[Blackdog]

1990 Toyota 4X4 PU, 3.0 V6 (Just got it for cheap, had a broken timing belt)

While replacing my timing belt I had to bring #1 up on the compression stroke. This is when I found that #1 plug hole was stripped. Only the first 3 or so threads are damaged. Any advice on repairing this without removing the head?
I seen somewhere in a magazine that there is a tool that you insert into the hole than cut threads from the inside out, ever seen one of these?
I just spent $300 on a timing set, pulleys, water pump, etc and now this!

[matt167]

you can get spark plug heli coils. just drill it slow and put a lot of grease on the drill bit, to catch the shavings, keep it clean too. then do the same with the heli coil tap, lots of grease and keep it clean.

[sprecher48]

there are also several co's make an insert that threads into the hole. The kit has 2 taps 1 coarse,1 finish, of course,do the grease trick and use air to blow out the hole, put it in with locktite (usually supplied with the kit) and replace the plug. They come in several lengths.good luck! Tom

[406 bug]

Are you sure there is no damage to the valve train?? sometimes when a belt goes the valves collide with the pistons. With respect to the plug- since you pulled it out I assume you can get it back in. That being the case, take some JB weld or other epoxy, coat the threads and tread in back in. Plugs will last for 80,000 plus miles so what the hay!!!!

[Jmark]

Originally Posted by 406 bug

. That being the case, take some JB weld or other epoxy, coat the threads and tread in back in. Plugs will last for 80,000 plus miles so what the hay!!!!

ROFLMAO!!! Yea Baby,,,I like how you think, must be a redneck like me! (is everyone in AZ like you and me? LOL)

Mark

[406 bug]

[QUOTE=Jmark]ROFLMAO!!! Yea Baby,,,I like how you think, must be a redneck like me! (is everyone in AZ like you and me? LOL)

Mark[/QUOTE


you got it . I order bailing wire in the 100yard reels!!!!!!!!!!

[sam-missle]

Originally Posted by 406 bug

Are you sure there is no damage to the valve train?? sometimes when a belt goes the valves collide with the pistons. With respect to the plug- since you pulled it out I assume you can get it back in. That being the case, take some JB weld or other epoxy, coat the threads and tread in back in. Plugs will last for 80,000 plus miles so what the hay!!!!

3.0 toyota is not an interference engine, valves should be fine.

sam-missle

[scrot]

Just how stripped is the hole?
It was holding the spark plug, right?
Try chasing the hole with a spark plug tap, and see if it clears up the threads any.

[powerrodsmike]

K-D makes a kit for putting the insert in, IIRC it's about 15.00-20.00..You drill and tap the hole oversize then stake the insert in place..I've done a couple of them on our Acura...Like others said, use a blowgun with a tube attached down in the cylinder and keep blowing the chips out of the sparkplug hole.


later, mikey