If you're serious about changing your plugs, throw away that t-bar wrench
and invest in a good quality socket wrench. Most plugs today are of the 5/8
ths socket, but the older models are 13/16 ths. I like Creftsman tools, the
quality is very good, and if they break, sears will replace them, no
questions asked. Pat
-----Original Message-----
From: Todd Osborn <trosborn@california.com>
To: datsun-roadsters@autox.team.net <datsun-roadsters@autox.team.net>
Date: Tuesday, May 01, 2001 9:28 PM
Subject: Re: How tight should a spark plug be?
>Tom,
>Spark plugs should be torqued to 25 ft-lbs, however you can get some
binding
>between the aluminum head and steel spark plug that will make them
difficult
>to remove. Best to assemble with anti-seaze grease. Of course this doesn't
>help you much at this point. Try spraying the plug with liquid wrench and
>letting it soak overnight, may still take a fair bit of torque to break
>loose. If it is hard to turn after about the intial quarter turn, spray on
>some more oil and wait, otherwise you may get some galling which could
>damage the head.
>Todd Osborn
>San Jose, CA
>----- Original Message -----
>From: "Tom Duffy" <tomuo@pacbell.net>
>To: <datsun-roadsters@autox.team.net>
>Sent: Monday, April 30, 2001 9:24 PM
>Subject: How tight should a spark plug be?
>
>
>> I'm trying to replace the plugs on my '68 1600, but a short try
>> with a small T bar type spark wrench failed to budge #1. I'm
>> wondering how much pressure I can put on them without
>> damage occuring anywhere. Should I try spraying some WD40
>> to soak into the threads area? What is your experience
>> in removing old plugs?
>> The Engine runs fine now, so I don't want to try anything
>> that might put it out of commission for a while, seeing as
>> it's my daily drive (CA, Bay Area).
>>
>> Thanks,
>>
>> Tom.
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