Chipped Spark Plug Hole??? WT?

[bighead]

My local scrapper stopped by today and this was in his truck. He told me the guy that gave it to him said it ran. But it kept shooting the spark plug out. I gave him $35 cash and some junk I had.

I did a CSI on the generator and saw this big chip in the head. They also tried putting some huge wierd spark plug with about 3 washers on it. Hmmmm. Threads are toast.

My questions are?

I see no fix but to replaced the head right? There is no flush spot for the plug to seal on the head. Could a hilli coil and JB weld work here?

I do not know if it does run. It does have spark though. My plan is to thread a new plug in the best I can. Then JB weld the plug to the head. Then see how it runs and if the Gen. even works. If it runs and works then I will replace the head.

Or what would you guys do?

I am pretty sure a person tried to thread in that hug plug you see in the pics. While forcing it on it chipped the side around the plug hole. Thats the only way I can see it chipping like that. Plus the plug is still with it. It's hard to see but that plug is way way to big.

I can really use one of these in are big camping trip coming up.

 

[bighead]

http://cgi.ebay.com/MULTIQUIP-GENER...10568003?pt=BI_Generators&hash=item3cb9857143

http://cgi.ebay.com/Multiquip-3600-...07389011?pt=BI_Generators&hash=item3cb954ef53

http://cgi.ebay.com/MULTIQUIP-GENER...29053674?pt=BI_Generators&hash=item2eb66c68ea

Those are asking prices. So it is about a $300 unit in working order.

 

[B man]

i say put the plug in and try it for a sec.

 

[bighead]

i say put the plug in and try it for a sec.

Your right. Lets see if it flies out. Got to fix the pull rope first. It busted after about 5 pulls checking the park. Thing is I do not know if it will even seal to get enough compression to start.

 

[r_chez_08]

I would try JB weld. If it works then I would get a new head,
Edit: anders suggestion below looks better.

 

[anderkart]

I think your correct spark plug has 14mm. threads. If so, here's an 18mm. spark plug adaptor you could drill/tap your head to install: http://www.ntxtools.com/network-tool-warehouse/IPA-7885.html

I think this would be a much better repair than using a helicoil, and cost way less than a new head...

 

[daniel7250]

anderkart has the same idea as me. another way would to take your spark plug to a nuts and bolts shop and get a thin nut that screws on to it . then screw that on and screw it into the head. then tig-weld the nut to the head and fill the gap .

 

[Doc Sprocket]

Can you even TIG steel to aluminum? Don't sound right to me.

 

[fowler]

no steel and ally dont react well together

could u just completely fill the hole and start all over again

 

[Doc Sprocket]

I was being facetious.

 

[fowler]

sorry i wasnt trying to be serious
just sort of answering your retorical question

need emotion transmision (what ever that is)

 

[Bluethunder3320]

i would find out how much a new head costs.

you need to take of the head anyways because you shouldnt drill and tap the hole and leave shavings in the cylinder...

 

[Cam]

Maybe he meant an aluminium nut? - that would work well

That 18 mil nut thread adapter with a shot of locktite would most probabley work, id take the head off, see if anything else is damaged first though

 

[daniel7250]

sorry i thought the head could be alloy. you could braze weld it .

 

[fowler]

theres no way of avoiding takeing the head off as there will most certonlly be chips in the cylender

or just run er till she blows
i think thats the mentallity of the origonal owner

 

[Cam]

Cant braze alu daniel, you can weld an alu nut to it though

 

[fowler]

u can mig ally but it requires teflon lining and differant gas oh and ally wire of cause

 

[oscaryu1]

helicoil.