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Omega General Help / Re: thermostat pipe
« on: 25 May 2017, 22:55:33 »
I just replaced original thermostat housing with a first line one and flanges exactly same thickness so no need to apply washers or shorten thread on bolt
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Really first person .. sorted it anyways now cheers ...
Anyone know a lower fan switch so fans cut in sooner
Very few people consider saving a couple of quid by buying just the thermostat(and not the housing) worthwhile.
Your local factors will have a book(or screen ) listing the thread size and switching temperatures of their supplier's switches. You then pick one that will screw into your housing, and switches on(and off, which is probably the one to play with) when you want.
But seriously, what are you trying to achieve here? The stock Omega fans switch in and out seamlessly at about 100C, which seems pretty good to me. If yours are doing that, but the car is overheating(and that means venting coolant) then you should fix the cause, not fudge it with a fan that runs more often.
I bought the stiffest polyurethane I could find.
The fixture I made to hold the parts together is a bit excessive, but it does make doing both mounts simultaneously much easier. Now the worst part of the job is removing all the old rubber.
and a completed mount:
Ok, let it cool, top up to cold mark with 50:50 antifreeze, then see what happens
When cap removed when hot, expansion causes coolant level to rise in a pressurised system like Omega.
To OP, you have a leak if you have to repeatably top up. End of.