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Oil Thermostat Thread fixer

A while ago I remember reading about a fix for the aluminum threads that usually disapear when you remove the steel oil lines from the thermostat.
Some kind of an adapter possibly??
I tried a search w/ no luck.
Is their such an "adapter" or do I need to buy a die to try and make new threads or hopefully not, is the thermostat now trash...?
Thanks!
Bob
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Old 07-04-2009, 03:25 AM
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I have heard of folks getting closest size adapter in inch or metric and tapping out to fit. Then again, did some engine work on a P-car with the thermostat fitting jb-welded in by the owner. I am not a fan of either of these, as tapping can get shavings in the thermostat, and jb-weld is obviously just red-necked to heck and now your oil line is permanent.

The adapter you are speaking of is this: http://www.pelicanparts.com/cgi-bin/smart/more_info.cgi?pn=PEL-PP901687&catalog_description=Thermostat%20Saver%2C%20911%2F 911%20Turbo%20(1974-89) I would go with this option or a new thermostat.
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Old 07-04-2009, 03:43 AM
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thats the ticket!!
Thanks, Bob
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Old 07-04-2009, 04:08 AM
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oh... by the way... has anyone used this "saver" and how did it work?? Need to use any sealant...? did it come with directions...? is it steel or alum...?
Thanks again!!
Bob
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Old 07-04-2009, 04:10 AM
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I have used similar on different carbs... just screw it in, it cuts the threads as you do so.
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Old 07-04-2009, 04:39 AM
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the ones I used came with a little tube of seelant.
Old 07-04-2009, 04:49 AM
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will this "Saver" sold by Pelican cut new threads as I have maybe 5% of the total thread height left and hope this may work.
I was thinking about using locktite so it won't leak and never come off since it claims that you will be able to remove the steel lines w/o losing threads again... which led me to my earlier question "IF" the "Saver" was steel which is way more compatable w/ the steel of the oil line nut vs. the original thermostat alum & steel oil line which created this problem in the first place...
Any more advise ~ experiences with this guys...??
Thanks,
Bob
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Old 07-04-2009, 05:35 AM
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The Thermostat Saver is designed to use the threads of the thermostat that were not covered by the fitting before. Most fittings, if not all, use only the first half of the thermostat housing's threads. I do not think the saver has threads that are "thread restorers". If you want to make it easier to get the fittings off in the future, I recommend putting anti-seize on the threads.
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Old 07-04-2009, 05:53 AM
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pictures of the threads





as you all can see... pic 1 & 4 are of the 2 w/ good threads... pic #2&3 are the issue...I don't see more than 2-3 threads left beyond where the steel oil line connected to the thermostat that "might" allow the "Saver" to grip onto... what do you all think??
Bob
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Old 07-04-2009, 06:27 AM
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I have to make a correction on my previous post. The saver uses the first third of the thermostat threads, not the last half. I pulled out a saver and photographed (below).
911tweeks, looking at your photos, pics 2&3, the saver solution does not look too good, imo.

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Old 07-04-2009, 07:31 AM
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Thanks Dave for your input.
Any ideas... I was thinking of buying a die to try and re-thread the 2 threadless connections... however, I thought about the cost of a die and is there enough material left to make more new threads now since I have lost material (aluminum) i.e. threads from the steal nuts?
Also, is the "Saver" steel or alum?? IF steel, it may "cut" new threads... possibly with what is left or should I try to buy a die or find a machine shop that will let me borrow their die to see if I can re thread them...
If the "Saver" is made of alum, will it make new threads??
I sure hope I am not looking at buying a new thermostat @ $300+...
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Old 07-04-2009, 03:11 PM
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Thanks Dave for your input.
Any ideas... I was thinking of buying a die to try and re-thread the 2 threadless connections... however, I thought about the cost of a die and is there enough material left to make more new threads now since I have lost material (aluminum) i.e. threads from the steal nuts?
Also, is the "Saver" steel or alum?? IF steel, it may "cut" new threads... possibly with what is left or should I try to buy a die or find a machine shop that will let me borrow their die to see if I can re thread them...
If the "Saver" is made of alum, will it make new threads??
I sure hope I am not looking at buying a new thermostat @ $300+...
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Old 07-04-2009, 03:13 PM
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Hey Tweaks,

Did you ever fix your thermostat? I am in the same boat now...

Thanks a lot,
Gene
Old 07-30-2010, 06:15 AM
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How to fix stripped threads on the thermostat

I also used the Thermostat saver sleeves.



Here is what I did:

Got me a M30 X 1.5 nut, and ground in 2 groves. Cleaned up what was left on the messed up threads.





Ready to go on



I used this stuff to epoxy the sleeves on







Hope this helps others who may get in that situation.
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Old 02-23-2011, 08:25 AM
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Devcon on Amazon at $41.17 for a pound or $5.20 for 2 oz tubes (not sure if does the same as the tube got a different description then the one 1 lb containers).

They also got one for Stainless Steel.
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Old 02-23-2011, 08:40 AM
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Old 02-23-2011, 08:40 AM
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