F355 Anyone replaced their thermostat? - Ferrari Life
 
LinkBack Thread Tools Display Modes
post #1 of 9 Old 08-15-2015, 09:00 AM Thread Starter
Owner
 
Taz355's Avatar
 
Join Date: Mar 2013
Location: Alberta,california
Ferrari Life Posts: 379
Anyone replaced their thermostat?

So i have taken this thing apart 4 times now and i think the leak is comming from the thermostat housing. Traces of coolant are solidified on the housing. My question is do others that have replaced it used two gaskets or one? Ricambi only shows one on their website and i only used one. It did seem kinda weird but i thought i was following the correct method. Here is a pic of both for a 308 so i know they use both.
Attached Images
 
Taz355 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 Old 08-15-2015, 09:01 AM Thread Starter
Owner
 
Taz355's Avatar
 
Join Date: Mar 2013
Location: Alberta,california
Ferrari Life Posts: 379
Is there a green gasket part number somewhere or should i try the 308 one?
Taz355 is offline  
post #3 of 9 Old 08-15-2015, 12:54 PM
Owner
Sponsor
 
David @ FluentInFerrari's Avatar
 
Join Date: Feb 2009
Location: Sarasota FL
Ferrari Life Posts: 962
Hmmm....I can't recall the F355 using a gasket other than the square cut o-ring. That's all that is shown in the parts manual. I just did a 456 and it too used a seal ring versus a gasket.

Sarasota Italian Garage, LLC
Sarasota, FL
www.fluentinferrari.com
[email protected]

**An independent facility with no affiliation with Ferrari SpA**
David @ FluentInFerrari is offline  
 
post #4 of 9 Old 08-15-2015, 02:08 PM Thread Starter
Owner
 
Taz355's Avatar
 
Join Date: Mar 2013
Location: Alberta,california
Ferrari Life Posts: 379
Thanks David mine too just uses the split rubber over the thermostat but i know it is slightly leaking. Do you think it would hurt to put a thin gasket like that green one in. There. I do not want to over torque or break the studs trying to get it to seal.

Thaks for your reply.
Taz355 is offline  
post #5 of 9 Old 08-15-2015, 04:10 PM
Owner
Sponsor
 
David @ FluentInFerrari's Avatar
 
Join Date: Feb 2009
Location: Sarasota FL
Ferrari Life Posts: 962
Quote:
Originally Posted by Taz355 View Post
Thanks David mine too just uses the split rubber over the thermostat but i know it is slightly leaking. Do you think it would hurt to put a thin gasket like that green one in. There. I do not want to over torque or break the studs trying to get it to seal.

Thaks for your reply.
Grant, you shouldn't have to. Your split o-ring may just be over-compressed and need to be replaced (if you haven't done so, already.) The torque of those fasteners is only 6.5 lb-ft. Although a gasket probably be OK, I'd be more inclined to determine why she's leaky there and perhaps a touch of sealant around the split-ring would be more in order. I can tell you from fist hand experience with a similar set-up on a 456 (that drove me nuts) that if the seal ring isn't perfect, they will leak.

Sarasota Italian Garage, LLC
Sarasota, FL
www.fluentinferrari.com
[email protected]

**An independent facility with no affiliation with Ferrari SpA**
David @ FluentInFerrari is offline  
post #6 of 9 Old 08-15-2015, 04:24 PM Thread Starter
Owner
 
Taz355's Avatar
 
Join Date: Mar 2013
Location: Alberta,california
Ferrari Life Posts: 379
Ok. I did replace the seal and it is definately leaking less. Thanks

Possibly if i put on the gasket then the seal wont compress enough and that may cause more problems. Now that i think about it

Thanks again.
Taz355 is offline  
post #7 of 9 Old 08-15-2015, 04:26 PM Thread Starter
Owner
 
Taz355's Avatar
 
Join Date: Mar 2013
Location: Alberta,california
Ferrari Life Posts: 379
If overtightening will make it leak i think thats what i did.
Taz355 is offline  
post #8 of 9 Old 08-16-2015, 10:06 AM
Owner
Sponsor
 
David @ FluentInFerrari's Avatar
 
Join Date: Feb 2009
Location: Sarasota FL
Ferrari Life Posts: 962
Are you sure you're just not seeing a bit of seepage from when you cracked the bleeder on top of the thermostat housing?

Sarasota Italian Garage, LLC
Sarasota, FL
www.fluentinferrari.com
[email protected]

**An independent facility with no affiliation with Ferrari SpA**
David @ FluentInFerrari is offline  
post #9 of 9 Old 08-16-2015, 12:38 PM Thread Starter
Owner
 
Taz355's Avatar
 
Join Date: Mar 2013
Location: Alberta,california
Ferrari Life Posts: 379
Yes because the sepage was there before i tried bleeding it. I know those bolts are ovetorqued because the numbers you said are not verry high.

Thanks again.

I did snug up all connecting hoses and so far so good no leak but only driven two separate occasions. Time will tell.
Taz355 is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
Copyright 2012 ONE Media, Inc.
FerrariLife is independently run with no affiliation with Ferrari SpA
Ferrari for Sale | Maserati for Sale