220v rebuilt engine runs too warm ?

[OrMar]

The spring side of the thermostat should sit in the block.

OK, but mechanic mentions some kind of arrow on the thermostat. Where should it point to (rotation-wise) ?

Thanks,
Mario

[OrMar]

Hate to say it but water out the expansion tank could be a head gasket issue. Seen it recently

Engine has been completely rebuilt, with all new gaskets and everything. That would be a really bad news.


Mario

[OrMar]

has the radiator been bled thoroughly? could be an air lock

I will tell him to bleed it completely again.

Mario

[220bhp]

Did you pressure test the head before you rebuilt it.

[OrMar]

Did you pressure test the head before you rebuilt it.

I had head rebuilt by the specialised shop with good reputation. Have no idea what they did. However, head wasn't causing any problems before .

Mario

[chezz]

OK, but mechanic mentions some kind of arrow on the thermostat. Where should it point to (rotation-wise) ?

Thanks,
Mario

The most imporant aspect of the thermostat installation is that you make sure the longest of the two halves of the stat(spring and shaft side), sits inside the block. The short rounded head should be visible. Rotation of the stat in the block means absolutely nothing to me, it is totally irrelevant as far as I know!
This is the side that receives the heat from the engine, yours is receiving very little if my theory is correct.
The absolute solution, in order to eliminate the thermostat, is to completely remove it!
Time scale - ten minutes. If the symptoms persist, then you have at least removed one component from your list of possible causes.
It is advisable to replace it later, due to the fact that even when it is fully opened, it plays an important, calculated role in restricting the flow of fluids.
I cannot begin to explain what kind of damage will occur if I am right. Please do not drive this car otherwise you will totally destroy the engine.

[Mikes2]

the arrow on the 'stat should point downwards vertically

[OrMar]

Just got a call from mechanic that he resolved temp issue; don't know yet what was causing it - I'm going to pick up a car at monday.

However, any thoughts on second issue:
"Also, with full throtle, after boost reach 0.5 bar, some ugly vibrations start and boost dances around 0.5 bar (I have separate boost gauge), few milimeters up and down. Is this surge/flutter/chatter or what, and what could be causing it ?
Could it happend that he connected something wrong ?"

?

Thanks, Mario

[chezz]

[QUOTE=Mikes2

Hate to say it but water out the expansion tank could be a head gasket issue. Seen it recently[/QUOTE]

Without doubt, the first casualty from an incorrectly installed thermostat - followed by a warped head, seized pistons etc.etc.
Heads gaskets do not fail without a good reason/cause. Excessive heat is the main reason(lack of or restriction of fluids/oil) for failures and a newly rebuilt engine should obviously be as good as the day it left the factory.
Is there an oil circulation issue?

[OrMar]

Without doubt, the first casualty from an incorrectly installed thermostat - followed by a warped head, seized pistons etc.etc.
Heads gaskets do not fail without a good reason/cause. Excessive heat is the main reason(lack of or restriction of fluids/oil) for failures and a newly rebuilt engine should obviously be as good as the day it left the factory.
Is there an oil circulation issue?

"Too hot running" seem to be resolved: it was a combination of 2 problems: plugged hose leading from expansion tank to radiator, and fan connectors mounted wrong, so it was turning in oposite direction.

I'm not aware of any oil circulation issue. However, I still don't have working oil pressure sensor in place, so I'm not sure.

New problem arrived just yesterday: power steering is not working any more (after we replace 1 front brake caliper) - also power steering fluid is leaking from reservoar cap.
Help, please.


Mario

[benky]

...New problem arrived just yesterday: power steering is not working any more (after we replace 1 front brake caliper) - also power steering fluid is leaking from reservoar cap.
Help, please.


Mario

...just to continue this thread

I'm new owner of this car. Why power steering fluid is leaking from reservoar cap? Another problem is power steering hose, at the junction the steering oil is leaking.

Does anyone know the function restrictor in the steering hose?(increase pressure or to reduce flow) What is its purpose? I'm considering to make new hose, but i'm wondering can it work without it. Thank you!
Benyamin

[benky]

little bump,...nobody know???