Conventional wisdom is never take the plugs out of a hot motorcycle or
snowmobile engine, they are alum.
daveS
----- Original Message -----
From: Patrick P. Castronovo <slick1@mohaveaz.com>
To: matt12@mail.rcip.com <matt12@tuna.rcip.com>;
<datsun-roadsters@autox.team.net>
Sent: Wednesday, May 02, 2001 9:00 AM
Subject: Re: Re: How tight should a spark plug be?
> I don't know about that one. I have found when you cannot move the
plug
> when it is hot, wait until it cools down and it will. Pat
>
>
> -----Original Message-----
> From: matt12@mail.rcip.com <matt12@tuna.rcip.com>
> To: datsun-roadsters@autox.team.net
<datsun-roadsters@autox.team.net>
> Date: Wednesday, May 02, 2001 7:38 AM
> Subject: RE: Re: How tight should a spark plug be?
>
>
> >I agree with Todd with regards to the penetrating oil.
> >
> >You also might try getting the engine up to normal running
temperature
> before attempting to remove the plugs. As aluminum expands at a
faster rate
> than steel, the plug hole should open up slightly more than the plug
expands
> in it thus making the plug a bit easier to remove without damage.
> >
> >Matt
> >70 1600
> >
> >Original Message:
> >-----------------
> >From: Todd Osborn trosborn@california.com
> >Date: Tue, 1 May 2001 21:20:57 -0700
> >To: datsun-roadsters@autox.team.net
> >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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