SagSert Posted November 12, 2009 Share Posted November 12, 2009 Does anybody know whether the freeze plug on the block under the header is a 35mm or 40mm, is it a deep one or shallow one ? Mine developed a tiny pin hole and pissing coolant. Cheers Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted November 12, 2009 Administrators Share Posted November 12, 2009 Major bummer sorry to hear this. If one of the "core" plugs has a pin hole and is leaking, rest assured the rest are about to go as well, i.e. rusted through! If this is a temporary interim power-plant, you know what to expect but if this is your daily driver and you are depending on it for transportation, i.e. not just a weekend toy, you probably should replace them all as it is only a matter of time before the rest start to leak. The sides of the block are 35 mm, front is 40 mm, rear is 50 mm. The "soft" plug under the timing chain will probably be the last one to start leaking due to its more consistent environment, but I would not trust that. Hope that helps, Paul Quote Link to comment Share on other sites More sharing options...
SagSert Posted November 12, 2009 Author Share Posted November 12, 2009 Thanks Paul, would you happen to know whether it's a deep dish or a shallow 35mm ? The car is neither a daily driver nor a weekender, it's something in between. If my stolen car isn't found the Z may very well become a daily driver though. Cheers Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted November 12, 2009 Administrators Share Posted November 12, 2009 Deep. Quote Link to comment Share on other sites More sharing options...
SagSert Posted November 12, 2009 Author Share Posted November 12, 2009 Would one of these do the job ? Cheers Quote Link to comment Share on other sites More sharing options...
Administrators BRAAP Posted November 12, 2009 Administrators Share Posted November 12, 2009 That would be a temporary fix, quick and easy to install, will get you down the road, just not something to count on long term. Don't forget to thoroughly clean the machined bore in the block for the core plug to get a good seal. Usually they are quite gunked up and corroded. If you have access to air and a die grinder, or even a drill motor, these flapper wheels work quite well. 1"-1 1/4" diameter. Quote Link to comment Share on other sites More sharing options...
SagSert Posted November 13, 2009 Author Share Posted November 13, 2009 Thanks for the advice, removal of the old plug was actually more difficult than installing the new one, without removing the exhaust manifold that is. The whole thing took about 3 hours including a trip to the parts store. Cheers Quote Link to comment Share on other sites More sharing options...
neotech84 Posted November 13, 2009 Share Posted November 13, 2009 How bad was the coolant passage? Did you have a lot of rust deposits in there?? Quote Link to comment Share on other sites More sharing options...
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