I'm a bit pissed.....180 deg thermostat. - Ford Focus Forum, Ford Focus ST Forum
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Old 09-08-2007, 12:03 AM   #1
loudfocus01
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I'm a bit pissed.....180 deg thermostat.

Well today, I decided to swap in the 180 degree thermostat I bought. I really wish I never bothered. What a PITA! First I get coolant all over the place when draining out all the old coolant, then once I get the thermostat housing unbolted from the block, the freaking 180 degree thermostat doesnt EFFing fit. The rubber boot thing that goes on one end of it makes it slightly to big to squeeze in there, and when I did get it in there, the rubber peice gets all bunched up, and we all know that wouldnt work. And if I take the rubber piece off, the thermostat is way too loose in the housing. ACK! So I trimmed the rubber peice up a bit and sealed it to the thermostat with gasket maker....which worked fine. Then I put it in after waiting 2 hours for the gasket to dry. It fit, and it seemed like my plan worked fine. I hooked everything up, and put the gasket they gave between the thermostat housing and the block, and tightened up the bolts good. So I fill up the coolant tank, and start it up......and look for leaks.....and the damn thing is leaking between the block and the thermostat housing. All the bolts were nice and tight......I am pissed. So im guessing its going to be slowly dripping into the bucket I have under it all night till its empty.......what a waste of coolant, and a huge waste of my time and money. Tomorrow I'm going to try and use the gasket maker to bond the gasket to the thermostat housing, and then on the other side also, and bond it to the block with the same stuff. Hopefully that will take care of my leaking problem. If not I will be very mad. Any suggestions or comments will be greatly appreciated.


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Old 09-08-2007, 10:18 AM   #2
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Just use a stock thermostat. A lower temp thermostat does'nt have any benifits. Just takes longer to get the computer into closed loop and wastes gas. If your car is overheating then you have other problems.
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Old 09-08-2007, 02:46 PM   #3
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Wait a minute!! I'm about to attempt the same thing, there are three parts to this right? The thermostat assembly(bolts to the block), the thermostat and the thermostat housing(goes over the thermostat). Do you usually have to replace the assembly and the housing or is it one or the other. Whats this talk about o-rings? I know I need the gaskets.
Thanx!
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Old 09-10-2007, 05:19 PM   #4
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Well, i'm glad to say its all fixed now, and my car is running great with the new thermostat. I did like I said i was going to, and used gasket sealer on both sides of the gasket, and bolted everything back up. The I let it cure for over 24 hours, filled it up with coolant, and today started it up, and no more leaking. Also, the thermostat works great.....Tom is going to send me a tune for the new thermostat soon, so its all working out great. Glad that is over with.....
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Old 09-10-2007, 05:31 PM   #5
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So what exsactly does he change for a "cold thermostat tune"?
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Old 09-10-2007, 08:04 PM   #6
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Its a secret......but it works.
I just cant give out that info to everyone.
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Old 09-10-2007, 08:44 PM   #7
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So in other words you dont know?

This does'nt sound like somthing turbo tom would do.
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Old 09-11-2007, 12:25 AM   #8
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I do know, but when I asked him to post a reply to your last question he said he doesnt like to give out that sort of info to the general public, so I told him I wouldnt tell anyone. Ask him yourself if you wunna know that bad.
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Old 09-11-2007, 11:44 AM   #9
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There's really no "secrets" to tuning for power. General rule, run as much timing as the octane will let you go, and aim for that target AFR (depending on N/A or FI). And some times just playing around will find a sweet spot in the ignition timing.
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Currently full 3" and e85.
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Old 09-11-2007, 09:45 PM   #10
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the spi has cooling running through the intake manifold and in theory if you can run it a little cooler on the intake you can add a few degrees of timing to the circuit. otherwise completely pointless. The timing in the SPI benefits alot from some tuning. you can modify the split ports not to close when you shift.(I would tell you how, but I don't like putting my tuning knowledge out to the world)
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