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Thermostat Housing by 84 Fiero SE
Started on: 11-09-2014 12:18 PM
Replies: 7 (654 views)
Last post by: 84 Fiero SE on 11-11-2014 11:58 AM
84 Fiero SE
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Report this Post11-09-2014 12:18 PM Click Here to See the Profile for 84 Fiero SEClick Here to Email 84 Fiero SESend a Private Message to 84 Fiero SEEdit/Delete MessageReply w/QuoteDirect Link to This Post
Thermostat Housing Leak .... From housing to engine block .... Replaced gasket 3 times now, and for some reason I can't get it to seal. Original gasket was a rubber seal .... AutoParts are now selling these composite gaskets. Some thoughts or advice please...?
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Lou6t4gto
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Report this Post11-09-2014 05:16 PM Click Here to See the Profile for Lou6t4gtoClick Here to Email Lou6t4gtoSend a Private Message to Lou6t4gtoEdit/Delete MessageReply w/QuoteDirect Link to This Post
Just use a bead of permatex "Gasket Maker", comes in a tube and once dried ((24 hrs), it will not leak.
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Patrick
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Report this Post11-09-2014 06:05 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
Make sure the gasket surface area of the thermostat housing is perfectly flat, not warped. File and or sand flat as required.

[This message has been edited by Patrick (edited 11-09-2014).]

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theogre
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Report this Post11-10-2014 10:16 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by 84 Fiero SE:
Thermostat Housing Leak .... From housing to engine block .... Replaced gasket 3 times now, and for some reason I can't get it to seal. Original gasket was a rubber seal .... AutoParts are now selling these composite gaskets. Some thoughts or advice please...?

1. Two styles of Tstat housing.
If has rubber "O-ring" then FEL-PRO Part # 35062 and others Will Not Work.

2. O-ring then you can try using only RTV but you need:
a clean and dry housing and block. No coolant dirt or oil at all on the parts. Use brake cleaner for final cleaning step.
RTV needs time to set and "dry," like 2 days or more. You can not fill the system while the RTV cures.

I made a gasket using FEL-PRO Part # 3018 Cork-Rubber Sheet.
inside diam is same as FEL-PRO Part # 35062
Outside diam fit the housing hole.
End result:


Then I use small amount of RTV, both sides, and let dry 1-2 days. (Read full dry/cure time of product, set time is meaningless here.)

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theogre
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Report this Post11-10-2014 10:23 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Patrick:
Make sure the gasket surface area of the thermostat housing is perfectly flat, not warped. File and or sand flat as required.

"Gen 2" housing that uses O-ring gasket is very hard to warp etc.
If you bend the heavy flange then you likely need another housing.
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Patrick
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Report this Post11-10-2014 04:43 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by theogre:

"Gen 2" housing that uses O-ring gasket is very hard to warp etc.
If you bend the heavy flange then you likely need another housing.


Ogre, I was having a memory malfunction and was thinking of the thermostat housing on the 2.8 engine.
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Dennis LaGrua
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Report this Post11-10-2014 06:37 PM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
Permatex makes a water pump gasket sealer that comes in a small tube. Have only used the full gasket with the sealer and they always sealed perfectly.

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84 Fiero SE
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Report this Post11-11-2014 11:58 AM Click Here to See the Profile for 84 Fiero SEClick Here to Email 84 Fiero SESend a Private Message to 84 Fiero SEEdit/Delete MessageReply w/QuoteDirect Link to This Post
Guys, Thanks for info. I'll give it another try this weekend.
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