Need advice on spark plug repair kit to buy?

[twinstaged]

http://www.cotronics.com/vo/cotr/rm_threadlockers.htm

Yep looks like the stuff. Use it on turbo stuff sometimes. It has a shelve life so don't buy more then you can use in a 3-6 months

 

[Mattyo]

of note, that 907 stuff is high temp, but it says removable with hand tools. ... so it may not be as ... permanent as jb weld. I dunno... talkin out my butt here...

 

[twinstaged]

of note, that 907 stuff is high temp, but it says removable with hand tools. ... so it may not be as ... permanent as jb weld. I dunno... talkin out my butt here...

I wouldn't worry about it either way. That sleeve gets swaged in there and it's not gonna back out if it's done right.

 

[twinstaged]

how rush is this job? I'm in the middle of swapping out equipment and reorganizing , but I could do it.

 

[Mattyo]

Steve, I can send you the cylinder so you can see what I did.... if ya want. the insert hasn't been swaged in there, just placed it in there

 

[Lone Wolf]

how rush is this job? I'm in the middle of swapping out equipment and reorganizing , but I could do it.

No rush.

 

[Lone Wolf]

Steve, I can send you the cylinder so you can see what I did.... if ya want. the insert hasn't been swaged in there, just placed it in there

You are sure it is the same exact set ? If so I could dremel a bit out but I cant imagine it would give it enough clearance the way it looks from here.

 

[twinstaged]

Well if you need someone to get it in there straight I can. I have a job shop.

 

[Mattyo]

 

[Mattyo]

looks like the same kit to me.... genuine save a thread

 

[Basher]

of note, that 907 stuff is high temp, but it says removable with hand tools. ... so it may not be as ... permanent as jb weld. I dunno... talkin out my butt here...

I have used JB on all the insert repairs I did over the last 25 years or so,all are still in service. Always used the Keen Sert ( sleeve) style inserts but I don`t have the clearance issues with the threaders, have an assortment of threaders/re-threaders plus a few custom made mandrels that insert into the existing plug holes and DRO off the plug sealing surface on the cylinder.

 

[Mattyo]

so its ok to indicate off the plug sealing surface? thats what I figured.

still, how to hold a 200t cylinder down to a bridgeport table... ...thats the trick

 

[Lone Wolf]

View attachment 83085

I'm going to take a pic in a while of the one I have .

 

[Lone Wolf]

Well if you need someone to get it in there straight I can. I have a job shop.

What do you need ? Are you able to bore it and tap it with a m17x 1.25 tap there ? Do you have that tap?

 

[twinstaged]

What do you need ? Are you able to bore it and tap it with a m17x 1.25 tap there ? Do you have that tap?

I would just need the save a thread tap meant for the sleeve and the sleeve. I would say I could grab one of the China special 17x1.25 taps from eBay and it would probably be fine, but there is a standard for all threads on their fitment class and I'm not sure how sloppy the China tap is.

Just like basher said I would turn a mandrel to indicate off from or if things don't look to sloppy and I have the space I would make a tap guide that sits on the head to guide that tap straight by hand.

 

[Lone Wolf]

I would just need the save a thread tap meant for the sleeve and the sleeve. I would say I could grab one of the China special 17x1.25 taps from eBay and it would probably be fine, but there is a standard for all threads on their fitment class and I'm not sure how sloppy the China tap is.

Just like basher said I would turn a mandrel to indicate off from or if things don't look to sloppy and I have the space I would make a tap guide that sits on the head to guide that tap straight by hand.

Problem is the tool is too long and hits inside. That's why I think we need a tap not the tool.I'm posting pics soon for Matt to compare the length.

 

[twinstaged]

Problem is the tool is too long and hits inside. That's why I think we need a tap not the tool.I'm posting pics soon for Matt to compare the length.

Yeah going to have to sacrifice the end of it. I'll price out a tap.

 

[GoBigBlue1984]

I've got a homemade plug that I use, to line up in the mill i screw my plug in the cylinder. I then indicate two sides up and down. It's about 4" long once screwed into the cylinder. It will get you dead nuts close.

Fixing to threadsert a 660 cylinder.

 

[Lone Wolf]

Matt

 

[Lone Wolf]

Yeah going to have to sacrifice the end of it. I'll price out a tap.

Aint many on the internet i think 27.00