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Thermostat seems too small.
Topic Started: Oct 21 2013, 01:25 PM (2,036 Views)
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Big Rhino
Oct 21 2013, 02:59 PM
ascensions
Oct 21 2013, 02:54 PM
Big Rhino
Oct 21 2013, 01:59 PM


Use the correct parts for a metro and type thermostat housing you have and you will have no problems if done correctly.
Respectfully, I Completely disagree (at least in regards to 1996 and newer models).
What exactly 96 and later parts that sell for a metro and part numbers are you saying does not work? I suspect most people are not installing these things as needed. It is not the parts fault. I have had no issues with any gaskets or seals sold for a metro myself.
The NAPA THM1076 and Fel-Pro 35451 will work, however, there is a better method, that method being to use one of the other two seals listed in this thread.



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ascensions
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Je conduis une petite voiture.

The rubber seals they sell at auto-huts, are not thick enough to seal the deeper water-outlet housings.

It's hard to see it here, but this is a new Metro gasket, and there is still a 2-3 mm space from the seal to the housing.

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Now there was a TSB on the matter, but manufacturers supplying these auto-huts never updated their inventory to include the thicker seal.

You can buy it through Chevy at $25 a piece, or my preference buy the $5 Neon one at Auto-Hut.
Edited by ascensions, Oct 21 2013, 03:10 PM.
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Memphis metro


Glenn you said earlier something did not work. Now you say it works. :smackface
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Why half ass something together when you can do it better the first time. Keep up with the changes. :news

The next thing you know, you'll get a recommendation for Indian Head Gasket Shellac. That stuff will work, but, it sucks.

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Memphis metro


Geo Glenn
Oct 21 2013, 03:11 PM
Why half ass something together when you can do it better the first time. Keep up with the changes. :news

The next thing you know, you'll get a recommendation for Indian Head Gasket Shellac. That stuff will work, but, it sucks.

What does your factory service manual say about it?
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Deleted User
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:lol When all else fails, refer to the Factory Service Manual. So far, so good. Not one leak.
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ascensions
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Je conduis une petite voiture.

I'd swear if I didn't know any better Big Rhino was looking for a fight?
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We poke at each other all the time . . . :monkeyfight
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Memphis metro


ascensions
Oct 21 2013, 03:19 PM
I'd swear if I didn't know any better Big Rhino was looking for a fight?
No fight here sweetness, I just have not had any problems using any thermostat gaskets and seals sold for a metro. ^o) Never been much of a fan for using parts for other cars on a differant car either. I know Glenn is a great guy and knows as much about these cars as any of us. Only thing is, if you dont jab him ever now and then, his head starts to swelling.
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ascensions
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Je conduis une petite voiture.

No worries, I'm open, and accept all gasket philosophy.

It's worthy to note there are two water-outlet housings (as posted in another thread)...
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If you have the shallower housing, I imagine the Auto-Hut seals will work fine. Unfortunately they list that same seal for later-models (or did when I replaced mine).
Edited by ascensions, Oct 21 2013, 03:30 PM.
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evintho


Geo Glenn
Oct 21 2013, 02:46 PM
The Fel-Pro P/N 35365 goes between the head and the thermostat housing. Ultra-Gray RTV is the best.
When gathering parts I neglected to order that gasket. :smackface
So, when it came time to put it together the other day I just used a fairly thick coat of RTV Ultra Black, no gasket. I mean RTV is a gasket maker. Should be good to go.
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JADEDSL2
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evintho
Oct 21 2013, 05:14 PM
Geo Glenn
Oct 21 2013, 02:46 PM
The Fel-Pro P/N 35365 goes between the head and the thermostat housing. Ultra-Gray RTV is the best.
When gathering parts I neglected to order that gasket. :smackface
So, when it came time to put it together the other day I just used a fairly thick coat of RTV Ultra Black, no gasket. I mean RTV is a gasket maker. Should be good to go.
Yeah, until some of that breaks off and clogs something internally. Ultra black is a no-no. If I were you I'd promptly remove it, clean it off, and get a real seal. I'm using a neon seal as per Glenn's recommendations, and as I had both the neon seal, and the metro seal on my person at the time of install, I can tell you, the neon seal is 1000% better.
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JADEDSL2
Oct 21 2013, 05:23 PM
evintho
Oct 21 2013, 05:14 PM
Geo Glenn
Oct 21 2013, 02:46 PM
The Fel-Pro P/N 35365 goes between the head and the thermostat housing. Ultra-Gray RTV is the best.
When gathering parts I neglected to order that gasket. :smackface
So, when it came time to put it together the other day I just used a fairly thick coat of RTV Ultra Black, no gasket. I mean RTV is a gasket maker. Should be good to go.
Yeah, until some of that breaks off and clogs something internally. Ultra black is a no-no. If I were you I'd promptly remove it, clean it off, and get a real seal. I'm using a neon seal as per Glenn's recommendations, and as I had both the neon seal, and the metro seal on my person at the time of install, I can tell you, the neon seal is 1000% better.
:+1 Been there, done that. Get the gasket.

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davegran
Old Fart w/Wrenches

Back in September when my wife & I made the pilgrimage to Washington state, the land of rust-free Geos, we stopped in Missouri first to get a rebuilt head that Geo Glenn had put together for our red '95 3/5.

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It was to replace this one.... We discovered at the Minnesota Metro Meet that the compression was, cyl#1 - 180psi, cyl#2 - 70psi, cyl#3 - 120psi. :smackface

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While we were installing it at his place, I caught some pictures of the process. Here is how he made sure the thermostat wouldn't leak. First he put a little bit of Ultra-Gray RTV on the flange of the water outlet.

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Then he put the THM1105 seal from NAPA and the 180* thermostat into the housing with the dribble valve at 6 o-clock.
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And when he torqued it down, just the tiniest little bead of Ultra-Gray extruded out of the joint. Perfect seal... Thanks, Glenn.
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Old Man


Mythstae
Oct 21 2013, 01:28 PM
You need a gasket!
P/N THM1105
It's for a Dodge Neon, but it is really nice.
And it does fit.
http://www.napaonline.com/Catalog/CatalogItemDetail.aspx/Thermostat-Housing-Seal/_/R-THM1105_0080422114

I believe this was originally suggested by Old Man :hmm
Not me. I am just a parrot for others. I got this thermostat leak fix from Bad Bent--here it is:
http://geometroforum.com/topic/5015643/1/
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