gulzarh

I want to change the thermostat of my car but there is a screw that I can not open. It is rusty and trying to open several times it's head has begun to become a little round which makes the 10mm key slide as soon as I try to turn it. I tried other 10mm key but I am not able.
This is a 10mm screw.
I do not want to go see the mechanic because I know it would not be easy for him and this without undoing the front of the car in addition to pay him.
So I want to buy a tool to which can really open this so i can use this tool for future.
i saw on YouTube/eBay nut splitter cutter, Grip-Tite Wrenches and Sockets, SocketPro etc..
but i dont know which is better in my situation. Thank you
P.s. I already put a wd40 plus another anti-rust but it did not work.

ezone

6 point socket
vise grips
spline drive socket or wrench such as Matcos ADV drive,

I've got a couple different sets of this style and they have gripped some amazing stuff that was seriously damaged







Worst case, break it off and plan for spending some time drilling out the broken chunks and retapping it or making thread repairs.

gulzarh

the matco look good to me can you find me a which can fit where i want to remove otherwise it will be hard to remove with this matco in picture.
waht about this one ? http://www.ebay.ca/itm/2pc-Nut-Split...3D332192197595

gulzarh

i have damage it little more white with screw driver machine with sand paper round ring.
http://imgur.com/a/D2lTl
http://imgur.com/a/DXwt0

ezone

You've linked to a nut splitter. That isn't designed to do what you want.

Looks worse. Try some vise grips?

Colin42

hammer a slightly smaller socket on?

gulzarh

i bought aligator and vis grip and spend 58$. Nothing work. zero, nope, waist,
actually screw head is small and socket slip as soon as move a little bit.
i am looking to sold it. is ther a cheap way to sold it? like some science technic, or magic thing
i ask to one welder and he ask 100$. yeah 100$

ezone

Maybe this guy can do it.

gulzarh

there is no way to remove it without welding i am 99% sure.

can you tell me if there is light welding material that i can buy on eBay amazon to do it my self?

i am watching YouTube and there are some stick called cellulose Something. maybe i can buy one and try my self.

ezone

The bolt is seized in aluminum, probably galled the threads? Have you tried heating the bolt head with a torch? (WARNING: do not melt the aluminum)

I'd probably have broken the head of the bolt off, or cut the bolt apart yesterday, then drilled out the broken pieces and retapped the threads


Junkyard, check for a replacement housing from another engine?

gulzarh

the bolt are not in metal??
i was trying to sold the socket with small electric solder with his smal thin wire and it was not holding at all. hm..

what is torch? no i did not heat up with torche. by torch you mean small light?

i dont want to loose this housing, my mission is to remove the screw by myself without repalcing anything except screw.

all help are welcome

i was using this one https://www.circuitspecialists.com/c.../sh-813a-0.jpg
https://www.sabdel.com/wp-content/up...6/03/4-335.jpg

ezone

Aluminum is metal.





Bolt is steel.
Housing is aluminum.
Galvanic corrosion can occur between dissimilar metals. (google it)
Galvanic corrosion can cause thread galling.



Not illumination.

Fire: Propane, MAPP gas, or oxy-acetylene torch.

gulzarh

no i didnot try torch i dont have it.
if you have any idea let me know thanks

mikey1

cant you lock a pair of vise grips on it??

gulzarh

No. The screw head is not enough large/long/big to be locked with vise-grip.

The mechanic is asking for 100$ to remove it.
My job day sallary is 63$ for 7hours works.

ezone

Dare I ask why?

gulzarh

There was overheating problem with my car so I bought three item.
Ecs and radiatif switch, after installing them the problem seem to be solved but since that the car got overheated once and the coolant spray out from overflow reservoir/tank some time or almost always and smell very bad.So as I feel the problems is still there and I have brand new thermostat which I can't return so I préfère to install it and remove the old one to prevent any problem in future. I can't return it, sold it or throw it si I préfère to install it.
As I am learning how car work on YouTube and open-close my own car so I am very excited to change it by myself to have move confidence in me for next any repairing in future.
As I already have damage the bolt little bit and try many thing to open, i don't want to fail and loose my confidence. The bolt is not intelligent as human so I need to win.

mikey1

i have a funny feeling your problems are a lot more severe then a thermostat,

you likely have a blown head gasket,

i don't think the thermostat replacement is going to help much

gulzarh

The engine oïl is fully clean no signe of coolant Inside.
i know it will not resolve the problem but in case...
the thing i dont understand why the coolant is spray out of overflow bottle. the are working also. it is kind of myster for me.

i have make this video while trying to open the bolt.

mikey1

it is no mystery, its because your head gasket is blown,

combustion gases are getting pushed through the head gasket into your cooling system....the air/gas in the cooling system is pushing coolant out into your overflow tank,

the air/gas in the cooling system also causes the overheating



on a side note
i could have that bolt off using vise grips, a hammer, and a chisel in less then 5 mins

gulzarh

i am reading other thread also and start beleiving it should be headgasket problem,
just to make sure the wrench i a m using in video is called vise grips that your are talkin about? just to make sure
i am watching video on YouTube how to chang headgasket and it is hell big job, i will contact HONDA mechanic to see how much they will charge me.
thanks i will try what you say about Hammer and vise grip.
you will open it in 5min??? i feel big looser comparing to you

mikey1

use a hammer and try to hammer on a 9mm socket,

but once again, i dont think changing the thermostat will help anyway

ezone

Head gasket is blown.

The stuck bolt you have been fighting can be repaired while the head gasket job is being completed.

gulzarh

yes i know that, i am convinced it is bad headgasket. i just need to find some one who can help me to change it.
thermostat is just for experience Nothing more than this.
Thank

gulzarh

yeah i found the problem with all of your helps guys. now it is time to change the hg. thanks to all