[ROVERNET - UK] p6b- stripped thread on thermostat housing

[Ron Morey]

Peter, another option is to purchase a left hand drill bit that is 3/4 the 
diameter, or so, of the bolt. As the bolt heats from drilling, in the 
reverse direction, there is always the chance that it will break free and 
run itself out as you drill. The sides of the bolt will also weaken as you 
remove the middle, this sometimes will break the bolt free. Then if it 
doesnt I would remove the manifold and use heat-either by you or someone 
else if you dont trust yourself. Easy outs can be tricky to use and easy to 
break, especially without heat applied to the seized part. Once they break 
you will have a piece of very hard metal stuck in a slightly softer bolt 
stuck in a very soft manifold. I understand your reluctance to remove the 
manifold. With great care it can be done in place if you ensure there is 
absolutely no way for flame to meet combustible. I have had the misfortune 
or should I say learning  opportunity, of all of the above. "Remember, we're 
pulling for ya. We're all in this together", Red Green
All the best, Ron.

>From: "Peter Mitchell" <peterm at arach.net.au>
>Reply-To: rovernet at lyris.ccdata.com
>To: "Rovernet" <rovernet at lyris.ccdata.com>
>Subject: [ROVERNET - UK] p6b- stripped thread on thermostat housing
>Date: Sun, 19 Sep 2004 20:02:56 +0800
>
>Hi Rovernetters
>
>Today I changed the thermostat on my P6B 1976, as the engine has been 
>taking
>forever to warm up.  Despite my best efforts, I stripped a thread when
>replacing the bolts on the thermostat housing.
>
>I have a tap to re-thread the hole a size larger to take bigger diameter
>bolts.  As a rooky Rover owner my questions are please Netters:
>
>Access is going to be a problem - should I remove the distributor to get a
>clear shot at retapping the thread by hand?  Or would I be best to take off
>the inlet manifold entirely?
>
>Please forgive the lack of knowledge displayed and your responses will be
>genuinely appreciated.  We are hosting the National Rove, a get together of
>Rovers from all over Australia, next week, and my car may not be leaving 
>the
>garage at this stage.
>
>Kind regards
>
>Peter Mitchell
>P6B
>Perth Western Australia
>
>
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