a head gasket and of all the parts replaced, except if it breaks down/over heats on there way home im going to feel like an arse. I am not the 1 to sell dodgy cars. GRRRR,

Imagine how p1ssed off they'll feel if they're driving a vehicle home and it goes when they were told it has had the overheating issues and head sorted. If you don't like selling dodgy vehicles, phone them and advise them of the fact.