Stripped Spark plug

[JB]

Re: Stripped Spark plug

Howdy SeaBear. There are no cir***stances in which Diesel fuel is more hazardous than petrol. . . .or LPG.<br /><br /><br />Good luck.<br />JB

 

[SeaBear]

Re: Stripped Spark plug

JB - No need for the *'s - I didn't say diesel was more hazardous. I just stated that when hot can be nasty. In fact I have just searched the web and in http://www.transportation.anl.gov/ttrdc/publications/pdfs/esd-tm160.pdf it does state '...diesel fuel will ignite if heated sufficiently (diesel fuel is more<br />susceptible than gasoline to ignite on contact with hot surfaces, such as exhaust manifolds), and diesel fires have higher thermal radiation than fires fed by alternative fuels...' - which was the point I tried to make? Anyway forget I even mentioned it - different strokes for different folks ...

 

[JB]

Re: Stripped Spark plug

Ahoy, SeaBear. No offense intended, Sir. The *** are substituted when the censor software doesn't like a particular sequence of letters. <br /><br />I agree that Diesel fuel certainly represents more energy than an equal weight of petrol. Diesel fuel is, with the possible exception of contacting a surface above its flash point, far safer to handle and store than petrol. I wouldn't dare test the claim that Diesel is more likely than petrol to ignite under such conditions. Compare Insurance rates for Diesel vs. petrol powered boats. That was my point.<br /><br />Happy boating.<br />JB

 

[SeaBear]

Re: Stripped Spark plug

Ahoy JB! Deepest apologies for the *'s accusation! I now realise what you wre substituting - very sharp of you and very blunt of me!<br /><br />I would agree that diesel is less likely to ignite in most cir***stances [getting the hang of it now!] - LPG is the nasty one over here although the conversion involves gas sniffers, etc I still wouldn't like to be sitting over 600 litres of that stuff if it did get on the loose!

 

[JB]

Re: Stripped Spark plug

Ahoy, SeaBear. No worries. I was baffled the first time I encountered the results of paranoid censors, also.<br /><br />Bon Voyage.<br />JB

 

[krosemond]

Re: Stripped Spark plug

Touche' my friends.<br /><br />Just an update, boat ran great, no explosions(except the ones contained within the cylinders). Your postings did make me think pretty hard about the safety issue. Here is what I came up with: There were enough threads remaining that I don't think the plug would blow out, even without the cold weld. Yes it is worth fixing right, which I plan to do. I believe the plug will come out with a good twist, and the remaining epoxy will come out when I ream it for the helicoil.<br /><br />This was all about a "temporary" fix to get back on the water. But I wish I had stayed home and worked on the boat in the safety of my carport. Anyone who has boated in or around Beaufort Inlet, NC on a holiday weekend knows what I am talking about. I have been boating for 25 years, and I have seen alot of idiots, but this weekend took the cake. I guess anyone who can write a check can be boating the next day. Or I guess anyone with a spark plug wrench and some JB Weld can be a mechanic. I must be just a more "highly evolved" case of what I saw on the water this weekend.<br /><br />Anyway, thanks for the comments, and I will retire from this thread now.<br /><br />

 

[ODDD1]

Re: Stripped Spark plug

Krosemond ...you know the definition of a GOOD mechanic? One that knows just how hard to hit someting without breaking it!

 

[krosemond]

Re: Stripped Spark plug

Here is an update for all interested parties:<br /><br />The plug finally blew out of the socket at the lake yesterday, after about 25 hours of successful operation. No explosion.<br /><br />I screwed it back in by hand and limped back to the ramp without incident.<br /><br />Now I am off to find a helicoil!

 

[sunraker]

Re: Stripped Spark plug

Yes. I believe the term for the part you need is a helicoil (or something to that effect). The plug opening is tapped out to a larger size and the helicoil is threaded into the hole. Then the plug fits into the helicoil. Any mechanic should be able to do the job at a nominal cost.<br /><br />SCP

 

[crazyray]

Re: Stripped Spark plug

there a repair kit available that works great for automotive uses with a alumiuim head that uses a special tap/reamer that you can use on engine with no worry of disassy. I coat the tap with grease and also insure piston is at bottom of travel on intake stroke and use grease gun to fill cylinder with greasemaybe could do same by getting piston just above ports on 2 stroke... then when you finish you just rotate engine any shavings that got by tap can easily pushed out with the grease.....done probablay 25 times and never a negative result...these inserts have dogs on them to secure in hole and are very good compared to regular helicoils. Think the kit is 8-9 dollars at auto repair parts houses. good luck

 

[crazyray]

Re: Stripped Spark plug

all of 15ins to do repair too....... and very permanent