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JC-WI 
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Joined: 11 Sep 2009
Location: wisconsin
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 Topic: Heli coil sparkplug hole... 18 x 1.5
Posted: 01 Jan 2020 at 4:26am |
I blew a spark plug out of an aluminum head yesterday... Wis.V4 to be exact... in a 610 BC skid steer. I called all over today looking for the kit to put a new Helicoil in and ZIP! Can't get an 18mm, but can get 14mm kits everywhere at a cheap enough price. Could have had an 18mm kit about 15 years ago for about 29 bucks. Now Napa wants 190 something for it... and o'ripoff wants 199 dollars and some on ebay want up to 298... Feel thats a little much for a tap, considering the helicoil is only about 10 bucks for 6. Looks like I am going to have to take the head off and find a machine shop maybe... Any others got suggestions or maybe a helicoil tap they would loan? Thanks
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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DiyDave
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Joined: 11 Sep 2009
Location: Gambrills, MD
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Posted: 01 Jan 2020 at 4:48am |
Keep googlin around, I bet there is somebody sellin cheaper chinese stuff... 
Saw a v4D reman head fer $225... |
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Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need!
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pirlbeck
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Joined: 01 Dec 2009
Location: West Central IA
Points: 226
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Posted: 01 Jan 2020 at 9:28am |
Here is the best price I could find searching the net.
Heli-Coil #5523-18 $118.09
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chaskaduo
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Joined: 26 Nov 2016
Location: Twin Cities
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Posted: 01 Jan 2020 at 10:00am |
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5061
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Posted: 01 Jan 2020 at 10:58am |
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pretty sure I have a set that came with a big Craftsman 900 pc tool kit I bought when I first started wrenching. I think I've used one of the inserts lol! I'll look later when I get to the shop. I'd sure think you'd be able to find some on ebay.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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JC-WI
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Joined: 11 Sep 2009
Location: wisconsin
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Posted: 01 Jan 2020 at 11:49am |
Was looking too ... came across these... Another question is, are spark plug threads the same as regular metric bolt threads? I was also told to look for spring stainless helicoils for sparkplug applications.
Kinda wonder if all 'helicoils' are of the same dimension. probably not.
The Heli-coil set listed looks like it is a two step tap , but I would think that it should have a drill applied to the hole to start the larger tap in...?
The 'v-coil' set needs the drill bit too and is about $96 bucks from Britain... The above M18 set is 48 bucks
and the 'Thread Kits (1218-500 Thread Repair Kit' I about $63...I'm going to keep looking... for awhile. Thanks Chask, Pirlbeck and DD..
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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Roger Mn
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Joined: 12 Sep 2009
Location: Preston Mn
Points: 105
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Posted: 01 Jan 2020 at 1:30pm |
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where in Wisconsin are you I have a kit pm me your phone number Roger
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chaskaduo
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Joined: 26 Nov 2016
Location: Twin Cities
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Posted: 01 Jan 2020 at 2:05pm |
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A life line.
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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injpumpEd
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Location: Walnut IL
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Posted: 02 Jan 2020 at 8:09am |
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just looked at my old kit, and it only has 14mm. Just has a few different lengths. 18mm X 1.5 thread should be that, no matter what the application. If it's different, the pitch will be different, such as 1.25, or 1,75, or 2.0. Just keep in mind, most spark plug inserts are a solid insert, not heli-coil style. Good luck with the 18mm.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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Tbone95
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Posted: 02 Jan 2020 at 8:37am |
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I don't think I have one that big, but I will take a look tonight!
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steve(ill)
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Joined: 11 Sep 2009
Location: illinois
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Posted: 02 Jan 2020 at 8:55am |
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I have not done it, but the "OLD" F150 with 5.4 motors around 1999 had a problem with pulling the thread.. Not enough threads......... Reading on the FORD sites they specify NOT to use the Helicoil.... use a "thread insert"........ apparently they are not all the same... Isnt a "helicoil" just a spring wound into the hole ? I know its a generic name for many brands, but I think you want a SOLID THREADED BAR, not a spring.
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Like them all, but love the "B"s.
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CTuckerNWIL
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Joined: 11 Sep 2009
Location: NW Illinois
Points: 22824
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Posted: 02 Jan 2020 at 1:04pm |
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Helicoil is just a spring like thread. They are ok for something you don't need to take apart and put back together much, and wouldn't be my choice for a spark plug thread.
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jaybmiller
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Joined: 12 Sep 2009
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Posted: 02 Jan 2020 at 2:20pm |
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OK, I'm wondering if you could install a regular plug( 14mm) using a helicoil that'll fit the existing hole( if retapped clean) ??
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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)
Never burn your bridges, unless you can walk on water
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B26240
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Posted: 02 Jan 2020 at 4:17pm |
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My first plan would be to find a used head, the old wisconsin v4 is mostly obsolete and I would think there are lots of heads around.
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JC-WI
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Posted: 02 Jan 2020 at 5:16pm |
Calling off the hunt,
A very nice fellow, Norm, is loaning me a kit to use. Thanks Norm.
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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Lonn
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Joined: 16 Sep 2009
Location: Назарово,Russia
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Posted: 03 Jan 2020 at 7:27am |
Wasn't too many years ago that you could get new heads for a Wisconsin........ but years tend to fly by faster than I can count. 
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Ted J
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Joined: 05 Jul 2010
Location: La Crosse, WI
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Posted: 03 Jan 2020 at 10:07pm |
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Well let us know how it works out JC.
If you want, you can post pics, but tell ole Shamers that he can't look at em until he posts some pics of his new kitchen!!
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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chaskaduo
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Location: Twin Cities
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Posted: 04 Jan 2020 at 6:51am |
The Greatest Guys Are On This Forum  
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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TramwayGuy
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Posted: 04 Jan 2020 at 9:11am |
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There were lots of different V4 Wisconsins. VE4, VF4, VH4, VG4. Heads are not interchangeable from VG4D to any of others. Not sure about the first three. VP4 preceded the VG4, but would be too old to have been in a bobcat.
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JC-WI
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Posted: 04 Jan 2020 at 8:09pm |
Continuation ... I picked up the Heli-coils today that I ordered 12-31-19. The package says "DO NOT use Heli-Coil wire inserts to repair tapered seat
spark plug ports." ??? Wonder what makes the difference... Might push the heli out into the cylinder wall and let the plug get loose? Maybe no gasket under the plug to allow for metal expansion?
or the seat of the plug start squishing down the blocks threads that hold the Heil coils and distort the threads... to me that would be the most logical.
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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DiyDave
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Location: Gambrills, MD
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Posted: 04 Jan 2020 at 8:25pm |
Or heli-coil inserts are not tapered...
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JC-WI
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Posted: 07 Jan 2020 at 6:11pm |
610 Bob Cat is alive again!
Heli-coil job would have been easy-peasy If I had just followed the instructions as tho it were a new tool... It took about 5 minutes to use the tap with grease on it... and there was enough room to do it between the head and valve in block. Had a smudge of grease on the valve from the end of the tap so it was close. Then used the tool for putting in the heli-coil. Tool squeezes the heli-coil down and starts it in the new thread of the head and sets the height of the heli-coil in the head too...Well, the tool was set to deep and had two turns in the head farther than was suppose to be.   Got ready to pull the head off and then decided to reach in and see if I could pull the heli wire out through the spark plug hole... and was successful at doing that. Then put another heli-coil in and broke the tang off, Threaded the spark plug in and tightened it down and I thing it is going to work out okay. Thanks Norm Mienert for helping me out.
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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chaskaduo
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Location: Twin Cities
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Posted: 08 Jan 2020 at 9:29am |
Another Win.
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1938 B, 79 Dynamark 11/36 6spd, 95 Weed-Eater 16hp, 2010 Bolens 14hp
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